1、June 2015Translation by DIN-Sprachendienst.English price group 11No 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 59
2、.140.30!%C3“2321688www.din.deDDIN EN ISO 17228Leather Tests for colour fastness Change in colour with accelerated ageing (ISO 17228:2015);English version EN ISO 17228:2015,English translation of DIN EN ISO 17228:2015-06Leder Farbechtheitsprfungen Farbnderung durch beschleunigtes Altern (ISO 17228:20
3、15);Englische Fassung EN ISO 17228:2015,Englische bersetzung von DIN EN ISO 17228:2015-06Cuir Essais de solidit des coloris Changement de couleur avec vieillissement acclr (ISO 17228:2015);Version anglaise EN ISO 17228:2015,Traduction anglaise de DIN EN ISO 17228:2015-06SupersedesDIN EN ISO 17228:20
4、06-09www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 16 pages05.15 DIN EN ISO 17228:2015-06 2 A comma is used as the decimal marker. National foreword This document (EN ISO 17228:2015) has been prepared by Technical Committee ISO/TC “In
5、ternational Union of Leather Technologists and Chemists Societies (IULTCS)” in collaboration with the Technical Committee CEN/TC 289 “Leather” (Secretariat: UNI, Italy). The responsible German body involved in its preparation was the DIN-Normenausschuss Materialprfung (DIN Standards Committee Materi
6、als Testing), Working Committee NA 062-05-51 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 IS
7、O 105-A03 DIN EN 20105-A03 ISO 105-A04 DIN EN ISO 105-A04 ISO 105-A05 DIN EN ISO 105-A05 ISO 105-J01 DIN EN ISO 105-J01 ISO 105-J03 DIN EN ISO 105-J03 ISO 2418 DIN EN ISO 2418 ISO 2419 DIN EN ISO 2419 ISO 17130 DIN EN ISO 17130 Amendments This standard differs from DIN EN ISO 17228:2006-09 as follow
8、s: a) the scope of the standard has been extended; b) in Table 1, methods 6H, 6J and 6K have been added; c) in Table 2, methods 7F, 7G, 7H and 7J have been added; d) in Table 3, methods 8D and 8E have been added; e) the standard has been editorially revised. Previous editions DIN EN ISO 17228: 2006-
9、09 DIN EN ISO 17228:2015-06 3 National Annex 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, Tex
10、tiles Tests for colour fastness Part A01: General principles of testing DIN EN ISO 105-A04, Textiles Tests for colour fastness Part A04: Method for the instrumental assess-ment of the degree of staining of adjacent fabrics DIN EN ISO 105-A05, Textiles Tests for colour fastness Part A05: Instrumental
11、 assessment of change in colour for determination of grey scale rating DIN EN ISO 105-J01, Textiles Tests for colour fastness Part J01: General principles for measurement of surface colour DIN EN ISO 105-J03, Textiles Tests for colour fastness Part J03: Calculation of colour differences DIN EN ISO 2
12、418, 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 17130, Leather Physical and mechanical tests Determination of dimensional change DIN EN ISO 17228:2015-06 4 This p
13、age is intentionally blank EN ISO 17228March 2015 ICS 59.140.30 Supersedes EN ISO 17228:2006English Version Leather - Tests for colour fastness - Change in colour with accelerated ageing (ISO 17228:2015) Cuir - Essais de solidit des coloris - Changement de couleur avec vieillissement acclr (ISO 1722
14、8:2015) Leder - Farbechtheitsprfungen - Farbnderung durch beschleunigtes Altern (ISO 17228:2015) This European Standard was approved by CEN on 3 January 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard th
15、e 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 Standard exists in three official versions (English, Fren
16、ch, 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 national standards bodies of Austria, Belgium, Bulgaria,
17、 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey
18、and United Kingdom. CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17228:2015 EEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEUROPEAN COMMITTEE FOR STANDAR
19、DIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGContentsPage Foreword . 3 1 Scope . 4 2 Normative references. 4 3 Principle 4 4 Apparatus 5 5 Test specimens 5 6 Ageing by heat alone . 5 6.1 Principle 5 6.2 Procedure 6 7 Ageing by heat and elevated humidity . 7 7.1 Principle 7 7.2
20、 Procedure 7 8 Cyclic variation in heat and elevated humidity . 8 8.1 Principle 8 8.2 Procedure 8 9 Test report . 10 Annex A (informative) Comments on specific aspects of the colour-measurement procedure . 11 Bibliography 12 2DIN EN ISO 17228:2015-06 EN ISO 17228:2015 (E) Foreword This document (EN
21、ISO 17228:2015) has been prepared by Technical Committee ISO/TC IULTCS “International Union of Leather Technologists and Chemists Societies” in collaboration with Technical Committee CEN/TC 289 “Leather” the secretariat of which is held by UNI. This European Standard shall be given the status of a n
22、ational standard, either by publication of an identical text or by endorsement, at the latest by September 2015, and conflicting national standards shall be withdrawn at the latest by September 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject
23、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 17228:2006. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this
24、 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, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia
25、, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17228:2015 has been approved by CEN as EN ISO 17228:2015 without any modification. 3DIN EN ISO 17228:2015-06EN ISO 17228:2015 (E)1 ScopeThis International Standard specifies various ageing proce
26、dures to obtain an indication of the changes that could occur when leather is exposed to a certain environment for a prolonged time. Over time, the surface colour of leather and the leather itself change due to ageing and to the action of the surroundings on the leather. The test conditions to be us
27、ed depend on the type of leather and its intended use.This procedure can also be used to age specimens for the test of dimensional change according to ISO 17130.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for i
28、ts application. 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 testingISO 105-A02, Textiles Tests for colour
29、 fastness Part A02: Grey scale for assessing change in colourISO 105-A03, Textiles Tests for colour fastness Part A03: Grey scale for assessing stainingISO 105-A04, Textiles Tests for colour fastness Part A04: Method for the instrumental assessment of the degree of staining of adjacent fabricsISO 10
30、5-A05, Textiles Tests for colour fastness Part A05: Instrumental assessment of change in colour for determination of grey scale ratingISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling locationISO 2419, Leather Physical and mechanical tests Sample preparation and conditi
31、oningISO 17130, Leather Physical and mechanical tests Determination of dimensional change3 PrincipleA test specimen of leather is exposed to at least one of the three following conditions: heat (see Clause 6); heat and humidity (see Clause 7); cycles of different temperature and humidity (see Clause
32、 8).One or more of these procedures may take place simultaneously. The change in colour of the specimen is assessed with the standard grey scale and, if applicable, any changes in the finish or appearance are noted.These procedures can also be used to prepare the leather specimen for other physical
33、or fastness tests after accelerated ageing. The assessment of dimension change is described in ISO 17130.NOTE Accelerated ageing tests are for guidance only and they are not necessarily representative of long term use at ambient temperatures.4DIN EN ISO 17228:2015-06 EN ISO 17228:2015 (E) The genera
34、l colour fastness testing principles shall be in accordance with those described in ISO 105-A01, taking into account that the substrate is leather.4 ApparatusUse normal laboratory apparatus and the following:4.1 Oven, fitted with a central rack, capable of maintaining a temperature within 2 C of the
35、 defined temperature. The oven should have a vent, preferably with a circulating fan, and an inside made of inert materials.4.2 Climate chamber, fitted with a central rack, capable of maintaining a temperature within 2 C of the defined temperature and a relative humidity within 5 % of the defined re
36、lative humidity.4.3 Suitable system for holding the specimen and preventing contact with the oven or climate chamber sides.4.4 Grey scale for assessing change in colour, complying with ISO 105-A02, or an instrumental system for assessing change in colour, complying with ISO 105-A05.4.5 Grey scale fo
37、r assessing staining, complying with ISO 105-A03, or an instrumental system for assessing staining, complying with ISO 105-A04.4.6 Stop clock, readable to 1 s.5 Test specimens5.1 Prior to cutting out specimens, condition the piece of leather in accordance with ISO 2419.5.2 Cut out two representative
38、 test specimens measuring not less than 100 mm 100 mm.If the piece of leather available for testing is a whole hide or skin, then the specimens shall be taken in accordance with standard procedures given in ISO 2418.NOTE If other properties, such as dimensional change, are to be measured, then addit
39、ional test specimens are used due to different kind of storage during the ageing step.6 Ageing by heat alone6.1 PrincipleThe purpose of this procedure is to simulate ageing by the application of heat. Two different types of change can be involved:a) the change in colour of the substances in the leat
40、her;b) the evaporation of volatile substances or the migration of substances, leading to a change in the colour and/or other properties of the leather or finish.As both the exposure time and the temperature can be varied, this procedure can be used for a variety of purposes, including preparing spec
41、imens for other tests.5DIN EN ISO 17228:2015-06EN ISO 17228:2015 (E)6.2 Procedure6.2.1 Pre-heat the oven (4.1) to the desired temperature (see 6.2.3).6.2.2 Place one test specimen (the reference specimen) in a place where it is protected from light and kept under standard conditions, according to IS
42、O 2419.6.2.3 Hang the other test specimen with a clip from, or place it on, the holder (4.3) in the middle of the oven such that the air has free access to both sides.Unless specified otherwise, age the specimen under one of the sets of conditions indicated in Table 1.Table 1 Ageing by heatMethod Co
43、nditions for ageing by heat Recommended use6A 24 h 1 h at 60 C 2 C General-purpose ageing conditions6B 24 h 1 h at 100 C 2 CSpecifically for yellowing of individual products in undyed leather6C 72 h 2 h at 60 C 2 C Extended general-purpose ageing6D 72 h 2 h at 100 C 2 C Ageing of automotive leather6
44、E 168 h 2 h at 90 C 2 C Extended ageing of automotive leather6F 168 h 2 h at 60 C 2 C Extended ageing at moderate temperature6G 168 h 2 h at 100 C 2 C Extended ageing at elevated temperature6H 4 h 0,2 h at 100 C 2 C Short ageing of automotive leather6J 144 h 2 h at 100 C 2 C Ageing of automotive lea
45、ther6K 168 h 2 h at 120 C 2 CExtended ageing of automotive leather at high temperatureThe sets of conditions given in Table 1 have been selected to provide a range of conditions for different applications. If other conditions are used, then they shall be clearly noted in the test report.6.2.4 After
46、the period of time has elapsed, remove the test specimen from the oven. Allow the specimen to cool. Then, recondition both the test and the reference specimen under standard conditions according to ISO 2419 for 24 h.6.2.5 Either visually assess the colour difference between the aged specimen and the
47、 reference specimen using the appropriate grey scale in accordance with ISO 105-A02, (4.4) or alternatively, assess the grey scale colour difference instrumentally in accordance with ISO 105-A05, (4.4). If required, e.g. for light coloured leathers, ISO 105-A03, (4.5), or instrumentally with ISO 105
48、-A04, (4.5), can be used to assess the grey scale colour difference.NOTE In the case of undyed leather, the change in colour is often referred to as yellowing. See Annex A for further details.6.2.6 If required, compare the aged specimen with the reference specimen and note any visually apparent chan
49、ges in appearance, hue, or shrinkage and comment on any change in flexibility as assessed manually.6DIN EN ISO 17228:2015-06 EN ISO 17228:2015 (E) 7 Ageing by heat and elevated humidity7.1 PrincipleThis procedure is similar to the application of heat, but the moisture present acts as a mild hydrolysing agent, thus simulating ageing a
