Author(s)

H. L. Li, Z. W. Yin, D. Jiang, L. Y. Jin, Y. Q. Cui, J. Cao

Abstract

Three different PTFE based fabric composites were prepared, and the tribological behaviors of these composites under different loads and speeds were studied. The morphologies of the worn surface and the debris were analyzed by means of scanning electron microscopy. In addition, a laser microscopy (3D profile measurements) was used to analyze the wear volume of the fabric composites. The results demonstrated that the composite weave structure and shape of the yarn have an influence on the tribological behavior of PTFE based composites. Generally, the wear resistance of the single layer fabric composites is better than that of the double layer fabric composites, and the friction coefficient of tape yarn fabric composites is lower than that of the multifilament yarn fabric composites. In addition, loads and speeds also play an important influence on the tribological behavior of the composites. For all samples, the friction coefficient decreased with increasing load. However, with the increase of the speed, the friction coefficient of all samples first increased and then decreased.

Keywords

polymer-matrix composite, friction, wear, single layer, double layer, PTFE, Nomex, cotton, bearing