1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 1833-26:2013Textiles Quantitativechemical analysisPart 26: Mixtures of melamine and cottonor aramide fibres (method using hot formicacid) (ISO 1833-26:2013)BS EN ISO 18
2、33-26:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO1833-26:2013.The UK participation in its preparation was entrusted to TechnicalCommittee TCI/80, Chemical testing of textiles.A list of organizations represented on this committee can beobtained on re
3、quest to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 73552 3ICS 59.060.01Compliance with a British
4、Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2013.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1833-26 March 201
5、3 ICS 59.060.01 English Version Textiles - Quantitative chemical analysis - Part 26: Mixtures of melamine and cotton or aramide fibres (method using hot formic acid) (ISO 1833-26:2013) Textiles - Analyse chimique quantitative - Partie 26: Mlanges de fibres de mlamine et de fibres de coton ou daramid
6、e (mthode lacide formique chaud) (ISO 1833-26:2013) Textilien - Quantitative chemische Analyse - Teil 26: Mischungen aus Melamin und Baumwolle oder Aramidfasern (Verfahren mit heier Ameisensure) (ISO 1833-26:2013) This European Standard was approved by CEN on 2 February 2013. CEN members are bound t
7、o 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. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-C
8、ENELEC 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 under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has
9、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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxe
10、mbourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN
11、 All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1833-26:2013: EBS EN ISO 1833-26:2013EN ISO 1833-26:2013 (E) 3 Foreword This document (EN ISO 1833-26:2013) has been prepared by Technical Committee ISO/TC 38 “Textiles“ in collabora
12、tion with 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 an identical text or by endorsement, at the latest by September 2013, and conflicting na
13、tional standards shall be withdrawn at the latest by September 2013. 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. According to the
14、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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hun
15、gary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 1833-26:2013 has been approved by CEN as EN ISO 1833-26:2013 without
16、any modification. BS EN ISO 1833-26:2013ISO 1833-26:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committe
17、es. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Inte
18、rnational Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Sta
19、ndards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subje
20、ct of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 1833-26 was prepared by Technical Committee ISO/TC 38, Textiles.ISO 1833 consists of the following parts, under the general title Textiles Quantitative chemical analysis: Part 1: General principl
21、es of testing Part 2: Ternary 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
22、) Part 6: Mixtures of viscose 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
23、: Mixtures of acetate and 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 moda
24、crylics, certain chlorofibres, 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
25、15: Mixtures of jute and 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) Pa
26、rt 18: Mixtures of silk and wool or hair (method using sulfuric acid) ISO 2013 All rights reserved iiiBS EN ISO 1833-26:2013ISO 1833-26:2013(E) Part 19: Mixtures of cellulose fibres and asbestos (method by heating) Part 20: Mixtures of elastane and certain other fibres (method using dimethylacetamid
27、e) Part 21: Mixtures of chlorofibres, certain modacrylics, certain elastanes, acetates, triacetates and certain other fibres (method using cyclohexanone) Part 22: Mixtures of viscose or certain types of cupro or modal or lyocell and flax fibres (method using formic acid and zinc chloride) Part 24: M
28、ixtures of polyester and some other fibres (method using phenol and tetrachloroethane) Part 25: Mixtures of polyester and cotton or aramid fibres (method using trichloracetic acid and chloroform) Part 26: Mixtures of melamine and cotton or aramid fibres (method using hot formic acid)The following pa
29、rt is cancelled: Part 23: Mixtures of polyethylene and polypropylene (method using cyclohexanone)iv ISO 2013 All rights reservedBS EN ISO 1833-26:2013Textiles Quantitative chemical analysis Part 26: Mixtures of melamine and cotton or aramide fibres (method using hot formic acid)WARNING This part of
30、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 absolve the user from legal obligations relating to health and safety/environment at any stage.1 ScopeT
31、his part of ISO 1833 specifies a method using hot formic acid to determine the percentage of melamine fibres after removal of non-fibrous matter, in textiles made of binary mixtures of melamine fibres with cotton or aramid fibres.2 Normative referencesThe following referenced documents are indispens
32、able for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 1833-1, Textiles Quantitative chemical analysis Part 1: General principles of testing3 Princip
33、leThe melamine fibre is dissolved out from a known dry mass of the mixture with hot formic acid (90 % by mass). 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 the second constituent
34、 is obtained by difference.4 Reagents4.1 GeneralUse the reagents described in ISO 1833-1, together with those specified in 4.2 and 4.3.4.2 Formic acid (90 % mass fraction, relative density at 20 C: 1,204 g/ml)Dilute 890 ml of 98 to 100 % mass fraction formic acid (relative density at 20 C: 1,220 g/m
35、l) to 1 l with water.SAFETY PRECAUTIONS The harmful effects of this reagent shall be borne in mind, and full precautions shall be taken during use.4.3 Ammonia, dilute solutionDilute 80 ml of concentrated ammonia solution (relative density at 20 C: 0,880 g/ml) to 1 l with water.INTERNATIONAL STANDARD
36、 ISO 1833-26:2013(E) ISO 2013 All rights reserved 1BS EN ISO 1833-26:2013ISO 1833-26:2013(E)5 Apparatus5.1 GeneralUse the apparatus described in ISO 1833-1, together with those described in 5.2 and 5.3.5.2 Conical flask, of minimum capacity of 200 ml, glass stopper.5.3 Shaking water bath, or other a
37、pparatus, having a reciprocating or circularly platform at a frequency of about 160 cycles per minute (respectively 160 “to-and-fro” per min or 160 rpm), and maintain the flask (5.2) at (90 2) C.6 Test procedureFollow the general procedure described in ISO 1833-1, and then proceed as follows.6.1 Pla
38、ce the specimen in the conical flask.6.2 Add 100 ml of formic acid reagent per gram of specimen.6.3 Insert the stopper and shake the flask to wet out the specimen.6.4 Maintain the flask in a shaking water bath (5.3) at (90 2) C for one hour, shaking it vigorously.NOTE The solubility of melamine is v
39、ery much dependent on the temperature.6.5 Cool the flask to room temperature.6.6 Decant the liquid through the weighed filter crucible.6.7 Add further 50 ml of formic acid reagent to the flask containing the residue, shake manually and filter the contents of the flask through the filter crucible.6.8
40、 Transfer any residual fibres to the crucible by washing out the flask with a little more formic acid reagent.6.9 Drain the crucible with suction and wash the residue with formic acid reagent, hot water, dilute ammonia solution, and finally cold water, draining the crucible with suction after each a
41、ddition.6.10 Do not apply suction until each washing liquor has drained under gravity.6.11 Finally, drain the crucible with suction, dry the crucible and residue, and cool and weigh them.7 Calculation and expression of resultsCalculate the results as described in the general instructions of ISO 1833
42、-1.The value of the correction factor of variation in mass of insoluble component in the reagent (d) is 1,02.8 PrecisionOn a homogeneous mixture of textile materials, the confidence limits of results obtained by this method are not greater than 2 for the confidence level of 95 %.2 ISO 2013 All right
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