Knowledge about Polyamide hardeners in China_Hubei Bestway New Material Co., Ltd. All Right Reserved.

Polyamide hardeners in china is a widely used epoxy curing agent, mainly formed by the polycondensation reaction of dimer acid and polyamine, reactive primary and secondary amines in the molecular chain. Polyamide hardeners in China react with bisphenol A epoxy resin at room temperature or below room temperature, and the reaction is moderately heat-resistant. It cures slowly and has a long pot life.

Polyamide hardeners in china

Polyamide hardeners have a large carbon and hydrogen content in the molecular chain, and the cured epoxy is a highly plasticized rigid thermosetting polymer. This polymer is characterized by high tensile strength, compressive strength, and high flexural strength, but it is relatively rigid and has excellent impact resistance.

The appearance of polyamide is transparent or opaque milky white or light yellow pellets, the surface is horny, and the surface of hard products is shiny. The density of polyamide (crystalline phase density, amorphous density and density of general molded products) is different. The density of polyamide 6 and polyamide 6fi is relatively high. As the content of methylene in the molecule increases and the content of amide bonds (-NHCO-) decreases, the crystallinity of polyamide decreases and the density also decreases.