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Application field of epoxy resin

2020-04-07 16:13:27

The excellent physical, mechanical and electrical insulation properties of epoxy resin, the bonding properties with various materials, and the flexibility of its application process are not available for other thermosetting plastics. Therefore, it can be made into coatings, composite materials, casting materials, adhesives, molding materials and injection molding materials, which are widely used in various fields of national economy.

1、 Coating

The application of epoxy resin in coatings accounts for a large proportion. It can be made into varieties with different characteristics and uses. Its commonness: 1. Excellent chemical resistance, especially alkali resistance.

2. The film has strong adhesion, especially to metal.

3. It has good heat resistance and electrical insulation.

4. The film has good color retention.

However, bisphenol-A epoxy coating has poor weather resistance, and the film is easy to be powdered and lose light in outdoor, which is not suitable for outdoor coating and high decorative coating. Therefore, epoxy resin coating is mainly used as anti-corrosion paint, metal primer, insulation paint, but the paint made of heterocyclic and alicyclic epoxy resin can be used outdoors.

2、 Adhesive

In addition to the poor adhesion of epoxy resin to non-polar plastics such as polyolefin, it has excellent adhesion to various metal materials such as aluminum, steel, iron, copper, non-metallic materials such as glass, wood, concrete, and thermosetting plastics such as phenolic, amino, unsaturated polyester, etc. Epoxy adhesive is an important type of structural adhesive.