Advanced Textile Technology ›› 2022, Vol. 30 ›› Issue (2): 63-67.DOI: 10.19398/j.att.202103015

• Testing and Analysi • Previous Articles     Next Articles

A quantitative analysis of cotton/polyester/spandex composite fabricthrough hydrochloric acid-sulfuric acid process

ZHANG Hongkang, ZHANG Yunjuan, ZHOU Zhaoyi   

  1. Shanghai Institute of Quality Inspection and Technical Research, Shanghai 200040, China
  • Received:2021-03-10 Online:2022-03-10 Published:2021-08-04

盐酸-硫酸法定量分析棉/聚酯纤维/氨纶混纺织物的研究

张弘康, 张芸娟, 周兆懿   

  1. 上海市质量监督检验技术研究院,上海 200040
  • 作者简介:张弘康(1991-),男,上海人,助理工程师,本科,主要从事纺织品检测方面的研究。

Abstract:

In order to optimize the method of quantitative analysis of cotton/polyester fiber/spandex blend fabric, a hydrochloric acid-sulfuric acid process was designed according to newly issued national standard Textiles-Quantitative Chemical Analysis-Mixtures of Elastane and Some Other Fibers (GB/T 38015—2019): 20% HCl was used to dissolve cotton at 70℃ for 30 min, and then 75% H2SO4 was adopted to dissolve spandex at 50 ℃ for 1 h. Next, the mass fraction of each component was obtained according to the mass loss, thus the quantitative analysis of cotton/polyester fiber/spandex blend fabric was completed. In this paper, 10 different specifications of cotton/polyester fiber/spandex blend fabric were quantitatively analyzed through hydrochloric acid-sulfuric acid process, and then compared with the traditional split-75% H2SO4 method and DMF-75% H2SO4 method. The results revealed that the quality correction coefficient of polyester fiber in 20% HCl (70 ℃, 30 min)was 1.00, and the newly designed hydrochloric acid-sulfuric acid process was proved to be feasible, with the advantages of easy operation and accurate data.

Key words: cotton, polyester fiber, spandex, blend fabric, quantitative analysis

摘要:

为了优化定量分析棉/聚酯纤维/氨纶混纺织物的方法,根据新发布的国标GB/T 38015-2019《纺织品定量化学分析氨纶与某些其他纤维的混合物》设计了盐酸-硫酸法:采用20% HCl在70 ℃,30 min条件下溶解棉,然后用75% H2SO4在50 ℃,1 h条件下溶解氨纶,根据质量损失,求得各组分的质量分数,完成棉/聚酯纤维/氨纶混纺织物的定量分析。采用盐酸-硫酸法对10块不同规格的棉/聚酯纤维/氨纶混纺织物进行定量分析,并与传统的拆分-75% H2SO4法及DMF-75% H2SO4法进行分析比较。结果表明:20% HCl(70 ℃,30 min)中聚酯纤维的质量修正系数为1.00,新设计的盐酸-硫酸法切实可行,并具有操作方便、数据准确等优点。

关键词: 棉, 聚酯纤维, 氨纶, 混纺织物, 定量分析

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