Study on the preparation and properties of polydopamine functionalized molybdenum disulfide polyimide composites
In this study,a polydopamine functionalized molybdenum disulfide(MoS2)composite film(MoS2/PDA/PI)was prepared by using polydopamine(PDA)coated molybdenum disulfide(MoS2)as filler.The results show that the friction coefficient and wear rate of MoS2/PDA/PI composites are 38.4％and 27.8％higher than that of pure PI.Compared with pure PI,the tensile strength of MoS2/PDA/PI composite is increased by 44.8％,the elastic modulus is increased by 25.6％and the elongation at break is increased by 55.3％.The breakdown voltage and partial discharge starting voltage of MoS2/PDA/PI composite are 22.6％and 24.1％higher than that of pure PI,respectively.The results show that filling PI with polydopamine functionalized molybdenum disulfide nanosheets provides a new way to improve the mechanical and electrical insulation properties of PI films.
万方数据
维普
