Application Fields of Epoxy Resin

Introduction to the preface
Epoxy resin has excellent physical, mechanical, and electrical insulation properties, adhesive properties with various materials, and flexibility in its use process that other thermosetting plastics do not possess. Therefore, it can be made into coatings, composite materials, casting materials, adhesives, molding materials, and injection molding materials, and is widely used in various fields of the national economy.
Paint Usage
The application of epoxy resin in coatings accounts for a large proportion, and it can be made into various varieties with different characteristics and uses. Its commonalities:
1. Excellent chemical resistance, especially alkali resistance.
2. The paint film has strong adhesion, especially to metals.
3. It has good heat resistance and electrical insulation.
4. The paint film has good color retention.
However, the weather resistance of bisphenol A epoxy resin coating is poor, and the paint film is prone to powdering and loss of gloss in outdoor environments, making it unsuitable for outdoor use and high decorative coatings. Therefore, epoxy resin coatings are mainly used as anti-corrosion coatings, metal primers, and insulation coatings, but coatings made of heterocyclic and alicyclic epoxy resins can be used outdoors.
Adhesive Usage
Epoxy resin not only has poor adhesion to non-polar plastics such as polyolefins, but also has poor adhesion to various metal materials such as aluminum, iron, and copper; Non metallic materials such as glass, wood, concrete, etc; And thermosetting plastics such as phenolic, amino, unsaturated polyester, etc. have excellent bonding properties, hence they are known as versatile adhesives. Epoxy adhesive is an important type of structural adhesive.