Surface modification of high-performance polyimide fibres by using a silane coupling agent

被引：17

作者：

Zhou, Jiatao ^{[1
,2
]}

Liu, Fangfang ^{[1
]}

Dai, Xuemin ^{[1
]}

Jiao, Long ^{[1
]}

Yao, Haibo ^{[1
]}

Du, Zhijun ^{[1
]}

Wang, Hanfu ^{[1
]}

Qiu, Xuepeng ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Polymer Composites Engn Lab, 5625 Renmin St, Changchun 130022, Jilin, Peoples R China

[2] Univ Sci & Technol China, Changchun Inst Appl Chem, Hefei, Anhui, Peoples R China

来源：

COMPOSITE INTERFACES | 2019年 / 26卷 / 08期

基金：

国家重点研发计划;

关键词：

Polyimide (PI) fibre; silane coupling agent; surface modification; interfacial shear strength (IFSS); interlaminar shear strength (ILSS);

D O I：

10.1080/09276440.2018.1526607

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The silane coupling agent 3-aminopropyltriethoxysilane (KH-550) was used to modify the surface of two kinds of high-performance polyimide (PI) fibres (i.e., PI-1 and PI-2). The surface chemical composition, morphologies and roughness of modified PI fibres were characterised by XPS, SEM and AFM. Results showed that the elemental ratio between O and C, the surface oxygen concentration and the surface roughness increased with KH-550 concentration. However, the interfacial shear strength (IFSS) and interlaminar shear strength (ILSS) values of PI fibre/epoxy resin composites increased and then decreased with KH-550 concentration. When KH-550 concentration was increased to 4 wt%, the IFSS and ILSS values reached their maximum point. At this point, the IFSS values were found increase by 17.3% and 8.3% for PI-1 and PI-2, respectively, compared with their pristine state. Meanwhile, the ILSS values of PI-1- and PI-2-reinforced composites were found increase by 22.4% and 24.1%, respectively.

引用

页码：687 / 698

页数：12

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