EN ISO 15496-2018 en Textiles - Measurement of water vapour permeability of textiles for the purpose of quality control.pdf

1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Textiles - Measurement of water vapour permeability of textiles for the purpose of quality controlBS EN ISO 15496:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15496 May 2018 ICS 59.080.01 Supersedes EN I

2、SO 15496:2004English Version Textiles - Measurement of water vapour permeability of textiles for the purpose of quality control (ISO 15496:2018) Textiles - Mesurage de la permabilit la vapeur deau des textiles dans le but du contrle qualit (ISO 15496:2018) Textilien - Messung der Wasserdampfdurchlss

3、igkeit von Textilien als Qualittskontrolle (ISO 15496:2018)This European Standard was approved by CEN on 8 March 2018. 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

4、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 version in any other lang

5、uage 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, Czech Republic, Denmar

6、k, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COM

7、MITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 15496:2018 ENati

8、onal forewordThis British Standard is the UK implementation of EN ISO 15496:2018. It is identical to ISO 15496:2018. It supersedes BS EN ISO 15496:2004, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee TCI/24, Physical testing of textiles.A list of orga

9、nizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 20

10、18ISBN 978 0 580 84863 6ICS 59.080.01Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2018.Amendments/corrigenda issued since publicationDate Text affected

11、BRITISH STANDARDBS EN ISO 15496:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15496 May 2018 ICS 59.080.01 Supersedes EN ISO 15496:2004English Version Textiles - Measurement of water vapour permeability of textiles for the purpose of quality control (ISO 15496:2018) Textiles - Mesurag

12、e de la permabilit la vapeur deau des textiles dans le but du contrle qualit (ISO 15496:2018) Textilien - Messung der Wasserdampfdurchlssigkeit von Textilien als Qualittskontrolle (ISO 15496:2018)This European Standard was approved by CEN on 8 March 2018. CEN members are bound to comply with the CEN

13、/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-CENELEC Management Cen

14、tre 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 the same status as th

15、e 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, Luxembourg, Malta, Nether

16、lands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018

17、CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 15496:2018 EBS EN ISO 15496:2018EN ISO 15496:2018 (E) 3 European foreword This document (EN ISO 15496:2018) has been prepared by Technical Committee ISO/TC 38 “Textiles” in collab

18、oration 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 November 2018, and conflicting

19、national standards shall be withdrawn at the latest by November 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO

20、 15496:2004. 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, Former Yugoslav Republic of Macedonia

21、, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 15496:2018 has been approved by

22、 CEN as EN ISO 15496:2018 without any modification. BS EN ISO 15496:2018ISO 15496:2018(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Symbols and abbreviated terms . 25 Principle 26 Apparatus . 27 Preparation 37.1 Specimens . 37.2 Measuring cups . 38 Test procedure 48.1

23、 Inserting the specimen and equilibration . 48.2 Placing the measuring cups on the bath . 48.3 Check for waterproofness of the specimen holder membrane . 49 Calculation and expression of results . 410 Precision of results. 410.1 Repeatability . 410.2 Reproducibility . 511 Test report . 5Annex A (inf

24、ormative) Water vapour permeability Classification of test results . 9Annex B (informative) Physical principle behind the test method 10Annex C (informative) Dry desiccant cup methods 12Bibliography .13 ISO 2018 All rights reserved iiiContents PageBS EN ISO 15496:2018ISO 15496:2018(E)ForewordISO (th

25、e 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 committees. Each member body interested in a subject for which a technical committ

26、ee 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 International Electrotechnical Commission (IEC) on all matters of electrotechn

27、ical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted i

28、n accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent right

29、s. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document is information given for the convenience of users and does not consti

30、tute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see t

31、he following URL: www .iso .org/ iso/ foreword .htmlThis document was prepared by Technical Committee ISO/TC 38, Textiles, Subcommittee SC 2, Cleansing, finishing and water resistance tests.This second edition cancels and replaces the first edition (ISO 15496:2004), which has been technically revise

32、d. It also incorporates the Technical Corrigendum ISO 15496:2004/Cor 1:2006.The main changes compared to the previous eddition are as follows: in the scope, it has been clarified that there is some limitation in the use of this method as it relates to ISO 11092; editorial changes have been made thro

33、ughout the document, including to some symbols; in footnote 1, the list of suppliers of the membrane has been removed.iv ISO 2018 All rights reservedBS EN ISO 15496:2018INTERNATIONAL STANDARD ISO 15496:2018(E)Textiles Measurement of water vapour permeability of textiles for the purpose of quality co

34、ntrol1 ScopeThis document describes a comparatively simple method for testing the water vapour permeability of textiles that will provide the manufacturer with a clearly recognized method for quality control within the plant.The simple test method described in this document is not applicable for cla

35、ssifying the water vapour resistance of textiles against values relating to physiological effects specified in product standards, and particularly not those relating to personal protective equipment.The method can be used for quality control but has some limitation in relation to ISO 11092, which gi

36、ves a more comprehensive and relevant result for evaluation of water vapour penetration. Annex A provides further explanation of applicability.This document cannot be used to compare results to other “dry dessicant” methods as they will not correlate. An explanation of the reasons can be found in An

37、nex C.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (incl

38、uding any amendments) applies.ISO 3696, Water for analytical laboratory use Specification and test methods3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.ISO and IEC maintain terminological databases for use in standardization at the following addr

39、esses: ISO Online browsing platform: available at h t t p s :/ www .iso .org/ obp IEC Electropedia: available at h t t p :/ www .electropedia .org/ 3.1water vapour permeabilityWVcharacteristic of a textile material describing the amount of water vapour diffusing through the textile per square metre,

40、 per hour and per unit difference of water vapour pressure across the textile ISO 2018 All rights reserved 1BS EN ISO 15496:2018ISO 15496:2018(E)4 Symbols and abbreviated termsSymbol Description Unita Area of the measuring cup opening m2t Measuring time hm Change in mass of the measuring cup during

41、the period t gmappChange in mass of the measuring cup on the specimen holder with only mem-brane during the period tgp Partial water vapour pressure difference across the specimen PapsaSaturated water vapour pressure at the test room temperature TaPapsbSaturated water vapour pressure at the water ba

42、th temperature TbPa Relative humidity in equilibrium with saturated potassium acetate solution %TaTemperature in the test room CTbTemperature of the water bath CWVWater vapour permeability of the specimen g/m2PahWV,appApparatus water vapour permeability g/m2Pah5 PrincipleThe specimen to be tested is

43、 placed, together with a waterproof but highly water-vapour-permeable, hydrophobic, microporous membrane (henceforth referred to as “membrane”), on a ring holder and then put in a water bath so that the membrane is in contact with the water. This is then left for 15 min. A cup containing saturated p

44、otassium acetate solution, creating a relative humidity of about 23 % at the specimens upper face, and covered with a second piece of the same membrane, is weighed and then inverted above the specimen in the ring holder, so that the membrane is in contact with the specimen. There will be a net trans

45、fer of water vapour through the specimen from the water side to the cup (see Figure 1). After 15 min the cup is taken off and re-weighed. At the same time a control test without a specimen is carried out to determine the water vapour permeability of the two membranes, the apparatus water vapour perm

46、eability. The water vapour permeability of the specimen can then be calculated, correcting for the influence of the two membranes. See Annex B for further explanation of the physical principle behind the test method.6 ApparatusThe schematics of the test set-up are shown in Figure 1.6.1 Membrane, wat

47、erproof, microporous and hydrophobic1). It shall have a high water vapour permeability, so that two layers of the membrane have a water vapour permeability of more than 1,2 g/m2Pah when measured according to this document.6.2 Specimen holder, either a metal or a plastic ring with a milled groove ont

48、o which the specimen in conjunction with the membrane is secured, using a rubber ring that fits into the groove, as shown in Figure 2. The rubber ring shall fit tightly so that the specimen and membrane are held under tension. The bottom outside edge of the specimen holder should be radiused.6.3 Sup

49、port frame for specimen holders, consisting of two plates, separated by spacers, that support the specimen holders in the water (see Figure 3). Both plates should have at least six holes cut out, those in the top plate being large enough to allow the holder with specimen and membrane to pass through. The holes in the lower plate are smaller than the specimen holder, but larger than the cup opening, and 1) This product is commercially available.2 ISO 2018 All rights reservedBS EN ISO 15496:2018ISO 15496:2018(E)t