Improved fracture toughness of carbon fibre/epoxy composite laminates using dissolvable thermoplastic fibres

被引：140
作者：
Wong, Doris W. Y. [1 ,2 ]
Lin, Lin [3 ]
McGrail, P. Terry [4 ]
Peijs, Ton [1 ,2 ,4 ]
Hogg, Paul J. [5 ]
机构：
[1] Queen Mary Univ London, Ctr Mat Res, London E1 4NS, England
[2] Queen Mary Univ London, Sch Engn & Mat Sci, London E1 4NS, England
[3] Mickleby, Saltburn By The Sea TS13 5LX, Cleveland, England
[4] Eindhoven Univ Technol, Eindhoven Polymer Labs, NL-5600 MB Eindhoven, Netherlands
[5] Univ Manchester, N Western Composite Ctr, Manchester M60 1QD, Lancs, England
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2010年 / 41卷 / 06期
关键词：
Carbon fibre; Polymer fibre; Fracture toughness; Toughened epoxy; REINFORCED COMPOSITES; HYBRID COMPOSITES; MECHANICAL-PROPERTIES; DELAMINATION TOUGHNESS; PHASE-SEPARATION; EPOXY COMPOSITE; TOUGHENED EPOXY; BLENDS; MATRIX; MORPHOLOGY;
D O I：
10.1016/j.compositesa.2010.02.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper reports on a novel toughening concept based on dissolvable phenoxy fibres, which are added at the interlaminar region in a carbon fibre/epoxy composite. The composites were prepared by resin infusion of carbon fibre fabric with the phenoxy introduced as a chopped fibre interleaf between the carbon fibre plies. The thermoplastic phenoxy fibre dissolved in the epoxy during curing at elevated temperatures and a phase separated morphology with phenoxy-rich secondary phase was formed upon curing. It was found that the average Mode-I fracture toughness value, G(1c) increased tenfold with only 10 wt.% (with regard to the total matrix content) phenoxy fibre added. Other properties such as Young's modulus, tensile strength and thermal stability were not adversely affected. The mechanical and thermal properties of the neat epoxy-phenoxy blends were also studied for comparison. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：759 / 767
页数：9
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