多元醇种类对微孔聚氨酯弹性体性能的影响  

Effect of Polyol Type on Properties of Microcellular Polyurethane Elastomer

作　　者：沈照羽 崔盛恺 吕小健 李廷廷 徐祥 张建航 刘锦春[1] SHEN Zhao-yu;CUI Sheng-kai;LV Xiao-jian;LI Ting-ting;XU Xiang;ZHANG Jian-hang;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10期146-149,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：选用萘二异氰酸酯(NDI)体系,采用预聚体法,分别用聚四氢呋喃二醇(PTMG2000)、聚氧化丙烯醚二醇(PPG220)、聚己内酯二醇(PCL2000)、聚己内酯二醇(2202)、聚己内酯二醇(7201A),以1,4-丁二醇(BDO)为扩链剂,去离子水为发泡剂,合成微孔聚氨酯弹性体。研究多元醇种类对微孔聚氨酯弹性体力学性能、动态性能和低温性能的影响。结果表明,聚醚型微孔聚氨酯弹性体的损耗因子小,冲击回弹性能好,玻璃化转变温度低。聚己内酯酯型微孔聚氨酯弹性体的拉伸强度与撕裂强度大,耐热空气老化性能好,玻璃化转变温度高。Taking 1,4-butanediol(BDO)as chain extender,deionized water as foaming agent,polytetrahydrofuran glycols(PTMG2000),polyoxypropylene ether glycols(PPG220),polycaprolactone glycol(PCL2000),polycaprolactone glycol(2202),polycaprolactone glycol(7201 A)as raw materials,microcellular polyurethane elastomers were synthesized in naphthalene diisocyanate(NDI)system by prepolymerization.The effects of polyol types on the mechanical properties,dynamic properties and low-temperature properties of microcellular polyurethane elastomers were studied.The results show that the polyether microcellular polyurethane elastomer has low loss factor,good impact resilience,and low glass transition temperature.The polycaprolactone ester microcellular polyurethane elastomer has high tensile strength and tear strength,hot air aging resistance and high glass transition temperature.

关 键 词：多元醇种类 微孔聚氨酯弹性体 力学性能 热氧老化 动态性能 低温性能 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]