热空气老化对PBO/T700层间混杂复合材料力学性能的影响

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (1): 25-29.

热空气老化对PBO/T700层间混杂复合材料力学性能的影响

张承双, 包艳玲, 刘宁, 王健

西安航天复合材料研究所,西安710025

收稿日期:2016-06-28 出版日期:2017-01-28 发布日期:2017-01-28
作者简介:张承双(1983-),男,博士,高工,主要从事先进聚合物基复合材料成型工艺与应用研究。
基金资助:
国防科工局军品配套科研项目(JPPT-125-GJGG-31-2)

EFFECT OF HOT AIR AGING ON MECHANICAL PROPERTIES OF PBO/T700 HYBRID COMPOSITES

ZHANG Cheng-shuang, BAO Yan-ling, LIU Ning, WANG Jian

Xi'an Aerospace Composites Research Institute,Xi'an 710025, China

Received:2016-06-28 Online:2017-01-28 Published:2017-01-28

摘要/Abstract

摘要： 分别利用材料万能试验机和DMA研究了热空气老化对PBO/T700层间混杂复合材料静态力学性能和动态力学行为的影响。静态力学性能测试结果表明,经热空气老化不同时间后,PBO/T700层间混杂复合材料的拉伸强度和压缩强度均出现了一定程度的下降,最大降幅分别为12.7%和6.9%,拉伸模量从126 GPa增大到145 GPa,弯曲强度、弯曲模量和层间剪切强度变化较小。DMA测试结果表明,热空气老化使PBO/T700层间混杂复合材料的耐热性和刚性提高,随着老化时间的增加,E'向低温方向移动,E″向高温方向移动,说明复合材料的耐热性和刚性又开始下降。

关键词: PBO纤维, 碳纤维, 混杂复合材料, 静态力学性能, 动态力学行为

Abstract: The effects of hot air aging on static and dynamic mechanical properties of PBO/T700 hybrid composites were studied in this paper by using a universal testing machine and dynamic mechanical analysis (DMA). The static mechanical properties testing results indicate that the tensile strength and compressive strength of PBO/T700 hybrid composites declined after hot air aging, with maximum drop of 12.7% and 6.9%, respectively. The tensile modulus increased from 126 GPa to 145 GPa, while the flexural strength and modulus and the interlaminar shear strength of the composites show little changes. The DMA result shows that the heat-resistance property and rigidity of PBO/T700 hybrid composites increased to some extent after hot air aging. However, the E' and E″ of the composites shift toward low temperature and high temperature, respectively, with the increase of the aging time, which means some decline of heat-resistance property and rigidity of the composites.

Key words: PBO fiber, carbon fiber, hybrid composites, static mechanical properties, dynamic mechanical behavior

中图分类号:

TB332

张承双, 包艳玲, 刘宁, 王健. 热空气老化对PBO/T700层间混杂复合材料力学性能的影响[J]. 玻璃钢/复合材料, 2017, 0(1): 25-29.

ZHANG Cheng-shuang, BAO Yan-ling, LIU Ning, WANG Jian. EFFECT OF HOT AIR AGING ON MECHANICAL PROPERTIES OF PBO/T700 HYBRID COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2017, 0(1): 25-29.

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