Polysulfone and meta-aramid fibers were blended to spin yarns on domestic equipment. The results show that blending ratio has some effect on yarn evenness. Polysulfone and meta-aramid blended yarn evenness gets better with the increasing polysulfone blending ratio. It results from the decrease of additional unevenness caused by the difference of the fibers friction property. Fiber linear density unevenness and the number of fibers have little effect on yarn evenness. When polysulfone and Meta-aramid blended yarn breaks, slippage occurs considerably, while yarn breaking strength and breaking elongation change slightly. The number of fibers in the section of the blended yarn varies with blending ratio. Yarn hairiness decreases when polysulfone blending ratio increases. Borda method was used to analyze the blended yarn quality. It shows that when the polysulfone ratio is 80 percent, the blended yarn quality is the best.%在国产设备上纺制不同比例的芳砜纶/芳纶1313混纺纱,成纱性能测试结果表明:混纺比例对混纺纱条干有一定影响,随着芳砜纶纤维含量的增加,芳砜纶/芳纶1313混纺纱的条干得到改善,这种改善主要归因于2种纤维摩擦性能差异导致的附加不匀减小,由于混纺比改变造成的纤维数量变化和纤维直径不匀变化对纱条随机不匀的影响不明显；芳砜纶/芳纶1313混纺纱的断裂以断裂滑脱为主,混纺比例对成纱断裂强度和断裂伸长率的影响不显著；混纺比例影响成纱截面内的平均纤维根数,成纱毛羽随着细度较大的芳砜纶纤维含量的增加而减少.采用加权Borda数法进行模糊决策分析,在一定条件下,混纺质量分数之比为80/20的芳砜纶/芳纶1313混纺纱成纱质量最优.
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