What is epoxy resin?

" epoxy resin is the general term for a class of polymers containing ether and midal bonds in the main chain of macromolecules, while both ends contain epoxy groupsa wide variety of epoxy resins, can be divided into bply gofolne Type A epoxy resin, bisphenol S-type epoxy resin, bisphenol F-type epoxy resin, phenolic epoxy resin, unsaturated epoxy resin and so onOne of the largest production, the most widely used is bpa A epoxy resinIt has excellent viscosity, electrical insulation, heat resistance and chemical stability, small shrinkage, low water absorption, good mechanical strengthThe main use of epoxy resin is for coating, followed by electrical insulation materials, enhanced materials and adhesivesOther types of epoxy resin varieties are also many, and have unique properties, such as low viscosity, good heat resistance, can be used at temperatures above 200 degrees Celsius long-term use, high mechanical strength, large elongation, heat and irradiation resistance, these are developed for special purposesbisphenol A epoxy resin has three kinds of low molecular weight, medium molecular weight and high molecular weightLow molecular weight epoxy resinis is mostly used in the plastics industry, can be used for casting, molding, layering and foaming processing methods to formHigh molecular weight epoxy resin is used in the coating industry, mainly used in metal-based ships and steel structure protection layer, but also as an ion electrophoresis coating seasoning material, a large number of used as a car body primer, its chemical and alkaline resistance is better than phenolic resin coatings and polyester coatingsepoxy resin is known as "universal glue", widely used in a variety of substances such as building materials, aircraft and missile parts, electrical and electronic parts, such as bondingEpoxy resins can also be used as textile finishing agents, building insulation materials and decorative materials, and are also used in cutting-edge technology and military fields