基于聚己内酯多元醇混炼型聚氨酯的性能  

Performance of kneadable polyurethane based on polycaprolactone polyol performance

作　　者：李侃旭 张建航 史中行 刘锦春[1] LI Kanxu;ZHANG Jianhang;SHI Zhongxing;LIU Jinchun(Key Laboratory of Rubber-plastics,Ministry of Education,School of Polymer Science and Engineering,Qingdao University of Science&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：《弹性体》2022年第3期14-17,63,共5页China Elastomerics

基　　金：城市轨道交通数字化建设与测评技术国家工程实验室开放课题基金资助(2021GY02)。

摘　　要：采用两步法由两种相对分子质量的聚己内酯(PCL)和二苯基甲烷而异氰酸酯(MDI)反应生成混炼型聚氨酯生胶。研究在不同硬段含量下,相对分子量为1 000和2 000的聚己内酯对混炼型聚氨酯的影响。结果表明,随着硬段含量的增加,混炼型聚氨酯的强度、耐磨性能、耐老化性能、硬度和阻尼性能均上升,拉断伸长率和生胶耐低温性能下降。在相同硬段含量下,由聚己内酯1000合成的混炼型聚氨酯各种性能要优于聚己内酯2 000。A two-step method is used to prepare a kneadable polyurethane raw rubber from the reaction of two molecular weights of polycaprolactone(PCL)and diphenylmethane diisocyanate(MDI).The eflects of the hard contents of PCL with relative molecular weights of 1000 and 2000 on kneadable polyurethane were studied.The experimental results show that with the increase of hard segment content,the strength,wear resistance,aging resistance,hardness and damping properties of kneadable polyurethane all increase,while the elongation at break and low temperature resistance decrease.The same hard segment content,the various properties of the kneading polyurethane synthesized from polycaprolactone 1000 are better than those of polycaprolactone 2000.

关 键 词：聚己内酯相对分子质量 硬段含量 混炼型聚氨酯 性能研究 

分 类 号：TQ323[化学工程—合成树脂塑料工业]