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SN/T 2841-2011: Determination for the content of modacrylic fiber blended with other fibres in import and export textiles
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SN/T 2841-2011: Determination for the content of modacrylic fiber blended with other fibres in import and export textiles

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Determination for the content of modacrylic fiber blended with other fibres in import and export textiles People's Republic of China Entry-Exit Inspection and Quarantine Standards Import and export textiles and other modified acrylic Determination of the fiber content of fiber mixtures Issued on. 2011-02-25 2011-07-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Beijing Entry-Exit Inspection and Quarantine Bureau, Ningbo Entry-Exit Inspection and Quarantine of People's Republic of China Bureau, People's Republic of China Zhejiang Exit Inspection and Quarantine. The main drafters of this standard. Tang Xiaoping, Liu Yang, Wang Qiang, Wang Xiaoqiang, Wang Jing, Yang Lisheng, Zhao Hong Shan, Miao it to, Han Jing, Zhu Linping, Yu Hao East. Import and export textiles and other modified acrylic Determination of the fiber content of fiber mixtures Warning. Use of this standard shall have a person experiences regular laboratory work. This standard does not point out all possible security asked question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

This standard specifies the textiles polyacrylonitrile fiber (polymerization of acrylonitrile and vinylidene chloride) qualitative and quantitative analysis. This standard applies to textiles polyacrylonitrile fiber (polymerization of acrylonitrile and vinylidene chloride) and polyester, acetate, polypropylene, chlorine-containing fibers, Polyamide, the content of acrylic, cotton, linen, rayon, silk and wool fiber analysis.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 2910.1 Textiles - Quantitative chemical analysis - Part 1. General principles of testing

3 Qualitative Identification

3.1 Principle Having different chemical, dyeing and physical properties depending on the textile fibers, using different analytical methods for analysis, thereby identifying Polyacrylonitrile fiber. 3.2 Reagents The standard fiber qualitative identification of the reagents, generally analytically pure or chemically pure. Preparation of the test solution in accordance with relevant provisions of the manual carried out. 3.3 Sampling The representative sampling of all product response should include the composition of the fabric yarns and fibers of various components, the number of samples should be sufficient for testing Required. 3.4 pretreatment of the sample When attached on the sample finishing agents, coatings, dyes and other substances may obscure characteristics of the fiber, the accuracy of the discrimination result of the interference, should be used Appropriate reagents and methods (such as. washed or extracted samples trichloroethane, ethyl ether, ethanol, etc.) will be removed, but not damage the fiber or fibers The nature of any change. The fibers are then dried, to prepare for the test. 3.5 Test Each sample test sample in duplicate, and if the test results are quite different, should be re-tested. ...