Effect of kidney-type and circular cross sections on carbon fiber surface and composite interface

被引：46

作者：

Xu, Zhiwei ^{[2
]}

Li, Jialu ^{[2
]}

Wu, Xiaoqing ^{[2
]}

Huang, Yudong ^{[1
]}

Chen, Li ^{[2
]}

Zhang, Guoli ^{[2
]}

机构：

[1] Harbin Inst Technol, Dept Appl Chem, Harbin 150001, Peoples R China

[2] Tianjin Polytech Univ, Composite Res Inst, Key Lab Adv Braided Composites, Minist Educ, Tianjin 300160, Peoples R China

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2008年 / 39卷 / 02期

关键词：

carbon fiber; polymer-matrix composites; fibre/matrix bond; surface analysis; cross section shape;

D O I：

10.1016/j.compositesa.2007.10.015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A comprehensive experimental Study was conducted to identify the differences of the kidney-type section carbon fibers and circular section carbon fibers in the surface characteristics of fibers and interfacial properties of composites. It was revealed that the kidney-type fibers with larger specific surface area had a better adsorption characteristic and higher surface free energy compared with the circular fibers. Mechanical tests under interfacial shear and interlaminar shear loads have shown that the kidney-type fiber/epoxy composites outperformed the circular fiber/epoxy composites by a significant margin of 23.5% and 12.7%, respectively. The matrix was engulfed by the hollowed-out area of the kidney-type fiber, which allowed the matrix to secure more bonds, resulting in the effective transfer of the load applied to the fiber-reinforced composite system, Many kidney-type fibers overlapped and embraced with each other. Thus the large contact areas between fibers became strong bonding places and interface between fibers and matrix was not damaged easily. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：301 / 307

页数：7

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