Liquid-phase oxidation modification of ultra-high molecular weight polyethylene fiber and mechanical/tribological properties of the corresponding fiber-reinforced epoxy resin composites

被引：0
|
作者：
Li R. [1 ]
Li W. [1 ]
Meng L. [1 ]
Li C. [1 ]
机构：
[1] Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo
来源：
Li, Weiwei (liweiwei@nbu.edu.cn) | 1600年 / Cailiao Daobaoshe/ Materials Review卷 / 30期
关键词：
Composites; Mechanical properties; Surface modification; Tribological properties; UHMWPE fiber;
D O I：
10.11896/j.issn.1005-023X.2016.04.011
中图分类号：
学科分类号：
摘要：
The effects of chromic acid liquid-phase oxidation treatment on ultra-high molecular weight polyethylene (UHMWPE) fibers were investigated to improve the interfacial adhesion between UHMWPE fibers and epoxy resin (EP). The UHMWPE fibers/EP composites were prepared with chromic acid-treated UHMWPE fibers. The results showed that the liquid-phase oxidation could effectively increase the fiber's surface roughness, increase its crystallinity by 11.3% and reduce the contact angle with glycol by 14.12°. Compared with pure EP, the tensile strength of unmodified UHMWPE fibers/EP composite with a fiber content of 0.4wt% decreased by 18.04%, the tensile strength of liquid-phase oxidated UHMWPE fibers/EP composite with a fiber content of 0.6wt% decreased by 51.55%, the impact strength of unmodified UHMWPE (0.5wt% fiber content) and liquid-phase oxidated UHMWPE (0.4wt% fiber content) fibers/EP composite increased by 3.29% and 4.39%, respectively. Compared with the pure EP and unmodified UHMWPE fibers/EP composite, the flexural strength of liquid-phase oxidated UHMWPE fibers/EP composite increased by 6.55% and 19% respectively when fiber content was 0.3wt%. The friction coefficients of the unmodified and liquid-phase oxidated UHMWPE fibers/EP composite increased first and then decreased when the fiber content rose from 0 to 0.5wt%. © 2016, Materials Review Magazine. All right reserved.
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页码：41 / 46
页数：5
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