关键词: 聚硅氧烷, 面漆剥落, 涂层剥落评价体系, 涂层修复

Abstract: Marine paint, as an indispensable production material, plays multiple roles in ship construction, dock repair and daily maintenance. The new generation of acrylic modified polysiloxane top coat is an inorganic mixed top coat with high performance, two component and high solid content, which is superior to the typical polyurethane top coat. The polysiloxane topcoat of a special vessel was peeling off in a large area after 10 years. The peeling amount, size and depth of the coating on special vessels are comprehensively analyzed and evaluated based on the coating peeling evaluation system. The appropriate surface treatment method is selected through the peeling equivalent. It is verified by a small scale test that the topcoat repair effect of this method is more ideal.

Key words: polysiloxane, topcoat peeling, coating peeling evaluation system, coating repair