高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (5): 948.

• 研究论文 • 上一篇    下一篇

改性聚乙二醇修饰高交联度不饱和聚酯网络结构的动态力学分析

朱立新, 许家瑞   

  1. 中山大学化学与化学工程学院材料科学研究所, 聚合物材料与功能材料教育部重点实验室, 广州 510275
  • 收稿日期:2003-04-29 出版日期:2004-05-24 发布日期:2004-05-24
  • 通讯作者: 许家瑞(1952年出生),博士,教授,博士生导师,从事高分子材料及复合材料研究.E-mail:cesxjr@zsu.edu.cn E-mail:cesxjr@zsu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:59625307);广东省教育厅“千百十人才”专项基金(批准号:Q02014)项目)资助

Dynamic Mechanical Analysis for Network Structure of High Crosslinking Degree Unsaturated Polyester Modified by Polyethylene Glycol

ZHU Li-Xin, XU Jia-Rui   

  1. Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Materials Science Institute, Department of Chemistry, Zhongshan University, Guangzhou 510275, China
  • Received:2003-04-29 Online:2004-05-24 Published:2004-05-24

摘要: 合成了一系列含有反应活性端基的改性聚乙二醇,并用其对BMC(团状模塑料)专用的高交联度不饱和聚酯进行增韧.结果表明,含有反应性马来酸酐端基的聚乙二醇参与了不饱和聚酯的固化反应,可在交联网络中构成不同长度的柔性链段,在显著提高不饱和聚酯的韧性的同时,基本保持了材料的模量及其它力学性能.用动态力学分析(DMA)对不饱和聚酯交联网络结构进行了系统研究.

关键词: 不饱和聚酯, 反应性聚乙二醇, 增韧, 动态力学分析(DMA)

Abstract: A series of reactive maleic anhydride terminated polyethylene glycol was synthesized and used as a toughening modifier of the unsaturated polyester specified for Bulk Moulding Compounds (BMC). It was shown that the toughening modifier could participate in the curing reaction of the unsaturated polyester and construct different lengths of soft segments in the network, which has significantly increased the impact strength of the unsaturated polyester, whereas other mechanical properties such as tensile strength, flexural strength and modulus remain unchanged. The dynamic mechanical behavior of the cross-linked unsaturated polyester network was investigated by DMA.

Key words: Unsaturated polyester, Reactive polyethylene glycol, Toughening, Dynamic mechanical analysis(DMA)

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