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What are the properties of epoxy resin?

Sep 25, 2019

Why can epoxy resin develop rapidly? It is precisely because it has a lot of materials do not have the characteristics, these properties make it more prominent, so what are the properties of epoxy resin? 

1. Good craftsmanship:
Epoxy resin curing basically does not produce low molecular volatiles, so it can be formed under low pressure or contact pressure. Can cooperate with a variety of curing agents to produce solvent-free, high solid, powder coatings and waterborne coatings and other environmentally friendly coatings.

2. Excellent electrical insulation:
Epoxy resin is one of the best electrical properties of thermosetting resins.
3. High mechanical properties:
Epoxy resin has strong cohesion and compact molecular structure, so its mechanical properties are higher than those of general thermosetting resins such as phenolic resin and unsaturated polyester.
4. Strong adhesion:
Epoxy resin curing system contains highly active epoxy groups, hydroxyl groups and polar groups such as ether bond, amine bond and ester bond, which endow epoxy curing products with excellent adhesion to polar substrates such as metal, ceramic, glass, concrete, wood and so on.
5. The curing shrinkage is small:
It is usually 1% to 2%. It is one of the varieties with the smallest curing shrinkage in thermosetting resins. The linear expansion coefficient is also very small, which is generally 6 × 10 ~ 5 / ℃. So the volume changes little after curing.

6. Good stability and good resistance to chemicals:
Epoxy resin without alkali, salt and other impurities is not easy to deteriorate. As long as it is properly stored, its storage life is 1 year.

7. The heat resistance of epoxy cured resin is 80 ℃ and 100 ℃, and the heat resistance of epoxy resin is 200 ℃ or higher.