DIN EN ISO 1833-24-2011 Textiles - Quantitative chemical analysis - Part 24 Mixtures of polyester and certain other fibres (method using phenol and tetrachloroethane) (ISO 1833-24 .pdf

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1、April 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 5

2、9.060.20!$nb.“1756311www.din.deDDIN EN ISO 1833-24Textiles Quantitative chemical analysis Part 24: Mixtures of polyester and certain other fibres (method usingphenol and tetrachloroethane) (ISO 1833-24:2010)English translation of DIN EN ISO 1833-24:2011-04Textilien Quantitative chemische Analysen Te

3、il 24: Mischungen aus Polyester und bestimmten anderen Fasern(Phenol-/Tetrachlorethan-Verfahren) (ISO 1833-24:2010)Englische bersetzung von DIN EN ISO 1833-24:2011-04Textiles Analyse chimique quantitative Partie 24: Mlanges de polyester et de certaines autres fibres (mthode au phnol et auttrachlorth

4、ane) (ISO 1833-24:2010)Traduction anglaise de DIN EN ISO 1833-24:2011-04www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1003.11 DIN EN ISO 1833-24:2011-04 A comma is used as the decimal marker. National foreword This standard has b

5、een prepared by Technical Committee 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

6、 Committee), Working Committee NA 062-05-12 AA Textilchemische Prfverfahren 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 individu

7、al component. Once a component 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 thei

8、r composition. This general 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 solu

9、tion, this is expressly stated 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 mi

10、xtures may also contain salts 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

11、, fats, waxes and water-soluble 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 in

12、terfere with the action of 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 n

13、o longer applicable. Dye in 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

14、procedure for determining 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 1833-24:2011-04 Provisions have been made for recalculating results on the basis of a) permissible deviation

15、s agreed upon for moisture content)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 art

16、icle that is part of the 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 t

17、o occur during the analysis, 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 f

18、actors apply only to undegraded 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

19、be made where desired. Before 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 firs

20、t, unless this is not technically 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 St

21、andard corresponding to the International Standard referred to in this document is as follows: ISO 1833-1 DIN EN ISO 1833-1 ) Commonly used conditioning values shall be used for each fibre, where these are available. 3 DIN EN ISO 1833-24:2011-04 4 National Annex NA (informative) Bibliography DIN EN

22、ISO 1833-1, Textiles Quantitative chemical analysis Part 1: General principles of testing EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1833-24 February 2011 ICS 59.060.01 English Version Textiles Quantitative chemical analysis Part 24: Mixtures of polyester and certain other fibres (meth

23、od using phenol and tetrachloroethane) (ISO 1833-24:2010) Textiles Analyse chimique quantitative Partie 24: Mlanges de polyester et de certaines autres fibres (mthode au phnol et au ttrachlorthane) (ISO 1833-24:2010) Textilien Quantitative chemische Analysen Teil 24: Mischungen aus Polyester und bes

24、timmten anderen Fasern (Phenol-/Tetrachlorethan-Verfahren) (ISO 1833-24:2010) This European Standard was approved by CEN on 2 January 2011. 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 natio

25、nal standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A vers

26、ion in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, C

27、zech Republic, Denmark, Estonia,Finland, France, Germany, 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 EUR

28、OPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1833-24:2011: EContents Page EN ISO 1833-24:2011 (E) DIN EN ISO 1833

29、-24:2011-04 2Foreword3 1 Scope .4 2 Normative references.4 3 Principle 4 4 Reagents and apparatus4 5 Apparatus5 6 Test procedure5 7 Calculation and expression of results .5 Bibliography 6 Foreword The text of ISO 1833-24:2010 has been prepared by Technical Committee ISO/TC 38 “Textiles” of the Inter

30、national Organization for Standardization (ISO) and has been taken over as EN ISO 1833-24:2011 by Technical Committee CEN/TC 248 “Textiles and 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

31、an identical text or by endorsement, at the latest by August 2011, and conflicting national standards shall be withdrawn at the latest by August 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

32、 held responsible for identifying any or all such patent rights. 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, Est

33、onia, Finland, France, Germany, 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 1833-24:2010 has been approved by

34、CEN as a EN ISO 1833-24:2011 without any modification. EN ISO 1833-24:2011 (E) DIN EN ISO 1833-24:2011-04 3WARNING 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

35、suitability and does not 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 phenol and tetrachloroethane to determine the percentage of polyester after removal of non-fibrous matter, in textiles made

36、of binary mixtures of certain polyester fibres with acrylic, polypropylene or aramid fibres. This method is not applicable to coated fabrics. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited

37、 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 polyester fibre is dissolved out from a known dry mass of the mixture, wi

38、th a reagent composed of phenol and tetrachloroethane. 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 polyester is found by difference. 4 Reagents and apparatus Use the reagents des

39、cribed in ISO 1833-1, together with those specified in 4.1 and 4.2. 4.1 Phenol and tetrachloroethane mixture: the reagent mass ratio is 6:4. SAFETY PRECAUTIONS The harmful effects of this reagent shall be borne in mind, and full precautions shall be taken during use. The treatment with this reagent

40、shall be carried out in fume cabinet or hood. 4.2 Ethanol. EN ISO 1833-24:2011 (E) DIN EN ISO 1833-24:2011-04 45 Apparatus 5.1 Conical flask, of minimum capacity 250 ml, glass stoppered. 5.2 Heating apparatus, suitable for maintaining the temperature of the conical flask at (50 2) C (for example, wa

41、ter bath with thermostat). 6 Test procedure Follow the general procedure described in ISO 1833-1, and then proceed as follows. Place the specimen in the conical flask. Add 100 ml of phenol and tetrachloroethane mixture (4.1) per gram of specimen. Shake the conical flask for 10 min at (50 2) C, then

42、decant the liquid through the weighed filter crucible using suction. Add a further 100 ml of phenol and tetrachloroethane mixture, warmed up to (50 2) C, and decant the liquid through the filter crucible. Filter the contents of the conical flask through the weighed filter crucible (ISO 1833-1:2006,

43、6.1) and transfer any residual fibres to the crucible by washing out the residue from the conical flask with 100 ml of ethanol. Repeat the same washing operation with 100 ml of ethanol. Drain the crucible under suction and wash the residue on the filter once with water. Do not apply suction again un

44、til the washing liquor has drained under gravity. Finally, drain the crucible under suction, dry the crucible and residue, then cool and weigh them. 7 Calculation and expression of results Calculate the results as described in the instructions in Clause 10 of ISO 1833-1:2006. The value of d is 1,00. EN ISO 1833-24:2011 (E) DIN EN ISO 1833-24:2011-04 5Bibliography 1 ISO 2076, Textiles Man-made fibres Generic names EN ISO 1833-24:2011 (E) DIN EN ISO 1833-24:2011-04 6