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GB/T 2910.18-2009 PDF in English


GB/T 2910.18-2009 (GB/T2910.18-2009, GBT 2910.18-2009, GBT2910.18-2009)
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GB/T 2910.18-2009English70 Add to Cart 0-9 seconds. Auto-delivery. Textiles -- Quantitative chemical analysis -- Part 18: Mixtures of silk and wool or hair (method using sulfuric acid) Valid
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GB/T 2910.18-2009: PDF in English (GBT 2910.18-2009)

GB/T 2910.18-2009 Textiles.Quantitative chemical analysis.Part 18. Mixtures of silk and wool or hair (method using sulfuric acid) ICS 59.008.01 W04 National Standards of People's Republic of China GB/T 2910.18-2009/ISO 1833-18..2006 Partially replaced GB/T 2910-1997 Quantitative chemical analysis of textiles Part 18. Silk and wool or other animal hair Fiber mixture (sulfuric acid method) (ISO 1833-18..2006, IDT) Released in.2009-06-15 2010--01-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Published by China National Standardization Administration Foreword GB/T 2910 "Quantitative Chemical Analysis of Textiles" includes the following parts. --- Part 1. General rules for testing; --- Part 2. Three-component fiber mixture; --- Part 3. Mixture of acetate fiber and some other fibers (acetone method); --- Part 4. a mixture of certain protein fibers and certain other fibers (hypochlorite method); --- Part 5. Viscose fiber, some copper ammonia fiber or modal fiber and cotton mixture (sodium zinc method); --- Part 6. Viscose fiber, some copper ammonia fiber, modal fiber or lyocell fiber and cotton mixture Zinc method); --- Part 7. Mixture of polyamide fiber and some other fibers (formic acid method); --- Part 8. Mixture of acetate fiber and triacetate fiber (acetone method); --- Part 9. mixture of acetate fiber and triacetate fiber (benzyl alcohol method); --- Part 10. Triacetate fiber or a mixture of polylactic acid fiber and some other fibers (dichloromethane method); --- Part 11. mixture of cellulose fibers and polyester fibers (sulfuric acid method); --- Part 12. Polyacrylonitrile fibers, some modified polyacrylonitrile fibers, some chlorine-containing fibers or some elastic fibers and some other Mixture of fibers (dimethylformamide method); --- Part 13. a mixture of certain chlorine-containing fibers and certain other fibers (carbon disulfide/acetone method); --- Part 14. mixture of acetate fiber and some chlorine-containing fibers (glacial acetic acid method); --- Part 15. Mixture of jute and some animal hair fibers (nitrogen content method); --- Part 16. Mixture of polypropylene fiber and some other fibers (xylene method); --- Part 17. Blends of chlorinated fibers (vinyl chloride homopolymer) with certain other fibers (sulfuric acid method); --- Part 18. mixture of silk and wool or other animal hair fibers (sulfuric acid method); --- Part 19. Mixture of cellulose fiber and asbestos (heating method); --- Part 20. Mixtures of polyurethane elastic fibers and certain other fibers (dimethylacetamide method); --- Part 21. Chlorinated fibers, some modified polyacrylonitrile fibers, some elastic fibers, acetate fibers, triacetate fibers and some other Mixture of other fibers (cyclohexanone method); --- Part 22. Viscose fiber, some copper ammonia fiber, modal fiber or lyocell fiber and flax, ramie mixture (formic acid / Zinc chloride method); --- Part 23. mixture of polyethylene fibers and polypropylene fibers (cyclohexanone method); --- Part 24. Mixtures of polyester fibers with certain other fibers (phenol/tetrachloroethane method); --- Part 101. a mixture of soy protein composite fiber and some other fibers. This part is the 18th part of GB/T 2910. GB/T 2910-1997 is replaced by the following standards. GB/T 29.10.1, GB/T 29.10.3, GB/T 29110, GB/T 29110, GB/T 29110, GB/T 29110.8, GB/T 29110, GB/T 2910.10, GB/T 2910.11, GB/T 29110.12, GB/T 2910.13, GB/T 2910.14, GB/T 2910.15, GB/T 2910.16, GB/T 2910.17, GB/T 29110.18, GB/T 2910.19 and GB/T 2910.22. This part is equivalent to ISO 18333.18..2006 "Quantitative chemical analysis of textiles. Part 18. Silk and wool or other animals Wool fiber mixture (sulfuric acid method). Compared with ISO 1833.18..2006, this section has the following editorial changes. --- In the normative reference documents, Chinese standards have replaced international standards; GB/T 2910.18-2009/ISO 1833-18..2006 --- Removed the foreword of international standards. This section replaces Chapter 19 of GB/T 2910-1997 "Quantitative chemical analysis method for textile two-component fiber blended products". Compared with Chapter 19 of GB/T 2910-1997, this section has no technical differences. This section is proposed by China Textile Industry Association. This section is under the jurisdiction of the Basic Standards Branch of the National Technical Committee for Textile Standardization (SAC/TC209/SC1). This section is mainly drafted by. National Textile Products Quality Supervision and Testing Center, Shenzhen Testing Center of China Academy of Textile Sciences. The main drafters of this section. Wang Ying, Li Chun, Wang Qian, An Li. The previous releases of GB/T 2910 are. --- GB/T 2910-1982; --- GB/T 2910-1997. GB/T 2910.18-2009/ISO 1833-18..2006 Quantitative chemical analysis of textiles Part 18. Silk and wool or other animal hair Fiber mixture (sulfuric acid method) 1 Scope This part of GB/T 2910 specifies the determination of silk and wool or other animal hair fibers after the removal of non-fibrous substances by the sulfuric acid method. Method of fiber content in a two-component mixture. 2 Normative references The clauses in the following documents become the clauses of this section through the reference in this part of GB/T 2910. All quotes with date Documents, all subsequent amendments (excluding errata) or revisions are not applicable to this section, however, it is encouraged to achieve The parties to the agreement investigate whether the latest versions of these documents are available. For undated references, the latest edition applies to this document. section. GB/T 29.10.1 Quantitative chemical analysis of textiles-Part 1. General rules for testing (GB/T 29.10.1-2009, ISO 1833-1. 2006, IDT) 3 Principle Use 75% (mass fraction) sulfuric acid reagent to dissolve and remove the silk from the mixture of known dry quality, collect the residue, wash and dry And weigh; calculate its dry mass fraction with the corrected mass. The quality of wool is worth the difference. Note. Wild silk, such as wild tussah silk, is not completely dissolved in 75% (mass fraction) sulfuric acid. 4 reagents Use GB/T 29.10.1 and the reagents specified in 4.1, 4.2 and 4.3 of this section. 4.1 75% (mass fraction) sulfuric acid solution Under cooling conditions, 700 mL of concentrated sulfuric acid (density ρ = 1.84 g/mL) was slowly added to 350 mL of water. Allow the solution to cool To room temperature, dilute to 1L with water. The concentration of sulfuric acid solution should be in the range of 73% to 77% (mass fraction). 4.2 Dilute sulfuric acid solution 100 mL of concentrated sulfuric acid (density 1.84 g/mL) was slowly added to 1,900 mL of water. 4.3 Dilute ammonia solution 200mL of ammonia water (density of 0.880g/mL) was diluted to 1L with water. 5 Equipment Use the equipment specified in GB/T 299.1 and this section 5.1. 5.1 Erlenmeyer flask with stopper, the capacity is not less than.200mL. 6 Test steps In accordance with the general procedures specified in GB/T 299.1. Then follow the steps below. Put the sample in the Erlenmeyer flask, add 100mL sulfuric acid solution (4.1) per gram of the sample, cover the stopper, and shake the Erlenmeyer flask (most GB/T 2910.18-2009/ISO 1833-18..2006 Good mechanical vibration), place 30min at room temperature; After shaking the flask again, place it at room temperature for 30 minutes. Last oscillation. Filter the residue in the Erlenmeyer flask with a filter crucible of known dry quality. Then use a small amount of sulfuric acid solution (4.1) Rinse the residue in the Erlenmeyer flask. Use a suction filtration device to aspirate the drainage liquid, and then use 50mL of dilute sulfuric acid solution (4.2), 50mL of water, and 50mL of dilute ammonia solution (4.3) in this order. Wash the residue in the filter crucible. Before each suction and drainage of the suction filter, ensure that the residue is in full contact with the liquid for at least 10 min. Each cleaning must first be drained by gravity, and then sucked and drained with a suction filtration device. Then rinse with water to ensure that the residue is in full contact with water for about 30 minutes, and then use a suction filter to suck and drain the liquid. Dry and filter the crucible and residue, cool, and weigh. 7 Results calculation and representation The calculation and presentation of the results are in accordance with GB/T 290.1. 8 Precision For a homogeneous textile material mixture, the confidence limit of this method does not exceed ± 1 at a 95% confidence level. GB/T 2910.18-2009/ISO 1833-18..2006 ......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.