GB/T 2910.11-2024 PDF English
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Textiles - Quantitative chemical analysis - Part 11: Mixtures of certain cellulose fibres with certain other fibres(method using sulfuric acid)
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| GB/T 2910.11-2009 | English | 70 |
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Textiles -- Quantitative chemical analysis -- Part 11: Mixtures of cellulose and polyester fibres (method using sulfuric acid)
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GB/T 2910.11-2024: Textiles - Quantitative chemical analysis - Part 11: Mixtures of certain cellulose fibres with certain other fibres(method using sulfuric acid)
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT2910.11-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 59.080.01
CCS W 04
Replacing GB/T 2910.11-2009
Textiles - Quantitative chemical analysis - Part 11.Mixtures
of certain cellulose fibres with certain other fibres (method
using sulfuric acid)
(ISO 1833-11.2017, MOD)
Issued on. APRIL 25, 2024
Implemented on. MAY 01, 2026
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
Introduction... 7
1 Scope... 9
2 Normative references... 9
3 Terms and definitions... 9
4 Principle... 10
5 Reagents... 10
6 Apparatus... 10
7 Test procedures... 10
8 Calculation and presentation of results... 11
9 Precision... 11
Appendix A (Informative) Identification method of polyester composite elastic fibres
... 12
Appendix B (Informative) Identification method of polyolefin elastic fibre... 14
Foreword
This document was drafted in accordance with the rules given in GB/T 1.1-2020,
Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents.
This document is Part 11 of GB/T 2910 Textiles - Quantitative chemical analysis. The
following parts have been issued for GB/T 2910.
-- Part 1.General principles of testing;
-- Part 2.Ternary fibre mixture;
-- Part 3.Mixtures of acetate and certain other fibres (method using acetone);
-- Part 4.Mixtures of certain protein fibres with certain other fibres (method
using hypochlorite);
-- Part 5.Mixtures of viscose, cupro or modal and cotton fibres (method using
sodium zincate);
-- Part 6.Mixtures of viscose or certain types of cupro or modal or lyocell and
cotton fibres (method using formic acid and zinc chloride);
-- Part 7.Mixtures of polyamide and certain other fibres (method using formic
acid);
-- Part 8.Mixtures of acetate and triacetate fibres (method using acetone);
-- Part 9.Mixtures of acetate and triacetate fibres (method using benzyl alcohol);
-- Part 10.Mixtures of triacetate or polylactide and certain other fibres (method
using dichloromethane);
-- Part 11.Mixtures of certain cellulose fibres with certain other fibres (method
using sulfuric acid);
-- Part 12.Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain
elastane fibres with certain other fibres (method using dimethylformamide);
-- Part 13.Mixtures of certain chlorofibers and certain other fibers (method
using carbon disulfide/acetone);
-- Part 14.Mixtures of acetate and certain chlorofibres (method using acetic
acid);
-- Part 15.Mixtures of jute and certain animal fibres (method by determining
nitrogen content);
-- Part 16.Mixtures of polypropylene and certain other fibres (method using
xylene);
-- Part 17.Mixtures of chlorofibers (homopolymers of vinyl chloride) and
certain other fibers (method using sulfuric acid);
-- Part 18.Mixtures of silk and wool or hair (method using sulfuric acid);
-- Part 19.Mixtures of cellulose fibres and asbestos (method by heating);
-- Part 20.Mixtures of elastane and some other fibers (method of using
dimethylacetamide);
-- Part 21.Mixtures of chlorofibers, certain modacrylics, certain elastanes,
acetates, triacetates and certain other fibers (method using cyclohexanone);
-- Part 22.Mixtures of viscose or certain types of cupro or modal or lyocell and
flax of ramie fibres (method using formic acid and zinc chloride);
-- Part 23.Mixtures of polyethylene and polypropylene (method using
cyclohexanone;
-- Part 24.Mixtures of polyester and some other fibers (method using phenol
and tetrachloroethane);
-- Part 25.Mixtures of polyester and certain other fibres (method using
trichloroacetic acid and chloroform);
-- Part 26.Mixtures of melamine and cotton or aramide fibers (method using hot
formic acid);
-- Part 101.Mixtures of soybean protein composite fibre and certain other fibers.
This document serves as a replacement of GB/T 2910.11-2009 Textiles - Quantitative
chemical analysis - Part 11.Mixtures of cellulose and polyester fibres (method using
sulfuric acid). In comparison with GB/T 2910.11-2009, apart from structural
adjustments and editorial modifications, the main technical changes are as follows.
-- Change the Scope by including polypropylene fibre, polyethylene fibre,
polyester composite elastic fibre, polyolefin elastic fibre, and
polypropylene/polyamide composite fibre (see Chapter 1; Chapter 1 of the
2009 edition);
-- Change the Test principle by specifying the use of 75% (mass fraction)
sulfuric acid (see Chapter 4; Chapter 3 of the 2009 edition);
-- Add glass stopper in Apparatus (see 6.1);
-- Add “The correction factor (d value) for the mass change of
polypropylene/polyamide composite fibres is 1.01, and of the rest is 1.00.” in
Calculation and presentation of results (see Chapter 8).
This document modifies and adopts ISO 1833-11.2017 Textiles - Quantitative chemical
analysis - Part 11.Mixtures of certain cellulose fibres with certain other fibres (method
using sulfuric acid).
The technical differences between this document and ISO 1833-11.2017, and the causes
for these differences are as follows.
-- Add polyethylene fibre to the Scope to meet the current domestic product
testing needs (see Chapter 1; Chapter 1 of ISO 1833-11.2017);
-- Use GB/T 2910.1 to replace ISO 1833-1, to facilitate the application of this
document (see Chapter 5, Chapter 6, Chapter 7; Chapter 5, Chapter 6, Chapter
7 of ISO 1833-11.2017).
This document also makes the following editorial modifications.
-- Add Appendix A (Informative) “Identification method of polyester composite
elastic fibres”;
-- Add Appendix B (Informative) “Identification method of polyolefin elastic
fibre”.
Please note that some of the contents of this document may involve patents. The issuing
organization of this document is not responsible for identifying patents.
This document was proposed by China National Textile and Apparel Council.
This document shall be under the jurisdiction of National Technical Committee 209 on
Textiles of Standardization Administration of China (SAC/TC 209).
Drafting organizations of this document. Zhejiang Zhongfangbiao Textile Inspection
Co., Ltd., Shaoxing Ketaisi Textile Inspection Co., Ltd., Suzhou Shiyuan Textile Co.,
Ltd., Chinatesta Textile Testing & Certification Services Co., Ltd., Xiamen Huaxi
Knitting Co., Ltd., Zhejiang Huzhou Weida Group Co., Ltd., Jinjiang Guangzhilin
Knitting Co., Ltd., Shenzhen Yingbo Testing Technology Co., Ltd., Lu Thai Textile Co.,
Ltd., Shenzhen Tianlin Intelligent Scientific Instrument Co., Ltd., Puyang Xinfang
Technology Co., Ltd., Zhejiang Rongda Fashion Technique Co., Ltd., Gaoyi Delida
Textile Co., Ltd., Shanghai Textile Group Testing & Standard Co., Ltd.
Main drafters of this document. Hu Kai, Lu Yanyu, Wang Jinguan, Shi Jingjing, Zhu
Yongfeng, Fan Guoqin, Feng Lijuan, Shen Yaohua, Wang Hongju, Kong Lei, Zhu
Qingfang, Yao Yujun, Yang Shengqiang, Su Tao, Liu Zhanqi, Li Youxiang.
The previous versions of this document and the documents which are replaced by this
document are as follows.
-- First published in 1982 as GB/T 2910-1982, first revised in 1997, and second
revised in 2009;
-- This is the third revision.
1 Scope
This document describes a method for the determination of cellulose fibre content in
binary mixtures of certain cellulose fibres and certain other fibres consisting of the
following fibres, after removal of non-fibrous matter, using the sulfuric acid method.
2 Normative references
The following documents are referred to in the text in such a way that some or all of
their content constitutes requirements of this document. For dated references, only the
version corresponding to that date is applicable to this document; for undated references,
the latest version (including all amendments) is applicable to this document.
GB/T 2910.1, Textiles - Quantitative chemical analysis - Part 1.General
principles of testing (GB/T 2910.1-2009, ISO 1833-1.2006, IDT)
3 Terms and definitions
No terms and definitions need to be defined in this document.
4 Principle
Use 75% (mass fraction) sulfuric acid to dissolve and remove cellulose fibres from a
mixture of known dry mass; collect the residue; wash, dry and weigh it; use the
corrected mass to calculate its percentage of the dry mass of the mixture. Obtain the
percentage of cellulose fibres from the difference.
5 Reagents
Use the reagents specified in GB/T 2910.1 as well as 5.1 and 5.2.
6 Apparatus
Use the apparatus specified in GB/T 2910.1 as well as 6.1 and 6.2.
7 Test procedures
Follow the general procedures specified in GB/T 2910.1, and then follow the steps
below.
Use cold water to wash several times continuously; use dilute ammonia solution (5.2)
to neutralize twice; then use cold water to wash. Drain the liquid first by gravity and
then by suction for each washing. Finally, dry the crucible and the residue; cool; weigh.
8 Calculation and presentation of results
The calculation and presentation of the results shall be in accordance with the
provisions of GB/T 2910.1.
The correction factor (d value) for the mass change of polypropylene/polyamide
composite fibres is 1.01, and of the rest is 1.00.
9 Precision
For a homogeneous mixture of textile materials, at the 95% confidence level, the
confidence limit of the test results of this method shall not exceed ± 1%.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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