Лако-красочные материалы — производство

Epoxy resins are thermosetting polymers, and the final properties of the polymer network are largely influenced by proper selection of the curing agent. Cross-linking of epoxy resins may be carried out through epoxide as well as hydroxyl groups. These reactions may be of the ambient curing or thermal curing type. The electron-deficient carbon atom of the oxirane ring is conducive to nucleophilic attack and therefore can react with a wide range of nucleophiles. The order of reactivity of most common nucleophiles used as curing agents is amine > phenol > carboxylic acid > alcohol. This chapter will briefly describe important classes of curing agents for epoxy resins.