Effect of molecular weight on tribological properties of thermosetting polyimide under high temperature | |
Department | 先进润滑与防护材料研究发展中心 |
Wang YM(王彦明)1,2; Wang TM(王廷梅)1; Wang QH(王齐华)1; Wang TM(王廷梅) | |
The second department | 固体润滑国家重点实验室 |
2014 | |
Source Publication | Tribology International |
ISSN | 0301-679X |
Volume | 78Pages:47-59 |
Abstract | A series of thermosetting polyimide oligomers with different calculated number-average molecular weights (Mn) were synthesized. Thermosetting polyimide (TPI) specimens were produced by a hot-pressing technique. This paper investigates the effect of the calculated number-average molecular weight (Mn) on tribological properties under high temperature. Worn surfaces and transfer films morphologies were observed using SEM to reveal the wear mechanism. Experimental results demonstrated the relationship between Mn and tribological properties. The research discussed transition temperature of wear mechanism of TPI specimens. It revealed that the transition of wear mechanism from slightly adhesive to hardly adhesive wear occurred at lower temperature, with increasing Mn. And TPI-3 prepared from polyimide oligomers (Mn=3000), presented superior performance than TPI-5, TPI-7 and homologous thermoplastic polyimide. |
Keyword | Thermosetting Polyimides Calculated Number-average Molecular Weight High Temperature Wear Mechanism |
Subject Area | 材料科学与物理化学 |
DOI | 10.1016/j.triboint.2014.04.031 |
Funding Organization | the National Science Foundation for Distinguished Young Scholars of China (Grant no. 51025517) |
Indexed By | SCI |
If | 1.936 |
Language | 英语 |
Funding Project | 聚合物自润滑复合材料组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/21334 |
Collection | 中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心 固体润滑国家重点实验室(LSL) |
Corresponding Author | Wang TM(王廷梅) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
Recommended Citation GB/T 7714 | Wang YM,Wang TM,Wang QH,et al. Effect of molecular weight on tribological properties of thermosetting polyimide under high temperature[J]. Tribology International,2014,78:47-59. |
APA | Wang YM,Wang TM,Wang QH,&王廷梅.(2014).Effect of molecular weight on tribological properties of thermosetting polyimide under high temperature.Tribology International,78,47-59. |
MLA | Wang YM,et al."Effect of molecular weight on tribological properties of thermosetting polyimide under high temperature".Tribology International 78(2014):47-59. |
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