广州化学2024，Vol.49Issue(3)：1-6,6.DOI:10.16560/j.cnki.gzhx.20240315
湿气/热双重固化的聚酰亚胺有机硅涂层
Polyimide Silicone Coatings Manufactured by Moisture/Heat Dual Curing
摘要
Abstract
Developing coatings with high thermal resistance and strong adhesion is both necessary and challenging.Using maleic anhydride and 3-aminopropyl dimethoxymethylsilane as raw materials,a curable bismaleimide monomer,PMI,was synthesized via a one-pot method.A series of polyimide-silicone coatings were then obtained through a moisture/heat dual-curing process by reacting PMI with 3-(isocyanato)propyl trimethoxysilane.Subsequently,a partial curing process was conducted on PMI and 3-(isocyanato)propyl trimethoxysilane in a humid environment through deethanolization.Finally,the ultimate coating was successfully obtained through thermally initiated free radical polymerization.The resulting pre-polymer molecular skeleton consists of imide bonds,forming strong hydrogen bonds and silicon-oxygen bonds,which contribute to the stability and adhesion of the prepared coating under high-temperature conditions.The coatings were characterized through water contact angle,high-temperature resistance,surface morphology,adhesion,and hardness tests.The impact of crosslinking density on the performance of cured polysiloxane coatings was explored.Overall,the prepared coatings exhibit characteristics such as high-temperature resistance,strong adhesion,and high hardness,showing significant potential in the field of high-temperature protection.关键词
聚酰亚胺有机硅涂层/疏水/附着力/湿气/热双重固化Key words
polyimide-silicone coating/hydrophobicity/adhesion/moisture/heat dual-curing分类
化学化工引用本文复制引用
张耀东,黄月文,王峰,刘晖,王彬汁,王斌,谷子琛..湿气/热双重固化的聚酰亚胺有机硅涂层[J].广州化学,2024,49(3):1-6,6.基金项目
广东省科技专项资金-韶关科技计划项目(210906134536798) （210906134536798）
