文献类型：期刊文献

中文题名：聚醚型聚氨酯的氢键、微相分离及性能

英文题名：HYDROGEN BOND BEHAVIOR ,MICROPHASE SEPARATION AND PROPERTIES OF POLYETHER TYPE POLYURETHANE

作者：王庚超[1];马敏生[1];张志平[1]

机构：[1]华东化工学院材料科学研究所,上海200237

年份：1991

卷号：14

期号：6

起止页码：409

中文期刊名：合成橡胶工业

外文期刊名：China Synthetic Rubber Industry

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSCD:【CSCD_E2011_2012】；

语种：中文

中文关键词：聚醚型;聚氨酯;氢键;微相分离

外文关键词：polyether type polyurethane ; hydrogen bond ; relation between structure and property ; physical property

摘要：用本体一步法合成了5种不同硬段含量(11.0％～46.9％)的二苯甲烷-4,4′-二异氰酸酯/环氧乙烷封端型聚环氧丙烷聚醚/乙二醇的聚醚型聚氨酯,并借助于IR,DSC,DMS和材料试验机等手段对该聚氨酯的氢键、微相分离及力学性能进行了表征。结果表明:随着硬段含量的增加,其>NH与微区中的>C=O的氢键化程度逐渐提高,软段微区中—O—的氢键化程度逐渐降低;微相分离程度逐渐提高;拉伸强度及硬度随之增加,扯断伸长率在硬段含量40％左右出现极大值。
Polyether type polyurethane with the constituent diphenylmethane-4,4 ' - diisocyanate (MDI), polypropylene oxide - epoxy ethane (PPO - EO) and chain extender 1,2 - ethandiol (ED) was synthesized using one -step process .The hydrogen bond behavior .microphase separation and properties of the polyether type polyurethane were characterized by IR , DSC , DMS and materials testing machine . The results showed that with the increase of hard segment content, the fraction of hydrogen bond of C= O group increased and the fraction of hydrogen bond of - O -group decreased .The tensile stress and hardness enhanced ,the maximum elongation occured at 40% hard segment content .