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GB/T 2910.12-2023 English PDF (GBT2910.12-2023)

GB/T 2910.12-2023 English PDF (GBT2910.12-2023)

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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)
This document describes a method using dimethylformamide to determine the content of acrylic, modacrylics, chlorofibres or elastane fibres in the following bicomponent mixtures, after removing non-fibrous matter: - acrylic, certain modacrylics, certain chlorofibres, certain elastane fibres; and - wool, other animal hair fibres, mulberry silk, cotton, viscose fibres, cupro fibres, modal fibres, lyocell fibres, polyamide fibres, polyester fibres, polypropylene fibres, elastiomultiester fibres, elastolefin fibres, melamine fibres, polypropylene/ polyamide bicomponent fibres, polyacrylate fibres and glass fibres. This document does not apply to textiles containing wool, other animal hair fibres and mulberry silk dyed with chromium based mordant dyes. NOTE 1: ISO 16373-1 gives the dyestuff identification method. NOTE 2: This method will cause great damage to some polyester fibres with a sheath-core structure (low melting point polyester/polyester bicomponent fibres) in the filled flakes. Observe the state of the remaining fibres after dissolution to confirm whether this method is applicable.

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