塑料科技2025，Vol.53Issue(10)：30-33,4.DOI:10.15925/j.cnki.issn1005-3360.2025.10.006
PI、CNTs填充PTFE摩擦磨损性能的分子动力学分析
Molecular Dynamics Analysis of Friction and Wear Properties of PI and CNTs Filled PTFE
摘要
Abstract
Tribological properties of polytetrafluoroethylene(PTFE)composites filled with polyimide(PI)with different mass fractions and carbon nanotubes(CNTs)with a mass fraction of 5%were studied by molecular dynamics(MD)simulation.Firstly,amorphous models of PTFE,5%CNTs/PTFE and 5%CNTs/PI with different mass fractions/PTFE composites(PI mass fractions were 5%,10%,15%,20%and 25%),and the friction pair model of composites and iron was constructed,and the tribological properties of the composites were calculated by restriction shear.The simulation results showed that when the CNTs with a mass fraction of 5%were filled,the friction coefficient and wear rate of the composites decreased compared with PTFE,and on this basis,when the PI was filled with a 10%mass fraction,the friction coefficient of the composites decreased by 6.7%and the wear rate decreased by 11.6%.By analyzing the friction interface temperature,the relative concentration of atoms along the thickness direction,and the radial distribution function at the interface,the influence mechanism of PI and CNTs on PTFE materials was revealed from the atomic perspective.关键词
聚四氟乙烯/聚酰亚胺/碳纳米管/分子动力学/摩擦学性能Key words
PTFE/PI/CNTs/Molecular dynamics/Tribological properties分类
化学化工引用本文复制引用
王帅,葛正浩,王超宝,张晓亮,王浩宇..PI、CNTs填充PTFE摩擦磨损性能的分子动力学分析[J].塑料科技,2025,53(10):30-33,4.基金项目
陕西省自然科学基金面上项目(2023-JC-YB-346) （2023-JC-YB-346）
秦创原引用高层次创新创业人才项目(QCYRCXM-2023-105) （QCYRCXM-2023-105）
