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classification of Insulation epoxy board
Epoxy board is an insulating material, the insulation performance and temperature are closely related, the higher the temperature, the worse the performance of the insulation, in order to ensure dielectric strength, each insulating material has an appropriate maximum allowable operating temperature, in below this temperature, can be safely used long-term, beyond this temperature will rapidly aging. According to the degree of heat resistance, the insulating material is divided into Y, A, E, B, F, H, C and other levels. A class of insulating materials such as the maximum allowable operating temperature of 105 ℃, the general use of distribution transformers, motor insulation are mostly Class A, for example, epoxy insulation board and so on.
Application Features epoxy board which
1, the mechanical properties. The cured epoxy resin system with excellent mechanical properties.
2, curing and convenient. Use a variety of different curing agents, epoxy resin systems can be cured at a temperature almost 0 ~ 180 ℃ range.
3 forms. Various resins, curing agents, modifiers system can be adapted to the requirements of almost all kinds of applications made to the form, which can range from very low viscosity to high melting solids.
4, strong adhesion. Inherent in the presence of epoxy resin molecular chains and a polar hydroxyl ether bond to a variety of substances with high adhesion. Epoxy curing low shrinkage, internal stress generated, which also helps to improve the adhesion strength.
5, low shrinkage. The reaction of the epoxy resin and the curing agent is used by direct addition reaction epoxy resin molecule or ring-opening polymerization reaction carried out, without water or other volatile byproducts released. They are unsaturated polyester resins, phenolic resins compared to exhibit very low shrinkage (less than 2%) during the curing process.