EN ISO 5404-2011 en Leather - Physical test methods - Determination of water resistance of heavy leathers《皮革 物理试验方法 厚革的耐水性测定》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 5404:2011Leather Physical testmethods Determinationof water resistance of heavyleathers (ISO 5404:2011)BS EN ISO 5404:2011 BRITISH STANDARDNational forewordThis British

2、 Standard is the UK implementation of EN ISO 5404:2011.It supersedes BS EN ISO 5404:2002 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee TCI/69, Footwear, leather and coated fabrics.A list of organizations represented on this committee can beobtained on

3、 request 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 2012ISBN 978 0 580 67826 4ICS 59.140.30Compliance with a British Standard cannot confer immunity froml

4、egal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2012.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 5404 December 2011 ICS 59.140.30 Supersedes EN ISO 5

5、404:2002English Version Leather - Physical test methods - Determination of water resistance of heavy leathers (ISO 5404:2011) Cuir - Mthodes dessais physiques - Dtermination de la rsistance leau des cuirs pais (ISO 5404:2011) Leder - Physikalische und mechanische Prfungen - Bestimmung der Wasserdich

6、tigkeit von schwerem Leder (ISO 5404:2011) This European Standard was approved by CEN on 14 December 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 national standard without any alterati

7、on. 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 language made by

8、 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, Denmark, Estonia,

9、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 EUROPEN DE NORMALISATION EUROPISCH

10、ES 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 5404:2011: EBS EN ISO 5404:2011EN ISO 5404:2011 (E) 3 Foreword This document (EN ISO 5404:2011) has

11、 been prepared by Technical Committee CEN/TC 289 “Leather”, the secretariat of which is held by UNI, in collaboration with the 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 ide

12、ntical text or by endorsement, at the latest by June 2012, and conflicting national standards shall be withdrawn at the latest by June 2012. 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 resp

13、onsible for identifying any or all such patent rights. This document supersedes EN ISO 5404:2002. 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, Cyp

14、rus, Czech 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 the United Kingdom. BS EN ISO 5404:2011ISO 5404:2011(E)

15、IULTCS/IUP 11:2011(E) ISO 2011 All rights reserved iiiForeword ISO (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 committees.

16、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 Internat

17、ional 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 Stand

18、ards 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 subjec

19、t of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 5404 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, in collaboration with the Physical Test Commission of the International Union of Lea

20、ther Technologists and Chemists Societies (IUP Commission, IULTCS), in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). IULTCS, originally formed in 1897, is a world-wide organization of professional leather societies to further the advancement of leathe

21、r science and technology. IULTCS has three Commissions, which are responsible for establishing international methods for the sampling and testing of leather. ISO recognizes IULTCS as an international standardizing body for the preparation of test methods for leather. This second edition cancels and

22、replaces the first edition (ISO 5404:2002), which has been technically revised in the following clauses and subclauses: 5.1.2, 5.2, 5.3, 6.1, 7.1.5, 7.3, 7.4, 8 and 9. BS EN ISO 5404:2011BS EN ISO 5404:2011INTERNATIONAL STANDARD ISO 5404:2011(E)IULTCS/IUP 11:2011(E) ISO 2011 All rights reserved 1Lea

23、ther Physical test methods Determination of water resistance of heavy leathers 1 Scope This International Standard specifies a method for determining the water resistance of heavy leathers. The method allows determination of the penetration time, water absorption, area of penetration and water penet

24、ration rate as required. It is applicable to all types of heavy leathers. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenc

25、ed document (including any amendments) applies. ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location ISO 2419, Leather Physical and mechanical tests Sample preparation and conditioning ISO 2589, Leather Physical and mechanical tests Determination of thickness 3 Te

26、rms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 penetration time duration of flexing which is just sufficient to cause water to cross from the wetted (grain) surface to the other face of the test piece NOTE The penetration time is expressed in mi

27、nutes. 3.2 water absorption gain in mass of the test piece due to water content during any period of the test NOTE Water absorption is expressed as a percentage of the conditioned mass of the test piece prior to test. 3.3 area of penetration sum of the areas where water has crossed from the wetted (

28、grain) surface to the other face of the test piece NOTE The area is expressed in square millimetres. 3.4 penetration rate rate at which water is transmitted through the leather NOTE The penetration rate is expressed in grams per square centimetre (of leather) per hour, based on the mass of water tra

29、nsmitted in the 10 min period after the first penetration of water. BS EN ISO 5404:2011ISO 5404:2011(E) IULTCS/IUP 11:2011(E) 2 ISO 2011 All rights reserved4 Principle The test piece is continuously wetted on one surface and is flexed and compressed in the same manner as the sole of a shoe during wa

30、lking. This enables various aspects of heavy leather water resistance to be measured with respect to time. 5 Apparatus 5.1 Test machine, including the items described in 5.1.1 to 5.1.7. The general arrangement of the test machine is shown in Figure 1. 5.1.1 Roller (A), diameter 120 mm 2 mm and width

31、 at least 50 mm. 5.1.2 Platform (C), measuring 100 mm 1 mm 40 mm 1 mm, with a roughened upper surface and sufficient perforations to keep the surface wet by a flow of water through the platform. 5.1.3 Clamp (D), to hold one short side of the test piece (B) in a horizontal position on the platform (C

32、). 5.1.4 Clamp (E), to attach the other short side of the test piece to the roller, the attached side being parallel to the axis of the roller. The clamp is held by a weak spring to maintain the sample under slight tension. The positioning of clamps D and E shall ensure a total length of test piece

33、on the platform of 100 mm 1 mm. 5.1.5 Water supply (F), through the platform (C) and a means of draining away excess water. 5.1.6 Means of moving the axis of the roller, using a crank motion along the horizontal line XY with an amplitude of 100 mm 2 mm and a frequency of (20 1) cycles per minute abo

34、ut a point directly over the mid-point of the test piece. The movement of the axis causes the roller to move backwards and forwards along the test piece, raising one end and bending it to conform to the shape of the roller. 5.1.7 Means of pressing the platform, test piece and roller together with a

35、force of 80 5 N. ADBCEFX YKey A roller B test piece C platform D clamp E clamp F water supply Figure 1 General arrangement of test machine BS EN ISO 5404:2011ISO 5404:2011(E) IULTCS/IUP 11:2011(E) ISO 2011 All rights reserved 35.2 Undyed cotton gauze, cut into rectangles of suitable dimension to be

36、fixed on the platform. 5.3 Press knife, the inner wall of which is a rectangle of suitable length to be fixed in the clamps so that the total length of the test piece on the platform is 100 mm 1 mm with a width of 40 mm 1 mm, as specified in ISO 2419. 5.4 Thickness gauge, as specified in ISO 2589. 5

37、.5 Absorbent cellulosic board, thickness 1,6 mm 0,1 mm and mass 1 200 g/m2 300 g/m2, cut into rectangles of (105 mm 5 mm 60 mm 5 mm). 5.6 Abrasive paper, grade P120, as defined in the P-series grit size standard published by the Federation of European Producers of Abrasive Products. 5.7 Balance, rea

38、ding to 0,001 g. 5.8 Clock, reading to 1 s. 5.9 Flexible waterproof adhesive, for example polychloroprene, poly(vinyl chloride) or polyurethane. 5.10 Transparent overlay, minimum size 100 mm 40 mm, marked with a central matrix of 28 10 squares of 9 mm2, as shown in Figure 2. Figure 2 Transparent ove

39、rlay 6 Sampling and sample preparation 6.1 Sample in accordance with ISO 2418. Cut at least three test pieces from the laboratory sample by applying the press knife (5.3) to the grain surface, oriented with the longer side parallel to the backbone. If there is a requirement for more than two hides o

40、r skins to be tested in one batch, then only one test piece need be taken from each hide or skin, provided that the overall total is not less than three test pieces. 6.2 Place the surface which is to be in contact with the ground (normally the grain surface), on a fresh piece of abrasive paper (5.6)

41、. Press the test piece against the abrasive paper with a force of 10 N 1 N. Roughen the leather surface by moving the test piece ten times backwards and forwards on the abrasive paper over a length of 100 mm 10 mm each time. NOTE Thin waterproof finish applied to the grain of sole leather can greatl

42、y reduce water penetration during the test, but can be ineffective on a sole in practice because it is rapidly removed during wear. For this reason, the test pieces are roughened as described above prior to testing. The aim of this preparation is to remove the finish. If a heavier finish has been ap

43、plied, then more abrasion may be required. 6.3 Apply a coat of flexible adhesive (5.9) to the cut edges of the test piece, ensuring that there are no air bubbles within the coat. Allow to dry for 35 min 5 min and, if necessary, apply a second coat of adhesive. 6.4 Condition the test piece in accorda

44、nce with ISO 2419. 6.5 If the water penetration rate is to be determined, condition the cellulosic board (5.5) in accordance with ISO 2419. BS EN ISO 5404:2011ISO 5404:2011(E) IULTCS/IUP 11:2011(E) 4 ISO 2011 All rights reserved7 Procedure 7.1 General 7.1.1 Weigh the test piece, m0, to the nearest 0

45、,001 g. 7.1.2 Determine the thickness in accordance with ISO 2589. 7.1.3 Place the cotton gauze (5.2) on the platform and adjust the flow of water to give a flow of 7,5 ml/min 2,5 ml/min over the platform. 7.1.4 Lay the test piece on the gauze with the roughened surface downwards and attach the narr

46、ow ends to the platform and roller. 7.1.5 Press the test piece on the roller with a force of 80 N 5 N. 7.1.6 Set the roller in motion and record the time. 7.2 Determination of penetration time Note the time at which water is clearly seen on the leather surface adjacent to the roller, ignoring any pe

47、netration that occurs within an area 5 mm from the edge of the test piece. An acoustic or optical signal may be used to help detect initial water penetration, but the effective penetration of water shall be checked by visual observation. 7.3 Determination of water absorption 7.3.1 At the end of a sp

48、ecified period of time (i.e. 15 min, 30 min, 60 min or when penetration of water occurs), stop the machine, remove the test piece and blot it lightly with filter paper to remove water adhering to the surface, taking care not to force water out of the sample. Weigh the test piece, m1, to the nearest

49、0,001 g. 7.3.2 If the determination of water absorption after longer periods of time is required, return the test piece to the machine and continue the test. 7.3.3 Repeat the procedure until the test is completed (see 7.5.4). 7.4 Determination of area of penetration 7.4.1 At the end of the first hour of testing, stop the machine and remove the test piece. Lay the transparent overlay over the upper surface of the test piece and estimate the total area of penetration by comparing the wette