聚醚型热塑性聚氨酯弹性体的合成及性能  

Synthesis and Properties of Polyether Type Thermoplastic Polyurethane Elastomer

作　　者：索习东[1] 韩生[1] 白子文[1] 

机构地区：[1]上海应用技术学院化学与环境工程学院,上海201400

出　　处：《机械工程材料》2012年第12期84-88,93,共6页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(20976105);上海市教委科技创新重点项目(11ZZ179);上海市教委重点学科建设项目(J51503);上海市科学技术委员会课题项目(09QT1400600);上海市教委科研创新项目(09YZ387);曙光计划项目(11SG54)

摘　　要：研究了催化剂、原料品种、反应温度、硬段含量、R值等因素对聚醚型热塑性聚氨酯弹性体(TPU)合成的影响,并对产物力学性能进行了分析。结果表明:Bi-8、100-Ag与TPT三种催化剂的催化效果都随起始反应温度的升高而增强;随着硬段含量的提高,TPU的硬度、拉伸强度、定伸模量、撕裂强度都同步增大,断裂伸长率则减小;随着R值的增加,TPU的力学性能提高;同时,采用PTMEG-1000合成的TPU的综合性能比采用PTMEG-1800合成的要好;与路博润同硬度产品相比,采用PTMEG-1000合成的TPU在100%定伸模量、300%定伸模量和撕裂强度上有所提高,但断裂伸长率和拉伸强度表现稍差。The effects of catalysts, materials ,reaction temperature, hard segment content and R value on the synthesis of polyether type thermoplastic polyurethane elastomer（TPU） and mechanical property of synthetic TPU were investigated. Results show catalytic effect of three of catalyst, Bi-8, 100-Ag and TPT, rose up when the initial reaction temperature increased. With the increase of hard segment content, the hardness, tensile strength, set out modulus, tear strength of PTMEG-1000 and PTMEG-1800 TPU improved, but breaking elongation decreased. With the increase of R value, mechanical properties of TPU improved. TPU synthesized using PTMECrl000 exhibited better the comprehensive property than that using PTMEG-1800. Compared with the product of Noveon, TPU synthesized using PTMGE-1000 had better mechanical property in 100% elongation, 300% elongation modulus and tear strength, but worse in breaking elongation and tensile strength.

关 键 词：聚醚型TPU 催化剂 硬段含量 R值 性能 

分 类 号：TQ326.5[化学工程—合成树脂塑料工业]