GB/T 2910.9-2024 English PDF (GBT2910.9-2024)

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GB/T 2910.9-2024: Textiles -- Quantitative chemical analysis -- Part 9: Mixtures of acetate with certain other fibres (method using benzyl alcohol)
GB/T 2910.9-2024
GB
NATIONAL STANDARD OF THE
PEOPLE'S REPUBLIC OF CHINA
ICS 59.080.01
CCS W 04
Replacing GB/T 2910.9-2009
Textiles - Quantitative chemical analysis - Part 9.Mixtures of
acetate with certain other fibres (method using benzyl alcohol)
(ISO 1833-9.2019, MOD)
ISSUED ON. MARCH 15, 2024
IMPLEMENTED ON. OCTOBER 1, 2024
Issued by. State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword... 3
Introduction... 7
1 Scope... 9
2 Normative references... 9
3 Terms and definitions... 9
4 Principle... 9
5 Reagents... 10
6 Equipment... 10
7 Test steps... 10
8 Result calculation and presentation... 11
9 Precision... 11
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents.
This document is Part 9 of GB/T 2910 Textiles - Quantitative chemical analysis. GB/T
2910 has been published in 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 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 with certain other 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);
Textiles - Quantitative chemical analysis - Part 9.Mixtures of
acetate with certain other fibres (method using benzyl alcohol)
1 Scope
This document describes the determination of the acetate content of a mixture of the
following fibres after the removal of non-fibrous matter using the benzyl alcohol
method.
-- acetate fiber, and
-- triacetate fiber, polypropylene fiber, polyolefin elastic fiber, melamine fiber,
polypropylene/polyamide composite fiber and polyacrylate fiber.
2 Normative references
The provisions of the following documents constitute the essential clauses of this
document through normative references in this text. Among them, for referenced
documents with dates, only the versions corresponding to the dates are applicable to
this document; for referenced documents without dates, the latest versions (including
all amendments) are 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
There are no terms or definitions that require definition in this document.
4 Principle
The benzyl alcohol reagent is used to dissolve and remove acetate fiber from a mixture
of known dry mass. The residue is collected, washed, dried and weighed. The corrected
mass is used to calculate its percentage in the dry mass of the mixture and the mass
fraction of acetate is obtained from the difference.