DIN EN ISO 1833-20-2011 Textiles - Quantitative chemical analysis - Part 20 Mixtures of elastane and certain other fibres (method using dimethylacetamide) (ISO 1833-20 2009) German.pdf

1、January 2011 Translation by DIN-Sprachendienst.English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS

2、 59.060.20!$lE“1739634www.din.deDDIN EN ISO 1833-20Textiles Quantitative chemical analysis Part 20: Mixtures of elastane and certain other fibres (method usingdimethylacetamide) (ISO 1833-20:2009)English translation of DIN EN ISO 1833-20:2011-01Textilien Quantitative chemische Analysen Teil 20: Misc

3、hungen aus Elastanfasern und bestimmten anderen Fasern(Dimethylacetamid-Verfahren) (ISO 1833-20:2009)Englische bersetzung von DIN EN ISO 1833-20:2011-01Textiles Analyse chimique quantitative Partie 20: Mlanges dlasthanne et de certaines autres fibres (mthode ladimthylactamide) (ISO 1833-20:2009)Trad

4、uction anglaise de DIN EN ISO 1833-20:2011-01www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1102.11 DIN EN ISO 1833-20:2011-01 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical C

5、ommittee ISO/TC 38 “Textiles” in collaboration with Technical Committee CEN/TC 248 “Textile and textile products” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Commit

6、tee NA 062-05-12 AA Textilchemische Prfver-fahren und Fasertrennung. The Introduction of ISO 1833-1 is summarized below as a help to users of this standard: In general, the methods described in the various parts of ISO 1833 are based on the selective solution of an individual component. Once a compo

7、nent is dissolved from a test specimen, the insoluble residue is weighed and the percentage of the soluble component(s) is calculated from loss in mass. ISO 1833-1 gives information that is common to all of these analytical methods for all fibre mixtures, regardless of their composition. This genera

8、l information should be used when applying the other parts of the ISO 1833 series; each of these parts contains a more detailed description of a method that is applicable for a specific fibre mixture. If one of these methods is based on a principle other than selective solution, this is expressly st

9、ated and described in detail in the respective part of the standards series. Fibre mixtures used during processing and, to a lesser extent, in finished textiles may contain fats, waxes or dressings which either occur naturally or are added to facilitate processing. Fibre mixtures may also contain sa

10、lts and other water-soluble matter. Some or all of these substances can separate during analysis and be erroneously calculated as soluble fibre components. To avoid this error, non-fibrous matter should be removed before analysis. A method of pre-treatment for removing oils, fats, waxes and water-so

11、luble matter is given in ISO 1833-1:2006, Annex A. In addition, textiles may contain resins or other matter added to bind the fibres or to confer special properties, such as water repellence or crease resistance. Such matter, including dyestuffs in exceptional cases, may interfere with the action of

12、 the reagent on the soluble components and/or may be partially or completely removed by the reagents. This type of added matter can thus also cause errors and should be removed before the sample is analysed. If it is impossible to remove such added matter, the methods are no longer applicable. Dye i

13、n dyed fibre is considered to be an integral part of the fibre and is not removed. Most textile fibres contain water, the amount of which depends on the type of fibre and the relative humidity of the ambient air. These analyses are conducted on the basis of dry mass, and a procedure for determining

14、the dry mass of analytical samples and residues is given in ISO 1833-1. The result is thus obtained on the basis of the dry mass of the dry fibres only. 2 DIN EN ISO 1833-20:2011-01 Provisions have been made for recalculating results on the basis of a) permissible deviations agreed upon for moisture

15、 content1)b) permissible deviations agreed upon for humidity, as well as for 1) the fibrous matter separated during pre-treatment, and 2) non-fibrous matter (e.g. dressings, processing oils or sizing assistants) which can be considered as being a commonly used commercial article that is part of the

16、fibre. In some methods, the insoluble components of a mixture may be partially dissolved in the reagent used to dissolve the soluble component(s). Whenever possible, reagents have been chosen that have little or no effect on the insoluble fibres. If a loss in mass is known to occur during the analys

17、is, the result should be corrected; correction factors are given for this purpose. These factors have been determined in several laboratories by treating, with the appropriate reagent as specified in the method of analysis, fibres cleaned by pre-treatment. These correction factors apply only to unde

18、graded fibres. If the fibres have been degraded during processing, different correction factors may be necessary. The methods described in this series apply for single determinations; at least two determinations should be made on separate samples, further determinations can be made where desired. Be

19、fore the analyses are carried out, all fibres in the mixture should be identified. For the purposes of confirmation, it is recommended that alternative methods be used in which the component that would have made up the residue when using the standard method is dissolved first, unless this is not tec

20、hnically possible. Where practically possible, the components of a mixture are to be manually separated if the method described in ISO 1833-1:2006, Annex B is to be primarily used instead of the chemical analytical methods described in the other parts of ISO 1833. The DIN Standard corresponding to t

21、he International Standard referred to in this document is as follows: ISO 1833-1 DIN EN ISO 1833-1 1) Commonly used conditioning values shall be used for each fibre, where these are available. 3 DIN EN ISO 1833-20:2011-01 National Annex NA (informative) Bibliography DIN EN ISO 1833-1, Textiles Quant

22、itative chemical analysis Part 1: General principles of testing 4 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1833-20 October 2010 ICS 59.060.01 English Version Textiles - Quantitative chemical analysis - Part 20: Mixtures of elastane and certain other fibres (method using dimethylaceta

23、mide) (ISO 1833-20:2009) Textiles - Analyse chimique quantitative - Partie 20: Mlanges dlasthanne et de certaines autres fibres (mthode la dimthylactamide) (ISO 1833-20:2009) Textilien - Quantitative chemische Analysen - Teil 20: Mischungen aus Elasthanfasern und bestimmten anderen Fasern (Dimethyla

24、cetamid-Verfahren) (ISO 1833-20:2009)This European Standard was approved by CEN on 12 September 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. U

25、p-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

26、under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germ

27、any, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG

28、 Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1833-20:2010: EDIN EN ISO 1833-20:2011-01 EN ISO 1833-20:2010 (E) 2Contents Page Foreword .3 1 Scope.5 2 Normative refer

29、ences.5 3 Principle 5 4 Reagents .5 5 Apparatus5 6 Test Procedure .6 7 Calculation and expression of results .6 8 Precision .6 Bibliography7 EN ISO 1833 consists of the following parts, under the general title Textiles Quantitative chemical analysis: Part 1: General principles of testing Part 2: Ter

30、nary fibre mixtures Part 3: Mixtures of acetate and certain other fibres (method using acetone) Part 4: Mixtures of certain protein and certain other fibres (method using hypochlorite) Part 5: Mixtures of viscose, cupro or modal and cotton fibres (method using sodium zincate) Part 6: Mixtures of vis

31、cose or certain types of cupro or modal or lyocell and cotton fibres (method using formic acid and zinc chloride) Part 7: Mixtures of polyamide and certain other fibres (method using formic acid) Part 8: Mixtures of acetate and triacetate fibres (method using acetone) Part 9: Mixtures of acetate and

32、 triacetate fibres (method using benzyl alcohol) Part 10: Mixtures of triacetate or polylactide and certain other fibres (method using dichloromethane) Part 11: Mixtures of cellulose and polyester fibres (method using sulfuric acid) Part 12: Mixtures of acrylic, certain modacrylics, certain chlorofi

33、bres, certain elastanes and certain other fibres (method using dimethylformamide) Part 13: Mixtures of certain chlorofibres and certain other fibres (method using carbon disulfide/acetone) Part 14: Mixtures of acetate and certain chlorofibres (method using acetic acid) Part 15: Mixtures of jute and

34、certain animal fibres (method by determining nitrogen content) Part 16: Mixtures of polypropylene fibres and certain other fibres (method using xylene) Part 17: Mixtures of chlorofibres (homopolymers of vinyl chloride) and certain other fibres (method using sulfuric acid) Part 18: Mixtures of silk a

35、nd wool or hair (method using sulfuric acid) Foreword The text of ISO 1833-20:2009 has been prepared by Technical Committee ISO/TC 38 “Textiles” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 1833-20:2010 by Technical Committee CEN/TC 248 “Textiles and

36、textile products” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2011, and conflicting national standards shall be withdrawn at the latest by April

37、2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. DIN EN ISO 1833-20:2011-01 EN ISO 1833-20:2010 (E) 3 Part 19: Mixtures of cellul

38、ose fibres and asbestos (method by heating) Part 20: Mixtures of elastane and certain other fibres (method using dimethylacetamide) Part 21: Mixtures of chlorofibres, certain modacrylics, certain elastanes, acetates, triacetates and certain other fibres (method using cyclohexanone) The following par

39、ts are under preparation: Part 22: Mixtures of viscose or certain types of cupro or modal or lyocell and flax fibres (method using formic acid and zinc chlorate) Part 23: Mixtures of polyethylene and polypropylene (method using cyclohexanone) Part 24: Mixtures of polyester and some other fibres (met

40、hod using phenol and tetrachloroethane) According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Ge

41、rmany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 1833-20:2009 has been approved by CEN as a EN ISO 1833-20:2

42、010 without any modification. DIN EN ISO 1833-20:2011-01 EN ISO 1833-20:2010 (E) 4WARNING This part of ISO 1833 calls for the use of substances/procedures that may be injurious to the health/environment if appropriate conditions are not observed. It refers only to technical suitability and does not

43、absolve the user from legal obligations relating to health and safety/environment at any stage. 1 Scope This part of ISO 1833 specifies a method using dimethylacetamide to determine the percentage of elastane, after removal of non-fibrous matter, in textiles made of binary mixtures of certain elasta

44、ne fibres with cotton, viscose, cupro, modal, polyamide, polyester or wool fibres. This method is not applicable when acrylic fibres are present. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition c

45、ited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1833-1:2006, Textiles Quantitative chemical analysis Part 1: General principles of testing 3 Principle The elastane fibre is dissolved out from a known dry mass of the mixture

46、with dimethylacetamide (DMA). 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. The percentage of elastane is found by difference. 4 Reagents Use the reagents described in ISO 1833-1, together with that

47、 specified in 4.1. 4.1 Dimethylacetamide (DMA) SAFETY PRECAUTIONS The harmful effects of this reagent shall be borne in mind, and full precautions shall be taken during use. 5 Apparatus Use the items of apparatus described in ISO 1833-1, together with those described in 5.1 and 5.2. 5.1 Conical flas

48、k, of minimum capacity 250 ml, glass stoppered. 5.2 Heating apparatus, suitable for maintaining the temperature of the flask within the limits 60 C to 65 C. DIN EN ISO 1833-20:2011-01 EN ISO 1833-20:2010 (E) 56 Test procedure Follow the general procedure described in ISO 1833-1, and then proceed as follows. Place the specimen in the conical flask. Add 150 ml of DMA per gram of specimen. Shake to wet the specimen. Leave it for at least for 30 min in the double boiler at 60 C