DIN EN ISO 17230-2011 Leather - Physical and mechanical tests - Determination of water penetration pressure (ISO 17230 2006) German version EN ISO 17230 2011《皮革 物理和机械试验 水的渗透压力测定(IS.pdf

1、December 2011 Translation by DIN-Sprachendienst.English price group 6No 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).IC

2、S 59.140.30!$xXb“1855363www.din.deDDIN EN ISO 17230Leather Physical and mechanical tests Determination of water penetration pressure (ISO 17230:2006)English translation of DIN EN ISO 17230:2011-12Leder Physikalische und mechanische Prfungen Bestimmung des Wasserdurchlssigkeitsdruckes (ISO 17230:2006

3、)Englische bersetzung von DIN EN ISO 17230:2011-12Cuir Essais physiques et mcaniques Dtermination de la pression de pntration de leau (ISO 17230:2006)Traduction anglaise de DIN EN ISO 17230:2011-12SupersedesDIN EN 14289:2004-03www.beuth.deIn case of doubt, the German-language original shall be consi

4、dered authoritative.Document comprises 9 pages12.11 DIN EN ISO 17230:2011-12 2 A comma is used as the decimal marker. National foreword This standard has been prepared by the “International Union of Leather Technologists and Chemists Societies (IULTCS)” and has been taken over as EN ISO 17230:2011 b

5、y Technical Committee CEN/TC 289 “Leather” (Secretariat: UNI, Italy). 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 und s

6、eine 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 3696 DIN ISO 3696 Amendments This standard differs from DIN EN 14289:2004-03 as follows: a) the number of the stand

7、ard has been changed. Previous editions DIN EN 14289: 2004-03 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 IS

8、O 3696, Water for analytical laboratory use Specification and test methods EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17230 September 2011 ICS 59.140.30 Supersedes EN 14289:2003English Version Leather - Physical and mechanical tests - Determination of water penetration pressure (ISO 17

9、230:2006) Cuir - Essais physiques et mcaniques - Dtermination de la pression de pntration de leau (ISO 17230:2006) Leder - Physikalische und mechanische Prfungen - Bestimmung des Wasserdurchlssigkeitsdruckes (ISO 17230:2006) This European Standard was approved by CEN on 18 August 2011. CEN members a

10、re 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 concerning such national standards may be obtained on application to

11、 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 its own language and notified to the CEN-CENELEC Management C

12、entre 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, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, N

13、orway, 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: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any fo

14、rm and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17230:2011: EContents Page Foreword3 1 Scope 4 2 Normative references 4 3 Principle4 4 Apparatus .4 5 Sampling and sample preparation.5 6 Procedure .5 7 Expression of results 5 8 Test report 6 Annex A (informative) Sour

15、ce of apparatus .7 DIN EN ISO 17230:2011-12 EN ISO 17230:2011 (E) 2 Foreword The text of ISO 17230:2006 has been prepared by International Union of Leather Technologists and Chemists Societies and has been taken over as EN ISO 17230:2011 by Technical Committee CEN/TC 289 “Leather” the secretariat of

16、 which is held by UNI. 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 March 2012, and conflicting national standards shall be withdrawn at the latest by March 2012. Attention is drawn to the poss

17、ibility 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 such patent rights. This document supersedes EN 14289:2003. According to the CEN/CENELEC Internal Regulations, the national standards or

18、ganizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,

19、Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 17230:2006 has been approved by CEN as a EN ISO 17230:2011 without any modification. DIN EN ISO 17230:2011-12 EN ISO 17230:2011 (E) 3 1 Scope This International Standard descr

20、ibes a method for determining the water penetration pressure of leather. 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 reference

21、d 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 3696, Water for analytical laboratory use Specifications and test methods 3

22、Principle A sample of leather is clamped over a container of water with the surface of the leather in contact with the water. The water pressure is raised at a specified rate and the pressure required to force droplets of water through the leather is measured. 4 Apparatus 4.1 Cup, in the form of a s

23、hort non-corrosive metal circular cylinder, internal diameter 40,0 mm 0,2 mm with the open end uppermost. 4.2 Annular clamp, internal diameter 40,0 mm 0,2 mm, capable of clamping the leather test piece across the cup (4.1) without slippage when a pressure of 65 kPa is applied. 4.3 Stiff wire gauze,

24、with eight holes per 25 mm, circular in shape and held in place around the circumference by the annular clamp (4.2), or welded into position. 4.4 Means of increasing pressure, such that the water in the cup is subjected to a uniform increase in pressure of 3 kPa/min 0,3 kPa/min to a maximum pressure

25、 of 65 kPa. 4.5 Distilled or deionized water, conforming to the requirements of grade 3 of ISO 3696. 4.6 Press knife, the inner surface of which is a right angled circular cylinder, capable of cutting a circular test piece which can be clamped between the cup (4.1) and annular clamp (4.2) and confor

26、ming to ISO 2419. NOTE To preserve the area of a test skin or hide, the whole skin or hide may be placed on the test apparatus and the press knife becomes optional. DIN EN ISO 17230:2011-12 EN ISO 17230:2011 (E) 4 5 Sampling and sample preparation 5.1 Sample in accordance with ISO 2418. Cut three te

27、st pieces by applying the press knife (4.6) to the grain surface. NOTE If there is a requirement for more than two hides or skins to be tested in one batch, then only one sample need be taken from each hide or skin, provided that the overall total is not less than three test pieces. 5.2 Carry out al

28、l further steps at 20 C 2 C or 23 C 2 C. There is no need to condition test pieces nor is there any need for humidity control. 6 Procedure 6.1 Fill the cup (4.1) with distilled or deionized water (4.5) at the controlled temperature (5.2). 6.2 Place the leather over the cup with the surface which wou

29、ld be wetted in wear in contact with the water. Place a stiff gauze over the leather and clamp in position. NOTE The stiff gauze prevents the leather from becoming distended during the test. 6.3 Apply pressure to the water, increasing the pressure at a uniform rate of 3,0 kPa/min 0,3 kPa/min until c

30、ompletion of the test. 6.4 Observe the surface of the leather for the appearance of globules of water which have been forced through the leather and note the pressure when three such globules are visible. This is the water penetration pressure. NOTE 1 The appearance of the third droplet is taken as

31、the end point rather than the first so that the result will not be duly influenced by the presence of a few capillaries of slightly greater dimensions than the remainder. NOTE 2 If the leather is not sufficiently waterproof to be assessed by this test, then failure will be as damp patches rather tha

32、n discrete droplets. These results are less reliable. If the leather fails at a pressure of less than 2,5 kPa, then these low pressures are of little value in discriminating between samples. 6.5 If the third droplet has not appeared when a pressure of 65 kPa is reached, terminate the test. 7 Express

33、ion of results 7.1 Express the water penetration pressure to the nearest 0,1 kPa. If the leather has not failed at a pressure of 65 kPa, report the water penetration pressure as “greater than 65 kPa”. 7.2 If the leather fails because the water penetrates as damp patches, include this as a comment on

34、 the test report. NOTE Penetration pressures are sometimes expressed as “mmHg” or “cmHg”. If the results are to be expressed in these units, then 1 kPa = 7,5 mmHg = 0,75 cmHg. DIN EN ISO 17230:2011-12 EN ISO 17230:2011 (E) 5 8 Test report The test report shall include the following for each test pie

35、ce: a) a reference to this International Standard, i.e. ISO 17230:2006; b) the water penetration pressure, in kPa; c) the mode of failure if this is by formation of damp patches; d) the temperature at which the test was carried out (i.e. 20 C 2 C or 23 C 2 C); e) any deviations from the method speci

36、fied in this International Standard; f) full details for identification of the sample and any deviation from ISO 2418 with respect to sampling. DIN EN ISO 17230:2011-12 EN ISO 17230:2011 (E) 6 Annex A (informative) Source of apparatus One example of a suitable product available commercially is given

37、 below. “R & B Hydrostatic Triple Head Tester”1)manufactured by: R & B Instruments, Unit 3a, Farnley Low Mills, Bangor Terrace, Leeds LS12 5PS, UK. 1) “R & B Hydrostatic Triple Head Tester” is an example of a suitable product available commercially. This information is given for the convenience of users of this International Standard and does not constitute an endorsement by ISO of this product. DIN EN ISO 17230:2011-12 EN ISO 17230:2011 (E) 7