DIN EN ISO 5404-2012 Leather - Physical test methods - Determination of water resistance of heavy leathers (ISO 5404 2011) German version EN ISO 5404 2011《皮革 物理试验方法 厚革的耐水性测定》.pdf

1、March 2012 Translation by DIN-Sprachendienst.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 5

2、9.140.30!$za“1876292www.din.deDDIN EN ISO 5404Leather Physical test methods Determination of water resistance of heavy leathers (ISO 5404:2011)English translation of DIN EN ISO 5404:2012-03Leder Physikalische Prfverfahren Bestimmung der Wasserdichtigkeit von schwerem Leder (ISO 5404:2011)Englische b

3、ersetzung von DIN EN ISO 5404:2012-03Cuir Mthodes dessais physiques Dtermination de la rsistance leau des cuirs pais (ISO 5404:2011)Traduction anglaise de DIN EN ISO 5404:2012-03SupersedesDIN EN ISO 5404:2003-10www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall

4、be considered authoritative.1203.12 DIN EN ISO 5404:2012-03 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 289 “Leather” (Secretariat: UNI, Italy) in collaboration with the International Union of Leather Technologists and Chem

5、ists Societies (IULTCS). This standard is in accordance with method IUP 11. The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-05-51 AA Anforderungen und physika-lische Prfverfahren fr Leder

6、 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 ISO 2589 DIN EN ISO 2589 Amendments This standard differs from DIN EN ISO 5404:2003-10 as follows: a) the specifi

7、cations in 5.2 “Undyed cotton gauze” and in 5.3 “Press knife” have been revised; b) a new Subclause 7.1.5 specifies the force to apply when pressing the test piece on the roller; c) 7.2 has been rendered more precise; d) 7.3.1 and 7.3.2 have been rendered more precise and 7.3.3 has been updated; e)

8、Notes 1 and 2 in 7.4.3 and Note 2 in 7.5.3 have been deleted; f) the Formula in 8.2 used to calculated the water penetration rate has been revised; g) the test report (Clause 9) has been rendered more precise. Previous editions DIN EN ISO 5404: 2003-10 National Annex NA (informative) Bibliography DI

9、N 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, Leather Physical and mechanical tests Determination of thickness EUROPEAN STANDARD NORME EUROPENNE

10、 EUROPISCHE NORM EN ISO 5404 December 2011 ICS 59.140.30 Supersedes EN ISO 5404:2002English 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

11、) 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 alteration. Up-to-date lists and bibliographical

12、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 translation under the responsibility of

13、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, Finland, France, Germany, Greece, Hungary

14、, 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 EUROPISCHES KOMITEE FR NORMUNG Management Centre:

15、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: ELeder - Physikalische Prfverfahren - Bestimmung der Wasserdichtigkeit von schwerem Leder (ISO 5404:2011) Contents EN ISO 5404:20

16、11 (E) DIN EN ISO 5404:2012-03 Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Principle 5 5 Apparatus .5 6 Sampling and sample preparation .6 7 Procedure .7 7.1 General 7 7.2 Determination of penetration time .7 7.3 Determination of water absorption 7 7.4 Determinati

17、on of area of penetration .7 7.5 Determination of water penetration rate .8 8 Expression of results 8 8.1 Water absorption .8 8.2 Water penetration rate .8 9 Test report 9 Annex A (informative) Sources of apparatus .10 2 Foreword This document (EN ISO 5404:2011) has been prepared by Technical Commit

18、tee 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 identical text or by endorsement, at

19、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 responsible for identifying any or all

20、 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, Cyprus, Czech Republic, Denmark, Esto

21、nia, 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. EN ISO 5404:2011 (E) DIN EN ISO 5404:2012-03 3 1 Scope This Internatio

22、nal 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 penetration rate as required. It is applicable to all types of heavy leathers. 2 Normative references The f

23、ollowing 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 referenced document (including any amendments) applies. ISO 2418, Leather Chemical, physical and mechanical an

24、d 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 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1

25、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 minutes. 3.2 water absorption gain in mass of the test piece due to water content during any period of t

26、he 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 (grain) surface to the other face of the test piece NOTE The area is expressed in square millimetres. 3

27、.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 transmitted in the 10 min period after the first penetration of water. EN ISO 5404:2011 (E) DIN EN ISO 54

28、04:2012-03 4 4 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 walking. This enables various aspects of heavy leather water resistance to be measured with respect to time. 5 Apparatus 5.1 Test machine, includ

29、ing 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 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 s

30、urface 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). 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.

31、 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 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 movi

32、ng 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 about 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 t

33、est 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 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 EN I

34、SO 5404:2011 (E) DIN EN ISO 5404:2012-03 5 5.2 Undyed cotton gauze, cut into rectangles of suitable dimension to be 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 i

35、s 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. 5.5 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

36、P-series grit size standard published by the Federation of European Producers of Abrasive Products. 5.7 Balance, reading 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

37、100 mm 40 mm, marked with a central matrix of 28 10 squares of 9 mm2, as shown in Figure 2. Figure 2 Transparent overlay 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

38、surface, oriented with the longer side parallel to the backbone. If there is a requirement for more than two hides or 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 surf

39、ace which is to be in contact with the ground (normally the grain surface), on a fresh piece of abrasive paper (5.6). 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

40、over a length of 100 mm 10 mm each time. NOTE Thin waterproof finish applied to the grain of sole leather can greatly 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 de

41、scribed above prior to testing. The aim of this preparation is to remove the finish. If a heavier finish has been applied, 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

42、 to dry for 35 min 5 min and, if necessary, apply a second coat of adhesive. 6.4 Condition the test piece in accordance 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. EN ISO 5404:2011 (E) DIN EN ISO 5404:2012-03

43、 6 7 Procedure 7.1 General 7.1.1 Weigh the test piece, m0, to the nearest 0,001 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

44、piece on the gauze with the roughened surface downwards and attach the narrow 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

45、clearly seen on the leather surface adjacent to the roller, ignoring any penetration 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

46、observation. 7.3 Determination of water absorption 7.3.1 At the end of a specified 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

47、to force water out of the sample. Weigh the test piece, m1, to the nearest 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).

48、 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 wetted areas, if any, with the areas marked on the overlay. If visual examination shows that wetting of the upper surface starts from the edge, then the test shall be regarded as invalid and repeated with