棉秆皮/棉混纺纱的丝光工艺

Mercerization processing on cottonstalk bast fibers/cotton blended yarn

针对纤维素纤维制品的形态和化学性质,对棉秆皮/棉混纺纱线进行丝光处理,采用正交实验以丝光处理后纱线的钡值与纱线性能(断裂强度、断裂伸长率、失重率、回潮率、缩水率)为指标,分析纱线丝光处理的工艺条件.由直观分析方法可知,不同指标的优化工艺条件是不相同的.利用模糊正交法的实验数据处理方法得到,影响丝光后纱线性能指标的实验因素由大到小的顺序依次为NaOH质量浓度、温度、时间;丝光处理的工艺条件为NaOH质量浓度200g/L,温度20℃,时间200s.在此工艺条件下,丝光纱线的钡值为150,断裂强度为5.13cN/tex,缩水率为1.20%.

According to the morphology and chemical propety of cellulose fiber products,cottonstalk bast fibers/cotton blended yarn is mercerized under orthogonal experiment.The barium value and yarn property(breaking strength,breaking elongation,weight loss,regain and water shrinkage)of mercerized yarn regarded as evaluation index,mercerization parameters of the yarn are analyzed.Intuitive analysis shows that various indexs have different optimum parameters.Fuzzy orthogonal method shows that experiment factors of influencing mercerized yarn index are sodium hydroxide content,treating temperature,and treating time.The mercerization parameters are that sodium hydroxide content of 200g/L,treating temperature of 20℃ andtreating time of 200 s.Under the mercerization parameters,mercerized yarn has barium value of150,breaking strength of 5.13cN/tex,shrinkage of 1.20%.