摘要
To enhance the interface bonding of polyimide(PI)/carbon fiber(CF)composites,CFs were functionalized by introducing a polydopamine(PDA)transition layer,whose active groups provide absorption sites for the growth of molybdenum disulfide(MoS_(2))nanosheets and improve the bonding strength with PI.Uniform and dense MoS_(2) nanosheets with thicknesses of 30–40 nm on the surface of the PDA@CF were obtained via a subsequent hydrothermal method.As a result,the interface between the CF and the PI matrix becomes more compact with the help of the PDA transition layer and MoS_(2) nanosheets.This is beneficial in forming PI/CF–MoS_(2) composites with better thermal stability,higher tensile strength,and enhanced tribological properties.The lubricating and reinforcing effects of the hybrid CF–MoS_(2) in the PI composite are discussed in detail.The tensile strength of the PI/CF–MoS_(2) composite increases by 43%,and the friction coefficient and the wear rate reduce by 57%and 77%,respectively,compared to those of the pure PI.These values are higher than those of the PI/CF composites without MoS_(2) nanosheets.These results indicate that the CF–MoS_(2) hybrid material can be used as an additive to improve the mechanical and tribological properties of polymers.
出处
《Friction》
SCIE
EI
CAS
CSCD
2021年第5期1150-1162,共13页
摩擦（英文版）
基金
This work is supported by the National Natural Science Foundation of China(51875330 and 51975342)
the National Science Foundation of Shaanxi Province(2018JZ5003 and 2019JZ‐24).
作者简介
Jin YANG.He is currently an associate professor at Shaanxi University of Science and Technology.He received his B.S.degree from Liaocheng University in 2007 and a Ph.D.degree from Lanzhou Institute of Chemical Physics in 2012.His current research interests include the development of carbon‐based materials for lubrication and designing materials with special surface wettability;Qingfeng XIAO.He is currently a master degree candidate at Shaanxi University of Science&Technology.He received his B.S.degree in 2018 from Xiʹan Aeronautical University,Xiʹan,China.His current research interests are focused on improving the tribological properties of polymer composites with CFs and studying the corresponding mechanisms;Zhe LIN.He received his B.S.degree in 2018 from Xiʹan Aeronautical University,Xiʹan,China.He is a master student in the Institute of Material Friction and Green Protection,Shaanxi University of Science&Technology.His research interests include CF reinforced polymer composite and their tribological performances;Yong LI.He received his B.S.degree in chemical engineering and technology from Henan University of Science and Technology in 2013 and Ph.D.degree in 2018 in materials science from Lanzhou Institute of Chemical Physics,University of Chinese Academy of Sciences.Now he is a lecturer in Shaanxi University of Science&Technology and his current research is focused on self‐repairing materials with wear resistance and lubricity and multifunctional surfaces with special wettability;Corresponding authors:Xiaohua JIA.She is currently a professor at Shaanxi University of Science&Technology.She received her M.S.degree from Henan Normal University in 2006 and Ph.D.degree from Northwestern Polytechnical University in 2011.Her current research is focused on the carbon‐based functional materials and chemical sensors.E-mail:jiaxiaohua@sust.edu.cn;Corresponding authors:Haojie SONG.He is currently a professor at Shaanxi University of Science&Technology.He received his B.S.degree from Henan Normal University in 2003 and Ph.D.degree from Lanzhou Institute of Chemical Physics in 2008.Now,he is interested in the development of the tribological properties of carbon matrix composites.E-mail:songhaojie@sust.edu.cn.
