活性偶联剂改性纳米凹凸棒/不饱和聚酯聚氨酯复合材料的研究  

Research of unsaturated polyester polyurethane(UPPU) / attapulgite(AT) modified with active coupling agent

作　　者：杨保平[1] 魏小赟[1] 崔锦峰[1] 陈碧碧[1] 崔卓[1] 郭军红[1] 

机构地区：[1]兰州理工大学石油化工学院,兰州730050

出　　处：《化工新型材料》2015年第5期130-133,共4页New Chemical Materials

基　　金：甘肃省自然科学研究基金计划(1112RJZA019);甘肃省高校科研基本业务费

摘　　要：采用丙烯酰氯和γ-氨丙基三乙氧基硅烷(KH550)通过取代反应合成活性偶联剂,纳米凹凸棒(AT)经活性偶联剂改性后与不饱和聚酯聚氨酯树脂接枝得到不饱和聚酯聚氨酯纳米复合材料。用X射线衍射(XRD)、红外吸收光谱(FTIR)、扫描电镜(SEM)、力学性能等检测对纳米复合材料的结构与性能进行了表征。结果表明当加入质量分数为1.5%的改性纳米AT时,纳米复合材料的晶型没有被破坏。纳米粒子不但能够在UPPU基体中达到均匀分散,且其机械性能有一定改观。Acryloyl chloride was firstly modified with 3-aminopropyltriethoxysilane（KH550） by substitution reaction to obtain a new type of active coupling agent. Then attapulgite（ AT） was modified with this new coupling agent and the UP- PU/AT nanocomposities were prepared by chemical grafting method. The properties of material were investigated by XRD, FTIR,SEM and mechanics performance testing. Results showed that when the mass fraction of modified AT was 1.5wt%, the crystal form of material had not been destroyed. Nanoparticles can not only uniformLy dispersed in the UPPU matrix, but also its tensile properties was certainly improved.

关 键 词：活性偶联剂 不饱和聚酯聚氨酯 纳米凹凸棒 纳米复合材料 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]