聚芳酯纤维的化学稳定性及其腐蚀降解

doi:10.13475/j.fzxb.20190202608

纺织学报 ›› 2019, Vol. 40 ›› Issue (12): 9-15.doi: 10.13475/j.fzxb.20190202608

聚芳酯纤维的化学稳定性及其腐蚀降解

姜兆辉¹^,²^,³, 金梦甜⁴, 郭增革¹(), 贾曌¹, 王其才¹, 金剑⁴^,⁵

1.山东理工大学鲁泰纺织服装学院, 山东淄博 255000
2.绍兴文理学院浙江省清洁染整技术研究重点实验室, 浙江绍兴 312000
3.闽江学院福建省新型功能性纺织纤维及材料重点实验室, 福建福州 350108
4.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
5.青岛大学山东省生态纺织协同创新中心, 山东青岛 266071

收稿日期:2019-02-18 修回日期:2019-09-20 出版日期:2019-12-15 发布日期:2019-12-18
通讯作者: 郭增革
作者简介:姜兆辉(1982—),男,副教授,博士。主要研究方向为功能纤维。
基金资助:
山东省高等学校科技计划项目(J17KB011);淄博市校城融合发展计划项目(2018ZBXC474);黄河三角洲研究院创新引导基金项目(2018-7);浙江省清洁染整技术研究重点实验室开放基金项目(1804);福建省新型功能性纺织纤维及材料重点实验室开放基金项目(FKLTFM1820)

Chemical stability and corrosion degradation of polyarylester fiber

JIANG Zhaohui¹^,²^,³, JIN Mengtian⁴, GUO Zengge¹(), JIA Zhao¹, WANG Qicai¹, JIN Jian⁴^,⁵

1. Lutai School of Textile and Apparel, Shandong University of Technology, Zibo, Shandong 255000, China
2. Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province, Shaoxing University, Shaoxing, Zhejiang312000, China
3. Fujian Key Laboratory of Novel Functional Textile Fibers and Materials, Minjiang University, Fuzhou, Fujian 350108, China
4. State Key Laboratory of Biobased Fiber Manufacture Technology, China Textile Academy, Beijing 100025, China
5. Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao University, Qingdao, Shandong 266071, China

Received:2019-02-18 Revised:2019-09-20 Online:2019-12-15 Published:2019-12-18
Contact: GUO Zengge

摘要/Abstract

摘要：

为研究聚芳酯纤维在高湿热、强腐蚀条件下的耐受性,选用酸、碱及强氧化剂处理聚芳酯纤维,并借助光学显微镜、扫描电子显微镜、差示扫描量热仪、傅里叶变换红外光谱仪及热失重分析仪等,研究纤维形态结构、聚集态结构及大分子链结构变化。结果表明:在常温和60 ℃下,H₂SO₄处理后纤维表面未见明显变化,HNO₃处理后纤维仅出现少量沟槽,但经KMnO₄处理后,纤维横向沟槽增多,纵向呈现微裂纹,尤其经NaOH处理后,纤维表面由沟槽变为凹坑,甚至呈腐蚀断裂状态;酸和KMnO₄并未显著破坏纤维的晶区有序结构,而NaOH处理降低了纤维晶区规整度;H₂SO₄、HNO₃和NaOH及KMnO₄处理引起聚芳酯纤维大分子链苯环上—CH键断裂,导致纤维降解,残炭率降低。

关键词: 聚芳酯纤维, 化学稳定性, 聚集态结构, 高性能纤维

Abstract:

In order to investigate the resistance of polyacrylester fiber to high damp heat and strong corrosion, the fibers were treated by strong acid, alkali and oxidant, and then the morphological structure, aggregation structure and macromolecular chain structure of the fibers were studied. The results show that the surfaces of fibers treated with H₂SO₄ show no significantly change at room temperature and 60 ℃, while only a few grooves appear in the surface of fibers treated with HNO₃. However, after treatment by KMnO₄, the transverse grooves of the fibers increase and the longitudinal microcracks appear. Especially after treatment by NaOH, the surface of the fibers changes from grooves to pits and even show a corrosion fracture state. Acid and KMnO₄ don't significantly destroy the ordered structure of the crystalline region, while NaOH solution reduces the regularity of the crystalline region. The breakage of —CH bond on the benzene ring of macromolecular chains occurs after treatment by H₂SO₄, HNO₃, NaOH and KMnO₄, and eventually leads to degradation of polyarylester fibers and reduction of residual ratio.

Key words: polyarylester fiber, chemical stability, aggregation structure, high performance fiber

中图分类号:

TQ317.2

姜兆辉, 金梦甜, 郭增革, 贾曌, 王其才, 金剑. 聚芳酯纤维的化学稳定性及其腐蚀降解[J]. 纺织学报, 2019, 40(12): 9-15.

JIANG Zhaohui, JIN Mengtian, GUO Zengge, JIA Zhao, WANG Qicai, JIN Jian. Chemical stability and corrosion degradation of polyarylester fiber[J]. Journal of Textile Research, 2019, 40(12): 9-15.

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纤维名称	断裂强力/cN	断裂强度/ (cN·dtex^-1)	断裂伸长率/%	初始模量/ (cN·tex^-1)	断裂功/ mJ
聚芳酯纤维	234.46	15.83	6.61	336.43	0.77
PPTA纤维	48.14	15.32	5.30	314.35	0.13

聚芳酯纤维的化学稳定性及其腐蚀降解

Chemical stability and corrosion degradation of polyarylester fiber

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