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    杨宇润, 陈永林, 张志平, 王得宁, 胡春圃. 聚氨酯/环氧树脂互穿网络硬质泡沫塑料反应过程和微观结构[J]. 功能高分子学报, 2003, 16(2): 159-165.
    引用本文: 杨宇润, 陈永林, 张志平, 王得宁, 胡春圃. 聚氨酯/环氧树脂互穿网络硬质泡沫塑料反应过程和微观结构[J]. 功能高分子学报, 2003, 16(2): 159-165.
    shu
    YANG Yu-run, CHEN Yong-lin, ZHANG Zhi-ping, WAN De-ning, HU Chun-pu. Reaction Process and Morphology of the Rigid Foams Made from Interpenetrating Polymer Network of Poylurrethane/Epoxy Resin[J]. Journal of Functional Polymers, 2003, 16(2): 159-165.
    Citation: YANG Yu-run, CHEN Yong-lin, ZHANG Zhi-ping, WAN De-ning, HU Chun-pu. Reaction Process and Morphology of the Rigid Foams Made from Interpenetrating Polymer Network of Poylurrethane/Epoxy Resin[J]. Journal of Functional Polymers, 2003, 16(2): 159-165.
    shu

    聚氨酯/环氧树脂互穿网络硬质泡沫塑料反应过程和微观结构

    Reaction Process and Morphology of the Rigid Foams Made from Interpenetrating Polymer Network of Poylurrethane/Epoxy Resin

      摘要
    • 摘要: 聚氨酯／环氧树脂互穿网络(PU／EPIPN)硬泡中异氰酸根的消耗速度较纯PU硬泡高，是由于环氧树脂的固化荆同时也是异氰酸根反应的催化荆。而PU／EP IPN硬泡中环氧基的反应速度和反应程度均较纯EP网络低，归因于互穿网络对基团扩散的阻碍。在互穿网络硬泡形成过程中，存在环氧开环中所新产生的羟基与异氰酸根的反应、大分子多元醇中羟基与环氧基的反应以及异氰酸根与环氧基形成嗯唑烷酮的反应三种形成网络间的化学键的途径。同时由于PU／EPIPN硬泡高度的交联，使得IPN硬泡中两个网络具有良好的相容性。动态力学性能表明所有IPN样品都只有一个玻璃化温度。透射电镜表明IPN样品无明显的相界面。

       

      Abstract: The reaction rate of NCO groups by producing polyurethane/epoxy resin IPN foams was faster than that by producing pure PU foam, which was attributed to that the curing agents of epoxy resin were also acted as the catalysts for the reaction of NCO groups.

       

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