过氧乙酸对亚麻短纤维预处理工艺研究

Study on the pretreatment technique of short flax fiber with peracetic acid

文章研究过氧乙酸对亚麻短纤维预处理的工艺特点,分析预处理过程中过氧乙酸质量浓度、温度、时间以及p H值对失重率和分裂度的影响。结果表明:过氧乙酸有效地去除了果胶、木质素等伴生物,降低了短纤维的刚性,提高了分裂度,综合成纱性能得以提升,预处理效果良好。亚麻短纤维采用过氧乙酸预处理,既可以达到酸洗的目的,又兼有漂白作用。最佳工艺参数为:过氧乙酸质量浓度6 g/L、温度60℃、时间60 min,pH值6。预处理后亚麻短纤维的手感柔软,失重率为11.5%,分裂度达到917 Nm,可纺性改善,满足后续工序的加工要求。

The paper studies the pretreatment process features of short flax fiber with peracetic acid,analyzes the factors that affecting weight loss and disintegration degree such as concentration of peracetic acid,temperature,time and pH value of liquid during the pre-processing.The results show that peracetic acid effectively remove the pectin,lignin,and other related analogues.The rigidity of fiber is decreased and the disintegration degree is increased.The comprehensive forming-yarn performance is promoted.The effect of pretreatment is good.The pretreatment of short flax fiber with the use of peroxide acetic acid can reach the purpose of pickling,and it also has the effect of bleaching.The optimum technological parameters： concentration of peracetic acid to 6 g/L,the temperature to 60 ℃,the time to 60 min,the pH value of liquid to 6.After pretreating,the short flax fibers have a soft hand,weight loss to 11.5% and disintegration degree to 917 Nm,the spinnability is improved.and the fiber can meet the requirements of the later processing.