Tribological Properties of Polyimide Coatings Filled with PTFE and Surface-Modified Nano-Si3N4

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	Tribological Properties of Polyimide Coatings Filled with PTFE and Surface-Modified Nano-Si3N4
	Su, Fenghua 1,2; Zhang, Shaohua 1
刊名	Journal of Applied Polymer Science
	2014
卷号	131 期号:12 页码:40410(1-11)
关键词	coatings composites friction wear and lubrication nanoparticles nanowires and nanocrystals polyimides
ISSN号	0021-8995
通讯作者	Su, Fenghua
英文摘要	Polyimide (PI) coatings filled with PTFE and nano-Si₃N₄ were prepared by a spraying technique and successive curing. Nano-Si₃N₄ particles were modified by grafting 3-aminopropyltriethoxysilane to improve their dispersion in the as-prepared coatings. Friction and wear performances and wear mechanisms of the coatings were evaluated. The results show that the incorporations of PTFE and modified nano-Si₃N₄ particles greatly improve the friction reduction and wear resistance of PI coating. The friction and wear performance of the composite coating is significantly affected by the filler mass fraction and sliding conditions. PI coating incorporated with 20 wt % PTFE and 5 wt % modified nano-Si₃N₄ displays the best tribological properties. Its wear rate is more than one order of magnitude lower and its friction coefficient is over two times smaller than that of the unfilled PI coating. Differences in the friction and wear behaviors of the hybrid coatings as a function of filler or sliding condition are attributed to the filler dispersion, the characteristic of transfer film formed on the counterpart ball and the wear mechanism of the coating under different sliding conditions.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the National Natural Science Foundation of China (Grants 51275176);Pearl River Science and Technology Star (2012J2200068);Findamental Research Funds for the Central Universities (Grant 2014ZG0014)
语种	英语
WOS记录号	WOS:000333614300065
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/18791]
专题	兰州化学物理研究所_固体润滑国家重点实验室
作者单位	1.S China Univ Technol, Sch Mech & Automot Engn, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Su, Fenghua,Zhang, Shaohua. Tribological Properties of Polyimide Coatings Filled with PTFE and Surface-Modified Nano-Si3N4[J]. Journal of Applied Polymer Science,2014,131(12):40410(1-11).
APA	Su, Fenghua,&Zhang, Shaohua.(2014).Tribological Properties of Polyimide Coatings Filled with PTFE and Surface-Modified Nano-Si3N4.Journal of Applied Polymer Science,131(12),40410(1-11).
MLA	Su, Fenghua,et al."Tribological Properties of Polyimide Coatings Filled with PTFE and Surface-Modified Nano-Si3N4".Journal of Applied Polymer Science 131.12(2014):40410(1-11).