Insulation material and the definition of the role of the best professional insulation materials website for my reference
Electrical strength is the breakdown of the voltage between the voltage and the two electrodes subjected to the applied 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: in the tensile test, the sample to withstand the maximum tensile stress. It is the most widely used and tested test of the mechanical properties of insulating materials. 5, Flammability: refers to the insulation material in contact with the flame to resist combustion or leave the flame to prevent the ability to continue to burn. With the increasing use of insulating materials, its flammability requirements are more important, people through various means to improve and improve the insulation
The main indicators affect the performance of insulating materials 1, insulation resistance, resistivity: resistance is the reciprocal of 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:
Its resistivity is very high, usually in the range of 10 ^ 9 ~ 10 ^ 22Ω · m. Commonly used insulating materials according to their different chemical properties, can be divided into inorganic insulating materials, organic insulating materials and mixed insulation materials. Commonly used inorganic insulation materials are: mica, asbestos, marble, porcelain, glass, sulfur and so on,
According to the national standard GB2900.5 provides the definition of insulating material is: "used to make the device in the electrical insulation of the material." That is, to prevent the current through the material.
