聚氨酯/有机蒙脱土纳米复合材料的合成与表征  

Synthesis and characterization of polyurethane/organo- montmorillonite nanocomposites

作　　者：徐荣静[1] 张新敏[1] 

机构地区：[1]河南石油勘探局炼化处,河南南阳473132

出　　处：《合成橡胶工业》2003年第6期351-354,共4页China Synthetic Rubber Industry

摘　　要：采用共沸法精制有机蒙脱土 ,估算了有机蒙脱土中吸附水质量分数约为 8.3% ,结构水的质量分数约为 4 .1%。用两步法原位聚合制备了聚氨酯 /有机蒙脱土 (PU/MMT)纳米复合材料 ,表征了纳米复合材料的形态、动态力学性能和物理机械性能。结果表明 ,有机蒙脱土对聚氨酯有增强和增韧双重作用。有机蒙脱土对聚合物分子的限制作用使PU/MMT纳米复合材料的玻璃化转变温度升高 。The water absorption of organo-montmorillonite (MMT)was studied using TGA and FTIR, and MMT was refined by boiling with toluene. PU/MMT nanocomposites were synthesized,its morphology, thermal dynamic mechanical properties and tensile behavior were investigated by DMTA .It was found that the intercalated PU/MMT was reinforced and toughened with the addition of nanometer MMT layers. The interaction between PU and MMT increased the T g, storage modulus and loss modulus of PU/MMT.

关 键 词：有机蒙脱土 聚氨酯 纳米复合材料 形态 物理机械性能 

分 类 号：TB383[一般工业技术—材料科学与工程]