Growth of ultra-dense MoS2 nanosheets on carbon fibers to improve the mechanical and tribological properties of polyimide composites

• DOI: 10.1007/s40544-020-0413-0
• Publication Date: 2020-11-19T08:02:55Z
• Authors: Jin Yang; Qingfeng Xiao; Zhe Lin; Yong Li; Xiaohua Jia; Haojie Song
• Keywords: Molybdenum disulfide; Thermal Stability

Abstract 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 growth molybdenum disulfide (MoS 2 ) nanosheets and improve strength with PI. Uniform dense MoS thicknesses 30–40 nm on surface PDA@CF obtained via subsequent hydrothermal method. As result, between CF PI matrix becomes more compact help PDA layer nanosheets. This is beneficial in forming PI/CF-MoS composites better thermal stability, higher tensile strength, enhanced tribological properties. The lubricating reinforcing effects hybrid CF-MoS composite are discussed detail. increases 43%, friction coefficient wear rate reduce 57% 77%, respectively, compared to those pure These values than PI/CF without results indicate that material can be used as an additive mechanical properties polymers.