1、February 2013 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).IC
2、S 59.140.30!$RC“1944732www.din.deDDIN EN ISO 11641Leather Tests for colour fastness Colour fastness to perspiration (ISO 11641:2012);English version EN ISO 11641:2012,English translation of DIN EN ISO 11641:2013-02Leder Farbechtheitsprfungen Farbechtheit gegen Schwei (ISO 11641:2012);Englische Fassu
3、ng EN ISO 11641:2012,Englische bersetzung von DIN EN ISO 11641:2013-02Cuir Essais de solidit des coloris Solidit des coloris la sueur (ISO 11641:2012);Version anglaise EN ISO 11641:2012,Traduction anglaise de DIN EN ISO 11641:2013-02SupersedesDIN EN ISO 11641:2004-01www.beuth.deDocument comprises 14
4、 pagesIn case of doubt, the German-language original shall be considered authoritative.02.13DIN EN ISO 11641:2013-02 2 A comma is used as the decimal marker. National foreword This document (EN ISO 11641:2012) has been prepared by Technical Committee CEN/TC 289 “Leather” (Secretariat: UNI, Italy) in
5、 collaboration with the International Union of Leather Technologists and Chemists Societies (IULTCS). This document is based on IUF 426. The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-05
6、-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 105-A01 DIN EN ISO 105-A01 ISO 105-A02 DIN EN 20105-A02 ISO 105-A03 DIN EN 20105-A03 ISO 105-A04 DI
7、N EN ISO 105-A04 ISO 105-A05 DIN EN ISO 105-A05 ISO 105-E04 DIN ISO 105-E04 ISO 2418 DIN EN ISO 2418 ISO 3696:1987 DIN ISO 3696:1991-06 Amendments This standard differs from DIN EN ISO 11641:2004-01 as follows: a) the standard has been editorially revised; b) the procedure has been technically updat
8、ed; c) Subclause 4.6 “Acid artificial perspiration solution” has been added; d) Subclause 7.2 has been added allowing the instrumental assessment of the grey scale staining; e) Clause 8 “Precision” has been added. Previous editions DIN EN ISO 11641: 2004-01 DIN EN ISO 11641:2013-02 3 National Annex
9、NA (informative) Bibliography DIN EN 20105-A02, Textiles Tests for colour fastness Part A02: Grey scale for assessing change in colour DIN EN 20105-A03, Textiles Tests for colour fastness Part A03: Grey scale for assessing staining DIN EN ISO 105-A01, Textiles Tests for colour fastness Part A01: Gen
10、eral principles of testing DIN EN ISO 105-A04, Textiles Tests for colour fastness Part A04: Method for the instrumental assessment of the degree of staining of adjacent fabrics DIN EN ISO 105-A05, Textiles Tests for colour fastness Part A05: Instrumental assessment of change in colour for determinat
11、ion of grey scale rating DIN EN ISO 105-E04, Textiles Tests for colour fastness Part E04: Colour fastness to perspiration DIN EN ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location DIN ISO 3696:1991-06, Water for analytical laboratory use Specification and test m
12、ethods DIN EN ISO 11641:2013-02 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11641 November 2012 ICS 59.140.30 Supersedes EN ISO 11641:2003English Version Leather - Tests for colour fastness - Colour fastness to perspiration (ISO 11641:2012) Cuir - Essa
13、is de solidit des coloris - Solidit des coloris la sueur (ISO 11641:2012) Leder - Farbechtheitsprfungen - Farbechtheit gegen Schwei (ISO 11641:2012) This European Standard was approved by CEN on 14 November 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipula
14、te 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 CEN-CENELEC Management Centre or to any CEN member. This European Sta
15、ndard 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 has the same status as the official versions. CEN members are the na
16、tional standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, S
17、lovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserve
18、d worldwide for CEN national Members. Ref. No. EN ISO 11641:2012: EContents Page Foreword . 3 1 Scope 4 2 Normative references 4 3 Principle . 5 4 Apparatus and materials. 5 5 Test specimens 7 6 Procedure . 7 7 Evaluation 8 8 Precision 8 9 Test report 8 Annex A (informative) Commercial sources for a
19、pparatus and materials 9 Bibliography 10 EN ISO 11641:2012 (E) DINEN ISO 11641:2013-022Foreword This document (EN ISO 11641:2012) has 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 Technolog
20、ists 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 the latest by May 2013, and conflicting national standards shall be withdrawn at the latest by May 2013. Attention is drawn to the po
21、ssibility 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 ISO 11641:2003. According to the CEN/CENELEC Internal Regulations, the national standa
22、rds organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Lux
23、embourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 11641:2012 has been approved by CEN as a EN ISO 11641:2012 without any modification. EN ISO 11641:2012 (E) DINEN ISO 11641
24、:2013-023 1 Scope This International Standard specifies a method for determining the colour fastness to perspiration of leather of all kinds at all stages of processing. It applies particularly to gloving, clothing and lining leathers, as well as leather for the uppers of unlined shoes. The method u
25、ses an artificial perspiration solution to simulate the action of human perspiration. Since perspiration varies widely from one individual to the next, it is not possible to design a method with universal validity, but the alkaline artificial perspiration solution specified in this International Sta
26、ndard will give results corresponding to those with natural perspiration in most cases. NOTE In general, human perspiration is weakly acidic when freshly produced. Micro-organisms then cause it to change, the pH usually becoming weakly alkaline (pH 7,5 to 8,5). Alkaline perspiration has a considerab
27、ly greater effect on the colour of leather than has acid perspiration. Therefore, for coloured leather, an alkaline perspiration solution is used to simulate the most demanding conditions encountered in practice. 2 Normative references The following referenced documents are indispensable for the app
28、lication 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 105-A01, Textiles Tests for colour fastness Part A01: General principles of testing ISO 105-A02, Textiles Tes
29、ts for colour fastness Part A02: Grey scale for assessing change in colour ISO 105-A03, Textiles Tests for colour fastness Part A03: Grey scale for assessing staining ISO 105-A04, Textiles Tests for colour fastness Part A04: Method for the instrumental assessment of the degree of staining of adjacen
30、t fabrics ISO 105-A05, Textiles Tests for colour fastness Part A05: Instrumental assessment of change in colour for determination of grey scale rating ISO 105-E04, Textiles Tests for colour fastness Part E04: Colour fastness to perspiration ISO 105-F01, Textiles Tests for colour fastness Part F01: S
31、pecification for wool adjacent fabric ISO 105-F02, Textiles Tests for colour fastness Part F02: Specification for cotton and viscose adjacent fabrics ISO 105-F03, Textiles Tests for colour fastness Part F03: Specification for polyamide adjacent fabric ISO 105-F04, Textiles Tests for colour fastness
32、Part F04: Specification for polyester adjacent fabric EN ISO 11641:2012 (E) DINEN ISO 11641:2013-024ISO 105-F05, Textiles Tests for colour fastness Part F05: Specification for acrylic adjacent fabric ISO 105-F06, Textiles Tests for colour fastness Part F06: Specification for silk adjacent fabric ISO
33、 105-F07, Textiles Tests for colour fastness Part F07: Specification for secondary acetate adjacent fabric ISO 105-F10, Textiles Tests for colour fastness Part F10: Specification for adjacent fabric: Multifibre ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location
34、ISO 3696:1987, Water for analytical laboratory use Specification and test methods 3 Principle A leather specimen is soaked in artificial perspiration solution and a piece of adjacent fabric, also soaked in artificial perspiration solution, is laid against each side to be tested. The composite specim
35、en is left under pressure for a specified time in a suitable apparatus. The leather specimen and adjacent fabric are then dried, and the change in colour of the specimen and the staining of the adjacent fabric assessed with the grey scales. Leathers with a finish may be tested intact or with the fin
36、ish broken. The general colour fastness testing principles shall be in accordance with those described in ISO 105-A01, taking into account that the substrate is leather. 4 Apparatus and materials Ordinary laboratory apparatus and 4.1 Test apparatus, consisting of a stainless-steel frame, into which
37、a rectangular weight-piece approximately 5 kg in mass and approximately 115 mm 60 mm in cross-section fits accurately, so that a uniform pressure of 12,5 1,0 kPa can be applied on the composite specimen placed between rectangular plates of an inert material, e.g. glass or acrylic-resin, of the same
38、length and width as the weight-piece and about 1,5 mm thick. The test apparatus shall be constructed so that if the weight-piece is removed during the tests, the pressure of 12,5 kPa remains unchanged. Other devices may be used provided that equivalent results are obtained. NOTE An example of a suit
39、able apparatus available commercially is given in Annex A. 4.2 Oven, maintained at 37 C 2 C. 4.3 Adjacent fabrics (see ISO 105-A01). Either a) a multifibre adjacent fabric, complying with ISO 105-F10, measuring approximately 100 mm 40 mm, or b) two single-fibre adjacent fabrics, complying with the r
40、elevant specification in ISO 105-F01 to F07. NOTE Examples of suitable commercial sources are given in Annex A. 4.4 Demineralized water, grade 3 in accordance with ISO 3696:1987. 4.5 Alkaline artificial perspiration solution, containing, per litre of solution: EN ISO 11641:2012 (E) DINEN ISO 11641:2
41、013-025 5,0 g of sodium chloride NaCl, 5,0 g of tris(hydroxymethyl)aminomethane NH2C(CH2OH)3, 0,5 g of urea CO(NH2)2 and 0,5 g of nitrilotriacetic acid N(CH2COOH)3 (SAFETY NOTE Not to be ingested), and adjusted to pH 8,0 0,1 with hydrochloric acid (2 mol/l). SAFETY NOTE This artificial perspiration
42、solution must not be ingested. It must not be pipetted by mouth. To prepare 1 litre of alkaline perspiration solution, dissolve the weighed-out components in about 900 ml of demineralized water (4.4) in a 2 litre beaker. Transfer to a 1 litre volumetric flask (4.14) and make up to volume with demine
43、ralized water. Check the pH of this solution with a pH meter (4.13) and add 2 mol/l hydrochloric acid solution (4.15) drop by drop until the pH reaches 8,0 0,1. Smaller volumes can be prepared as required. Check the pH of the solution periodically and discard it if the pH is not within 8,0 0,1. Also
44、 discard the solution if colonies of microbes become visible. NOTE The composition of this pH 8,0 alkaline perspiration solution differs from that specified in the textile method, ISO 105-E04. Typically, leather test laboratories are small and this perspiration solution can be kept for some weeks wi
45、thout changes in the pH. Whereas, the ISO 105-E04 alkaline perspiration solution is not pH stable and a fresh solution must be prepared each day. Experience has shown that for colour fastness testing of leather the most important aspect in making artificial perspiration solutions is the pH and not t
46、he composition. 4.6 Acid artificial perspiration solution, if required, composition according to ISO 105-E04. A freshly prepared solution using demineralized water (4.4), containing, per litre: 0,5 g of L-histidine monohydrochloride monohydrate C6H9O2N3HClH2O; 5,0 g of sodium chloride NaCl; 2,2 g of
47、 sodium dihydrogen orthophosphate dihydrate NaH2PO42H2O. While stirring, the solution is brought to pH 5,5 0,2 with the drop-wise addition of a 0,1 mol/l sodium hydroxide. This solution shall be freshly prepared each day. NOTE Since the leather dyes are fixed under acid conditions, the colour fastne
48、ss to acid perspiration has much less significance for leather compared with the colour fastness to alkaline perspiration. However, the acid perspiration solutions are often used in other test procedures and therefore are included here. For example, these are used to extract substances, such as heavy metals in ISO 17072-1, from leather. 4.7 Fine-grained adhesive paper, grade P 180. 4.8 Grey scale for assessing staining, in accordance with ISO 105-A03. 4.9 Grey scale for assessing change in colour, in accordance with ISO 105-A02. 4.10 Spectrophotometer or co
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