Textiles—Quantitative chemical analysis—Part 21:Mixtures of chlorofibers,certain modacrylics,certain elastanes,acetates,triacetates and certain other fibers (method using cyclohexanone)
1 Scope
This part of GB/T 2910 specifies a method, using cyclohexanone, to determine the percentage of chlorobibre, madacrylic, elastane, acetate and triacetate after removal of non-fibrous matter, in textiles made of the following mixtures of
- acetate, triacetate, chlorofibre, certain modacrylics, certain elastanes
and
- wool, animal hair, silk, cotton, cupro, modal, viscose, polyamide, acrylic and glass fibre.
Where modacrylics or elastanes are present, a preliminary test should be carried out to determine whether the fibre is completely soluble in the reagent.
It is also possible to analyse mixtures containing chlorofibres by using the test methods described in GB/T 2910.13 or GB/T 2910.17.
2 Normative References
The following normative documents contain provisions which, through reference in this Part of GB/T 2910, constitute provisions of this Part. For dated reference, subsequent amendments (excluding corrigendum content) to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this Part are encouraged to study whether the latest editions of these documents are applicable. For undated references, the latest edition of the normative document referred to applies.
Contents
Foreword I
1 Scope
2 Normative References
3 Principle
4 Reagents
5 Apparatus
6 Test Procedure
7 Calculation and Expression of Results
8 Precision
Appendix A (Informative) Hot Extraction Apparatus
Appendix NA (Informative) The Test Procedure of Using of Soxhlet Extractor
Bibliography
