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GB/T 45512-2025Textiles — Quantitative chemical analysis — Mixtures of polybenzimidazole fiber with certain other fibers (English PDF)

纺织品定量化学分析聚苯并咪唑纤维与某些其他纤维的混合物

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

April 25, 2025

Implementation date

November 1, 2025

Scope

GB/T 45512-2025 is the English-translated version of 纺织品定量化学分析聚苯并咪唑纤维与某些其他纤维的混合物.

GB/T 45512-2025 is the Chinese standard "Textiles — Quantitative chemical analysis — Mixtures of polybenzimidazole fiber with certain other fibers".

Its scope clause reads: This document describes the chemical analysis method for the determination of fiber content in a two-component mixture of polybenzimidazole fibers after removal of non-fiber matter.

Quantitative method.

This document applies to polybenzimidazole fibers and certain protein fibers (sheep wool, mulberry silk, etc.), regenerated cellulose fibers (Lyocell fibers Fibers such as viscose, polyester, polyamide, and polyvinyl alcohol Fibers such as polyacrylonitrile, certain modified polyacrylonitrile, polyurethane elastic fibers, acetate, triacetate, polylactic acid and certain A two-component mixture of some meta-aromatic polyamide fibers.

Note. Appendix A gives the test method for identification of meta-aromatic polyamide fibers, para-aromatic polyamide fibers and polybenzimidazole fibers. Its clauses include terms and definitions.

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Document preview — GB/T 45512-2025

National Standard of the People's Republic of China

ICS: 59.080.01
Classification: W 04

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references

1 Scope

This document describes the chemical analysis method for the determination of fiber content in a two-component mixture of polybenzimidazole fibers after removal of non-fiber matter.

Quantitative method.

This document applies to polybenzimidazole fibers and certain protein fibers (sheep wool, mulberry silk, etc.), regenerated cellulose fibers (Lyocell fibers

Fibers such as viscose, polyester, polyamide, and polyvinyl alcohol

Fibers such as polyacrylonitrile, certain modified polyacrylonitrile, polyurethane elastic fibers, acetate, triacetate, polylactic acid and certain

A two-component mixture of some meta-aromatic polyamide fibers.

Note. Appendix A gives the test method for identification of meta-aromatic polyamide fibers, para-aromatic polyamide fibers and polybenzimidazole fibers.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document.

GB/T 2910.1 Quantitative chemical analysis of textiles Part 1.General principles of testing

GB/T 2910.4 Quantitative chemical analysis of textiles Part 4.Mixtures of certain protein fibres and certain other fibres (secondary

Chlorate method)

GB/T 2910.6 Quantitative chemical analysis of textiles Part 6.Viscose, certain cupro-ammonia, modal or lyocell fibers

Mixture of cellulose and cotton (formic acid/zinc chloride method)

GB/T 2910.10 Quantitative chemical analysis of textiles Part 10.Triacetate or polylactic acid fibers and certain other fibers

A mixture of (dichloromethane method)

GB/T 2910.11 Quantitative chemical analysis of textiles Part 11.Mixtures of certain cellulosic fibres and certain other fibres (Sulfuric acid method)

GB/T 2910.12 Quantitative chemical analysis of textiles Part 12.Polyacrylonitrile fibers, certain modified polyacrylonitrile fibers, certain

Mixtures of some chlorine-containing fibers or some polyurethane elastic fibers with some other fibers (dimethylformamide method)

GB/T 2910.14 Quantitative chemical analysis of textiles Part 14.Mixtures of acetate and certain chlorinated fibres (acetyl acetate)

Acid method)

GB/T 2910.24 Quantitative chemical analysis of textiles Part 24.Mixtures of polyester and certain other fibers (phenol/

Tetrachloroethane method)

GB/T 2910.25 Quantitative chemical analysis of textiles Part 25.Mixtures of polyester and certain other fibers (Trichloroethylene

Acid/chloroform method)

GB/T 38015-2019 Quantitative chemical analysis of textiles - mixtures of spandex and certain other fibers

3 Terms and definitions

There are no terms or definitions that require definition in this document. […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 45512

Edition	Title	Revision	Status
GB/T 45512-2025	Textiles - Quantitative chemical analysis - Mixtures of polybenzimidazol fiber with certain other fibers	current edition	Current

This page sells the current edition, GB/T 45512-2025. Earlier editions are listed for reference only.

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