不饱和阳离子水性聚氨酯改性蒙脱土的制备与性能研究  

Preparation and properties of OMMT modified by unsaturated cationic water-based polyurethane

作　　者：熊召举[1] 李岩峰[1] 白延光[1] 张成龙[1] 王宁[1] 李再峰[1] 

机构地区：[1]青岛科技大学生态化工国家重点实验室培育基地,山东青岛266042

出　　处：《弹性体》2011年第6期9-12,共4页China Elastomerics

基　　金：山东省自然科学基金资助项目(Y2008B08);山东省教育厅科技发展计划资助项目(J08LC08);中国博士后基金特别资助项目(20090410370)

摘　　要：合成出一种不饱和水基阳离子聚氨酯树脂(UCWPU),以其作为插层剂并采用超声波助混技术对蒙脱土(MMT)进行有机改性,通过阳离子交换制备出含有不饱和官能团的活性有机蒙脱土(OMMT)。采用傅里叶变换红外光谱(FTIR)、广角X射线衍射(XRD)、透射电镜(TEM)、热失重分析(TGA)和显微电泳法等检测手段分别对改性后蒙脱土的结构、性能进行了分析表征。结果表明,改性后的蒙脱土层间距由原来的1.21nm增大到2.13nm,阳离子聚氨酯改性的蒙脱土粒子电性显正电。FT-IR和TGA测试结果表明UCWPU分子链稳定存在于蒙脱土层间。The montmorillonite（MMT）was origanically modified by unsaturated waterborne cat- ionic polyurethane（UCWPU）resin under the action of ultrasonic assistant mixing technology,and the reactive organo MMT（OMMT）with unsaturated functional groups was obtained by cation exchange process. The structure and properities of MMT were characterized by Fourier transform infrared spec- trometer,Wide angle X-ray diffraction, Therrno-gravimetric analysis and micro-clectrophoresis. The resuits showed that the interlayer space of OMMT was enlarged to 2. 13 nm from 1.21 nm, and the particles of MMT modified by UCWPU showed positive electricity. The results of FTIR and TGA con firmed that the novel intercalator of UCWPU macromolecules exist stably in layers of MMT.

关 键 词：不饱和阳离子水性聚氨酯 插层改性 蒙脱土 

分 类 号：TQ334[化学工程—橡胶工业]