OALib Journal期刊
ISSN: 2333-9721
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硅烷化聚氨酯复合催化剂的研究
DOI: 10.3724/SP.J.1105.2011.10170 , PP. 114-119
Keywords: 硅烷化聚氨酯 ,复合催化剂 ,蒙脱土 ,有机铋
Abstract:
以聚丙二醇、TDI、N-正丁基-γ-氨丙基三甲氧基硅烷和蒙脱土为主要原料,采用原位聚合方法研究了蒙脱土和有机铋化合物对环境友好和储存稳定的硅烷化聚氨酯催化作用.通过滴定法测试了反应体系中异氰酸根(NCO)含量的变化,发现蒙脱土可以催化NCO与OH的反应,且与有机铋化合物具有协同效应,利用在线红外分析仪证实了蒙脱土的催化效应.使用FTIR对硅烷化聚氨酯预聚体进行了表征,并用加速老化法研究了复合催化剂对预聚体的储存稳定性的影响,结果表明硅烷化聚氨酯/蒙脱土复合材料具有良好的储存稳定性,具有开发应用前景.
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