玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (3): 76-80.

• 应用研究 • 上一篇    下一篇

基体性能对芳纶Ⅲ纤维复合材料力学性能的影响

李明明, 严文聪, 王晓洁   

  1. 西安航天复合材料研究所,西安710025
  • 收稿日期:2016-10-14 出版日期:2017-03-25 发布日期:2017-03-28
  • 作者简介:李明明(1985-),男,硕士,主要从事高性能航天复合材料方面的研究,lmm1217@126.com。

EFFECT OF MATRIX′S PROPERTIES ON THE MECHANICAL PROPERTIES OF ARAMID FIBER Ⅲ COMPOSITES

LI Ming-ming, YAN Wen-cong, WANG Xiao-jie   

  1. Xi′an Aerospace Composites Research Institute, Xi′an 710025, China
  • Received:2016-10-14 Online:2017-03-25 Published:2017-03-28

摘要: 设计了三种环氧树脂基体,研究了基体性能对芳纶Ⅲ纤维复合材料力学性能的影响,对比分析了不同韧性的两种复合材料层间剪切破坏过程的声发射特性参数。结果表明:设计的R1、R2、R3三种树脂基体其韧性为R1>R2>R3;芳纶Ⅲ纤维复合材料层间剪切强度分别为49 MPa、44.8 MPa、40.1 MPa,层间剪切性能随树脂基体韧性的增加而增大;声发射实验表明,基体韧性增加,复合材料急剧损伤得到延迟,声发射事件数明显减少。

关键词: 芳纶Ⅲ纤维, 基体性能, 层间剪切强度, 声发射

Abstract: Three kinds of epoxy resin were designed and the effect of matrix′s properties on the mechanical properties of aramid fiber Ⅲ composites were studied. Acoustic emission characteristic parameters of interlaminar shear failure process of composites with different toughness were compared. The results show that the toughness of the three kinds of resin matrix was R1>R2>R3. The interlaminar shear strength (ILSS) of aramid fiber Ⅲ composites were 49 MPa, 44.8 MPa, and 40.1 MPa. ILSS is increased with the increase of the toughness of the resin matrix. Acoustic emission experiments show that with the increase of the matrix′s toughness, the sharp damage of the composites was delayed, and the number of acoustic emission events was significantly reduced.

Key words: aramid fiber Ⅲ, matrix′s properties, interlaminar shear strength, acoustic emission

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