The effect of blending ratio on the performance of hollow coffee carbon polyester/cotton blended compact siro-spun yarn was investigated. Five blend ratios of hollow coffee carbon polyester/cotton fiber (i.e. 20/80, 35/65, 50/50, 65/35, and 80/20) and polyester/cotton fiber 35/65 were designed, and six groups of 14.6 tex yarn were spun by compact siro. Indices for the performance of the yarn (surface morphology, evenness, hairiness, tensile property, and hydroscopicity) were tested and analyzed. The regression analysis showed the excellent linear relationship between the content of hollow coffee carbon polyester and each performance index was obtained. Cubic curve models were built to comprehensively evaluate the performance of the yarn. The blending effect in these yarns was evaluated using the Hamilton transfer index. The tests results show that with the increase of the content of hollow coffee carbon polyester in the blended yarn, the evenness and tensile properties of the hollow coffee carbon polyester/cotton blended yarn continue to increase, whereas the hairiness index and moisture regain of the yarn gradually decrease. With the change of blending ratio, the transfer index of each fiber in hollow coffee carbon polyester/cotton blended yarn will change. When the content of hollow coffee carbon polyester is more than or equal to 50%, it has the tendency to preferentially distribute inward, whereas the cotton fiber has the tendency to preferentially distribute outward. When the content of hollow coffee carbon polyester is less than 50%, the reverse is true. The comprehensive evaluation value of the yarn performance decreased first and then increased with the increase in the content of hollow coffee carbon polyester.

研究了混纺比对空心咖啡碳涤棉混纺紧密赛络纱性能的影响。设计了5种中空咖啡碳涤棉纤维（即20/80、35/65、50/50、65/35、80/20）和涤棉纤维35/65的混纺比例，设计了六组14.6 tex 纱线由紧密赛络纺。对纱线性能指标（表面形态、均匀度、毛羽、拉伸性能和吸湿性）进行了测试和分析。回归分析表明，中空咖啡碳聚酯的含量与各项性能指标之间存在极好的线性关系。建立三次曲线模型来综合评估纱线的性能。使用汉密尔顿传递指数评估这些纱线的混纺效果。试验结果表明，随着混纺纱中空心咖啡碳涤纶含量的增加，中空咖啡碳涤/棉混纺纱的条干和拉伸性能不断提高，而纱线的毛羽指数和回潮率则不断提高。逐渐减少。随着混纺比的变化，中空咖啡碳涤棉混纺纱中各纤维的转移指数会发生变化。当中空咖啡碳聚酯含量大于等于50%时，有优先向内分布的趋势，而棉纤维则有优先向外分布的趋势。当中空咖啡碳聚酯含量小于50%时，则相反。