Classification by use：

    According to the use of curing agent can be divided into normal temperature curing agent and heating curing agent.Epoxy resin has excellent performance when curing at high temperature, but the coatings and adhesives used in civil construction need to be cured at room temperature due to heating difficulties;So mostly use fat amine, fat ring and polyamide, especially the winter use of coatings and adhesives have to and more isocyanate, or the use of a malodorous odor of poly lucid alcohol.

    As for the medium temperature curing agent and high temperature curing agent, it is necessary to choose with the heat resistance of the body and the heat resistance of curing, adhesion and drug resistance.Focus on polyamines and anhydrides.Due to the excellent electrical properties of the anhydride cured material, it is widely used in electronic and electrical fields.

    Aliphatic polyamine cured substance has good adhesion, alkali resistance and water resistance.Aromatic polyamines are also excellent in drug resistance.Due to the formation of hydrogen bond between amino nitrogen element and metal, it has excellent anti-rust effect.The higher the concentration of amine, the better the antirust effect.Anhydride hardeners form ester bonds with epoxy resins, showing high resistance to organic and inorganic acids, and generally exceeding the electrical properties of polyamines.