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GB/T 38015-2019 English PDF

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GB/T 38015-2019: Textiles - Quantitative chemical analysis - Mixtures of elastane and certain other fibers
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Basic data

Standard ID GB/T 38015-2019 (GB/T38015-2019)
Description (Translated English) Textiles - Quantitative chemical analysis - Mixtures of elastane and certain other fibers
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard W04
Classification of International Standard 59.080.01
Word Count Estimation 10,162
Date of Issue 2019-08-30
Date of Implementation 2020-03-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 38015-2019: Textiles - Quantitative chemical analysis - Mixtures of elastane and certain other fibers


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Textiles - Quantitative chemical analysis - Mixtures of elastane and certain other fibers ICS 59.080.01 W04 National Standards of People's Republic of China Quantitative chemical analysis of textiles a mixture of spandex and certain other fibers Published on.2019-08-30 2020-03-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China National Textile and Apparel Council. This standard is under the jurisdiction of the National Textile Standardization Technical Committee (SAC/TC209). This standard was drafted. China Textile Standard Inspection and Certification Co., Ltd., Tianxiang (Tianjin) Quality Technology Service Co., Ltd., Zhejiang Sanding Weaving Manufacturing Co., Ltd., Fujian Fiber Inspection Bureau, China Commercial Federation, needle cotton woven commodity quality supervision and testing center (Tianjin). The main drafters of this standard. Qi Wen, Han Yuru, Xu Lu, Li Wei, Zheng Quanli, Chen Zhibo, Wang Yang, Shi Xuwang, Ding Junmin. Quantitative chemical analysis of textiles a mixture of spandex and certain other fibers

1 Scope

This standard specifies the chemical analysis method for determining the fiber content of a mixture of spandex (polyurethane elastomer) and certain other fibers. This standard applies to spandex and cellulose fibers (cotton, hemp, viscose, cuprammonium, modal, lyocell), animal fiber (silk, wool, other special animal fibers), polyamide fiber, polyvinyl alcohol fiber, polyester fiber, polypropylene fiber, polyacrylonitrile fiber, vinegar A two component mixture of ester fibers or triacetate fibers.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 2910.1 Textiles - Quantitative chemical analysis - Part 1. General rules GB/T 9994 textile material official moisture regain

3 instruments

3.1 Use GB/T 2910.1 and the instruments specified in this standard. 3.2 Erlenmeyer flask. 250 mL with glass stopper. 3.3 Constant temperature water bath. adjustable from 10 °C to 80 °C with an accuracy of ±2 °C. 3.4 Water bath oscillator. The oscillation frequency is adjustable from 50 times/min to 100 times/min. The temperature is adjustable from 10°C to 80°C with an accuracy of ±2°C. 3.5 Horizontal oscillator. The oscillation frequency is adjustable from 50 times/min to 100 times/min. 3.6 Filter. 150 mesh (0.1 mm aperture), stainless steel filter with a diameter of 10 cm and a height of 6 cm or other filters of equal effect.

4 General rules of testing

4.1 Test reagents, sample preparation and test procedures are carried out in accordance with the provisions of GB/T 2910.1 and this standard. 4.2 If it can be judged that the sample has not been pretreated and does not affect the test results, no sample pretreatment is required. 4.3 For samples where the residue after dissolution is spandex, the sample may not be cut. 4.4 For samples where the residue after dissolution is spandex, a suitable filter screen may be used instead of the glass core. 4.5 The nominal moisture regain of fiber is carried out according to GB/T 9994. 5 Mixture of spandex and cellulose fiber (cotton, hemp, viscose, cuprammonium, modal, lyocell) or acetate fiber (20% hydrochloric acid method) 5.1 Principle Dissolving the cellulose fibers or acetate fibers from a mixture of known dry mass with a 20% hydrochloric acid solution under specified conditions,

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