Investigation on mechanism of the improvement in tribological properties of carbon fiber reinforced polytetrafluoroethylene composites by surface treatment

被引：1

作者：

Qian-Qian, Shangguan ^{[1
,2
]}

Xian-Hua, Cheng ^{[1
]}

机构：

[1] School of Mechanical Engineering, Shanghai Jiaotong University

[2] College of Information, Mechanical and Electronic Engineering, Shanghai Normal University

来源：

Journal of Shanghai Jiaotong University (Science) | 2012年 / 17卷 / 04期

关键词：

Carbon fiber; Fiber-friction-angling effect; Friction and wear; Polytetrafluoroethylene (PTFE); Surface treatment;

D O I：

10.1007/s12204-010-1083-2

中图分类号：

学科分类号：

摘要：

Tribological properties of polytetrafluoroethylene (PTFE) composites filled with differently surface treated carbon fibers (CF), sliding against GCr15 steel under dry sliding conditions, were investigated on a block-on-ring M-2000 tribometer. Experimental results reveal that rare earths (RE) surface treatment reduces the friction and wear of CF-reinforced PTFE (CF/PTFE) composites. Scanning electron microscopy (SEM) investigation of worn surfaces of CF/PTFE composites shows that cracks or pores are visible on the worn surfaces of untreated and air-oxidated composite, while no crack and very few pores present on the worn surface of REtreated composite. The fiber-friction-angling effect makes carbon fibers angled and oriented along the frictional shearing force, and finally parallel to the friction surface, which makes interfacial adhesion become a key factor to tribological properties of CF/PTFE composite. With strong interfacial adhesion between carbon fiber and PTFE after RE surface treatment, carbon fibers are not easily detachable from the PTFE matrix in the process of fiber-friction-angling, which prevents the rubbing-off of PTFE, and accordingly improves the friction and wear properties of the composite. © Shanghai Jiaotong University and Springer-Verlag Berlin Heidelberg 2011.

引用

页码：490 / 493

页数：3

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