摘要
借助锥体磨的研磨剪切外力,将聚醚多元醇插层进入蒙脱土片层中,使其片层间距扩大并发生部分剥离,从而利用本体插层聚合法制备了综合性能优异的聚氨酯/蒙脱土纳米复合弹性体材料。当有机蒙脱土添加量仅为1%时,其拉伸强度比纯聚氨酯弹性体高30%,达到30.2MPa,断裂伸长率也略有增加。TGA及吸水实验分析表明聚氨酯/蒙脱土纳米复合材料有更高的热失重温度和更低的吸水率。研究了蒙脱土含量对聚氨酯/蒙脱土纳米复合材料各项性能的影响。
A kind of polyurethane/ montmorillonite (PU/MMT) nanocomposite based on poly (propylene glycol)(PPG) and toluene-diisocyanate(TDI)was synthesized by intercalative polymerization technology and the function of shear stress of cone grinder. When the clay content reaches only 1%, the tensile strength are (1.3) times to that of the pure PU and the elongation at break increases a little. PU/MMT nanocomposite have higher heat-resistant temperature and less rate of water absorption compared to the pristine polyurethane. In addition, the clay contents effect the properties of the nanocomposites.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2005年第1期195-198,共4页
Polymer Materials Science & Engineering
关键词
聚氨酯
蒙脱土
纳米复合材料
插层聚合
nanocomposite
polyurethane
montmorillonite
intercalative polymerization
