Fabrication of Polyimide-Modified UHMWPE Composites and Enhancement Effect on Tribological Properties

Q2 Materials Science

Polymer-Plastics Technology and Engineering Pub Date : 2018-05-03 DOI:10.1080/03602559.2017.1344854

Song Chen, Jian Li, Yongliang Jin, Jun Xiao, Tushar Khosla, M. Hua, D. Jia, H. Duan

引用次数: 9

Abstract

ABSTRACT Polyimide-modified ultrahigh molecular weight polyethylene (UHMWPE) composites were fabricated by hot-press molding process. Mesoscopic morphologies of polyimide/UHMWPE blending systems show high compatibility between the phases of polyimide and UHMWPE when the weight ratio of polyimide is no more than 50 wt%. Investigation of the tribological properties with a reciprocating ball-on-flat contact tribometer shows that the polyimide filler has important effects on the friction and wear behavior of UHMWPE composites. Compared to pure UHMWPE, the composite with 50 wt% polyimide improved tribological properties best and exhibited 43.1% reduction in friction coefficient and 66.7% reduction in wear volume loss. GRAPHICAL ABSTRACT

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聚酰亚胺改性超高分子量聚乙烯复合材料的制备及其对摩擦学性能的增强作用

采用热压成型工艺制备了聚酰亚胺改性超高分子量聚乙烯(UHMWPE)复合材料。聚酰亚胺/超高分子量聚乙烯共混体系的介观形貌表明，当聚酰亚胺的质量比不大于50%时，聚酰亚胺与超高分子量聚乙烯的相相容性较好。用往复球-平接触摩擦计对超高分子量聚乙烯复合材料的摩擦磨损性能进行了研究，结果表明，聚酰亚胺填料对超高分子量聚乙烯复合材料的摩擦磨损性能有重要影响。与纯UHMWPE相比，添加50%聚酰亚胺的复合材料摩擦学性能得到了最好的改善，摩擦系数降低43.1%，磨损体积损失降低66.7%。图形抽象

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