Effects of thermal aging on the blend phase morphology and tribological performance of PI/UHMWPE blend composites

被引：25
作者：
Cheng, Bingxue [1 ,2 ]
Duan, Haitao [2 ]
Chen, Song [2 ,3 ]
Shang, Hongfei [1 ]
Li, Jian [2 ]
Shao, Tianmin [1 ]
机构：
[1] Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China
[2] Wuhan Res Inst Mat Protect, State Key Lab Special Surface Protect Mat & Appli, Wuhan 430000, Peoples R China
[3] Hunan Inst Sci & Technol, Coll Mech Engn, Yueyang 414006, Peoples R China
来源：
WEAR | 2021年 / 477卷
关键词：
PI; UHMWPE blend; Thermal aging; Phase morphology; Tribological performance; POLYIMIDE-MODIFIED UHMWPE; WEAR PROPERTIES; BEHAVIOR; POLYPROPYLENE; FABRICATION; FRICTION;
D O I：
10.1016/j.wear.2021.203840
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Effects of thermal aging on the blend phase morphology of polyimide/ultrahigh molecular weight polyethylene (PI/UHMWPE) blend composites were studied by using Raman Mapping. Friction and wear tests were conducted to study the influence of thermal aging on the tribological properties of the blend composites. The results indicate that the phase morphology of PI/UHMWPE blend composites could be controlled by thermal aging. At relatively low thermal aging temperatures (100 degrees C, 120 degrees C), the blend with high PI/UHMWPE ratio tended to form continuous layered structures. As a consequence, the tribological performance was significantly improved. While for the blend with low PI/UHMWPE ratio, the improvement of tribological performance was not significant. For the blends thermal aged at relatively high temperature (150 degrees C), the tribological performance was poor due to significant phase separation that occurred after thermal aging.
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页数：8
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