GB/T 2910.2-2009Textiles -- Quantitative chemical analysis -- Part 2: Ternary fibre mixture (English PDF)

Foreword

GB/T 2910 Textiles - Quantitative chemical analysis consists of the following

parts:

- 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 and certain other fibers (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 cellulose and polyester fibres (method using sulfuric

acid);

- Part 12: Mixtures of acrylic, certain modacrylic, certain chlorofibres,

certain elastanes and 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 101: Mixtures of soybean protein composite fibre and certain other

fibers.

This Part is the 2nd part of GB/T 2910.

GB/T 2910-1997 is replaced by the following standards: GB/T 2910.1, GB/T

2910.3, GB/T 2910.4, GB/T 2910.6, GB/T 2910.7, GB/T 2910.8, GB/T 2910.9,

GB/T 2910.10, GB/T 2910.11, GB/T 2910.12, GB/T 2910.13, GB/T 2910.14,

GB/T 2910.15, GB/T 2910.16, GB/T 2910.17, GB/T 2910.18, GB/T 2910.19

and GB/T 2910.22.

This Part identically uses ISO 1833-2:2007 Textiles - Quantitative chemical

analysis - Part 2: Ternary fibre mixtures. Compared with ISO 1833-2:2006,

this Part made the following editorial modifications:

- used Chinese standards to replace the International standards in

normative references;

- deleted the foreword of ISO 1833-2:2007.

This Part replaces GB/T 2911-1997 Textiles--Ternary fibre

mixtures--Quantitative analysis. Compared with Clause 7 of GB/T 2911-1997,

the differences in this Part are as follows:

- added the Introduction;

- deleted Clauses 4, 5, 6 of GB/T 2911-1997;

- added "Calculation of the analysis by manual separation" (8.4);

- added "Method of analysis by a combination of manual separation and

chemical means" (Clause 9);

- modified the annex of GB/T 2911-1997 to Annex A and Annex B of this

Standard.

Annex A and Annex B of this Part are informative.

This Part was proposed by China Textile Industry Association.

This Part shall be under the jurisdiction of Sub-committee on Basic Standards

of National Technical Committee on Textile of Standardization Administration

of China (SAC/TC 209/SC 1).

Main drafting organizations of this Part: Shanghai Wool Textile Science and

Technology Research Institute, Textile Industry Standardization Institute.

Main drafters of this Part: Zhu Jie, Shen Meihua, Yan Yanping, Zhu Qingfang,

Zhou Xiaodong.

Versions of standard substituted by GB/T 2911 are:

- GB/T 2910-1982;

- GB/T 2910-1997.

Textiles - Quantitative chemical analysis –

Part 2: Ternary fibre mixture

1 Scope

This Part of GB/T 2910 specifies methods of quantitative chemical analysis of

various ternary mixtures of fibres.

The field of application of each method for analysing binary mixtures,

specified in the parts of GB/T 2910, indicates the fibres to which the method is

applicable.

2 Normative references

The following standards contain the provisions which, through reference in

this part of GB/T 2910, constitute the provisions of this Part. For dated

references, subsequent amendments (excluding corrections) or revisions do

not apply to this Part. However, the parties who enter into agreement based

on this Part are encouraged to investigate whether the latest versions of

these documents are applicable. For undated reference documents, the latest

versions apply to this Part.

GB/T 2910.1, Textiles - Quantitative chemical analysis - Part 1: General

principles of testing (ISO 1833-1:2006, IDT)

3 Principle

After identification of the components of a mixture, the non-fibrous matter is

removed by a suitable pre-treatment, and then one or more of the four

variants of the process of selective solution described in the Introduction is

applied.

Except where this presents technical difficulties, it is preferable to dissolve the

major fibre component so as to obtain the minor fibre component as the final

residue.

4 Reagents and apparatus

Use the apparatus and reagents described in GB/T 2910.1-2009.

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