利用原位插层法制备出了混合型聚氨酯插层有机蒙脱土纳米复合材料(HPU/OMMT);研究了聚己二酸-1,4-丁二醇酯二醇插层有机蒙脱土(PBA/OMMT)用量对纳米复合材料平均粒径、黏度、Zeta电位、玻璃化转变温度(Tg)、力学性能和热稳定性等性能的影响.结果表明,增加PBA/OMMT的用量,乳液的平均粒径逐渐增大,黏度变化不大,Zeta电位依次降低;同时,纳米复合材料的Tg从-58.87℃上升至-57.51℃,拉伸强度和断裂伸长率均先上升后降低.当OMMT的质量分数为5％时,HPU/OMMT膜的初始降解温度和中心降解温度分别为319.6℃和416.2℃,表现出较好的热稳定性.
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