以填充材料的质量分数为影响因素，以复合材料的吸水率、硬度、压缩强度和摩擦学性能为评价指标，制备以聚己二酰己二胺（PA66）为基体、短玻璃纤维（GF）和短碳纤维（CF）为填充材料的PA66/GF/CF三元复合材料。结果表明：填充材料的质量分数对PA66复合材料的吸水率影响显著，吸水率随CF的质量分数的增大而减小，随GF的质量分数变化未呈现单一的变化趋势。硬度随GF质量分数的增加总体呈增大趋势，而随CF质量分数的增加呈现先缓慢变小后迅速增加的趋势。体系中纤维类似骨架的结构使其承载能力变大，致使压缩强度随填充材料质量分数的增大而增大。摩擦学实验表明，综合考虑吸水率、硬度和压缩强度，性能优良的PA66复合材料为GF20CF15，即GF填充质量分数为20%，CF填充质量分数为15%，PA66质量分数为65%。

PA66/GF/CF ternary composites, which were filled with short carbon fiber (CF) and short glass fiber (CF), with polyadiohexylenediamine (PA66) as the matrix, were prepared using the mass fraction of the filler as the influencing factor and the water absorption rate, hardness, compressive strength and tribological performance of the composites as the evaluation indicators. The results show that the mass fraction of fillers has a significant impact on the water absorption of PA66 composites, which decreases with the increase of CF mass fraction, and does not show a single trend with the change of GF mass fraction. The overall hardness of PA66 composites increases with the increase of GF mass fraction, while it shows a slow decrease followed by a rapid increase with the increase of CF mass fraction. The skeleton-like structure of the fibers in the system makes its load-bearing capacity larger, resulting in an increase in compressive strength with the increase of filler mass fraction. Tribological tests show that, taking the water absorption, hardness and compression strength into account, the PA66 composites with excellent performance is GF20CF15, which means that the GF filling mass fraction is 20%, the CF filling mass fraction is 15%, and the PA66 mass fraction is 65%.