摘要
采用插层聚合法合成了综合力学性能优异的聚氨酯 蒙脱土纳米复合材料 .X 射线衍射结果表明 ,蒙脱土以平均层间距不小于 4 5nm的宽分布分散在聚氨酯基体中 .加入 7 5wt%左右的蒙脱土 ,复合材料的拉伸强度高于纯PU基体的 2倍 ,断裂伸长率则高于纯PU基体的 4倍以上 .TGA分析表明 ,聚氨酯
A novel elastomeric polyurethane/clay (PU/Clay) nanocomposite based on poly(propylene glycol), glycerol propoxylate and toluene-diisocyanate were synthesized by intercalative polymerization technology. The results of X-ray diffraction study showed that the gallery distance of the clay was enlarged from 1.9 nm to 4.5 nm or more, Introducing about 7.5 wt% clay in the composites resulted in more than two-fold increase in the tensile strength and five-fold increase in the elongation at break as compared to those of the pure PU. Additionally, the thermal stability of the PU/Clay nanocomposites was also studied by TGA analysis. The thermal stability of the nanocomposites was increased slightly in comparing with the pure PU.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2001年第3期325-328,共4页
Acta Polymerica Sinica
基金
国家自然科学基金重点基金资助项目! (基金号 5 983 3 3 10
