GB/T 37629-2019 English PDF (GB/T37629-2019)

GB/T 37629-2019: Textiles - Quantitative chemical analysis - Mixtures of acrylic with certain other fibres (method using formic acid and zinc chloride)
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GB/T 37629-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 59.080.01
W 04
Textiles – Quantitative Chemical Analysis – Mixtures
of Acrylic with Certain Other Fibers (Method Using
Formic Acid and Zinc Chloride)
ISSUED ON: JUNE 04, 2019
IMPLEMENTED ON: JANUARY 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Principles ... 4
4 Reagents ... 5
5 Equipment ... 5
6 Test Procedures ... 5
7 Calculation and Expression of Results ... 6
8 Precision ... 6
9 Test Report ... 6
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard was proposed by China National Textile and Apparel Council.
This Standard shall be under the jurisdiction of National Technical Committee for
Standardization of Textiles (SAC/TC 209).
Drafting organizations of this Standard: Chinatesta Textile Testing and Certification
Services Co., Ltd.; Henan Province Feather and Down Product Quality Supervision
and Inspection Center; Anhui Red Love Industrial Co., Ltd.; Fujian Changgeng New
Materials Co., Ltd.; Changle Yongyi Knitting and Textile Co., Ltd.; and Harbin Institute of
Product Quality Supervision and Inspection.
Chief drafting staffs of this Standard: Yan Chunhong, Ren Tingting, Si Ying, Wang
Xiaopeng, Li Na, lu Jinzhong, Xia Aizhen, Chen Zhenxing, Liao Changgeng, Fu Dongju,
Mao Lijun, Yuan Yingjie, Meng Xiaodong, and Huang Zhiping.
Textiles – Quantitative Chemical Analysis – Mixtures
of Acrylic with Certain Other Fibers (Method Using
Formic Acid and Zinc Chloride)
WARNING: Personnel using this Standard shall have hands-on working
experience in formal laboratory. This Standard does not address all possible
safety issues; the users are responsible for taking appropriate safety and health
measures and ensuing compliance with the relevant national regulations.
1 Scope
This Standard specifies the method for determining the fiber content in the mixtures of
polyacrylonitrile fiber with certain other fibers after removing the non-fibrous materials
by the formic acid/zinc chloride method.
This Standard is applicable to the binary mixtures of polyacrylonitrile fiber with wool,
other animal fur fibers, cotton, linen, ramie and polyester fibers.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 2910.1 Textiles - Quantitative Chemical Analysis - Part 1: General Principles
of Testing
3 Principles
Use the formic acid/zinc chloride solution to dissolve and remove the
polyacrylonitrile fiber from the mixture with known dry mass; collect the residue; clean,
dry, and weigh it; calculate the percentage of the corrected mass accounting for the
dry mass of the mixtures. Then calculate the mass percentage of the
polyacrylonitrile fiber from the difference.
GB/T 37629-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 59.080.01
W 04
Textiles – Quantitative Chemical Analysis – Mixtures
of Acrylic with Certain Other Fibers (Method Using
Formic Acid and Zinc Chloride)
ISSUED ON: JUNE 04, 2019
IMPLEMENTED ON: JANUARY 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Principles ... 4
4 Reagents ... 5
5 Equipment ... 5
6 Test Procedures ... 5
7 Calculation and Expression of Results ... 6
8 Precision ... 6
9 Test Report ... 6
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard was proposed by China National Textile and Apparel Council.
This Standard shall be under the jurisdiction of National Technical Committee for
Standardization of Textiles (SAC/TC 209).
Drafting organizations of this Standard: Chinatesta Textile Testing and Certification
Services Co., Ltd.; Henan Province Feather and Down Product Quality Supervision
and Inspection Center; Anhui Red Love Industrial Co., Ltd.; Fujian Changgeng New
Materials Co., Ltd.; Changle Yongyi Knitting and Textile Co., Ltd.; and Harbin Institute of
Product Quality Supervision and Inspection.
Chief drafting staffs of this Standard: Yan Chunhong, Ren Tingting, Si Ying, Wang
Xiaopeng, Li Na, lu Jinzhong, Xia Aizhen, Chen Zhenxing, Liao Changgeng, Fu Dongju,
Mao Lijun, Yuan Yingjie, Meng Xiaodong, and Huang Zhiping.
Textiles – Quantitative Chemical Analysis – Mixtures
of Acrylic with Certain Other Fibers (Method Using
Formic Acid and Zinc Chloride)
WARNING: Personnel using this Standard shall have hands-on working
experience in formal laboratory. This Standard does not address all possible
safety issues; the users are responsible for taking appropriate safety and health
measures and ensuing compliance with the relevant national regulations.
1 Scope
This Standard specifies the method for determining the fiber content in the mixtures of
polyacrylonitrile fiber with certain other fibers after removing the non-fibrous materials
by the formic acid/zinc chloride method.
This Standard is applicable to the binary mixtures of polyacrylonitrile fiber with wool,
other animal fur fibers, cotton, linen, ramie and polyester fibers.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 2910.1 Textiles - Quantitative Chemical Analysis - Part 1: General Principles
of Testing
3 Principles
Use the formic acid/zinc chloride solution to dissolve and remove the
polyacrylonitrile fiber from the mixture with known dry mass; collect the residue; clean,
dry, and weigh it; calculate the percentage of the corrected mass accounting for the
dry mass of the mixtures. Then calculate the mass percentage of the
polyacrylonitrile fiber from the difference.