The strength and elongation performance of pure cotton high count yarn is more sensitive to changes in raw material properties,and the changes in length direction are more gradual.Therefore,when using the methods specified in the current standards,there may be unstable results caused by insufficient sampling,resulting in misjudgment of product performance.This paper proposes a large capacity continuous sampling testing method.In addition to measuring the breaking force,coefficient of variation(CV)of breaking force,percentage of breaking elongation and CV of percentage of breaking elongation of the sample,evaluation indicators such as strength and elongation performance histogram,strength and elongation scatter plot,and breaking strength spectrum are also added to supplement and improve the current method.Experiments have shown that this method not only effectively improves the accuracy and reliability of traditional methods,but also provides a more comprehensive evaluation of strength and elongation performance from the perspective of the distribution characteristics of strength and elongation performance in the yarn length direction,which can provide effective guidance for production practice.
关键词
高支纱/强伸性能/测试方法/性能分析
Key words
high count yarn/strength and elongation performance/testing methods/performance analysis
维普
万方数据