Study on the synergistic effect of carbon fiber and graphite and nanoparticle on the friction and wear behavior of polyimide composites

• Published in: Materials in engineering Vol. 31; no. 8; pp. 3761 - 3768
• Main Authors: Wang, Qihua, Zhang, Xinrui, Pei, Xianqiang
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-09-2010
• Subjects: A. Polymer–matrix composites; B. Particulates and powders; E. Wear; Friction; Graphite; Lubrication; Nanocomposites; Nanomaterials; Nanostructure; Polyimide resins; Tribology; Wear resistance; A. Polymer–matrix composites; E. Wear; B. Particulates and powders
• ISSN: 0261-3069
• DOI: 10.1016/j.matdes.2010.03.017

In this paper, the effect of short carbon fiber (SCF), graphite (Gr) and nano-Si
3N
4 on the friction and wear behavior of polyimide (PI) composites were studied using a block-on-ring arrangement. Experimental results revealed that single incorporation of SCF and Gr can improve the friction-reducing and anti-wear abilities of the PI composites significantly. However, nano-Si
3N
4 deteriorated the wear resistance of the PI composite drastically as single filler. A synergistic effect was found for the combination of nano-Si
3N
4 and SCF and Gr, which lead to the best tribological properties. It also can be found that the filled PI composites exhibited better tribological properties under higher PV product (the product of load and sliding speed). Moreover, the filled PI composites showed better tribological properties under oil lubrication and worse tribological properties under water lubrication compared with that under dry sliding condition.