1、September 2011 Translation by DIN-Sprachendienst.English price group 9No 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).I
2、CS 59.140.30!$taJ“1816239www.din.deDDIN EN ISO 17076-2Leather Determination of abrasion resistance Part 2: Martindale ball plate method (ISO 17076-2:2011)English translation of DIN EN ISO 17076-2:2011-09Leder Bestimmung des Abriebwiderstandes Teil 2: Martindale-Kugelplatte-Verfahren (ISO 17076-2:201
3、1)Englische bersetzung von DIN EN ISO 17076-2:2011-09Cuir Dtermination de la rsistance labrasion Partie 2: Mthode Martindale avec plateau billes (ISO 17076-2:2011)Traduction anglaise de DIN EN ISO 17076-2:2011-09Partially supersedesDIN EN 14327:2004-03www.beuth.deDocument comprises pagesIn case of d
4、oubt, the German-language original shall be considered authoritative.1408.11 DIN EN ISO 17076-2:2011-09 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 IULTCS, the Int
5、ernational Union of Leather Technologists and Chemists Societies. 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 Physikalische Prfverfahren fr Leder und seine
6、Ausgangsprodukte. DIN EN ISO 17076 consists of the following parts, under the general title Leather Determination of abrasion resistance: Part 1: Taber method Part 2: Martindale ball plate method The DIN Standards corresponding to the International Standards referred to in this document are as follo
7、ws: ISO 2419 DIN EN ISO 2419 ISO 11641 DIN EN ISO 11641 ISO 12947-1 DIN EN ISO 12947-1 ISO 12947-4 DIN EN ISO 12947-4 Amendments This standard differs from DIN EN 14327:2004-03 as follows: a) the standard has been divided up into two parts; b) Part 2 now contains the “Martindale ball plate method” a
8、s a new test method. Previous editions DIN EN 14327: 2004-03 2 DIN EN ISO 17076-2:2011-09 National Annex NA (informative) Bibliography DIN EN ISO 2419, Leather Physical and mechanical tests Sample preparation and conditioning DIN EN ISO 11641, Leather Tests for colour fastness Colour fastness to per
9、spiration DIN EN ISO 12947-1, Textiles Determination of the abrasion resistance of fabrics by the Martindale method Part 1: Martindale abrasion testing apparatus DIN EN ISO 12947-4, Textiles Determination of abrasion resistance of fabrics by the Martindale method Part 4: Assessment of appearance cha
10、nge 3 DIN EN ISO 17076-2:2011-09 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17076-2 June 2011 ICS 59.140.30 Supersedes EN 14327:2003English Version Leather - Determination of abrasion resistance - Part 2: Martindale ball plate method (ISO 17076-2:2011
11、) Cuir - Dtermination de la rsistance labrasion - Partie 2: Mthode Martindale avec plateau billes (ISO 17076-2:2011) Leder - Bestimmung des Abriebwiderstandes - Teil 2: Martindale-Kugelplatte-Verfahren (ISO 17076-2:2011) This European Standard was approved by CEN on 14 June 2011. CEN members are bou
12、nd 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 the C
13、EN-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 Centre
14、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, Norway,
15、 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 form and
16、 by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17076-2:2011: EContents Page Foreword 3 1 Scope4 2 Normative references4 3 Principle4 4 Apparatus and materials.4 5 Sampling and sample preparation.5 6 Test procedure.6 6.1 Number of tests .6 6.2 Dry testing6 6.3 Test with sy
17、nthetic perspiration solution (optional)7 7 Test report7 Annex A (informative) Examples of breakdowns (photographed with 50 magnification).9 Bibliography10 EN ISO 17076-2:2011 (E) DIN EN ISO 17076-2:2011-09 2.Foreword This document (EN ISO 17076-2:2011) has been prepared by Technical Committee CEN/T
18、C 289 “Leather”, the secretariat of which is held by UNI, in collaboration with the 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 endorsement, at
19、the latest by December 2011, and conflicting national standards shall be withdrawn at the latest by December 2011. 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 an
20、y or all such patent rights. This document supersedes EN 14327:2003. 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,
21、 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. EN ISO 17076-2:2011 (E) DIN EN ISO 17076-2:2011-09 31 Scope This
22、part of ISO 17076 specifies a method of determining the abrasion resistance of upholstery leather for different applications using Martindale apparatus with a ball plate. The method is applicable to semi-aniline, pigmented and coated leather. 2 Normative references The following referenced documents
23、 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 2419, Leather Physical and mechanical tests Sample preparation and conditioning
24、 ISO 11641, Leather Tests for colour fastness Colour fastness to perspiration ISO 12947-1, Textiles Determination of the abrasion resistance of fabrics by the Martindale method Part 1: Martindale abrasion testing apparatus ISO 12947-4, Textiles Determination of the abrasion resistance of fabrics by
25、the Martindale method Part 4: Assessment of appearance change 3 Principle The procedure is based on the method described in ISO 12947-4 and modified to use a ball plate underneath the specimen to better simulate day-to-day use. 4 Apparatus and materials 4.1 Martindale abrasion testing apparatus and
26、materials, in accordance with ISO 12947-1. 4.2 Abrasion holder, diameter 38 mm, in accordance with ISO 12947-1. 4.3 Loading piece, with a mass of (795 7) g (pressure of 12 kPa) in accordance with ISO 12947-1. 4.4 Mounting weight, with a mass of (2,5 0,5) kg, diameter of (120 10) mm in accordance wit
27、h ISO 12947-1. 4.5 Abrading fabric, in accordance with ISO 12947-1, diameter 38 mm. EN ISO 17076-2:2011 (E) DIN EN ISO 17076-2:2011-09 44.6 Felt, in accordance with ISO 12947-1, diameter 140 mm. 4.7 Foam, in accordance with ISO 12947-1, diameter 38 mm. 4.8 Suitable circular sample cutter or press kn
28、ife, with a diameter of approximately 150 mm. 4.9 Ball plate, with 37 steel balls (see Figure 1). Description of ball plate: diameter: 120 mm; thickness: 4,5 mm; material: steel or aluminium; arrangement: one ball in centre; ball diameter: 5,00 mm; ball material: steel; grid spacing: 17 mm. After th
29、e steel balls have been inserted, the whole plate is compressed between two parallel steel plates with approximately 18 kN, to be sure that all balls are exactly inserted at the same height. 4.10 Synthetic perspiration solution, of pH = 8,0 in accordance with ISO 11641, freshly prepared each day. 4.
30、11 Cylindrical vessel, with inside diameter 60 mm to 63 mm and height of at least 30 mm. 4.12 Magnifier, with a magnification of 4 to 6 or a transportable microscope, with magnification of 50. 5 Sampling and sample preparation 5.1 Prior to cutting the test specimens, condition the leather in accorda
31、nce with ISO 2419. 5.2 Cut at least two specimens with a diameter of 150 mm for dry testing in accordance with ISO 2419 using a sample cutter or press knife (4.8). If required, cut at least two additional specimens for testing with synthetic perspiration solution. EN ISO 17076-2:2011 (E) DIN EN ISO
32、17076-2:2011-09 5Dimensions in millimetres Figure 1 Drawings of ball plate 6 Test procedure 6.1 Number of tests The procedure should be performed at least in duplicate. 6.2 Dry testing 6.2.1 Fix the abrading fabric (4.5) backed with the foam (4.7) in the 38 mm abrasion holder (4.2) as described in I
33、SO 12947-4. 6.2.2 The abrasion procedure takes place on the abrading table of the Martindale abrasion apparatus (4.1). Use the following test set-up on the specimen table: felt (4.6), followed by the ball plate (4.9), followed by the leather specimen. Adjust the ball plate with the balls upwards int
34、o the test apparatus so that its grid is aligned parallel to the diagonals of the square of the Lissajous figure (see Figure 2). Fix the leather specimen as described in ISO 12947-4 using the mounting weight (4.4) to ensure that no wrinkles are formed on the specimen surface. Check that the specimen
35、s, ball plate and wool felt are centrally positioned in the clamp of the abrading table. Ensure that the balls stay in the adjusted position after clamping. EN ISO 17076-2:2011 (E) DIN EN ISO 17076-2:2011-09 6Figure 2 Orientation of ball plate relative to the Lissajous figure 6.2.3 Mount the abrasio
36、n holder (4.2) with the abrading fabric (4.5) on the Martindale apparatus. Add the loading piece (4.3) and carry out 100 rubs, as defined in ISO 12947-1. 6.2.4 Remove the abrasion holder with the abrading fabric from the Martindale apparatus and assess the leather surface visually. Note the number o
37、f places of finish breakdowns. A finish breakdown is reached if the finish layer is completely damaged and leather fibres are visible. To ensure assessment results, a magnifier or a portable microscope (4.12) can be used. 6.2.5 Repeat step 6.2.3 and 6.2.4 until 4 or more places of finish breakdown h
38、ave been created. Report the number of rubs necessary to reach 4 places of finish breakdowns. NOTE In order to reduce the time needed for testing, it can be helpful to run a pre-test with 100 rubs without stopping before the first assessment, as leathers with a strong abrasion resistance might need
39、considerably more rubs before their finish collapses in one or more spots. Then continue with 100 rubs. 6.3 Test with synthetic perspiration solution (optional) 6.3.1 Fix the abrading fabric (4.5) backed with the foam (4.7) in the 38 mm abrasion holder (4.2) as described in ISO 12947-4. 6.3.2 Place
40、2 ml of synthetic perspiration solution (4.10) in the cylindrical vessel (4.11). Place the specimen holder in the vessel, with the abrading fabric in contact with the synthetic perspiration solution, for a period of (5 0,5) min. 6.3.3 Follow the procedure described in 6.2.2 to 6.2.5. After 500 rubs
41、each, rewet the abrasion fabric as described in 6.3.2 using a fresh synthetic perspiration solution. 7 Test report The test report shall include the following information: a) a reference to this part of ISO 17076 (i.e. ISO 17076-2:2011); b) a description of the leather tested; c) value of number of
42、rubs necessary to reach 4 or more places of finish breakdowns for dry testing and the corresponding number of places with finish breakdown for each specimen tested; d) mean value of number of rubs necessary to reach 4 places of finish breakdowns for dry testing; e) any deviations from this method. E
43、N ISO 17076-2:2011 (E) DIN EN ISO 17076-2:2011-09 7If the test has been performed with synthetic perspiration solution, report in addition the following information: f) mean value of number of rubs necessary to reach 4 places of finish breakdowns for testing with synthetic perspiration solution; g)
44、synthetic perspiration solution used and its pH. EN ISO 17076-2:2011 (E) DIN EN ISO 17076-2:2011-09 8Annex A (informative) Examples of breakdowns (photographed with 50 magnification) Figure A.1 Photographs of breakdowns EN ISO 17076-2:2011 (E) DIN EN ISO 17076-2:2011-09 9Bibliography 1 ISO 17076-1, Leather Determination of abrasion resistance Part 1: Taber method EN ISO 17076-2:2011 (E) DIN EN ISO 17076-2:2011-09 10
