摘要： 以 γ-缩水甘油醚氧丙基三甲氧基硅烷(GPTMS)和甲基三甲氧基硅烷(MTMS)为前驱体,在酸性条件下共水解改性硅铝复合溶胶,加入胺类固化剂,制备了可常温固化的有机-无机杂化聚硅氧烷涂料。利用红外光谱(FT-IR)、热重-差热分析(TG-DTA)、扫描电镜(SEM)、接触角测试仪等考察了涂层的结构和性能。结果表明:四乙烯五胺(TEPA)加入量为涂料总质量的0.5%时,常温下固化7d,所得涂层的耐冲击性?附着力等性能较为优异,与热固化涂层性能接近。

关键词: 硅氧烷涂层, 常温固化, 改性, 固化剂

Abstract: With GPTMS and MTMS as the precursor and silica-aluminacom posite sol modified under acidic conditions,the organic-inorganic hybrid polysiloxane coatings were prepared at the presence of amine curing agent. The structure and properties of the coatings were investigated by FT-IR, TG-DTA, SEM and contact angle tester. The results indicated that the coatings comprising TEPA 0.5wt%cured for 7 days at room temperature exhibited excellent hardness, impact strength, contact angle, adhesion and corrosion resistance.

Key words: siloxane coating, room temperature curing, modification, curing agent

中图分类号: 

• TQ 635.2