摘要
用自由基聚合法制备了阳离子型羟基丙烯酸酯树脂,以甲苯-2,4-二异氰酸酯(TD I)和丁酮肟合成出半封端型TD I,将两种产物混合反应,制备出系列聚氨酯改性的丙烯酸酯树脂分散液。分散液成膜后,在高温(140℃)下解封的异氰酸酯官能团与丙烯酸酯树脂上的羟基反应得到异氰酸酯交联丙烯酸酯树脂膜。结果表明,随着交联度的提高,丙烯酸酯树脂的玻璃化转变温度升高,凝胶含量增加,拉伸性能、邵尔A硬度、耐腐蚀性及耐水性得以提高。
Cationic hydroxy-acrylate resin was synthesized by free-radical copolymerization, then the hydroxy-acrylic resin reacted with tolylene diisocyanate semi-blocked with methyl ethyl ketoxime and the polyurethane modified acrylate resins were obtained. At high temperature （140 ℃ ）, the deblocked isocyanate group would react with the residual hydroxyl group on the main chain of the resin,and the cross-linked acrylate resin films were obtained. The results showed that with the increase of the crosslinking density, the glass transition temperature and gel content increased gradually. The corrosion resistance, water-proof capability and the mechanical properties were all improved together.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
2008年第1期41-45,共5页
China Synthetic Rubber Industry
基金
山东省优秀中青年科学家奖励基金资助项目(2007BS04001)
山东省教育厅科技发展计划重点资助项目(J05D06)
关键词
丙烯酸酯树脂
交联度
异氰酸酯
玻璃化转变温度
凝胶含量
acrylate resin
crosslinking density
isocyanate
glass transition temperature
gel content
