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GB/T 2910.11-2009 (GB/T 2910.11-2024 Newer Version) PDF English


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GB/T 2910.11-2024English265 Add to Cart 0-9 seconds. Auto-delivery. Textiles - Quantitative chemical analysis - Part 11: Mixtures of certain cellulose fibres with certain other fibres(method using sulfuric acid) Valid
GB/T 2910.11-2009English70 Add to Cart 0-9 seconds. Auto-delivery. Textiles -- Quantitative chemical analysis -- Part 11: Mixtures of cellulose and polyester fibres (method using sulfuric acid) Valid
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GB/T 2910.11-2009: PDF in English (GBT 2910.11-2009)

GB/T 2910.11-2009 GB/T2910.11-2009 GB ICS 59.080.01 W 04 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA GB/T 2910.11-2009/ISO 1833-11. 2006 Partially replacing GB/T 2910-1997 Textiles-Quantitative Chemical Analysis – Part 11. Mixtures Of Cellulose And Polyester Fibres (Method Using Sulfuric Acid) (ISO 1833-11.2006, IDT) ISSUED ON. JUNE 15, 2009 IMPLEMENTED ON. JANUARY 1, 2010 Jointly issued by. General Administration of Quality Supervision, Inspection and Quarantine (GAQSIQ); Standardization Administration (SAC) of the People's Republic of China. Table of Contents Foreword ... 3  1 Scope ... 6  2 Normative References... 6  3 Principle ... 6  4 Reagents ... 6  5 Apparatus ... 7  6 Test Procedure ... 7  7 Calculation and Expression of Results ... 7  8 Precision ... 8  Foreword  GB/T 2910 “Textiles-Quantitative Chemical Analysis” consists of the following parts. - Part 1. General principles of testing; - Part 2. Ternary fiber mixtures; - Part 3. Mixtures of acetate and certain other fibers (method using acetone); - Part 4. Mixtures of certain protein and certain other fibers (method using hypochlorite); - Part 5. Mixtures of viscose, cupro or modal and cotton fibers (method using sodium zincate); - Part 6. Mixtures of viscose or certain types of cupro or modal or lyocell and cotton fibers (method using formic acid and zinc chloride); - Part 7. Mixtures of polyamide and certain other fibers (method using formic acid); - Part 8. Mixtures of acetate and triacetate fibers (method using acetone); - Part 9. Mixtures of acetate and triacetate fibers (method using benzyl alcohol); - Part 10. Mixtures of triacetate or polylactide and certain other fibers (method using dichloromethane); - Part 11. Mixtures of cellulose and polyester fibers (method using sulfuric acid); - Part 12. Mixtures of acrylic, certain modacrylics, certain chlorofibers, certain elastanes and certain other fibers (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 chlorofibers (method using acetic acid); - Part 15. Mixtures of jute and certain animal fibers (method by determining nitrogen content); - Part 16. Mixtures of polypropylene fibers and certain other fibers (method using xylene); - Part 17. Mixtures of chlorofibers (homopolymers of vinyl chloride) and certain other fibers (method using sulfuric acid); Textiles - Quantitative Chemical Analysis - Part 11. Mixtures of Cellulose and Polyester Fibres (Method Using Sulfuric Acid) 1    Scope  This part of GB/T 2910 specifies a method, using sulfuric acid, to determine the percentage of cellulose fibre after removal of non-fibrous matter, in textiles made of binary mixtures of natural and regenerated cellulose fibres and polyester fibre. 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 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. 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    Principle  The cellulose fibre is dissolved out from a known dry mass of the mixture, with sulfuric acid. 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 in revised way. The percentage of cellulose is found by difference. 4    Reagents  Use the reagents described in GB/T 2910.1 together with that described in 4.1 and 4.2 of this part. 4.1 Sulfuric acid, 75% (mass percentage) A suitable reagent can be prepared by adding carefully, while cooling, 700 mL of concentrated sulfuric acid (  1.84 g/mL) to 350 mL of water. After the solution has 8    Precision  On a homogeneous mixture of textile materials, the confidence limits of the results obtained by this method are not greater than ±1 for the confidence level of 95 %. ......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.