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兵工学报 ›› 2022, Vol. 43 ›› Issue (2): 442-450.doi: 10.3969/j.issn.1000-1093.2022.02.022

• 论文 • 上一篇    下一篇

气凝胶改性石英纤维增强有机硅透波复合材料性能

孔国强1, 王康1, 于秋兵1, 李莹1, 魏化震1, 邵蒙1, 毕卫东1, 刘本学2, 尹磊1, 孙晓冬1   

  1. (1.山东非金属材料研究所, 山东 济南 250031; 2.齐鲁工业大学(山东省科学院)新材料研究所, 山东 济南 250014)
  • 上线日期:2022-03-28
  • 作者简介:孔国强(1986—),男,研究员,博士。E-mail: kongguoqiang2010@163.com

Properties of Aerogel Modified Quartz Fiber Reinforced Silicone Wave-transparent Composites

KONG Guoqiang1, WANG Kang1, YU Qiubing1, LI Ying1, WEI Huazhen1, SHAO Meng1, BI Weidong1, LIU Benxue2, YIN Lei1, SUN Xiaodong1   

  1. (1.Shandong Non-metallic Materials Institute,Jinan 250031,Shandong, China;2.Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Science), Jinan 250014, Shandong, China)
  • Online:2022-03-28

摘要: 以SiO2气凝胶、Al2O3气凝胶、ZrO2气凝胶为改性剂、甲基苯基有机硅树脂为基体,石英纤维布为增强材料,制备了气凝胶改性石英/有机硅复合材料。开展热重分析、动态热机械分析、力学性能测试、介电性能、扫描电子显微镜等测试实验,研究不同气凝胶改性对石英/有机硅复合材料的热性能、力学性能和介电性能的影响。结果表明:气凝胶的加入提升了石英/有机硅复合材料的热稳定性和力学性能,其中Al2O3气凝胶使复合材料的力学强度提高最多,其压缩强度和弯曲强度分别为145 MPa和192 MPa,较未改性时分别提高了122%和81%;气凝胶的加入使石英/有机硅复合材料的介电常数增大,但仍均低于3.5,介电损耗角正切值均小于0.01,保持了较好的介电性能。

关键词: 透波复合材料, 气凝胶, 有机硅树脂, 力学性能, 介电性能

Abstract: Quartz/silicone composites were prepared by using SiO2 aerogels, Al2O3 aerogels and ZrO2 aerogels as modifiers, methyl phenyl silicone resin as matrix, and quartz fiber as reinforcing material. Thermogravimetric analysis, dynamic thermomechanical analysis, mechanical properties test, dielectric properties test and SEM test were made for quartz/silicone composite. The effects of different aerogel modifications on the thermal, dielectric and mechanical properties of quartz/silicone composite were studied. The results show that the thermal stability and mechanical properties of quartz/silicone composite increase with the addition of aerogels. Al2O3 aerogels increase the mechanical strength of composites. The compressive strength and flexural strength of quartz/silicone composites are 145 MPa and 192 MPa, respectively, which are increased by 122% and 81% compared with unmodified composite. The dielectric constant of quartz/silicone composites increases with the addition of aerogels, but their dielectric constants are all less than 3.5 and their dielectric loss tangents are less than 0.01.

Key words: wave-transparentcomposite, aerogel, siliconeresin, mechanicalproperty, dielectricproperty

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