The main application areas of epoxy resins

1. Coating application

The application of epoxy resin in coatings accounts for a large proportion, and it can be made into varieties with various characteristics and uses.

Among them, epoxy resin paint is the most widely used, and epoxy resin paint has excellent properties: strong adhesion, abrasion resistance, impact resistance, corrosion resistance, impermeability, active chemistry, and it can prepare a variety of anticorrosive coatings, such as solvents. Coatings, high-solid coatings, powder coatings, water-based coatings; long shelf life. It can be widely used in: floor coating, wood floor coating, construction industry impermeability (mixing with concrete can improve the impermeability of concrete), building bonding waterproof (can be used as concrete adhesive and waterproof plugging material), almost All factories and shopping malls will have epoxy paint demand.

Coatings made of epoxy resin have the same properties: excellent chemical resistance, especially alkali resistance; strong paint film adhesion, especially to metals; good heat resistance and electrical insulation; paint film protection The color is better.

However, the bisphenol A epoxy resin coating has poor weather resistance, and the paint film is easy to powder and lose gloss in the outdoors, and it is not suitable for outdoor coatings and high-decorative coatings. Therefore, epoxy resin coatings are mainly used as anti-corrosion paints, metal primers, and insulating paints, but coatings made of heterocyclic and alicyclic epoxy resins can be used outdoors.

2. Adhesive application

In addition to the poor adhesion of epoxy resin to non-polar plastics such as polyolefins, it is suitable for various metal materials such as aluminum, iron, and copper; non-metallic materials such as glass, wood, concrete, etc.; and thermosetting plastics such as phenolic and amino , Unsaturated polyester, etc. have excellent bonding properties, so it is called a universal glue. Epoxy adhesives are an important variety of structural adhesives.

3. Pouring of electronic appliances

Due to epoxy resin's unique advantages such as high insulation performance, high structural strength and good sealing performance, epoxy resin has been widely used in insulation and packaging of high and low voltage electrical appliances, motors and electronic components, and has developed rapidly. Mainly used for: 1. Pouring of insulation packages for electrical appliances and motors. Manufacturing of integrally sealed insulation packages for high and low voltage electrical appliances such as electromagnets, contactor coils, mutual inductors, and dry-type transformers. It has developed rapidly in the electrical industry. It has developed from normal pressure casting and vacuum casting to automatic pressure gel forming.