Enhanced tribological properties of polyimide composite with carbon fiber/graphitic-carbon nitride nanosheets

被引:6
作者
Chen, Beibei [1 ,2 ,3 ,4 ]
Yang, Bi [2 ]
Tong, Yang [2 ]
Dong, Wenquan [2 ]
Li, Jiaye [2 ]
Qiu, Shu [2 ]
机构
[1] Chongqing Univ Technol, Key Lab Adv Manufacture Technol Automobile Parts, Minist Educ, Chongqing, Peoples R China
[2] Jiangsu Univ, Inst Adv Mat, Sch Mat Sci & Engn, Zhenjiang, Peoples R China
[3] Henan Univ Sci & Technol, Natl United Engn Lab Adv Bearing Tribol, Luoyang, Peoples R China
[4] Chongqing Univ Technol, Key Lab Adv Manufacture Technol Automobile Parts, Minist Educ, Chongqing 400054, Peoples R China
基金
中国国家自然科学基金;
关键词
carbon fiber; g-C3N4; nanosheets; microstructure; polyimide; self-lubrication; GRAPHENE OXIDE; FIBER; WEAR; NANOPARTICLES; RESISTANCE;
D O I
10.1002/app.54360
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Developing polymer self-lubricating composites is of great significance for reducing mechanical friction and wear. In this study, a hybrid of graphitic carbon nitride (g-C3N4) nanosheets anchored carbon fiber (CF) was constructed through one-step calcination method to enhance the tribological performance of polyimide (PI). The presence of g-C3N4 improved the interfacial interaction of CF/PI composite by endowing CF surface with active sites and rough microstructure. Tribological test results demonstrated that CF/g-C3N4/PI composite had outstanding antifriction and wear resistance, with friction coefficient and wear rate of 0.209 and 2.23 x 10(-7) mm(3)/Nm, which were reduced by 21% and 73.52% compared to pure PI, respectively. This was mainly attributed to the enhanced interfacial interaction, which was conducive to the stress transferring from PI to CF/g-C3N4 in sliding process. At the same time, the g-C3N4 nanosheets could give the composite excellent self-lubrication property by promoting the formation of transfer film. More importantly, the as-proposed CF/g-C3N4/PI composite still maintained good self-lubricating performance in different sliding environment, with a friction coefficient of 0.132 in water environment and 0.049 in oil environment, suggesting it had a broad prospect in polymer self-lubricating composite. In addition, the corresponding mechanism was discussed based on the analysis of worn surface of the composite and counterpart.
引用
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页数:11
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