硬段含量对PCL/PPDI型PUE性能的影响  

Effect of Hard Segment Content on the Properties of PCL/PPDI Type PUE

作　　者：李闯 董子辉 苏威铭 刘锦春[1] LI Chuang;DONG Zihui;SU Weiming;LIU Jinchun(Key Laboratory of Rubber and Plastic Materials and Engineering of the Ministry of Education,Qingdao University of Science and Technology,Qingdao 266042,Shandong,China)

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《聚氨酯工业》2023年第1期27-29,共3页Polyurethane Industry

摘　　要：以对苯二异氰酸酯(PPDI)、聚己内酯二醇(PCL)及扩链剂1,4-丁二醇(BDO)为原料,采用预聚体法合成了聚氨酯弹性体(PUE),研究了硬段含量对PUE硬度、常温及高温下力学性能、热性能等各项性能的影响。结果表明,随着硬段含量的提高,PUE材料的硬度、拉伸强度、高温拉伸强度和撕裂强度增大,拉断伸长率降低;PUE材料的玻璃化转变温度(Tg)提高。Polyurethane elastomer(PUE)was synthesized by prepolymer method using p-phenyl diisocyanate(PPDI),polycaprolactone diol(PCL)and 1,4-butanediol(BDO).The effects of hard segment content on the hardness,mechanical properties at room temperature and high temperature,and thermal properties of PUE were studied.The results showed that,with the increase of hard segment content,the hardness,tensile,tensile strength at high temperature and tear strength of PUE materials increased,the elongation at break decreased.The glass transition temperature(Tg)of PUE materials also increased.

关 键 词：聚氨酯弹性体 硬段 高温性能 对苯二异氰酸酯(PPDI) 

分 类 号：TQ333.95[化学工程—橡胶工业]