Three-component urethane modified unsaturated polyester gelcoat paint and method for forming urethane modified unsaturated polyester gelcoat layer using the same

摘要

The three-component urethane-modified unsaturated polyester gel coat paint includes a carbodiimide-modified unsaturated polyester resin containing a carbodiimide group formed by mixing a carbodiimide-modified urethane acrylate, a styrene-free type unsaturated polyester, and a pigment, and a carboxyl group. It is composed of a urethane acrylate containing and a curing agent that induces a radical reaction and an acylurea reaction. The urethane-modified unsaturated polyester gel coat film for protecting an eco-friendly lightweight composite material of the styrene-free type formed of the gel coat paint introduces a carboxyl group-containing urethane acrylate and a carbodiimide-modified urethane acrylate to achieve high crosslinking and a rigid structure. By imparting it, it can replace styrene and at the same time have excellent mechanical properties.