Comparative study of tribochemistry of ultrahigh molecular weight polyethylene, polyphenylene sulfide and polyetherimide in tribo- composites | |
Qi HM(齐慧敏)1,2; Zhang LG(张利刚)1; Zhang G(张嘎)1,3; Wang TM(王廷梅)1; Wang QH(王齐华)1; Zhang G(张嘎) | |
刊名 | Journal of Colloid and Interface Science |
2018 | |
卷号 | 514期号:0页码:615-624 |
关键词 | Tribochemistry Ultrahigh Molecular Weight Polyethylene Polyphenylene Sulfide Polyetherimide Tribofilm |
ISSN号 | 0021-9797 |
DOI | 10.1016/j.jcis.2017.12.078 |
英文摘要 | Hypothesis: Tribochemical reactions of polymer matrix with steel counterpart can exert an important role in tribofilm’s structure, and thereby affect the tribological performance of its composites. Experiments: In the present work, tribochemistry of ultrahigh molecular weight polyethylene (UHMWPE), polyphenylene sulfide (PPS) and polyetherimide (PEI) in tribo-composites was comparatively studied. Two kinds of formulations, i.e. conventional composites filled with carbon fibers and graphite and hybrid nanocomposites containing additional silica (SiO2) nanoparticles, were investigated. Findings: It was revealed that when rubbing with steel, molecular chains of UHMWPE were broken and free radicals finally chelated with the counterface. Whereas, PPS molecules underwent thermal decomposition, oxidation and finally ferrous sulfide (FeS) and ferric sulfate [Fe2(SO4)3] were generated. Chelating reaction of PEI was identified only for sliding of PEI-based nanocomposite. Tribochemistry of polymer molecules played an important role in tribofilm formation and tribological performance of the conventional composites. When sliding took place with the hybrid nanocomposites at low pv conditions, tribochemistry of polymer molecules played a similar role as for the conventional composites. Nonetheless, at high pv conditions, independent on the polymer matrices, robust tribofilms containing high fraction of silica were generated on the steel counterface, minimizing direct rubbing of the friction pair. |
学科主题 | 聚合物自润滑复合材料 |
资助项目 | 聚合物自润滑复合材料研究组 |
语种 | 英语 |
WOS记录号 | WOS:000424963700067 |
资助机构 | National Key Research and Development Program of China (2017YFB0310703) ; National Natural Science Foundation of China (Grant no. 51475446) ; Chinese ‘‘Thousand Youth Talents Plan” project |
内容类型 | 期刊论文 |
源URL | [http://ir.licp.ac.cn/handle/362003/22972] |
专题 | 兰州化学物理研究所_固体润滑国家重点实验室 兰州化学物理研究所_先进润滑与防护材料研究发展中心 兰州化学物理研究所_青岛研发中心/青岛市资源化学与新材料研究中心 |
通讯作者 | Zhang G(张嘎) |
作者单位 | 1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.Qingdao Center of Resource Chemistry & New Materials, Qingdao 266071, China |
推荐引用方式 GB/T 7714 | Qi HM,Zhang LG,Zhang G,et al. Comparative study of tribochemistry of ultrahigh molecular weight polyethylene, polyphenylene sulfide and polyetherimide in tribo- composites[J]. Journal of Colloid and Interface Science,2018,514(0):615-624. |
APA | Qi HM,Zhang LG,Zhang G,Wang TM,Wang QH,&Zhang G.(2018).Comparative study of tribochemistry of ultrahigh molecular weight polyethylene, polyphenylene sulfide and polyetherimide in tribo- composites.Journal of Colloid and Interface Science,514(0),615-624. |
MLA | Qi HM,et al."Comparative study of tribochemistry of ultrahigh molecular weight polyethylene, polyphenylene sulfide and polyetherimide in tribo- composites".Journal of Colloid and Interface Science 514.0(2018):615-624. |
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