基于N-甲基吗啉-N-氧化物溶剂制备聚芳砜酰胺/纤维素阻燃纤维

doi:10.13475/j.fzxb.20180701407

纺织学报 ›› 2019, Vol. 40 ›› Issue (07): 1-76.doi: 10.13475/j.fzxb.20180701407

• 纤维材料 • 下一篇

基于N-甲基吗啉-N-氧化物溶剂制备聚芳砜酰胺/纤维素阻燃纤维

程筒¹, 姚勇波², 陈忠丽¹, 靳宏¹, 吴开建¹, 王乐军³, 刘怡宁³, 张玉梅¹()

^1. 东华大学纤维材料改性国家重点实验室, 上海 201620
^2. 嘉兴学院, 浙江嘉兴 314001
^3. 恒天纤维集团有限公司, 北京 100020

收稿日期:2018-07-05 修回日期:2019-03-25 出版日期:2019-07-15 发布日期:2019-07-25
通讯作者: 张玉梅
作者简介:程筒(1994-),男,硕士生。主要研究方向为纤维素纤维的功能化。
基金资助:
国家自然科学基金项目(51773032);国家自然科学基金项目(21704034)

Preparation of flame retardant aromatic polysulfonamide/cellulose fibers with N-methylmorpholine-N-oxide monohydrate as solvent

CHENG Tong¹, YAO Yongbo², CHEN Zhongli¹, JIN Hong¹, WU Kaijian¹, WANG Lejun³, LIU Yining³, ZHANG Yumei¹()

^1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China
^2. Jiaxing University, Jiaxing, Zhejiang 314001, China
^3. Hi-Tech Fiber Group Co., Ltd., Beijing 100020, China

Received:2018-07-05 Revised:2019-03-25 Online:2019-07-15 Published:2019-07-25
Contact: ZHANG Yumei

摘要/Abstract

摘要：

为制备兼具阻燃和吸湿性能的纤维,采用N-甲基吗啉-N-氧化物(NMMO)水溶液为共溶剂,分别将纤维素(cellulose)和聚芳砜酰胺(PSA)溶解后进行共混制备纺丝液,通过干喷湿法纺丝制备PSA/cellulose共混纤维,并对纺丝液及共混纤维的结构和性能进行表征与分析。结果表明:NMMO对PSA具有良好的溶解性能,纺丝液均质、稳定,制备的共混纤维呈现出PSA富集于纤维表层的类皮-芯结构;PSA/cellulose纤维具有良好的阻燃性能、吸湿性能和力学性能,当纤维素质量分数达到30%时,共混纤维仍可达到阻燃纤维标准,其断裂强度为2.08 cN/dtex,无需后道牵伸处理就能达到较高的强度,此时PSA/cellulose纤维的回潮率提高为8%,具有良好的可染性。

关键词: 聚芳砜酰胺, 纤维素, N-甲基吗啉-N-氧化物, 阻燃纤维

Abstract:

In order to prepare fibers with flame retardant property and good hygroscopicity, N-methylmorpholine-N-oxide monohydrate (NMMO·H₂O) was used as co-solvent to dissolve aromatic polysulfonamide (PSA) and cellulose, and the PSA/cellulose blend fibers were fabricated by dry-jet wet spinning. The structure and properties of spinning solution and blended fibers were characterized and analyzed. It is found that NMMO·H₂O can dissolve PSA well, and the spinning solution is homogeneous and stable. An analogous ″sheath-core″ morphology is observed in the fibers as PSA distributed more in the sheath domain. The flame retardant property, moisture absorption ability and the mechanical property of the PSA/cellulose blended fibers are good. When the cellulose content is 30% in the blend fiber, the blend fibers still meet the requirement of flame retardant fiber standards. The tensile strength of the blend fiber is up to 2.08 cN/dtex, which shows a good tensile strength without post treatment. The moisture regain of PSA/cellulose fibers is up to 8%, and the dyeability is also improved.

Key words: aromatic polysulfonamide, cellulose, N-methylmorpholine-N-oxide monohydrate, flame retardant fiber

中图分类号:

TQ341.5

程筒, 姚勇波, 陈忠丽, 靳宏, 吴开建, 王乐军, 刘怡宁, 张玉梅. 基于N-甲基吗啉-N-氧化物溶剂制备聚芳砜酰胺/纤维素阻燃纤维[J]. 纺织学报, 2019, 40(07): 1-76.

CHENG Tong, YAO Yongbo, CHEN Zhongli, JIN Hong, WU Kaijian, WANG Lejun, LIU Yining, ZHANG Yumei. Preparation of flame retardant aromatic polysulfonamide/cellulose fibers with N-methylmorpholine-N-oxide monohydrate as solvent[J]. Journal of Textile Research, 2019, 40(07): 1-76.

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样品名称	线密度/ dtex	模量/ (cN·dtex^-1)	断裂伸长率/%	断裂强度/ (cN·dtex^-1)
PSA	4.02	17.1	56	1.14
PC9/1	3.43	39.7	43	1.52
PC8/2	4.24	44.9	23	1.55
PC7/3	2.65	71.5	14	2.08
cellulose	4.13	88.3	16	3.40

样品	LOI值/%	离火自熄时间/s	回潮率/%
PSA	30.0	<1	5.9
PC9/1	28.7	<1	7.4
PC8/2	27.6	<2	7.7
PC7/3	26.6	<5	8.0
cellulose	18.0	不自熄	10.0

基于N-甲基吗啉-N-氧化物溶剂制备聚芳砜酰胺/纤维素阻燃纤维

Preparation of flame retardant aromatic polysulfonamide/cellulose fibers with N-methylmorpholine-N-oxide monohydrate as solvent

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