复合材料科学与工程 ›› 2026, Vol. 0 ›› Issue (8): 79-87.DOI: 10.19936/j.cnki.2096-8000.20260828.010

• 基础与力学性能研究 • 上一篇    下一篇

轻质低介电石英纤维/环氧树脂基复合材料的制备与性能

高畅, 栾贻浩*, 宋立, 邵明哲, 李洁, 王俊涛, 卢逸林, 刘战硕   

  1. 天津科技大学 轻工科学与工程学院,天津 300457
  • 收稿日期:2025-07-15 出版日期:2026-08-28 发布日期:2026-09-24
  • 通讯作者: 栾贻浩(1975—),男,博士,教授,博士生导师,研究方向为树脂基复合材料、高分子材料等,luanyihao@ 126.com。
  • 作者简介:高畅(2002—),女,硕士研究生,研究方向为功能高分子材料。

Preparation and properties of lightweight low dielectric quartz fiber/epoxy resin composites

GAO Chang, LUAN Yihao*, SONG Li, SHAO Mingzhe, LI Jie, WANG Juntao, LU Yilin, LIU Zhanshuo   

  1. School of Light Industry Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
  • Received:2025-07-15 Online:2026-08-28 Published:2026-09-24

摘要: 针对航空航天领域低导热及低介电性能需求,开发了一种轻质低介电石英纤维/环氧树脂基复合材料。通过差示扫描量热仪(Differential Scanning Calorimetry,DSC)及热失重分析仪(Thermogravimetric Analysis,TGA)对其热行为进行测定,采用固体密度计、导热系数测试仪及矢量网络分析仪探究其密度、导热系数和介电常数。结果表明,固化剂用量对环氧树脂交联反应效率具有显著影响。当固化剂用量为45%(以环氧树脂质量为基准)时,交联反应效率最高,固化反应热焓值最佳。当发泡剂用量为5%时,制备的石英纤维/环氧树脂基复合材料相比于未发泡的环氧树脂复合材料,密度降低27%,导热系数降低11%,介电常数降低31%,介电损耗降低48%。

关键词: 石英纤维, 环氧树脂, AC发泡剂, 介电性能, 导热系数

Abstract: A lightweight and low dielectric quartz fiber/epoxy resin based composite material has been developed to meet the requirements of low thermal conductivity and low dielectric performance in the aerospace industry. The thermal behavior of the material was determined by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Its density, thermal conductivity and dielectric constant were investigated using a solid density meter, thermal conductivity tester and vector network analyzer. The results show that the amount of curing agent has a significant impact on the crosslinking reaction efficiency of epoxy resin. The crosslinking reaction efficiency is the highest and the curing exothermic enthalpy value is the best when the amount of curing agent is 45%(based on the mass of epoxy resin). When the amount of foaming agent is 5%, the density of the prepared quartz fiber/epoxy resin composite material is reduced by 27% compared with the unfrothed epoxy resin composite material, the thermal conductivity is reduced by 11%, the dielectric constant is reduced by 31%, and the dielectric loss is reduced by 48%.

Key words: quartz fiber, epoxy resin, AC foaming agent, dielectric properties, thermal conductivity

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