© ISO 2016 Leather — Physical and mechanical tests — Determination of water vapour absorption Cuir — Essais physiques et mécaniques — Détermination de l’absorption de vapeur d’eau INTERNATIONAL STANDA[.]
INTERNATIONAL STANDARD ISO 17229 IULTCS/IUP 42 Second edition 2016-02-15 Leather — Physical and mechanical tests — Determination of water vapour absorption Cuir — Essais physiques et mécaniques — Détermination de l’absorption de vapeur d’eau Reference numbers ISO 17229:2016(E) IULTCS/IUP 42:2016(E) © ISO 2016 ISO 17229:2016(E) IULTCS/IUP 42:2016(E) COPYRIGHT PROTECTED DOCUMENT © ISO 2016, Published in Switzerland All rights reserved Unless otherwise specified, no part o f this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission Permission can be requested from either ISO at the address below or ISO’s member body in the country o f the requester ISO copyright o ffice Ch de Blandonnet • CP 401 CH-1214 Vernier, Geneva, Switzerland Tel +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org ii © ISO 2016 – All rights reserved ISO 17229:2016(E) IULTCS/IUP 42:2016(E) Contents Page Foreword iv Scope Normative references Principle Apparatus Sampling and sample preparation Procedure Expression of results Test report Annex A (informative) Water vapour number Bibliography © ISO 2016 – All rights reserved iii ISO 17229:2016(E) IULTCS/IUP 42:2016(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies) The work o f preparing International Standards is normally carried out through ISO technical committees 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 International Electrotechnical Commission (IEC) on all matters o f electrotechnical standardization The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part In particular the different approval criteria needed for the di fferent types o f ISO documents should be noted This document was dra fted in accordance with the editorial rules of the ISO/IEC Directives, Part (see www.iso.org/directives) Attention is drawn to the possibility that some o f the elements o f this document may be the subject o f patent rights ISO shall not be held responsible for identi fying any or all such patent rights Details o f any patent rights identified during the development o f 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 in formation given for the convenience o f users and does not constitute an endorsement For an explanation on the meaning o f ISO specific terms and expressions related to formity assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary in formation ISO 17229 was prepared by the Physical Test Commission o f the International Union o f Leather Technologists and Chemists Societies (IUP Commission, IULTCS) in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, the secretariat of which is held by UNI, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement) It is based on IUP 42 which was published in J Soc Leather Tech Chem 84, p 395, (2000) and confirmed as an o fficial method o f the IULTCS in March 2001 IULTCS, originally formed in 1897, is a world-wide organization o f pro fessional leather societies to urther the advancement o f leather science and technology IULTCS has three Commissions, which are f responsible for establishing international methods for the sampling and testing of leather ISO recognizes IULTCS as an international standardizing body for the preparation o f test methods for leather This second edition cancels and replaces the first edition (ISO 17229:2002), o f which it constitutes a minor revision to align item c) of Clause with ISO 2419:2012 iv © ISO 2016 – All rights reserved ISO 17229:2016(E) IULTCS/IUP 42:2016(E) INTERNATIONAL STANDARD Leather — Physical and mechanical tests — Determination of water vapour absorption Scope T h i s I nternationa l Sta ndard s p e ci fie s a me tho d T he me tho d i s appl ic able uppers and linings for for de term i n i ng the water vap our ab s orp tion o f le ather a l l le athers but i s p ar tic u l arly relevant for le athers i ntende d for fo o twe ar Normative references T he fol lowi ng i nd i s p en s able c u ments , i n whole or i n p ar t, are normatively re ference d i n th i s c u ment a nd are for its appl ic ation For date d re ference s , on ly the e d ition cite d appl ie s For u ndate d re ference s , the late s t e d ition o f the re ference d c u ment (i nclud i ng any amend ments) appl ie s ISO 2418, Leather — Chemical, physical and mechanical and fastness tests — Sampling location ISO 2419, Leather — Physical and mechanical tests — Sample preparation and conditioning ISO 3696, Water for analytical laboratory use — Specification and test methods Principle The test piece and an impermeable material are clamped over the opening of a metal container conta i n i ng ml o f water for a s p e ci fie d ti me T he water vap ou r ab s orp tion o f the te s t pie ce is de term i ne d b y the i nc re a s e i n mas s Apparatus 4.1 Cylindrical metal or glass container, with internal diameter of 35 mm ± 0,5 mm, internal depth mm ± mm and an external diameter at the to p o p ening o f at leas t 5 mm, fitted with a metal ring o r lid which can b e s ecurely clamp ed to the cylindrical metal co ntainer 4.2 Balance , weighing to 0,001 g 4.3 Stop clock, reading to 4.4 Vernier callipers , reading to 0,1 mm 4.5 Disc of impermeable material , for example rubber or metal, with the same diameter as the test 4.6 Press knife , the inner wall o f which is a right angled circular cylinder o f diameter 43 piece mm ± mm as s p ecified in I S O 41 4.7 Distilled or deionized water, conforming to the requirements of grade of ISO 3696 © ISO 2016 – All rights reserved ISO 17229:2016(E) IULTCS/IUP 42:2016(E) Sampling and sample preparation 5.1 S amp le in acco rdance with I S O 41 Fro m the s amp le, cut three circular tes t p ieces by ap p lying the press knife to the grain surface, if distinguishable I f there is a requirement for more than two hides or skins to b e tes ted in one b atch, then only one tes t piece need be taken from each hide or skin, provided that the overall total is not less than three test pieces Condition the test piece in accordance with ISO 2419 5.2 NO TE 5.3 Re s u lts wi l l va r y dep end i ng on the co nd ition i n g me tho d u s e d Weigh the test piece to the nearest 0,001 g and record its mass as m Procedure 6.1 Us ing vernier callip ers , meas ure the internal diameter o f the cylindrical co ntainer (to the neares t , mm) in two mutually p erp endicular directio ns and calculate the mean diameter 6.2 Po ur ml ± ml o f dis tilled o r deio nized water at °C ± °C o r °C ± °C into the cylindrical 6.3 Place the tes t p iece centrally over the co ntainer with the s ide which wo uld b e exp o s ed to the higher metal container (4.1) humidity in us e facing wnwards Place a dis c o f imp ermeab le material over the tes t p iece and clamp the upper ring or lid in place taking care not to splash water onto the test piece 6.4 Keep the container at a temperature of 20 °C ± °C or 23 °C ± °C for h ± 0,1 h 6.5 Remove the tes t p iece, weigh immediately to the neares t , 0 g and reco rd its mas s as 6.6 If the test piece is splashed with water discard it and repeat the test with a fresh test piece m2 Expression of results Calculate the water vapour absorption, Awv, in milligrams per square centimetre, using Formula (1): A WV = ( m2 − m1 ) × 10 where (1) π d2 m1 is the initial mass of the test piece, in grams; m2 f d f i s the fi na l ma s s o the te s t pie ce, i n gram s; i s the i nterna l d i ame ter o the c yl i nd ric a l contai ner, i n m i l l i me tre s The calculation of the water vapour number is given in informative Annex A Test report The test report shall include the following: a) a reference to this International Standard, i.e ISO 17229; © ISO 2016 – All rights reserved ISO 17229:2016(E) IULTCS/IUP 42:2016(E) b) the mean water vapour absorption, Awv, in milligrams per square centimetre, expressed to one decimal place; c) the standard atmosphere used for conditioning and testing as given in ISO 2419; from d) a ny deviation s the me tho d s p e c i fie d i n th i s I nternationa l Standard; e) ful l detai l s for identi fication o f the s ample and any deviation from © ISO 2016 – All rights reserved ISO 2418 with respect to sampling ISO 17229:2016(E) IULTCS/IUP 42:2016(E) Annex A (informative) Water vapour number f Pwv, as determined in ISO 14268, and water vapour absorption, Awv, as determined in this International Standard, to determine the water vapour number, Wpn Calculate the water vapour number, Wpn, in milligrams per square centimetre h, using Formula (A.1): Wpn = t × PWV + A WV (A.1) It is com mon where t P A wv wv prac tice to combi ne the re s u lts o water vap ou r p erme abi l ity, is h; i s the water vap ou r p erme abi l ity; is the water vapour absorption © ISO 2016 – All rights reserved ISO 17229:2016(E) IULTCS/IUP 42:2016(E) Bibliography [1] ISO 14268, Leather — Physical and mechanical tests — Determination ofwater vapour permeability © ISO 2016 – All rights reserved ISO 17229:2016(E) IULTCS/IUP 42:2016(E) ICS 9.1 40.3 Price based on pages © ISO 2016 – All rights reserved