BS EN ISO 17228-2015 Leather Tests for colour fastness Change in colour with accelerated ageing《皮革 色牢度试验 加速老化中的颜色变化》.pdf

1、BSI Standards PublicationBS EN ISO 17228:2015Leather Tests for colourfastness Change in colourwith accelerated ageingBS EN ISO 17228:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 17228:2015. It supersedes BS ISO 17228:2005 which is withdrawn.The UK pa

2、rticipation in its preparation was entrusted to Technical Committee TCI/69, Footwear, leather and coated fabrics.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract.

3、Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 78782 9ICS 59.140.30Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority

4、 of the Standards Policy and Strategy Committee on 31 March 2015.Amendments/corrigenda issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17228 March 2015 ICS 59.140.30 Supersedes EN ISO 17228:2006English Version Leather - Tests for colour fastness - C

5、hange in colour with accelerated ageing (ISO 17228:2015) Cuir - Essais de solidit des coloris - Changement de couleur avec vieillissement acclr (ISO 17228:2015) Leder - Farbechtheitsprfungen - Farbnderung durch beschleunigtes Altern (ISO 17228:2015) This European Standard was approved by CEN on 3 Ja

6、nuary 2015. 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 references concerning such national standards may be o

7、btained 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 a CEN member into its own language and notified to the

8、 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Irel

9、and, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Cen

10、tre: 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 EBS EN ISO 17228:2015EN ISO 17228:2015 (E) 3 Foreword This document (EN ISO 17228:2015) has been prepared by Technical Commi

11、ttee ISO/TC IULTCS“International Union of Leather Technologists and Chemists Societies” in collaboration with TechnicalCommittee CEN/TC 289 “Leather” the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identica

12、ltext or by endorsement, at the latest by September 2015, and conflicting national standards shall bewithdrawn at the latest by September 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patentrights. CEN and/or CENELEC shall not be held re

13、sponsible 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 followingcountries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, C

14、yprus, CzechRepublic, 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 and the United

15、 Kingdom. Endorsement notice The text of ISO 17228:2015 has been approved by CEN as EN ISO 17228:2015 without any modification. BS EN ISO 17228:2015ISO 17228:2015(E)IULTCS/IUF 412:2015(E) ISO 2015 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Principle 14 Appara

16、tus . 25 Test specimens 26 Ageing by heat alone . 26.1 Principle 26.2 Procedure 37 Ageing by heat and elevated humidity . 47.1 Principle 47.2 Procedure 48 Cyclic variation in heat and elevated humidity 58.1 Principle 58.2 Procedure 59 Test report . 7Annex A (informative) Comments on specific aspects

17、 of the colour-measurement procedure 8Bibliography 9BS EN ISO 17228:2015ISO 17228:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out

18、through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO coll

19、aborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approv

20、al criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the sub

21、ject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trad

22、e name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Tec

23、hnical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationISO 17228 was prepared by the Fastness Tests Commission of the International Union of Leather Technologists and Chemists Societies (IUF Commission, IULTCS) in collaboration with the European Committee for Stand

24、ardization (CEN) Technical Committee CEN/TC 289, Leather, the secretariat of which is held by UNI, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).It is based on IUF 412 published in J. Soc. Leather Tech. Chem., 86 pp. 325-331, 2002, and declared an o

25、fficial method of the IULTCS in May 2003.IULTCS, originally formed in 1897, is a world-wide organization of professional leather societies to further the advancement of leather science and technology. IULTCS has three Commissions, which are responsible for establishing international methods for the

26、sampling and testing of leather. ISO recognizes IULTCS as an international standardizing body for the preparation of test methods for leather.This second edition cancels and replaces the first edition (ISO 17228:2005), which has been technically revised. This new version is a general update of the p

27、rocedures and in Tables 1, 2, and 3 includes additional ageing options.Annex A is informative.IULTCS/IUF 412:2015(E)iv ISO 2015 All rights reservedBS EN ISO 17228:2015INTERNATIONAL STANDARD ISO 17228:2015(E)Leather Tests for colour fastness Change in colour with accelerated ageing1 ScopeThis Interna

28、tional Standard specifies various ageing procedures 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 surrounding

29、s on the leather. The test conditions to be used 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 reference

30、d in this document and are indispensable for its 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

31、 testingISO 105-A02, Textiles Tests for colour 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 th

32、e degree of staining of adjacent fabricsISO 105-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 m

33、echanical tests Sample preparation and conditioningISO 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

34、different temperature and humidity (see Clause 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 pr

35、epare the leather specimen for other physical 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. ISO 2015 Al

36、l rights reserved 1BS EN ISO 17228:2015ISO 17228:2015(E)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 ApparatusUse normal laboratory apparatus and the following:4.1 Oven, fitted with a ce

37、ntral rack, capable of maintaining a temperature within 2 C of the 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 define

38、d temperature and a relative humidity within 5 % of the defined relative 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 assess

39、ing change in colour, complying with ISO 105-A05.4.5 Grey scale for 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

40、leather in accordance with ISO 2419.5.2 Cut out two representative 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 prop

41、erties, such as dimensional change, are to be measured, then additional 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

42、 be involved:a) the change in colour of the substances in the leather;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 procedu

43、re can be used for a variety of purposes, including preparing specimens for other tests.IULTCS/IUF 412:2015(E)2 ISO 2015 All rights reservedBS EN ISO 17228:2015ISO 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 refere

44、nce specimen) in a place where it is protected from light and kept under standard conditions, according to ISO 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 otherwi

45、se, age the specimen under one of the sets of conditions indicated in Table 1.Table 1 Ageing by heatMethod Conditions 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 leather

46、6C 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 leather6E 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 temperature6

47、H 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 leather6K 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

48、 applications. If other conditions are used, then they shall be clearly noted in the test report.6.2.4 After 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 accord

49、ing to ISO 2419 for 24 h.6.2.5 Either visually assess the colour difference between the aged specimen and the 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-A04, (4.5), can be used to assess the grey sca