The relationship between the twist factor or the blended ratio and the strength of the yarn was analyzed.And then the optimized blen ded ratio and the critical twist factor was determined.

• 探讨了纯纺纱捻系数、混纺纱的混比与纱线强度之间的关系,确定了大豆蛋白纤维与棉混纺时的最佳组分比及大豆纯纺纱的临界捻系数。