| 聚醚型聚氨酯的氢键、微相分离及性能 |
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| 引用本文： | 王庚超,马敏生,张志平.聚醚型聚氨酯的氢键、微相分离及性能[J].合成橡胶工业,1991,14(6):409-412. |
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| 作者姓名： | 王庚超 马敏生 张志平 |
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| 作者单位： | 华东化工学院材料科学研究所，华东化工学院材料科学研究所，华东化工学院材料科学研究所 上海 200237，上海 200237，上海 200237 |
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| 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。
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| 关 键 词： | 聚醚型聚氨酯 氢键 结构和性能的关系 机械性能 |
HYDROGEN BOND BEHAVIOR ,MICROPHASE SEPARATION AND PROPERTIES OF POLYETHER TYPE POLYURETHANE |
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| Wang Gengchao,Ma Minsheng and Zhang Zhiping.HYDROGEN BOND BEHAVIOR ,MICROPHASE SEPARATION AND PROPERTIES OF POLYETHER TYPE POLYURETHANE[J].China Synthetic Rubber Industry,1991,14(6):409-412. |
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| Authors: | Wang Gengchao Ma Minsheng and Zhang Zhiping |
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| Abstract: | 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 . |
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| Keywords: | polyether type polyurethane hydrogen bond relation between structure and property physical property |
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