热塑性含氟聚氨酯弹性体的制备与性能  

The Synthesis and Property of Thermoplastic Fluorinated Polyurethane Elastomer

作　　者：刘涛[1] 叶林[1] 刘永刚[2] 聂福德[2] 

机构地区：[1]高分子材料工程国家重点实验室(四川大学),四川大学高分子研究所,四川成都610065 [2]中国工程物理研究院化工材料研究所,四川绵阳621014

出　　处：《高分子材料科学与工程》2009年第6期143-146,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(10676024)

摘　　要：以聚酯多元醇、4,4′-二苯基甲烷二异氰酸酯(MDI)和六氟双酚A为原料,采用一步法合成了一系列热塑性含氟聚氨酯弹性体(F-TPU),采用红外光谱(FT-IR)、凝胶渗透色谱(GPC)、动态力学分析(DMA)、原子力显微镜(AFM)等分析方法对其组成和结构进行了表征,研究了聚氨酯分子结构参数与其力学性能关系。结果表明,所制备的F-TPU具有较高分子量、力学性能及阻尼性能,由于氟元素的引入使其表面张力相对TPU降低,并存在明显的软硬段微相分离结构。A series of polyester-based fluorinated polyurethanes （F-TPU） were prepared from polyester polyol, diphenylmethane-4, 4＇-diisocyanate （MDI） and bisphenol AF by one-step bulk synthesis. The composition and structure of F-TPU were characterized through the methods of FT-IR, GPC, DMA and AFM analysis. The effect of the molecular structure parameters of F-TPU on the mechanical property was investigated. The results show that the fluorinated polyurethane present relatively high molecular weight, mechanical properties and damping properties. It has lower surface tension than TPU due to the introduction of fluorine onto its molecule chain. There is micro-phase separation of the soft and hard segment of F-TPU.

关 键 词：热塑性含氟聚氨酯弹性体 阻尼性能 力学性能 表面性能 微相分离 

分 类 号：TQ334.1[化学工程—橡胶工业]