What are the types of insulation materials that are classified into electrical insulation?

Different polyester electrical tape correspond to different uses of the relative, respectively, play a different role, and like the role of electrical insulation material is in the electrical equipment to separate the different parts of the conductor, so that the current can flow in a predetermined direction.
If the insulation material in accordance with the physical state of different, can be divided into gas, liquid, solid three categories, including body insulation refers to the air, nitrogen, carbon dioxide, sulfur hexafluoride, etc .; and liquid phenolic laminated sheet is transformer oil, , Cable oil and other mineral oil and silicone oil, three atmosphere of benzene and other synthetic oil. In contrast, the classification of solid electrical insulation materials is more complex.
At present, there are many commonly used motor insulation materials, one is impregnated paint, it can be divided into two kinds of solvent and solvent-free, the former permeability is relatively good, long storage period, easy to use, but the impregnation and drying time is long, Curing slow; and the latter fast curing, viscosity changes rapidly with the temperature, and mobility, permeability, insulation integrity and so very good.
Similar to the motor compressed laminated wood is covered with paint, it can not only be used for dipping paint after the coil and insulation parts of the surface coating, can also be used for motor repair, to strengthen the local insulation capacity. The current application of epoxy lacquer is more extensive because of its moisture resistance, mildew resistance, dryness and strong paint film adhesion better.
In addition, dipped fiber products are also very common motor insulation materials, including the insulation paint cloth, insulated paint and tie belt three; with its corresponding non-impregnated fiber products, this motor insulation material with high heat resistance, water absorption is small, soft , High tensile strength, electrical performance and so on.
In addition, electricians often use thin films and composite products, sticky tape, insulation laminates as a motor insulation material, the same can play a very good insulation effect.

The use and characteristics of conventional insulating varnishes

insulation materials classification many, there are insulation board, insulated wire, as well as insulating paint, are some widely used insulating materials. Since the use of different, then the use of insulating paint varieties are different, what are the more commonly used types?
Most of the insulating paint is composed of paint base, solvent or thinner and auxiliary materials and other components, and can be divided into impregnated paint, enameled wire paint, covering paint, silicon steel paint, anti-corona paint and other varieties. Which impregnated insulating paint can also be divided into solvent paint and solvent-free paint two categories, mainly used in dipping motor, electrical coil and so on.
 Enameled wire insulation paint, of course, is a special enameled wire core coated insulating material, this insulating paint has a good coating, making the coating evenly, and the film adhesion, smooth and soft surface toughness; In addition, but also have a certain Wear resistance and elasticity, electrical performance, heat resistance, solvent resistance, no corrosion on the conductor and other characteristics.
Covered with heat resistant tape paint is used to coat the impregnated coil and insulation components of the material, in its surface to form a uniform thickness of the insulation protection layer to prevent the equipment insulation by mechanical damage and the atmosphere, the erosion of chemicals, improve surface insulation strength.
In contrast, silicon steel insulation paint is mainly used for coating silicon steel sheet, in order to reduce the core of the eddy current loss, and enhance corrosion resistance. However, it should be noted that the silicon steel insulation coating after the need for high temperature drying, in order to play a good feature.
The remaining anti-corona insulating paint is a kind of insulating varnish and non-metallic conductor powder mixed with insulating material, mainly for high-voltage coil, in order to play a good use requirements, requiring such insulation paint surface resistivity and stability, Strong adhesion, good wear resistance, fast drying, storage and so on.

The types and characteristics of mica products as insulating materials

Various types of mica products have excellent high temperature insulation, so they are also insulating materials, and the kinds of products are also many, the production process and performance characteristics are so different, but also need to further distinguish. After mastering this knowledge, we have a deeper understanding of insulating materials.
One is a soft mica plate, it is a plate-like polyimide film tape, is bonded with adhesive sheet mica or adhesive with mica adhesive in single or double-sided reinforcement material, made by baking, the general Used in motor slot insulation and turn insulation. Under normal circumstances, the soft mica board area will not be less than 400 × 600mm ², and requires a neat edge, adhesive distribution even; do not allow impurities, stratification and other undesirable phenomena.
The other is mica plate, is a different hardness of the insulation material, but in any case, they have excellent high temperature insulation properties, but also in high temperature insulation materials, has a good price; at the same time there are excellent electrical insulation Performance and bending strength and processing performance.
There is also a mica pad, it is made of hard plate-like polyester electrical tape from the gasket, gasket, pad or other various special parts. When it is normal, this kind of insulating material has good mechanical strength and electrical performance, suitable for a variety of electrical appliances, welding machines, arrester, electric components such as gasket insulation.
There are also mica tubes and mica tapes, the former is a rigid tubular insulation material, mainly by the stripping mica or mica paper with the appropriate adhesive bonding in the single-sided reinforcement material on the roll; the latter is the ribbon of insulation material. In addition, the commutator mica board is a special insulation material, specifically for the working temperature of 130 ℃ DC motor commutator copper between the insulation design.

What are the differences and commonalities of insulating materials?

The same is paper products, but insulating paper and green paper paper is a big difference; and seemingly NMN Insulating material and NMN insulation materials are two different products, but in fact they have a lot in common. So sometimes can not only look or feel to judge, or to conduct in-depth analysis of the product in order to understand the relationship.
For example, insulating paper is actually a composite insulation material, is coated with polyester film F-class adhesive, one side of the adhesive polyester fiber made of non-woven; and green shell paper is only a common by the fluorine processing Into the paper products, so they show the characteristics are different.
Tested, the insulating paper has good mechanical strength, dielectric properties and high heat resistance, Y series motor stereotypes flexible composite materials, can be used as small and medium-sized motor slot insulation, inter-turn and interlayer insulation, Insulation and transformer insulation.

What kind of insulating material is formed by the way?

anti static plastic sheet covers the type is too much, which will not be good at conducting current material called insulator, the material resistivity is often very high. Of course, insulators can also be divided into many categories, such as solid insulators there are plastic, rubber, glass, ceramics, etc .; liquid insulator refers to the natural mineral oil, silicone oil, trichlorobenzene, etc .; there are like air, carbon dioxide, Sulfur hexafluoride and the like.
The insulator has an obvious characteristic, that is, when it is under certain external conditions, it will be broken down "and converted into conductors, and it is not absolutely broken before the insulator is not absolutely conductive objects, if A voltage is applied across the insulating material, and a weak current is also present.
As an insulating material, there are many molding methods, if the substrate material in accordance with the different needs of different ways to shape. For example, resin-based g10 fiberglass molding methods are hand-paste molding, injection molding, fiber winding molding, molding, pultrusion, RTM molding, hot-pressing tank molding, diaphragm molding, migration molding, reaction injection molding, Stamping and so on.
The metal-based fibre washers is only solid-phase molding method and liquid-phase molding method, the former is below the melting point of the substrate temperature, through the application of pressure to achieve molding, including diffusion welding, powder metallurgy, hot rolling, hot drawing, Pressure and explosive welding. The latter is the matrix is ​​melted and filled into the reinforcement material, the traditional casting, vacuum suction, vacuum back pressure casting, extrusion casting and casting, etc. are liquid phase molding.

What are the indicators that affect the insulator

1, the insulation resistance and resistivity resistance is the reciprocal of the conductance, the resistivity is the resistance per unit volume. The smaller the conductivity of the material, the greater the resistance, the reciprocal relationship between the two, for the insulation material, always want the resistivity as high as possible.
2, the relative dielectric constant and dielectric loss tangent insulation material uses two: the electrical network components of the mutual insulation and capacitor dielectric (energy storage). The former requires a relatively small relative dielectric constant, which requires a relatively large relative dielectric constant, and both require dielectric loss tangent, especially in high frequency and high pressure applications of insulating materials, in order to make dielectric loss is small, require the use of Dielectric loss tangent small insulation material.
3, breakdown voltage and electrical strength in a strong electric field under the destruction of insulating materials, loss of insulation into a conductive state, known as the breakdown. The breakdown voltage is called the breakdown voltage (dielectric strength). EPGC201 is under the conditions of the breakdown of the voltage and withstand the voltage between the two electrodes of the business, that is, the unit thickness of the breakdown voltage. For insulating materials, the general breakdown voltage, the value of electrical strength as high as possible.
4, the tensile strength is in the tensile test, the specimen to withstand the maximum tensile stress. It is the most widely used and most representative test of the mechanical properties of insulating materials.
 5, resistance to burning refers to the insulation material in contact with the flame to resist combustion or leave the flame to prevent the ability to continue burning. With the increasing use of insulating materials, its resistance to flammability is more important, people through various means to improve and improve the flame resistance of insulating materials. The higher the flame resistance, the better the safety.
6, resistance to arc In the specified test conditions, the acetate cloth tapes to withstand the role of the arc along its ability. Test the use of high-voltage alternating current, by high pressure generated between the two electrodes of the arc, so that the surface of the insulating material to form the conductive layer of the time required to determine the arc resistance of insulating materials. The greater the time value, the better the arc resistance.
7, the degree of sealing on the oil, water quality isolation is better.

What is the characteristics and use of insulating paper?

Are generally ordinary polyimide glass fiber, rarely insulated paper insulation paper is the general term for electrical insulation paper. Used as cables, coils and other electrical equipment, insulation materials. Usually include a variety of capacitor paper, cable paper, telephone paper, impregnated insulating paper, roll heat resistant tape, powder mica paper and so on. In addition to have good insulation properties and mechanical strength, but also have their own characteristics. For example, the capacitor paper and bamboo film is made of refined sulphate slurry; the surface of the powder mica paper is made of metal flash, which is made by calcining the mica sheet.

What kind of insulating material is formed by the way?

laminated compressed wood covers the type is too much, which will not be good at conducting the material known as the insulator, the resistivity of this material is often very high. Of course, insulators can also be divided into many categories, such as solid insulators there are plastic, rubber, glass, ceramics, etc .; liquid insulator refers to the natural mineral oil, silicone oil, trichlorobenzene, etc .; there are like air, carbon dioxide, Sulfur hexafluoride and the like.
The insulator has an obvious characteristic, that is, when it is under some external conditions, it will be broken down "and converted into conductors, and it is not absolutely broken before the insulator is not absolutely conductive objects, if A voltage is applied across the insulating material, and a weak current is also present.
As an soldering frames, there are many molding methods, if the different needs in accordance with the matrix material in different ways. For example, resin-based insulating material molding methods are hand-paste molding, jet molding, fiber winding molding, molding, pultrusion, RTM molding, hot-pressing tank molding, diaphragm molding, migration molding, reaction injection molding, Stamping and so on.
The metal-based EPGC203 is only solid-phase molding method and liquid-phase molding method, the former is below the melting point of the substrate temperature, through the application of pressure to achieve molding, including diffusion welding, powder metallurgy, hot rolling, hot drawing, Pressure and explosive welding. The latter is the matrix melting and filling into the reinforcement material, the traditional casting, vacuum suction, vacuum back pressure casting, extrusion casting and casting, etc. are liquid phase molding.
There is also a ceramic-based insulation material, its molding methods are also a variety of options, including solid-phase sintering, chemical vapor phase infiltration molding, chemical vapor deposition molding and so on.

What materials are solid insulation materials?

We all know that insulating materials can be simply divided into solid, liquid and gas three categories, which are usually used in more or solid insulation material, as long as it can be isolated from the potential of the conductor as a solid can be Classified as this category.
Compared to gas phenolic paper sheet and liquid insulating materials, the density of the solid insulating material is relatively high, so it has a high breakdown strength and helps to reduce the insulation thickness. The solid insulation material itself can also be divided into two kinds of inorganic and organic.
Wherein the inorganic solid electrical insulating board comprises mica, powder mica and mica products; glass, glass fiber and its products, and electric porcelain, alumina film, respectively, for different insulation structures. But they have a common characteristic, such as high temperature, not easy to aging, with considerable mechanical strength.
Inorganic solid insulation material is not perfect, its main drawback is poor processing performance, so this material is not easy to adapt to the electrical equipment on the molding requirements of insulating materials. It is precisely because of this, but also limits the scope of application of inorganic solid insulation materials to further expand.
Let's talk about organic solid insulation materials, just when there are some natural materials, such as paper, cotton, silk, rubber, can be cured of vegetable oil. But with the advancement of technology, synthetic polymer materials fundamentally changed the form of organic solid insulation materials.
And the elastomer material is also gradually to the insulation side of the line, such as heat-resistant silicone rubber, oil-resistant nitrile rubber, and the subsequent fluorine rubber, ethylene propylene rubber, etc., are very typical organic solid insulation materials

In the electricity process, people pay attention to the power line material cross-sectional area of ​​the size of the safe use of electricity have an impact, but often the use of insulation transformer pressboard is not enough attention. Now the power line alignment is more and more complex, walking under the wood floor, the wall, the partition and the wet underground or water are, if the insulation tape used improperly, will produce leakage, endangering personal safety or cause a fire. So how do you use insulating tape correctly?
Power cord connector is divided into "ten" word connection, "one" word connection, "Ding" word connection and so on. Joints should be wrapped around, smooth without thorns. Before the thread is broken, it should be wiped with a steel wire, and then wound around the mouth, and then swing around, the thread will be quickly disguised at the joint disconnected. If the joints in the dry place, you should first use insulated black cloth wrapped two layers, and then wrapped plastic tape (also known as pvc adhesive tape) two layers, and then J-10 insulation self-adhesive tape stretched about 200% Finally wrapped two layers of plastic tape.
Because the direct use of plastic tape a lot of defects: plastic tape a long time easy to glue dislocation, plastic open, electrical load heavy, the joints heat, plastic tape easy to melt shrink; electrical connector in the junction box with each other pressure, Easy to stamp empty plastic tape, etc., these risks directly endanger personal safety, causing the line is moderate, causing a fire. The use of insulating black tape will not appear above, it has a certain strength, flexibility, can be tightly wrapped around the joints, by time and temperature and dry fixed type, will not fall off, and flame retardant. Moreover, wrapped with insulated vinyl tape and then wrapped with moisture, rust.
Of course, the anti static plastic sheet is also defective, although it is waterproof but easy to break, so the last need to wrap two layers of plastic tape for the protective layer, connector and connector insulation self-adhesive tape non-stick, better performance.

Different electrical equipment requirements for the performance of insulating materials are focused. High-voltage electrical equipment such as high-voltage motors, high-voltage cables and other insulation materials require high breakdown strength and low dielectric loss. Low-voltage electrical appliances, such as mechanical strength, elongation at break, heat-resistant grade as the main requirements.
    The macroscopic properties of insulation cable paper such as electrical properties, thermal properties, mechanical properties, chemical resistance, weather resistance, corrosion resistance and other properties are closely related to its chemical composition and molecular structure. Inorganic solid insulation material is mainly composed of silicon, boron and a variety of metal oxides, mainly to the ionic structure, the main features of high heat resistance, the working temperature is generally greater than 180 ℃, good stability, resistance to atmospheric aging, Chemical properties and long-term under the action of the electric field aging performance; but high brittleness, low impact strength, high pressure and low tensile strength; poor process. Organic materials are generally polymers with an average molecular weight between 104 and 106, and their heat resistance is usually lower than that of inorganic materials. Contains aromatic rings, heterocycles and silicon, titanium, fluorine and other elements of the laminated mica sheet heat resistance is higher than the general line of chain polymer materials.
    An important factor affecting the dielectric properties of insulating materials is the strength of the polar and the content of polar components. The dielectric constant and dielectric loss of the polar materials are higher than those of the non-polar materials, and the impurity ions are easily adsorbed to increase the conductivity and reduce the dielectric properties. Therefore, in the insulation material manufacturing process should pay attention to clean, to prevent pollution. Capacitor dielectrics require high dielectric constants to increase their specificity.

Application of insulating materials

The role of g10 fiberglass tube is in the electrical equipment to the potential of different charged part of the isolated. Therefore, the insulation material should first have a high insulation resistance and pressure strength, and to avoid leakage, breakdown and other accidents. Second, the heat resistance is better, to avoid long-term overheating and aging deterioration; In addition, there should be good thermal conductivity, resistance to lightning and high mechanical strength and ease of processing and so on. According to the above requirements, commonly used pe mica tape performance indicators are dielectric strength, tensile strength, specific gravity, expansion coefficient.
Electrician commonly used insulating materials according to their different chemical properties, can be divided into inorganic insulation materials, organic insulation materials and mixed insulation materials. Commonly used inorganic insulation materials are: mica, asbestos, marble, porcelain, glass, sulfur, etc., mainly used for electrical, electrical winding insulation, switch the bottom plate and insulators. Organic insulating materials are: shellac, resin, rubber, cotton yarn, paper, linen, rayon, etc., mostly used to manufacture insulating paint, winding wire insulation and so on. Mixed bakelite electrical insulation board for the above two kinds of materials from the processing of various molding insulation materials, used as electrical appliances of the base, shell and so on.

G11 fire resistant cables tape is actually insulation board insulation material in a type only, G11 is a class of insulation board division. Insulation board in fact there are FR4 insulation board, G11 insulation board, and so on all types and grades of insulation materials. G11 unsaturated polyester glass mat sheet is mainly used for electronics, electrical industry, has a good insulation performance, in a variety of harsh environments is still able to maintain a good working condition.
garolite g7 has the advantages: its insulation performance is good, there is a certain high temperature resistance, high mechanical properties, with moisture resistance, as well as dielectric properties and so on. Its high temperature resistance can reach 288 degrees of high temperature, but also a normal and stable work.
Specific scope of application: electronic, electrical equipment in the insulation baffle, transformers need to use the insulation board, electronic switch insulation objects, fiberglass meson, precision test panels, as well as precision planetary gears, etc. need insulation and The use of its own characteristics of the various industries and objects.

GPO-3 is a very good performance of the bakelite electrical insulation board, because it was so widely used, so that the counterfeiters will be more on-site market, there are too many fish mixed with GPO-3 insulation materials, although all Close to the GPO-3 label, but the performance is indeed a world of difference. Good anti static plastic sheet can be safe and efficient for us to use, you can fake and shoddy products but there are many security risks. Below the insulation material manufacturers teach you to identify the true and false GPO-3.
Method 1, genuine GPO-3 are required through the US safety laboratory certification (UL certification), with independent and unique UL identification code. So when you buy this kind of mica insulation tape GPO-3 must see if there is no UL identification code, or let the business to provide UL identification code.
Method 2, genuine GPO-3 its resistance to leakage index can reach 600V, you can test it, or let the business to provide indicators.
Method 3, authentic GPO-3 insulation material density is between 1.81-1.83, must be in accordance with national standards, the middle must be no filler, so be sure to see.

What is the raw material for SMC?

SMC is the abbreviation of Sheet molding compound, EPGC202 into Chinese is a sheet molding compound. The main raw materials from the SMC special yarn, unsaturated resin, low shrinkage additives, fillers and various additives. Is a kind of resin-based composite material, it first appeared in Europe in the early sixties of the twentieth century, in 1965 or so, the United States, Japan have developed this process. China in the late 80s, the introduction of foreign advanced SMC material production lines and production processes. SMC material has excellent EPGC201 electrical performance, corrosion resistance, light weight and easy to design, flexible, etc., its mechanical properties can be comparable with some metal materials, which are widely used in transportation vehicles, construction, electronics / electrical and other industries.

Insulating material: Insulating laminate

transformer pressboard are also known as laminates, and there are many types of insulating laminates, including phenolic cotton laminates, epoxy glass cloth laminates, insulating paperboard, silicone glass cloth laminates, melamine glass cloth laminates, diphenyl ether Glass cloth laminates, bismaleimide glass cloth laminates, polyimide glass cloth laminates, graphite glass cloth laminates, high strength epoxy glass cloth laminates, etc., referred to as insulation board.
With the development of the electrical industry, high insulation. High strength, high temperature and adapt to a variety of use of laminated plastic products have emerged. Printed copper clad laminates for printed circuits are also rapidly evolving due to the needs of the electronics industry. China's electrical and epoxy fiberglass tube are gradually developed after the liberation. China's thermosetting laminate has formed a relatively complete series.

Transformer insulation molded parts

Transformer Cabinet epoxy glass laminate sheet Molding Hot Press Heat Treatment Oil Circulation Heater, Molding Hot Press Heat Treatment Oil Circulation Heating, Hot Plate Molding Special Mold Temperature Machine, Hot Press Oil Heater, Hot Press Heat Treatment Oil Heater, Hot Press Heaters, hot press molding machine electric heating oil furnace, SMC glass steel mold heat conducting oil heater, glass steel hydraulic oil heater, hydraulic machine mold heat oil heater, GMT hot pressing die oil heater, molding special mold temperature machine. BMC molding mold temperature control machine, SMC molding mold dedicated mold temperature machine, wind power blade forming temperature control machine, wind turbine blade molding machine, wind turbine blade forming mold temperature machine, glass mold forming mold temperature machine, phenolic rod molding mold control machine. Supply> Supply temperature control machine, temperature control machine, temperature control machine, temperature control machine, temperature control machine, temperature control machine, temperature control machine, temperature control machine, temperature control machine, Temperature control machine, mixer temperature control machine.

Flame retardant cable commonly used insulating materials and the main performance

The performance of the flame retardant cable is determined by the oxygen index of the mica insulation sheets used, and the higher the oxygen index, the better the flame retardant performance of the flame retardant cable. But at the same time will lose part of other performance, increase the difficulty of operation and material costs.
Flame-retardant cable through the standard clock C class experimental requirements on the requirements of the oxygen index of vulcanized fiber sheet to 30, and if you want to achieve Class B and Class A sheathing materials and fillers are used flame retardant materials.

Application of insulating materials

The role of electrical insulating board is in the electrical equipment to the potential of different charged part of the isolated. Therefore, the insulation material should first have a high insulation resistance and pressure strength, and to avoid leakage, breakdown and other accidents. Second, the heat resistance is better, to avoid long-term overheating and aging deterioration; In addition, there should be good thermal conductivity, resistance to lightning and high mechanical strength and ease of processing and so on. According to the above requirements, commonly used laminated compressed wood performance indicators are dielectric strength, tensile strength, specific gravity, expansion coefficient.
Electrician commonly used insulating materials according to their different chemical properties, can be divided into inorganic insulation materials, organic insulation materials and mixed insulation materials. Commonly used inorganic insulation materials are:EPGC203 mica, asbestos, marble, porcelain, glass, sulfur, etc., mainly used for electrical, electrical winding insulation, switch the bottom plate and insulators. Organic soldering frames are: shellac, resin, rubber, cotton yarn, paper, linen, rayon, etc., mostly used to manufacture insulating paint, winding wire insulation and so on. Mixed insulation materials for the above two kinds of materials from the processing of various molding insulation materials, used as electrical appliances of the base, shell and so on.

GPO-3 is a good insulation transformer pressboard, is widely used in the machinery and electrical industry, then it is what good product performance, to win everyone's widely used? The following GPO-3 manufacturer for you!
First, with flame retardant: Because GPO-3 anti static plastic sheet is not halogen-containing materials, so when the phenomenon of fire, it has good flame retardant properties, and will not produce toxic gases.
Second, the product mechanical properties: Because GPO-3 production of the main material is high-strength glass fiber, it is not easy to break the phenomenon, and easy to bend to a diameter of 19mm.
Third, the resistance to high temperature: Because of the special properties of the production of materials, GPO-3 it can 120-210 ℃ electrons and 130-210 ℃ mechanical range with UL temperature rating. With superior stability.
Fourth, good insulation performance: it is high-quality phenolic paper sheet, is widely used in the electrical industry
Fifth, the production of simple and easy to shape: GPO-3 insulation material processing is simple and convenient, can stamping, drilling, machining, cutting and scrub.

bakelite electrical insulation board is a high-performance insulating material, it is also known as epoxy glass fiberboard, epoxy phenolic laminated glass cloth and so on. Epoxy board is mainly composed of: glass fiber cloth with epoxy resin bonded by heating and pressing production, so excellent performance, many advantages. And in what kind of temperature environment can play their own characteristics.
For example, in the medium temperature, can play a good mechanical properties; in high temperature environment, can better play its electrical. Therefore, due to these characteristics, epoxy board is very suitable for electrical and electronic fields of high insulation structure parts. All in a word, that is, epoxy board with high mechanical and dielectric properties, with good heat resistance and moisture resistance. Epoxy board insulation cable paper in the high temperature level in the F-class, which can withstand the high temperature of 155 degrees, in such a high temperature is still to maintain a stable performance.
Its specification thickness is generally between 0.5 ~ 100mm. Commonly used product specifications are 1000mm * 2000mm. Epoxy plate laminated mica sheet at 180 degrees under high temperature will be deformed, so it is generally not used together with other metal heat, or may lead to thermal deformation of metal sheet.

The role of insulating material

Electrician commonly used fire resistant cables tape according to their different chemical properties, can be divided into inorganic insulation materials, organic insulation materials and mixed insulation materials. Commonly used inorganic insulation materials are: mica, asbestos, marble, porcelain, glass, sulfur, etc., mainly used for electrical, electrical winding insulation, switch the bottom plate and insulators. Organic insulating materials are: shellac, resin, rubber, cotton yarn, paper, linen, rayon, etc., mostly used to manufacture insulating paint, winding wire unsaturated polyester glass mat sheet and so on. Mixed insulation materials for the above two kinds of materials from the processing of various molding insulation materials, used as electrical appliances of the base, shell and so on.
The role of insulating material is in the electrical equipment to the potential of different charged part of the isolated. Therefore, the insulation material should first have a high insulation resistance and pressure strength, and to avoid leakage, breakdown and other accidents. Second, the heat garolite g7 is better, to avoid long-term overheating and aging deterioration; In addition, there should be good thermal conductivity, resistance to lightning and high mechanical strength and ease of processing and so on. According to the above requirements, commonly used insulating material performance indicators are dielectric strength, tensile strength, specific gravity, expansion coefficient.

Solid insulating materials can be divided into inorganic and organic two categories.

Inorganic solid epoxy glass laminate sheet are mainly powder mica and mica products, glass, glass fiber and its products, as well as porcelain, alumina film. They are resistant to high temperatures, are not aging, have considerable mechanical strength, some of which are materials such as low cost, occupying a certain position in the application. The disadvantage of inorganic solid electrical insulating board is poor processing performance, difficult to adapt to the electrical equipment on the molding requirements of insulating materials.
Mica and powder mica products with long-term anti-corona characteristics, high-voltage equipment is an important part of the insulation structure can also be used for high temperature occasions.
The glass process is simpler than the ceramic and can be used to make it. Glass fiber can be made of silk, cloth, belt, with much higher than the organic fiber heat resistance, in the insulation structure to the development of high temperature plays an important role.

 The role of garolite g7 is in the electrical equipment to the potential of different charged part of the isolated. Therefore, the insulation material should first have a high insulation resistance and compressive strength, and to avoid leakage, breakdown and other accidents. Second, the heat resistance is better, to avoid long-term overheating and aging deterioration; In addition, there should be good thermal conductivity, resistance to lightning and high mechanical strength and process processing and other characteristics. According to the above requirements, commonly used g10 fiberglass tube performance indicators are dielectric strength, tensile strength, specific gravity, expansion coefficient.

Main Factors Affecting the Performance of Insulating Materials

1, insulation resistance and resistivity
The resistance is the reciprocal of the conductance, and the resistivity is the resistance per unit volume. The smaller the conductivity of the material, the greater the resistance, the reciprocal relationship between the two, for the insulation material, always want the resistivity as high as possible.
2, the relative dielectric constant and dielectric loss tangent
polyimide film tape uses two: electrical network components of the mutual insulation and capacitor media (energy storage). The former requires a relatively small relative dielectric constant, which requires a relatively large relative dielectric constant, and both require dielectric loss tangent, especially in high frequency and high voltage applications of insulating materials, in order to make dielectric loss is small, are required to use Dielectric loss tangent small insulation material.
3, breakdown voltage and electrical strength
In a strong electric field under the destruction of insulating materials, loss of insulation into a conductive state, known as the breakdown. The breakdown voltage is called the breakdown voltage (dielectric strength). Electrical strength is the breakdown of the voltage between the voltage and the two electrodes that withstand the external voltage under the specified conditions, that is, the breakdown voltage per unit thickness. For insulating materials, the general breakdown voltage, electrical strength of the value of the higher the better.
4, tensile strength
Is the maximum tensile stress that the specimen is subjected to in the tensile test. It is the most widely used and tested test of the mechanical properties of insulating materials.
5, resistance to burning
Refers to the ability of the vulcanized fiber to prevent continued combustion when it is in contact with the flame. With the increasing use of insulating materials, its flammability requirements are more important, people through various means to improve and improve the flame resistance of insulating materials. The higher the flame resistance, the better the safety.
6, resistant to arc
Under the specified test conditions, the insulating material is resistant to the arc acting along its surface. Test the use of high voltage AC current, by high pressure between the two electrodes generated by the arc, so that the surface of the insulating material to form the conductive layer of the time required to determine the arc resistance of insulating materials. The greater the time value, the better the arc resistance.
7, the degree of sealing
On the oil, water quality isolation is better.

High temperature mica plate (insulation board) those advantages

The product was silver-white, temperature level: continuous use conditions, temperature 500 ℃, intermittent conditions of use temperature 850 ℃;
• HP-8 hardness high temperature hot metal mother board (fire resistant cables tape). The product was golden, temperature level: continuous use under the conditions of temperature 850 ℃, intermittent use under conditions of temperature 1050 ℃.
Excellent unsaturated polyester glass mat sheet, the highest temperature up to 1000 ℃, high temperature insulation materials, has a good price.
• Excellent electrical insulation performance, withstand voltage breakdown of up to 20KV / mm.
• Excellent bending strength and processing performance, high bending strength, and excellent toughness, with the punching can be processed to a variety of shapes without stratification. Excellent environmental performance, non-asbestos, less heat when heated and small odor, or even smoke-free

In the insulating material as the main direction is mainly in three forms exist, one is the gas form, the other is the form of liquid, the last one is the solid form, the three forms of the most common than the solid type Insulation Materials.
Our three categories of insulation cable paper in the end which includes the first product is the most common and most commonly used solid type of insulating material, which mainly includes the product is insulating paper, insulation board, plastic, rubber, ceramics, Glass and so on these products are solid; followed by liquid type, it is mainly a kind of insulating oil is a kind of mineral is synthetic, although only two kinds of production but also in industrial use also plays a small The role of the last to see is the gas type, the most common is that we have been using the air there are nitrogen and so on. Different types of compressed laminated wood play a different role in industrial use, and we can choose the one that is most beneficial to us.

The main role of insulating paper is to prevent the contact between the enameled wire and the stator during the production of the motor, to damage the enameled wire, and of course to include other functions, such as separating the different potentials of the electrical equipment.
Because the equipment and environment that are usually used in insulating paper are special, the materials that make these insulating papers are also very demanding. The first and more important thing is that the heat resistance is better because the heat generated during the operation of the electrical equipment is Very large, if the heat resistance is poor, then the device will be in the case of long-term overheating equipment aging; the second is the need for insulation resistance and high compressive strength, so the use of electrical equipment in the process will not The emergence of leakage, etc .; the last is our production of insulating paper materials must also have thermal conductivity, moisture, heat and high mechanical strength and other important features

flexible composite materials production process, the impact of these materials there are many aspects, generally there will always be several major aspects, then what is the impact of insulating material?
First, the first aspect is the resistance factor, in accordance with the normal principle is the resistivity, the general material conduction smaller, the higher the resistance, for the insulation material, the resistance must be higher and better; the second is the seal Nature, the material must be on the oil, water quality sealing isolation is better; the third aspect to have high resistance to burning, resistance to the higher the performance of the insulation material for the better; the fourth aspect is the tensile strength, The tensile strength must reach the maximum tensile stress; the fifth aspect of the time value is greater, the better the arc resistance; of course there are other factors that affect the insulation material.
NMN Insulating material is generally used in the motor products more widely some products, with the incoming mechanical and electrical products become increasingly prosperous, insulating paper, insulation board is increasingly important, a variety of insulating materials plant began to run. From the current development of this situation, the prospects of these insulating materials should be quite good, why say so? With the upgrading of the technical level, customers need to update the insulation material to support the platform he needs, manufacturers are trying to support the customer needs the platform, then this way, the insulation material market is constantly expanding, the technical level Getting higher and higher, then the future market will be more and more clear!

Classification and performance of insulating materials

Many types of insulating materials, can be divided into gas, liquid, solid three categories. Commonly used gas insulation materials are air, nitrogen, sulfur hexafluoride insulation PC film. Liquid insulation materials are mainly mineral insulating oil, synthetic insulating oil (silicone oil, dodecyl benzene, polyisobutylene, isopropyl biphenyl, diaryl ethane, etc.) two categories. Solid insulation materials can be divided into organic, inorganic two categories. Organic solid insulation materials include insulating varnishes, insulating glue, insulating paper, insulating fiber products, plastic, rubber, lacquered lacquers and insulating impregnated fiber products, electrical thin films, composite products and adhesive tape, electrical laminates and so on. Inorganic solid insulation materials are mainly mica, glass, ceramics and their products. In contrast, solid insulation material variety, but also the most important.
Different electrical equipment requirements for the performance of insulating materials are focused. High-voltage electrical equipment such as high-voltage motors, high-voltage cables and other insulation materials require high breakdown strength and low dielectric loss. Low-voltage electrical appliances with mechanical strength, elongation at break, heat-resistant grade as the main requirements.
The macroscopic properties of compressed laminated wood such as electrical properties, thermal properties, mechanical properties, chemical resistance, weather resistance, corrosion resistance and other properties are closely related to its chemical composition and molecular structure. Inorganic solid insulation material is mainly composed of silicon, boron and a variety of metal oxides, mainly to the ionic structure, the main features of high heat resistance, the working temperature is generally greater than 180 ℃, good stability, resistance to atmospheric aging, Chemical properties and long-term under the action of the electric field aging performance; but high brittleness, low impact strength, high pressure and low tensile strength; poor process. Organic materials are generally polymers with an average molecular weight between 104 and 106, and their heat resistance is usually lower than that of inorganic materials. Contains aromatic rings, heterocycles and silicon, titanium, fluorine and other elements of the material heat resistance is higher than the general line of chain polymer materials.
An important factor affecting the dielectric properties of insulating materials is the strength of the polar and the content of polar components. The dielectric constant and dielectric loss of the polar materials are higher than those of the non-polar materials, and the impurity ions are easily adsorbed to increase the conductivity and reduce the dielectric properties. Therefore, in the insulation material manufacturing process should pay attention to clean, to prevent pollution. Capacitor dielectrics require high dielectric constants to increase their specificity.

What are the characteristics of insulating paper?

1, most of the bakelite sheet suppliers due to the use of physical properties, temperature, humidity, chemical resistance and other different types of different, insulating paper is one of them;
2, insulation paper can be based on the thickness of the insulation using different models, the staff can be adjusted according to the actual needs of the length;
3, insulated paper tape in the original insulation paper under the premise of its cutting into a variety of width, can effectively control costs, save time to improve efficiency and reduce a lot of trouble;
4, insulation paper tape also because our company clean and tidy environment, can effectively guarantee his insulation medium, ash loss and other aspects of performance.

The role and use of insulating materials

polyimide glass fiber is able to prevent the current through the material, the DC current has a very large resistance, under the action of DC voltage, in addition to a very small surface leakage current, in fact, almost non-conductive, and for the AC current capacitance The current passes, but is also considered to be nonconductive. Antistatic products are made of insulating material.
The greater the resistivity of the insulating material, the better the insulation performance. Insulation materials are essential in electrical products, the proportion of electrical equipment is very large. In general, electrical and electrical equipment are made of conductive materials, magnetic materials, insulating materials and structural materials. In addition to insulating materials, the other is metal materials. Motor, electrical appliances in operation, inevitably subject to temperature, electricity, mechanical stress and vibration, harmful gases, chemicals, moisture, dust and radiation and other factors. These factors have a more pronounced effect on insulating materials than other materials. It can be said that the insulation material is more sensitive to these factors, easy to deteriorate deterioration, resulting in damage to electrical equipment. So the insulation material is to determine the motor, electrical operation of the key material reliability.
Insulation material is one of the key factors to determine the technical and economic indicators of motor and electrical appliances. One of the important technical and economic indicators of the motor is the mass power ratio, that is, the kg / kw value. Reduce the ratio, the motor has important significance. From the electrical, electrical products, the cost of the situation, the cost of insulating materials in about half of these are the insulating materials in the electrical, electrical industry, the status and role.

Phenolic Resin

This insulating material is also called bakelite, also known as bakelite powder, solid phenolic resin is colorless or tan transparent.
Phenolic resin insulation material is the earliest industrial synthetic resin, the market is red, yellow, black, green, brown, blue and other colors, there are particles, powder is added with coloring agent. Resistant weak acid and weak base, in case of strong acid decomposition, the case of strong alkali corrosion. Do not dissolve in water, soluble in acetone, alcohol and other organic solvents. Phenol and formaldehyde derived from condensation. It includes: novolac resins, thermosetting phenolic resins and oil-soluble phenolic resins.
bakelite electrical insulation board are mainly used for the production of compression molding powder, laminated plastic; manufacturing varnish or insulation, corrosion-resistant coatings; manufacturing daily necessities, decorations; manufacturing noise, insulation materials. It has an important feature is high temperature resistance, even at very high temperatures, but also to maintain its structural integrity and size stability. For this reason, phenolic resins are used in some high temperature areas, such as refractory materials, friction materials, adhesives and foundry industries.

g10 fiberglass tube is made of electrician non-alkali glass fiber cloth impregnated with epoxy resin, baked, forming mold after hot-pressing the cross-section was made of round bar of the glass rod with high mechanical properties. Dielectric properties and good machinability. Applicable to electrical equipment for insulation structural parts, and can be used in humid environment and transformer oil.
The appearance of the epoxy tube: the surface should be smooth and smooth, no bubbles, oil and impurities, allowing the use of non-hinder the use of uneven color, abrasions, slight high and low inequality, wall thickness of more than 3mm epoxy tube to allow end or cross- Use the crack.

Polyimide film coated F46 composite film has excellent resistance to high and low temperature, laminated mica sheet, adhesion, radiation resistance, resistance to media, can be as low as -269 ℃ up to +400 ℃ temperature range use. Composite film also has the characteristics of high temperature self-adhesive seal. They can be used as high temperature flexible printed circuit substrate, flat circuit, wire and cable, wire insulation layer and used for a variety of motor insulation. Has been widely used in aircraft, spacecraft, nuclear industry, nuclear submarines, electric locomotives, audio devices, instrumentation, petrochemical and other departments.

HP-5 hard muscovite board. The product was silver white, temperature level: continuous use conditions, temperature 500 ℃, intermittent conditions of use under the conditions of temperature 850 ℃;
· HP-8 hard gold mica board. The product was golden, temperature level: continuous use under the conditions of temperature 850 ℃, intermittent use under conditions of temperature 1050 ℃.
Excellent high temperature insulation properties, the maximum temperature up to 1000 ℃, high temperature insulation materials, has a good price.
· Excellent electrical unsaturated polyester glass mat sheet, the resistance of ordinary products, breakdown voltage up to 20KV / mm.

epoxy glass laminate sheet is also known as epoxy glass fiberboard, epoxy phenolic laminated glass cloth, epoxy resin is a molecule that contains two or more epoxy groups of organic polymer compounds, in addition to individual, their Relative molecular mass is not high. The compressed laminated wood of the epoxy resin is characterized by the presence of a reactive epoxy group in the molecular chain, and the epoxy group may be at the terminal, intermediate or cyclic structure of the molecular chain. As the molecular structure contains lively epoxy groups, so that they can be associated with a variety of types of curing agent cross-linking reaction to form insoluble, non-melting with three-way network structure of the polymer. The following are the same as the "

epoxy fiberglass tube is made of electrician non-alkali glass fiber cloth impregnated with epoxy resin, baked, forming mold after hot-pressing the cross-section was made of round bar of the glass rod with high mechanical properties. Dielectric properties and good machinability. Applicable to electrical equipment for mica insulation tape structural parts, and can be used in humid environment and transformer oil. The following are the same as the "

The demand for anti static plastic sheet is increasing with the development of the energy industry. Now, the demand for natural mica plate is reduced, and the exploitation of natural mica plate is reduced year by year. Currently on the market of high-quality mica still can not meet the needs of the market, the future still have to speed up the pace of development. According to the statistics, the current consumption structure of mica plate has changed, the demand for mica is declining, and the demand for broken mica board continues to grow. Some comprehensive utilization of products, such as mica paper, mica powder are relatively popular products. With the domestic demand for thin slices of mica in recent years, natural mica plate gradually replaced, mica board processing products increasingly popular. The future, China's energy industry is the focus of development, increasing demand for mica cable tape. Coupled with industrial, electrical equipment replacement, also need a large number of insulating plates and other products, the domestic mica paper has a broad market. In addition, the application of mica powder field of continuous development, demand will be with the further growth. Whether the overall grasp of the domestic market development status of mica board, which is not only related to the company's future capacity planning, and to a large extent determine the company's product strategy.

What is an epoxy bar?

Epoxy rods are electric alkali-free glass fiber cloth impregnated with epoxy resin, baked, forming molds after hot-pressing the cross-section was round bar. The glass rods have high mechanical properties.
Epoxy bars can be divided into two categories by classification:
1. bakelite electrical insulation board, which is commonly known as the pull rod, generally used for arrester or insulator mandrel.
2. Epoxy Alkali cloth laminated rods, commonly known as sticks or laminated rods, generally used as machining insulation parts. Transformers and other products, the mechanical performance is better than pull rod.
Application Features:
1, in various forms. Various resins, curing agents, modifier systems can be adapted to a wide range of applications to the requirements of the form, ranging from very low viscosity to high melting solids.
2, easy to cure. Choose a variety of curing agent, epoxy resin system can be almost 0 ~ 180 ℃ temperature range curing.
3, strong adhesion. The presence of polar hydroxyl and ether linkages inherent in the molecular chain of the epoxy resin gives it a high adhesion to various substances. Epoxy resin curing low shrinkage, the resulting internal stress is small, which also helps to improve the adhesion strength.
4, low shrinkage The reaction of the electrical insulating board and the curing agent used is carried out by a direct addition reaction or by ring-opening polymerization of an epoxy group in the resin molecule without the presence of water or other volatile by-products. They exhibit very low shrinkage (less than 2%) compared to unsaturated polyester resins and phenolic resins during curing.
5, mechanical properties. The cured epoxy resin system has excellent mechanical properties.

Definition of insulating material

According to the national standard GB2900.5 provides the definition of insulating material is: "used to make the device in the mica insulation tape of the material." That is, to prevent the current through the insulating material. Its resistivity is very high, usually in the range of 10 ~ 10Ω · m. Such as in the motor, the insulating material around the conductor will be isolated and isolated from the grounded stator core to ensure the safe operation of the motor
Resistivity of 109 ~ 1022 Ω • Cm material composition of the material in the electrical technology known as vpi mica tape, also known as dielectric. Simply means that the charged body and other parts of the material isolation. Insulation material on the DC current has a very large resistance, under the action of DC voltage, in addition to a very small surface leakage current, the fact is almost non-conductive, and for the AC current there is a capacitor current through, but also that is not Conductive. The greater the resistivity of the insulating material, the better the insulation performance.
Electrical technology Insulation material is usually referred to as the resistance coefficient greater than 10 9 square Ω.cm material. The role of insulating material is mainly in the electrical equipment to separate the potential of the live part of the isolation.
So the insulation material to have a good dielectric properties, that is, have a high insulation resistance and pressure strength, to be able to avoid leakage, creep and breakdown and other accidents; followed by insulation materials, heat resistance is better, mainly to To ensure that there will be no long-term heat due to performance changes; in addition to good thermal conductivity, moisture and a higher mechanical strength and process processing and so on.
Electrician commonly used insulating materials, according to the different chemical properties, can be divided into inorganic materials, organic. Insulation materials and mixed insulation materials of three types.

What are the electrical insulation materials?

Electrical paper banding tape: mainly used for motors, electrical appliances, such as generators, motors for the electric shaft wedge, stator windings, rotor winding insulation. According to the shape is divided into six categories: ① insulating paint, resin and adhesive category. For example, insulation impregnated paint, silicon steel lacquer, enameled wire paint, potting resin and a variety of adhesives and other commonly used epoxy resin, polyester, polyurethane, silicone resin, polyimide alkyd resin (see alkyd resin coating )Wait. ② impregnated fiber products. Such as resin impregnated with various types of cotton, silk, synthetic fiber and glass fiber or fabric insulation fabric, belt and other products. ③ laminated products category. Various organic or inorganic substrates are impregnated with resin after laminates, such as laminates. ④ plastic products category. From the resin to add a variety of organic or inorganic filler, such as TV shell, instrument, instrument shell, electrical switch connector shell and so on. ⑤ thin film, synthetic paper and its composite products category. For example, various polymer film dielectric materials, commonly used are polystyrene, polypropylene, polyester, polycarbonate, polytetrafluoroethylene, polyimide and other films; various synthetic fiber compressed laminated wood, such as aromatic poly Amide fiber paper, polyester fiber paper; all kinds of insulating adhesive tape, insulation tape, and so on. ⑥ rubber products category. Such as a variety of wire and cable insulation and sheath, heat shrink tubing, silicone rubber insulation terminals. We love the long-term insulation specializing in the production of the first five kinds of insulation products, welcome customers to visit us for a long time insulation. Should be with the benefits of long-term focus, all will be beneficial for a long time professional.

Soft Composite Insulation Material

Soft composite DMD insulation paper, full name polyester film polyester fiber non-woven soft composite foil, is a two-layer polyester non-woven fabric in the middle of a layer of insulated polyester film composite made of three insulation materials. DMD is divided into B-class and F-two, B-class temperature of 130 degrees, F-class temperature of 155 degrees. B-level in the Chinese market is white, F-class products are usually blue or pink, to distinguish between. DMD products in the appearance of the appearance of a smooth, no bubbles, creases are better for the motor slot insulation and liner insulation.
The soft composite insulating material is made of one or both sides of the film. The structure of the insulating paperboard, glass cloth, synthetic fiber paper, etc., or both sides is the film, the middle is the structure of the asbestos paper and the glass cloth. The role of the electrical insulating board and other fibrous materials Is to increase the mechanical strength and stiffness of the film, to maintain good flexibility and improve heat resistance. Fiber paper has excellent adsorption, and the groove wall and the coil has a good adhesion between, to avoid displacement when running. Excellent dielectric properties, can compensate for the lack of dielectric strength of fiber paper, the composite soft material, to meet the dielectric properties, mechanical properties and application process performance requirements for motor, electrical appliances, transformers and household appliances, electronic equipment The insulation of the slot insulation, wire insulation and liner insulation. The use of soft composite insulation material, can reduce the thickness of insulation, reduce the size of the motor, increasing the insulation reliability.