DIN EN ISO 19074-2015 Leather - Physical and mechanical tests - Determination of water absorption by capillary action (wicking) (ISO 19074 2015) German version EN ISO 19074 2015《皮革.pdf

1、December 2015 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 59.140.30!%J“2399692www.din.deDI

2、N EN ISO 19074Leather Physical and mechanical tests Determination of water absorption by capillary action (wicking) (ISO 19074:2015);English version EN ISO 19074:2015,English translation of DIN EN ISO 19074:2015-12Leder Physikalische und mechanische Prfungen Bestimmung der Wasseraufnahme durch Kapil

3、larwirkung (Dochteffekt) (ISO 19074:2015);Englische Fassung EN ISO 19074:2015,Englische bersetzung von DIN EN ISO 19074:2015-12Cuir Essais physiques et mcaniques Dtermination de labsorption en eau par capillarit (mche) (ISO 19074:2015);Version anglaise EN ISO 19074:2015,Traduction anglaise de DIN EN

4、 ISO 19074:2015-12www.beuth.deDocument comprises pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.1101.16DIN EN ISO 19074:2015-12 2 A comma is used as the decimal marker. National foreword This document (EN ISO 19074:2015) has b

5、een prepared by Technical Committee CEN/TC 289 “Leather” (Secretariat: UNI, Italy) in collaboration with the International Union of Leather Technologists and Chemists Societies (IULTCS). The responsible German body involved in its preparation was DIN-Normenausschuss Materialprfung (DIN Standards Com

6、mittee Materials Testing), Working Committee NA 062-05-51 AA Anforderungen und physikalische Prfverfahren fr Leder und seine Ausgangsprodukte. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 2418 DIN EN ISO 2418 ISO 2419 DIN EN ISO 2419

7、 ISO 2589 DIN EN ISO 2589 ISO 3696 DIN EN ISO 3696 National Annex NA (informative) Bibliography DIN EN ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location DIN EN ISO 2419, Leather Physical and mechanical tests Sample preparation and conditioning DIN EN ISO 2589,

8、Leather Physical and mechanical tests Determination of thickness DIN ISO 3696, Water for analytical laboratory use Specification and test methods EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 19074 September 2015 ICS 59.140.30 English Version Leather - Physical and mechanical tests - Dete

9、rmination of water absorption by capillary action (wicking) Cuir - Essais physiques et mcaniques - Dtermination de labsorption en eau par capillarit (mche) Leder - Physikalische und mechanische Prfungen - Bestimmung der Wasseraufnahme durch Kapillarwirkung (Dochteffekt) (ISO 19074:2015) This Europea

10、n Standard was approved by CEN on 8 August 2015. 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. Up-to-date lists and bibliographical references concer

11、ning 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 language made by translation under the responsibility of a CEN member into

12、 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, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Ge

13、rmany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, 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

14、FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 19074:2015 E(ISO 19074:2015) (ISO 19074:2015) Foreword .1 Scope .2 Normative references 3 Principl

15、e 4 Apparatus and materials5 Sampling and sample preparation 6 Procedure.7 Expression of results 8 Test report .Contents PageEuropean foreword . 3 EN ISO 19074:2015 (E) 2455556789DIN EN ISO 19074:2015-12European foreword This document (EN ISO 19074:2015) has been prepared by Technical Committee CEN/

16、TC 289 “Leather”, the secretariat of which is held by UNI, in collaboration with Technical Committee IULTCS “International Union of Leather Technologists and Chemists Societies”. This European Standard shall be given the status of a national standard, either by publication of an identical text or by

17、 endorsement, at the latest by March 2016, and conflicting national standards shall be withdrawn at the latest by March 2016. 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 ide

18、ntifying 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, Estonia, Finland, Former Yug

19、oslav Republic of Macedonia, France, Germany, Greece, Hungary, 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 19074:2015 h

20、as been approved by CEN as EN ISO 19074:2015 without any modification. EN ISO 19074:2015 (E) 3DIN EN ISO 19074:2015-12ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Stand

21、ards 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 ta

22、ke part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical 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 pa

23、rticular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (www.iso.org/directives).Attention is drawn to the possibility that some of the elements of thi

24、s document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. 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.

25、iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the

26、WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.ISO 19074 was prepared by the Physical Test Commission of the International Union of Leather Technologists and Chemists Societies (IUP Commission, IULTCS) in collaboration with the Eur

27、opean 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 co-operation between ISO and CEN (Vienna Agreement).IULTCS, originally formed in 1897, is a world-wide organization of professiona

28、l leather societies to further the advancement of leather science and technology. IULTCS has three Commissions, which are responsible for establishing international methods for sampling and the testing of leather. ISO recognizes IULTCS as an International Standardising Body for the preparation of te

29、st methods for leather.EN ISO 19074:2015 (E) 4DIN EN ISO 19074:2015-121 ScopeThis International Standard specifies a method for determining the rate of absorption of water by capillary action or wicking in leathers. It is applicable to all types of leather.2 Normative referencesThe following documen

30、ts, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 2418, Leather Chemical, p

31、hysical and mechanical and fastness tests Sampling locationISO 2419, Leather Physical and mechanical tests Sample preparation and conditioningISO 2589, Leather Physical and mechanical tests Determination of thicknessISO 3696, Water for analytical laboratory use Specification and test methods3 Princi

32、pleFor the determination of wicking the absorption of water by capillary action, a strip of leather is partially immersed in water in a vertical position. After 120 min, the following parameters are measured:a) wicking value as the maximum height reached by the water front on the strip of leather;b)

33、 percentage increase of the weight of the test piece due to absorption of water.4 Apparatus and materials4.1 250 ml beaker, of low form or container ensuring the compliance with the conditions shown in Figure 2.4.2 A means of holding the top of the leather test piece, so that the lower end can be im

34、mersed in the water.4.3 Balance, with an accuracy less than 0,01 g.4.4 Ruler, or other similar device, with an accuracy less than 0,5 mm.4.5 Metal mass, of (10 1) g.4.6 Press knife, the inner wall of which is a rectangle (100 2) mm (25 1) mm.4.7 Circular press knife, with diameter approximately 2 mm

35、4.8 Distilled or deionised water, conforming to the requirements of grade 3 of ISO 3696.EN ISO 19074:2015 (E) 5DIN EN ISO 19074:2015-124.9 Thickness gauge, as specified in ISO 2589.5 Sampling and sample preparation5.1 If possible, sample in accordance with ISO 2418. From the sample, using the press

36、 knife specified in 4.6, cut four rectangular test pieces (100 2) mm (25 1) mm, in accordance with ISO 2419, two with the longer side parallel to the backbone and two with the longer side perpendicular to the backbone.NOTE If there is a requirement for more than two hides or skins to be tested in on

37、e batch, then only one test piece in each direction needs to be taken from each hide or skin, provided that the overall total is not less than two test pieces in each direction.5.2 Condition the leather sample in accordance with ISO 2419.5.3 Measure the thickness of the test pieces in accordance wit

38、h ISO 2589.5.4 Using a water resistant marker, mark lines parallel to the lower shorter edge test piece at the following distances (see Figure 1): line 1: (10 1) mm; line 2: (50 1) mm.5.5 For very flexible leathers or leathers having heavy finishing, a “rolling” of the test piece could occur prevent

39、ing it from maintaining a vertical position during the test. In this case, a mass (4.5) of (10 1) g shall be applied to the lower edge of the test piece using a nylon thread or a small hook through a hole (4.7) of approximately 2 mm diameter made at a distance of (5 1) mm from the lower edge and in

40、the centre of the width of the test piece (see Figure 1).The hole (4.7) is only required for those leather specimens that need to be prevented from “rolling”.Dimensions in millimetresKey1 line 12 line 2Figure 1 Test piece marked and prepared for testingEN ISO 19074:2015 (E) 6DIN EN ISO 19074:2015-12

41、6 Procedure6.1 Carry out the test in standard atmosphere according to ISO 2419.6.2 Pour distilled water (4.8) into the container verifying with the ruler (4.4) that the height of water is (40 5) mm (see Figure 2).6.3 Determine the mass of each test piece after conditioning, m0, to the nearest 0,05 g

42、6.4 Immerse each test piece in distilled water in a vertical position until line 1 drawn on the surface (see Figure 2); the test piece shall be kept suspended by its upper part (4.2) so as to leave at least 65 mm of free height (including the immersed part) as shown in Figure 2. Do not immerse more

43、 than two test pieces in the same container and ensure that the test piece does not touch the other one or the container walls.Dimensions in millimetresFigure 2 Test piece suspended in distilled water6.5 If necessary, apply the metal mass of 10 g (4.5) to the test piece as indicated in 5.5.6.6 After

44、 (120 5) min, remove the test piece and blot gently to remove adhering water on the surfaces using filter paper.6.7 In the shortest time possible (within 3 min), with the ruler (4.4), determine the wicking of water as the maximum distance reached by the water front in the longitudinal direction of t

45、he test piece, in the following positions (see Figure 3): maximum distance on the grain side (or front side), WA; maximum distance on the flesh side (or reverse side), WB; maximum distance on the lateral sides (thickness), WCand WD.Round each water front distance to the nearest 1 mm.EN ISO 19074:201

46、5 (E) 7DIN EN ISO 19074:2015-12Figure 3 Measurement of height of water front on each side of test piece6.8 Maximum water front distance on the lateral sides (thickness), WCand WD, shall be assessed only for leathers with thickness greater than 1 mm.6.9 Within 5 min after removal of water, determine

47、the mass m1of the test piece to the nearest 0,05 g.6.10 If the water front reaches line 2 (see 5.4) on one of the sides before 120 min, immediately stop the test.6.11 If required, the test pieces can be used to determine if a change in appearance occurs through contact with water. Allow the test pie

48、ces to dry, examine them for any change in appearance or staining in the part that was immersed in water.7 Expression of results7.1 Wicking by capillary action (W)7.1.1 For each test piece, determine the wicking value, Wi, as the maximum of the four water front distances (in mm) measured as indicate

49、d in 6.7.WWWWWiABCD=()max, (1)For leathers with thickness 1 mm, WCand WDare not determined (see 6.8) and therefore, the wicking value, Wi, is determined as the maximum of two water front distances (in mm) measured as indicated in 6.7.WWWiAB=()max, (2)7.1.2 Calculate the arithmetic mean of the values Wifor the test pieces parallel to the backbone and the test pieces perpendicular to the backbone to the nearest 1 mm.7.1.3 Determine the wicking value of the sample, W, as the higher of these