Improved wettability and interfacial adhesion in carbon fibre/epoxy composites via an aqueous epoxy sizing agent

被引：105

作者：

Liu, Fuyao ^{[1
]}

Shi, Zhuo

Dong, Yubing ^{[1
]}

机构：

[1] Zhejiang Sci Tech Univ, Key Lab Adv Text Mat & Mfg Technol, Minist Educ, Hangzhou 310018, Zhejiang, Peoples R China

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2018年 / 112卷

基金：

中国国家自然科学基金;

关键词：

Carbon fibres; Polymer-matrix composites (PMCs); Interface/interphase; Wettability; FIBER SURFACE-TREATMENT; MECHANICAL-PROPERTIES; CONTACT-ANGLE; FIBER/EPOXY COMPOSITES; NANOTUBES; PERFORMANCE; INTERPHASE; STRENGTH; TENSILE; SULFONE;

D O I：

10.1016/j.compositesa.2018.06.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, a modified epoxy emulsifier (MEE) was synthesised for preparing an aqueous epoxy sizing agent, which was used to reinforce interfacial adhesion of carbon fibre (CF)/epoxy composites. The sizing agent was evenly wrapped on the fibre surface with tiny particles, as well as increased the surface roughness of fibres; meanwhile, the activated carbon atoms on the surface of sized CF were further increased, as confirmed via SEM, AFM and XPS. The contact angle (CA) of fibres was observed via drop-on-fibre system. The results showed that the wettability of CF was significantly improved and the CA of CF was reduced by approximately 23 degrees. According to the single-fibre fragmentation test, the interfacial shear strength of sized CF/EP composites increased by 70%-76%. The improvement of interfacial adhesion could be mainly attributed to the generation of chemical interaction bonds and the interface mechanical interlock of CF and the epoxy matrix.

引用

页码：337 / 345

页数：9

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