石墨烯改性多孔聚酰亚胺轴承保持架材料性能研究

doi:10.11896/cldb.21030176

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Abstract Porous polyimide composite has become the first choice of the material of aerospace bearing cages due to its good self-lubricating property. However, its poor thermal conductivity and wear resistance can lead to the shortened bearing service life and seriously affect the reliability of the control system of the aerospace vehicle. By mechanically mixing the graphene-modified porous polyimide composite, this work studied the microstructure, tribological properties and thermal conductivity of the material. The results show that the modified porous polyimide composite has excellent tribological properties and thermal conductivity. When the content of graphene is 1.0wt%, the thermal conductivity and the wear rate of material is 0.41 W/(m·K) and 43.25×10^-5 mm³/(N·m), respectively, increasing by 36.9% and 27.3% over those of the unmodified composite material. As such, the modified composite cage has potential applications for prolonging the service life of aerospace bearings.

Key words： bearing cage porous polyimide graphene tribology

Published: 10 September 2022 Online: 2022-09-10

CLC number:

TQ323.7

Fund:National Key Technologies R ＆ D Program of China (JPPT-2017-147).

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	Articles by authors
	DENG Kaiwen
	NIU Rongjun
	SUN Xiaobo
	GUO Junli
	DENG Sier

Cite this article:

DENG Kaiwen,NIU Rongjun,SUN Xiaobo, et al. Material Property Study on Graphene Infused Porous Polyimide Bearing Cage[J]. Materials Reports, 2022, 36(17): 21030176-5.

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http://www.mater-rep.com/EN/10.11896/cldb.21030176 OR http://www.mater-rep.com/EN/Y2022/V36/I17/21030176

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