GB/T 40912-2021 Translated English of Chinese Standard. (GBT40912-2021): Textiles -- Quantitative chemical analysis -- Mixtures of polyesteramide with certain other fibers [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]https://www.chinesestandard.net, 2020. 6. 6. - 17페이지 This Document describes a method for the determination of the content of polyesteramide fibers and certain other fibers in a two-component mixture of polyesteramide fibers and other fibers after removal of non-fibrous substances by the dissolution method. This Document applies to polyesteramide and cellulose fibers (cotton, flax, ramie, hemp, viscose fiber, modal fiber, lyocell fiber, etc.), protein fibers (sheep wool, cashmere, mulberry silk, etc.), polyamide fiber, polyacrylonitrile fibers, some modacrylic fibers, some chlorinecontaining fibers or two-component mixture of some elastic fibers and polyester fibers. |
목차
| 3 | |
Scope | 4 |
Reagents and Materials | 5 |
Apparatus | 6 |
Mixtures of Polyesteramide fibers and Protein Fibers Sheep Wool Cashmere Mulberry silk etc | 7 |
Mixture of Polyesteramide Fibers and Polyacrylonitrile Fibers Some Modacrylic Fibers Some ChlorineContaining Fibers or Some Elastic Fibers | 8 |
Precision | 9 |
Appendix A Informative Identification Method of Polyesteramide Fiber | 10 |
Appendix B Normative Quantitative Analysis Method for Mixture of Polyesteramide Fibers and Polyester Fibers Nitrogen Content Method | 14 |
Bibliography | 17 |
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absorption peak acid solution 5.1 acid solution mass ammonia Calculation and expression conical flask constant temperature water conventional moisture regain cooled and weighed Differential scanning calorimetry Document drain the liquid drained by gravity expressed according expression of result fibers and polyester Figure A.1 flask to fully flask with stopper formic acid solution Fujian glacial acetic acid glass sand core glass stopper gram of specimen hydrochloric acid hypochlorite solution 5.3 known dry mass Lyocell melting point Mixture of Polyesteramide Modacrylic mol/L N,N-dimethylformamide nitrogen polyacrylonitrile Polyamide polyester fibers polyesteramide fiber prepared specimen procedures specified provisions of GB/T Put the prepared reagents result is calculated sand core crucible Shenzhen sodium hydroxide sodium hypochlorite solution specified in GB/T Standard Substances stopper 6.2 suction and drain sulfuric acid solution Table B.1 temperature water bath Test procedures Follow Textile vacuum suction value of polyesteramide wash the residue water bath oscillator water to 1L Zhejiang