GB/T 2910.12-2023 Textiles—Quantitative chemical analysis—Part 12: Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain elastane fibres with certain other fibres (method using dimethylformamide) (English Version)
Textiles—Quantitative chemical analysis—Part 12: Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain elastane fibres with certain other fibres (method using dimethylformamide)
GB/T 2910.12-2023 Textiles - Quantitative chemical analysis -Part 12 : Mixtures of acrylic, certain Modacrylics, certain chlorofibres, certain elastane fibres with certain other fibres (method using dimethylformamide)
1 Scope
This document specifies a method, using dimethylformamide, to determine the mass percentage of acrylic, modacrylic, chlorofibre or elastane, after removal of non-fibrous matter, in textiles made of mixtures of
- acrylic, certain modacrylics, certain chlorofibres, certain elastane fibres with
- wool, other animal hair, silk, cotton, viscose, cupro, modal, lyocell, polyamide, polyester, polypropylene, elastomultiester, elastolefin, melamine, polypropylene/polyamide bicomponent, polyacrylate and glass fibres.
It is not applicable to wool, other animal hair and silk dyed with chromium based mordant dyes.
Note 1: Dyestuff identification is described in ISO 16373‑1.
Note 2: This method has great damage to some polyester fibers (low melting point polyester/polyester composite fibers) with sheath-core structure in the filling batt. Observe the state of the remaining fibers after dissolution to confirm whether this method is applicable.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
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 are listed in this document.
4 Principle
The acrylic, modacrylic, chlorofibre or elastane is dissolved out from a known dry mass of the mixture, with dimethylformamide at 90 °C to 95 °C. The residue is collected, washed, dried and weighed. Its mass, corrected if necessary, is expressed as a percentage of the dry mass of the mixture, and the percentage of acrylic, modacrylic, chlorofibre or elastane is found by the difference.
Where certain modacrylic fibres, certain chlorofibres or certain elastane fibres are present, a preliminary test shall be carried out to determine whether the fibre is completely soluble in the reagent.
It is also possible to analyse mixtures containing certain elastane fibres by using the test methods described in GB/T 2910.20 or GB/T 2910.21, depending on the solubility of elastane and on the other fibres present.
Foreword I
Introduction V
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Test procedure
8 Calculation and expression of results
9 Precision
Bibliography
GB/T 2910.12-2023 Textiles—Quantitative chemical analysis—Part 12: Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain elastane fibres with certain other fibres (method using dimethylformamide) (English Version)
Standard No.
GB/T 2910.12-2023
Status
valid
Language
English
File Format
PDF
Word Count
5500 words
Price(USD)
165.0
Implemented on
2024-3-1
Delivery
via email in 1 business day
Detail of GB/T 2910.12-2023
Standard No.
GB/T 2910.12-2023
English Name
Textiles—Quantitative chemical analysis—Part 12: Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain elastane fibres with certain other fibres (method using dimethylformamide)
GB/T 2910.12-2023 Textiles - Quantitative chemical analysis -Part 12 : Mixtures of acrylic, certain Modacrylics, certain chlorofibres, certain elastane fibres with certain other fibres (method using dimethylformamide)
1 Scope
This document specifies a method, using dimethylformamide, to determine the mass percentage of acrylic, modacrylic, chlorofibre or elastane, after removal of non-fibrous matter, in textiles made of mixtures of
- acrylic, certain modacrylics, certain chlorofibres, certain elastane fibres with
- wool, other animal hair, silk, cotton, viscose, cupro, modal, lyocell, polyamide, polyester, polypropylene, elastomultiester, elastolefin, melamine, polypropylene/polyamide bicomponent, polyacrylate and glass fibres.
It is not applicable to wool, other animal hair and silk dyed with chromium based mordant dyes.
Note 1: Dyestuff identification is described in ISO 16373‑1.
Note 2: This method has great damage to some polyester fibers (low melting point polyester/polyester composite fibers) with sheath-core structure in the filling batt. Observe the state of the remaining fibers after dissolution to confirm whether this method is applicable.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
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 are listed in this document.
4 Principle
The acrylic, modacrylic, chlorofibre or elastane is dissolved out from a known dry mass of the mixture, with dimethylformamide at 90 °C to 95 °C. The residue is collected, washed, dried and weighed. Its mass, corrected if necessary, is expressed as a percentage of the dry mass of the mixture, and the percentage of acrylic, modacrylic, chlorofibre or elastane is found by the difference.
Where certain modacrylic fibres, certain chlorofibres or certain elastane fibres are present, a preliminary test shall be carried out to determine whether the fibre is completely soluble in the reagent.
It is also possible to analyse mixtures containing certain elastane fibres by using the test methods described in GB/T 2910.20 or GB/T 2910.21, depending on the solubility of elastane and on the other fibres present.
Contents of GB/T 2910.12-2023
Foreword I
Introduction V
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Test procedure
8 Calculation and expression of results
9 Precision
Bibliography
