PTMG体系与PCL体系聚氨酯弹性体性能的研究  

Study on the Properties of Polyurethane Elastomers in PTMG System and PCL System

作　　者：吕小健 李廷廷 沈照羽 崔胜恺 徐祥 刘锦春[1] Lü Xiao-jian;LI Ting-ting;SHEN Zhao-yu;CUI Sheng-kai;XU Xiang;LIU Jin-chun(Key Laboratory of Rubber,Plastics and Engineering,Ministry of Education,College of Polymer Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学高分子科学与工程学院橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《塑料工业》2020年第S01期109-111,147,共4页China Plastics Industry

基　　金：山东省重点研发计划项目(2019GGX102044);山东省重大工程创新工程项目(2019JZZY020204)。

摘　　要：采用预聚体法合成聚丁二醇(PTMG)、聚己内酯(PCL)与二苯基甲烷二异氰酸酯(MDI)体系的聚氨酯弹性体。研究了纯PTMG体系和PCL体系、扩链剂并用及PTMG/PCL并用体系之间的性能差异。结果发现PCL体系的力学强度好于PTM G体系,压缩永久变形小,但耐低温性能和耐磨性不如PTM G体系。扩链剂BDO/E300并用的体系拉伸强度、撕裂强度、耐磨性好于纯BDO体系,但是压缩永久变形较大,耐低温性差。PTMG/PCL并用后体系力学强度、耐磨性和耐低温性均变差,压缩永久变形大。The polyurethane elastomers of polytetrahydrofuran ether polyols(PTMG),polycaprolactone polyols(PCL)and diphenylmethane diisocyanate(MDI)systems were synthesized by the prepolymer method.The performance differences between pure PTMG system and PCL system,the combined using of chain extender and PTMG/PCL combined system were studied.The results show that the mechanical strength of the PCL system is better than that of the PTMG system,and the compression set is small,however,the low temperature resistance and wear resistance are not as good as the PTMG system.The chain extender BDO/E300 combined system has better tensile strength,tear strength,and abrasion resistance than the pure BDO system,but the compression set is large and the low temperature resistance is poor.After using PTMG/PCL,the mechanical strength,abrasion resistance and low temperature resistance of the system are all worse,and the permanent compression deformation is large.

关 键 词：聚醚多元醇 聚酯多元醇 玻璃化转变温度 聚氨酯弹性体 扩链剂并用 

分 类 号：TQ334.9[化学工程—橡胶工业]