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    曹琪, 刘朋生. 季戊四醇型HTPB-PU弹性体的研究[J]. 功能高分子学报, 2004, 17(2): 256-260.
    引用本文: 曹琪, 刘朋生. 季戊四醇型HTPB-PU弹性体的研究[J]. 功能高分子学报, 2004, 17(2): 256-260.
    shu
    CAO Qi, LIU Peng-sheng. Studies of HTPB-PU Elastomers with Extender Pentaerythrite[J]. Journal of Functional Polymers, 2004, 17(2): 256-260.
    Citation: CAO Qi, LIU Peng-sheng. Studies of HTPB-PU Elastomers with Extender Pentaerythrite[J]. Journal of Functional Polymers, 2004, 17(2): 256-260.
    shu

    季戊四醇型HTPB-PU弹性体的研究

    Studies of HTPB-PU Elastomers with Extender Pentaerythrite

      摘要
    • 摘要: 以端羟基聚丁二烯、液化改性MDI为原料，季戊四醇为扩链剂与交联剂制备季戊四醇型聚氨酯，并用IR、TG、DSC和SEM对其进行表征；研究了影响季戊四醇型聚氨酯的力学性能和热性能的因素。结果表明：随扩链剂用量的增大，季戊四醇型聚氨酯的拉伸强度和硬度增大，而断裂伸长率减小，同时热稳定性得到提高。SEM显示此弹性体中存在明显的相分离。

       

      Abstract: By using hydroxyl-terminated polybutadiene (HTPB), liquid-modified 4,4'-methylenebis (phenyl isocyanate) as raw materials and pentaerythrite as extender or crosslinking agent, polybutadiene-based polyurethane elastomers (HTPB-PU) were synthesized. The mod

       

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