【摘要】 以碳纤维（CF）为增强相，添加不同含量的纳米氮化硼（h-BN），通过注塑成型的方式，制备了聚醚醚酮/聚四氟乙烯（PEEK/PTFE）复合材料样条，使用力学试验机进行拉伸试验，利用摩擦试验机进行表面摩擦试验，并利用白光仪对磨痕数据和三维形貌进行观测，使用SEM对磨痕进行观测与分析。结果表明：随着h-BN含量的增加，PEEK/PTFE复合材料样条最大应力先增加后减小；当h-BN含量分别为3%、6%时，PEEK/PTFE复合材料样条的最大应力分别为174 MPa、165 MPa。与PEEK/PTFE相比，单独添加CF的样品摩擦系数降至0.23。同时添加CF、h-BN时，复合材料样条的摩擦系数均降低；h-BN含量分别为3%、6%时，复合材料样条的摩擦系数分别为0.06、0.09。随着h-BN含量的升高，PEEK/PTFE/CF/h-BN复合材料的磨损率先降低后升高。h-BN含量为3%时，复合材料样条的磨损率最低。更多还原

【Abstract】 Polyetheretherketone/polytetrafluoroethylene(PEEK/PTFE) composite spline was prepared by injection molding with carbon fiber(CF) as reinforcing phase and nano boron nitride(h-BN) with different contents. Tensile test was carried out by mechanical testing machine, surface friction test was carried out by friction testing machine, wear mark data and three-dimensional morphology were observed by a white light instrument, and wear mark was observed and analyzed by SEM. The results show that with the increase of h-BN content, the maximum spline stress of PEEK/PTFE composites first increases and then decreases; When h-BN content is 3% and 6%, the maximum stress of PEEK/PTFE composite spline is 174 MPa and 165 MPa, respectively. Compared with PEEK/PTFE, the friction coefficient of the sample with CF alone decreased to 0. 23. When CF and h-BN are added at the same time, the friction coefficient of composite spline decreases. When the content of h-BN is 3% and 6%, the friction coefficients of composite splines are 0. 06 and 0. 09, respectively. With the increase of h-BN content, the wear of PEEK/PTFE/CF/h-BN composites first decreased and then increased. When the content of h-BN is 3%, the wear rate of composite spline is the lowest.更多还原