硅烷单体改性环氧树脂的固化及性能  

Curing and Properties of Silane-Modified Epoxy Resin

作　　者：吴平章[1] 戎宗明[2] 陆冲[1] 程树军[1] 叶章基[3,4] 苏雅丽[3] 王胜龙[3,4] 

机构地区：[1]华东理工大学材料科学与工程学院,上海200237 [2]华东理工大学化学与分子工程学院,上海200237 [3]中国船舶重工集团公司第七二五研究所厦门分部,福建厦门361002 [4]海洋腐蚀与防护国防科技重点实验室,福建厦门361002

出　　处：《涂料工业》2012年第4期1-4,共4页Paint & Coatings Industry

基　　金：国家973计划项目(61310903)

摘　　要：分别用苯基三甲氧基硅烷(PTMS)和3-缩水甘油醚氧丙基三甲氧基硅烷(KH560)单体对环氧树脂进行了化学改性,通过红外(FT-IR)、核磁(1H NMR)对其化学结构进行了表征。以聚酰胺650为固化剂,用差示扫描量热仪(DSC)研究了固化物的固化动力学。此外还研究了涂膜的热失质量(TGA)、吸水率、附着力等性能。结果表明:苯基三甲氧基硅烷和3-缩水甘油醚氧丙基三甲氧基硅烷接枝上环氧树脂,与纯环氧树脂相比,改性后的树脂具有更好的热稳定性和更低的吸水率。改性环氧树脂固化后形成两面性质不同的涂层,与底材接触的涂层底面保留了环氧树脂原有的附着力,而涂层表面则具有高憎水性,起到防腐等作用。Epoxy resin was chemically modified with phenyltrimethoxysilane （PTMS） and γ -glycidoxypropyhrimethoxysilane （KH560）. The chemical structures were characterized by FT- IR, 1 H NMR. The curing process, with Polyamide 650 as curing agent, was investigated by differential scanning calorimetry （DSC）. The heatloss by thermogravimetric analysis （TGA）, water absorption and adhesion were also tested. Results showed that phenyhrimethoxysilane and γ- glycidoxypropyhrimethoxysilane were successfully grafted to epoxy resin and modified epoxy resin provided better thermal stability, less water absorption than the blank epoxy resin. The surface of epoxy coating layer connecting with substrate remained the instinct adhesive property of epoxy resin, while the other side exposed to air exhibited high hydrophobicity that applied as anticorrosion coating.

关 键 词：环氧树脂 硅烷 固化动力学 热性能 水吸收 

分 类 号：TQ630.43[化学工程—精细化工]