文章摘要
王超,王齐华,王廷梅.聚苯酯/玻璃纤维改性PTFE密封材料的热力学性能[J].润滑与密封,2017,42(8):1-5
聚苯酯/玻璃纤维改性PTFE密封材料的热力学性能
Investigation on Thermomechanical Behavior of Polybenzoate and Glass Fiber Filled PTFE Sealing Composites
  
DOI:10.3969/j.issn.0254-0150.2017.08.001
中文关键词: 聚四氟乙烯  聚苯酯  玻璃纤维  高温蠕变性能  压缩回复性能
英文关键词: polyterafluoroethylene  polybenzoate  glass fiber  creep behavior at high temperature  compression and recovery property
基金项目:国家自然科学联合基金项目(U1630128).
作者单位E-mail
王超 中国科学院兰州化学物理研究所 wangc@licp.cas.cn 
王齐华   
王廷梅   
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中文摘要:
      采用动态热机械分析仪等手段分析研究聚苯酯/玻璃纤维/聚四氟乙烯(POB/GF/PTFE)密封材料的动态和静态热力学行为,考察不同含量的POB和GF对PTFE复合材料的储能模量、高温压缩-回复和蠕变性能的影响。结果表明,POB和GF的加入可显著提高PTFE复合材料的储能模量和热变形温度;在0~30%质量分数范围内,随着POB质量分数的增加,PTFE复合材料的压缩率和回复率均呈现下降趋势,而高温蠕变量则先降低后增大,然后又降低;在质量分数20%POB填充PTFE复合材料基础上,随着GF质量分数的增大,PTFE复合材料的压缩率、回复率和高温蠕变量均呈现先降低后增大,然后又降低的趋势。
英文摘要:
      Dynamic and static mechanical behaviors of polybenzoate/glass fiber/polytetraluoroethylene (POB/GF/PTFE) sealing composites at high temperature were investigated using Dynamic Mechanical Analysis (DMA).Effects of weight content of POB and GF on the storage modulus,thermal transition temperature and creep behavior were explored.The results show that the addition of POB and GF can effectively improve the storage modulus and thermal transition temperature.With the increasing weight content of POB from 0 to 30%,the compression and recovery ratio of the blends are declined,and creep resistance is first decreased,then increased,and finally decreased.The compression and recovery ratio of the blends are first decreased,then increased,and finally decreased with the increasing weight content of GF in the 20%POB/PTFE composite
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