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GB/T 41671-2022: Man-made fibers - Determination of solvent residues content
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Man-made fibers - Determination of solvent residues content
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GB/T 41671-2022
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Basic data | Standard ID | GB/T 41671-2022 (GB/T41671-2022) | | Description (Translated English) | Man-made fibers - Determination of solvent residues content | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | W50 | | Word Count Estimation | 31,339 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 41671-2022: Man-made fibers - Determination of solvent residues content---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Man-made fibers - Determination of solvent residues content
ICS 59.060.20
CCS W50
National Standards of People's Republic of China
Determination of solvent residues in chemical fibers
Published on 2022-07-11
2023-02-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
directory
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 General Requirements 1
5 Gas chromatography-mass spectrometry (GC-MS) 2
5.1 Principle 2
5.2 Reagents and materials 2
5.3 Instruments and equipment 2
5.4 Test Step 2
5.5 Result calculation 3
5.6 Detection limit, quantification limit 3
5.7 Precision 3
6 High performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) 4
6.1 Principle 4
6.2 Reagents and materials 4
6.3 Instruments and equipment 4
6.4 Test Step 4
6.5 Result calculation 5
6.6 Detection limit, quantification limit 5
6.7 Precision5
7 Spectrophotometry 6
7.1 Principle 6
7.2 Reagents and materials 6
7.3 Instruments and equipment 6
7.4 Test Step 6
7.5 Result calculation 7
7.6 Notes 7
8 Titration 7
8.1 Complexometric titration 7
8.2 Acid-base titration 9
9 Test report 10
Appendix A (Informative) Names of 7 Organic Solvents 11
Appendix B (normative) Determination of decalin residues in ultra-high molecular weight polyethylene fibers --- Headspace gas chromatography 12
Appendix C (normative) Determination of solvent residues in wet spinning ultra-high molecular weight polyethylene fibers 15
Appendix D (informative) Correspondence between various types of fibers, solvents and test methods 17
Appendix E (Informative) GC-MS Detection Parameter Conditions 18
Appendix F (informative) GC-MS analysis of organic solvent standard substance ion chromatogram 19
Appendix G (Informative) Statistical Results of Precision Test by GC-MS Method 20
Appendix H (Informative) Example LC-MS/MS Detection Parameters 21
Appendix I (Informative) LC-MS/MS Analysis of Organic Solvent Standard Material Gas Chromatogram 23
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
drafted.
Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents.
This document is proposed by China National Textile and Apparel Council.
This document is under the jurisdiction of the National Chemical Fiber Standardization Technical Committee (SAC/TC586).
This document is drafted by. Shanghai Textile Industry Technical Supervision Institute, Shanghai Textile Group Testing Standards Co., Ltd., Nantong Fiber Inspection
Institute, Sinopec Yizheng Chemical Fiber Co., Ltd., Anhui Provincial Institute of Product Quality Supervision and Inspection, Huafeng Chemical Co., Ltd., Huafeng Heavy
Qing Spandex Co., Ltd., China Chemical Fiber Industry Association, Jiangsu Liujia Technology Co., Ltd., Sinopec Shanghai Petrochemical Co., Ltd.
Company, Baoding Swan New Fiber Manufacturing Co., Ltd., Jiangsu Aoshen New Materials Co., Ltd., Shenma Industrial Co., Ltd., Xinfengming Collection
Group Co., Ltd., Yantai Taihe New Materials Co., Ltd., Sinopec Group Chongqing Chuanwei Chemical Co., Ltd., Anhui Wanwei High-tech Co., Ltd.
Materials Co., Ltd., Zhejiang Tongkun New Materials Research Institute Co., Ltd., Hangzhou Banglian Spandex Co., Ltd., Zhejiang Millennium Long Fiber Special
Fiber Co., Ltd., Lianyungang Fiber Inspection Center, Shanghai Chemical Industry Research Institute Co., Ltd.
The main drafters of this document. Li Hongjie, Xu Yiqun, Zhang Lingjuan, Chen Jianmei, Ding Zhenhua, Liu Lingling, Zhao Xiaoyang, Liu Shanshan, Li Deli, Wang Xinpeng,
Bai Yanhua, Yan Lina, Wang Shihua, He Xinyu, Yu Xipan, Zhu Xiaona, Hu Yun, Wu Lin, Gan Shenghua, Cheng Lingping, Chen Hong, Qiu Xingxiang, Xu Haixia,
Guo Shujie and Zhang Hua.
Determination of solvent residues in chemical fibers
1 Scope
This document describes the determination of the residues of 7 kinds of organic solvents (see Appendix A) and 2 kinds of inorganic solvents (sodium thiocyanate, concentrated sulfuric acid) in chemical fibers
try method.
This document applies to some solution spinning chemical fibers, including spandex, acrylic, polyimide, meta-aramid, polyvinyl alcohol, super
High molecular weight polyethylene fiber, lyocell fiber, polyacrylonitrile-based carbon fiber precursor, para-aramid. Other solution-spun chemical fibers can be found in
according to use.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document.
GB/T 4146 (all parts) Textile chemical fibers
GB/T 6682 Analysis Laboratory Water Specifications and Experimental Methods
JJG178-2007 Verification Regulations for Ultraviolet, Visible and Near Infrared Spectrophotometers
3 Terms and Definitions
The terms and definitions defined in GB/T 4146 (all parts) and the following terms and definitions apply to this document.
3.1
solution spinning solutionspinning
A method of spinning a fiber-forming polymer by dissolving it into a concentrated solution of a certain concentration.
Note. According to the different coagulation methods, it is divided into dry spinning and wet spinning.
3.2
The mass of organic and inorganic compound solvents used in the spinning production process but not completely removed per unit mass of fibers.
4 General requirements
Gas chromatography-mass spectrometry (GC-MS) for N,N-dimethylacetamide (DMAC), N,N-dimethylformamide (DMF), N-methylacetamide
Determination of residual amounts of pyrrolidone (NMP), dimethyl sulfoxide (DMSO), decalin and tetrahydronaphthalene. Determination of decalin residues can also be used
by headspace gas chromatography. Headspace gas chromatography is carried out in accordance with the provisions of Appendix B.
High performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) for organic solvent N-methylmorpholine-N-oxide (NMMO) and its fractions
Determination of residual amount of hydrolyzed products N-methylmorpholine (NMM), N-nitrosomorpholine (NNM) and morpholine (MOR).
Spectrophotometry is suitable for the determination of residues of dimethylformamide (DMF), dimethylacetamide (DMAC) and dimethyl sulfoxide (DMSO).
Determination. The determination of the residual amount of N-methylpyrrolidone (NMP) can be used by reference.
N,N-dimethylacetamide (DMAC), N,N-dimethylformamide (DMF), N-methylpyrrolidone (NMP), dimethyl sulfoxide
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