Reversibly self-healable polymer networks including hindered urea bonds and use thereof

摘要

The present invention relates to the manufacture and use of a poly(urethane acrylate) reversible self-healing network comprising a hindered urea bond capable of self-healing the damaged part of the coating surface caused by scratches, etc. More specifically, a polymer resin containing a hydroxyl group at the end of the side chain; And a polyfunctional isocyanate containing two or more hindered urea structures in the molecular structure and containing two or more isocyanate groups at the terminal and H-(O-CH ₂ -CH ₂ )n-OH (n is 1 to 10 A self-healing resin composition characterized in that it includes a thermoreversible multifunctional additive having a plurality of -OH groups at the end of the molecular structure produced by reaction with an integer), and a thermoreversible network is formed by mixing and curing it with a curing agent. It relates to a reversible self-healing network to be formed and a method of manufacturing the same.