高原纤化Lyocell纤维的制备及其性能  

Preparation and characterization of high fibrillation Lyocell fiber

作　　者：黄伟 程春祖 张嘉煜 张晨曦 程敏 徐纪刚 刘云崇 HUANG Wei;CHENG Chunzu;ZHANG Jiayu;ZHANG Chenxi;CHENG Min;XU Jigang;LIU Yunchong(State Key Laboratory for Bio-based Fiber Manufacturing Technology, China Textile Academy, Beijing 100025, China)

机构地区：[1]中国纺织科学研究院有限公司生物源纤维制造技术国家重点实验室,北京100025

出　　处：《纺织学报》2021年第6期41-45,共5页Journal of Textile Research

基　　金：国家重点研发计划项目(2017YFB0309502)。

摘　　要：为探究Lyocell纤维原纤化的生成条件,拓展高原纤化Lyocell纤维在过滤织物、覆盖面料及吸收衬垫等领域的应用,以次氯酸钠(NaClO)溶液为氧化剂,采用汽蒸处理方法制备了不同原纤化程度的Lyocell纤维,研究了NaClO溶液质量分数和热处理时间对Lyocell纤维结构及性能的影响。结果表明:在本文实验范围内,当NaClO溶液质量分数(有效Cl-质量分数)为1.50%、热处理时间为180 s时,Lyocell纤维表面微原纤分布均匀、原纤化程度最为明显,纤维保持了较强的吸湿能力,较未处理前升高了135.8%,其干态断裂强度为3.69 cN/dtex,断裂伸长率为11.3%,基本保持了后续应用领域要求的较高力学性能。该方案实施难度小,效率高,有利于高原纤化Lyocell纤维在水刺织物、混纺制造纺织用品等领域的应用和工业化推广。In order to explore the forming conditions for Lyocell fiber fibrillation,a sufficient theoretical basis was provided for expanding the application of high-fibrillation Lyocell fiber in filter fabrics,covering fabrics and absorbent lined pad.In this paper,sodium hypochlorite(NaClO)solution was used as oxidant and Lyocell fibers with different degrees of fibrillation were prepared by steaming treatment.The influence of NaClO solution concentration and heat treatment time on Lyocell fiber structure and properties were analyzed.The results show that within the scope of this experiment,the fibrillation degree of Lyocell fiber gradually increases and the polymerization degree gradually decreases,as the concentration of NaClO solution increases.When the concentration of NaClO solution(effective Cl-concentration)is 1.5%and the heat treatment time is 180 s,the degree of fiber fibrillation is quite obvious and uniform.The treated fibers achieve a strong moisture absorption capacity,which is 135.8%higher than before.The fiber breaking strength is 3.69 cN/dtex,elongation at break 11.3%,maintaining high mechanical properties required by the intended applications.The process is proved to be less difficult and more efficient,beneficial to the application and industrialization of high-fibrillation Lyocell fibers in the fields of spunlace fabrics and blended manufacturing textile products.

关 键 词：LYOCELL纤维 汽蒸处理 原纤化 湿磨损 保水值 

分 类 号：TS109.9[轻工技术与工程—纺织工程]