Epoxy resin refers to a polymer containing more than two epoxy groups in its molecule. It is the polycondensation product of epichlorohydrin and bisphenol A or polyol. Epoxy resin can be made into coatings, composite materials, casting materials, adhesives, molding materials and injection molding materials, and has been widely used in various fields of the national economy.

Because epoxy resin has excellent physical and mechanical properties, electrical insulation, adhesion to various materials and flexibility in use, it is not available in other thermosetting plastics.

Extended data

In addition to poor adhesion to nonpolar plastics such as polyolefin, epoxy resin has poor adhesion to various metal materials such as aluminum, steel, iron and copper. Non-metallic materials such as glass, wood and concrete. And thermosetting plastics such as phenolic resin, amino resin, unsaturated polyester, etc. They all have excellent adhesive properties, so they are called all-purpose adhesives. Epoxy adhesive is an important structural adhesive.

Epoxy resin has many unique advantages, such as high insulation performance, strong structural strength and good sealing performance. It is widely used in insulation and packaging of high and low voltage electrical appliances, motors and electronic components, and has developed rapidly.

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