| abstract |
Disclosed is a preparation method for a cardanol modified polyamine curing agent having high anticorrosive performance, comprising subjecting cardanol, paraformaldehyde and an amine compound to a Mannich reaction, adding a water-soluble initiator to perform a polymerization reaction after the Mannich reaction is completed, and distilling off water and excess amine compound under reduced pressure after the polymerization reaction is completed, so as to obtain a cardanol modified polyamine curing agent. The chemical resistance and corrosion resistance of coating materials obtained by curing an epoxy resin with the curing agent are greatly improved, indicating that the use of the water-soluble initiator in the present invention can achieve good polymerization of olefins, and the molecules are obviously strengthened after the polymerization, thereby greatly improving the chemical resistance and corrosion resistance. |