线型环氧类表面改性剂对尼龙/碳纤维复合材料性能的影响

doi:10.19936/j.cnki.2096-8000.20221128.011

复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (11): 77-81.DOI: 10.19936/j.cnki.2096-8000.20221128.011

线型环氧类表面改性剂对尼龙/碳纤维复合材料性能的影响

朱敏杰, 魏陇沙, 晏义伍^*

深圳航天科技创新研究院广东省先进聚合物复合材料工程技术研究中心,深圳518063

收稿日期:2021-11-09 出版日期:2022-11-28 发布日期:2022-12-30
通讯作者: 晏义伍(1980-),男,博士,研究员,主要从事复合材料方面的研究,yanyiwu@chinasaat.com。
作者简介:朱敏杰(1993-),男,硕士研究生,主要从事复合材料方面的研究。
基金资助:
广东省重点领域研发计划项目(2019B010929001)

Effect of linear epoxy surface modifiers on properties of nylon/carbon fiber composites

ZHU Min-jie, WEI Long-sha, YAN Yi-wu^*

Guangdong Provincial Engineering Research Center for Advanced Composite Materials, Shenzhen Academy of Aerospace Technology, Shenzhen 518063, China

Received:2021-11-09 Online:2022-11-28 Published:2022-12-30

摘要/Abstract

摘要： 针对碳纤维与尼龙之间存在界面相容性差的问题,以线型环氧树脂和短链聚酰胺为反应物制备出线型环氧聚合物及聚酰胺嵌段环氧树脂聚合物,然后在不退浆的基础上,直接对碳纤维进行改性处理,再将其与尼龙制备得到尼龙/碳纤维复合材料,通过表面能、力学性能、SEM等方法研究了改性碳纤维对尼龙/碳纤维复合材料性能的影响。研究表明:聚酰胺嵌段线型环氧聚合物的改性增加了碳纤维表面的粗糙度,碳纤维的表面能色散分量从5.63 mN/m提升至22.64 mN/m,复合材料的弯曲强度和层剪强度分别提高了74.8%和115.8%。

关键词: 碳纤维, 复合材料, 环氧树脂, 尼龙, 改性

Abstract: Due to the poor interfacial adhesion between the carbon fiber and nylon, linear epoxy polymer and polyamide block linear epoxy were synthestized as reactants. And the carbon fiber without desizing was modified by above synthetic products, respectively. Secondly, nylon/carbon fiber composites were prepared, and the effect of surface modifiers on the properties of nylon/carbon fiber composites was studied by surface energy, mechanical properties and SEM. The results showed that the surface roughness of carbon fiber was increased by the modification of linear epoxy and its block polymer, and the dispersion component of surface energy of carbon fiber was increased from 5.63 mN/m to 22.64 mN/m. Furthermore, the bending strength and interlaminar shear strength of the composites were increased by 74.8% and 115.8%, respectively.

Key words: carbon fiber, composite, epoxy resin, nylon, modification

中图分类号:

TB332

朱敏杰, 魏陇沙, 晏义伍. 线型环氧类表面改性剂对尼龙/碳纤维复合材料性能的影响[J]. 复合材料科学与工程, 2022, 0(11): 77-81.

ZHU Min-jie, WEI Long-sha, YAN Yi-wu. Effect of linear epoxy surface modifiers on properties of nylon/carbon fiber composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(11): 77-81.

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线型环氧类表面改性剂对尼龙/碳纤维复合材料性能的影响

Effect of linear epoxy surface modifiers on properties of nylon/carbon fiber composites

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