BS ISO 4665-2016 Rubber vulcanized or thermoplastic Resistance to weathering《硫化和热塑性橡胶 耐气候性》.pdf

1、BSI Standards PublicationBS ISO 4665:2016Rubber, vulcanized orthermoplastic Resistance toweatheringBS ISO 4665:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 4665:2016. It supersedes BS ISO 4665:2006 which is withdrawn. The UK participation in its prepara

2、tion was entrusted to Technical Committee PRI/22, Testing and analysis of rubber.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. Users are responsible for its co

3、rrect application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 89166 3 ICS 83.060 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Stra

4、tegy Committee on 31 January 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 4665:2016 ISO 2016Rubber, vulcanized or thermoplastic Resistance to weatheringCaoutchouc vulcanis ou thermoplastique Rsistance aux intempriesINTERNATIONAL STANDARDISO4665Third edition20

5、16-01-15Reference numberISO 4665:2016(E)BS ISO 4665:2016ISO 4665:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by

6、 any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 4

7、01CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 4665:2016ISO 4665:2016(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 25 Exposure to direct weathering, to weathering using glass-fil

8、tered daylight or to intensified weathering by daylight using Fresnel mirrors . 26 Exposure to laboratory light sources 27 Changes in colour . 37.1 Apparatus 37.1.1 Instrumental assessment . 37.1.2 Visual assessment . 37.2 Test piece . 37.3 Procedure 37.3.1 General 37.3.2 Instrumental assessment . 3

9、7.3.3 Visual assessment . 38 Changes in other appearance properties 39 Changes in physical properties . 39.1 General . 39.2 Apparatus 49.3 Test pieces . 49.4 Procedure 410 Expression of results 410.1 Change in colour 410.1.1 Instrumental measurements . 410.1.2 Visual measurements . 410.2 Changes in

10、other appearance properties . 510.3 Changes in physical properties . 511 Test report . 6Annex A (informative) Weathering reference materials . 7Annex B (informative) Some properties which can be determinedto assess change after exposure 10Bibliography .11 ISO 2016 All rights reserved iiiContents Pag

11、eBS ISO 4665:2016ISO 4665:2016(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 through ISO technical committees. Each member body inter

12、ested 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 collaborates closely with the International Electrotechnical

13、 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 approval criteria needed for the different types of ISO docume

14、nts 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 subject of patent rights. ISO shall not be held responsible

15、 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 trade name used in this document is information given for th

16、e 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 Technical Barriers to Trade (TBT) see the following URL: Fo

17、reword - Supplementary informationThe committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee SC 2, Testing and analysis.This third edition cancels and replaces the second edition (ISO 4665:2006), which has been technically revised with the following changes: n

18、ormative references have been updated, small editorial changes made for clarification and compression set added to mechanical properties that could be measured.iv ISO 2016 All rights reservedBS ISO 4665:2016ISO 4665:2016(E)IntroductionA number of different exposure techniques can be used to provide

19、information on the effects of environmental stresses such as light, heat, and water on rubbers. Each of these has its own particular application and relevance. Explanation of, and guidance on, methods for exposure to natural and artificial weathering is given in ISO 877-1 and ISO 4892-1. Particular

20、guidance on exposure to determine resistance to ozone is given in ISO 1431-1. The methods for exposure to weathering standardized for plastic materials are essentially suitable for rubbers, and hence this International Standard refers to the relevant ISO standards for plastics for the apparatus and

21、procedures.It is desirable that the procedures for the determination of changes in properties are the same whatever exposure is used and that the results should be expressed in a uniform manner. Such procedures are specified in this International Standard.Exposure to weathering alters the properties

22、 of the material, particularly in the surface layer. The test method used to determine changes in properties should be selected after consideration of the properties of the material which are important in its proposed application and taking into account the fact that degradation might be concentrate

23、d at the surface layer. The methods chosen ought to be capable of measuring change in properties with sufficient precision within the ranges which are important in practice, so as to provide significant criteria of change. ISO 2016 All rights reserved vBS ISO 4665:2016BS ISO 4665:2016Rubber, vulcani

24、zed or thermoplastic Resistance to weathering1 ScopeThis International Standard specifies methods for the exposure of vulcanized or thermoplastic rubbers to natural or artificial weathering and methods for the determination of changes in colour, appearance, and physical properties resulting from exp

25、osure.2 Normative referencesThe following documents, in whole or in part, are normatively referenced 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

26、amendments) applies.ISO 105-A02, Textiles Tests for colour fastness Part A02: Grey scale for assessing change in colourISO 877-1:2009, Plastics Methods of exposure to solar radiation Part 1: General guidanceISO 877-2:2009, Plastics Methods of exposure to solar radiation Part 2: Direct weathering and

27、 exposure behind window glassISO 877-3:2009, Plastics Methods of exposure to solar radiation Part 3: Intensified weathering using concentrated solar radiationISO 1431-1, Rubber, vulcanized or thermoplastic Resistance to ozone cracking Part 1: Static and dynamic strain testingISO 4892-1, Plastics Met

28、hods of exposure to laboratory light sources Part 1: General guidanceISO 4892-2, Plastics Methods of exposure to laboratory light sources Part 2: Xenon-arc lampsISO 4892-3, Plastics Methods of exposure to laboratory light sources Part 3: Fluorescent UV lampsISO 4892-4, Plastics Methods of exposure t

29、o laboratory light sources Part 4: Open-flame carbon-arc lampsISO 18314-1, Analytical colorimetry Part 1: Practical colour measurementISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods3 Terms and definitionsFor the purposes of this document, the

30、 terms and definitions given in ISO 877 and ISO 4892 and the following apply.3.1controlmaterial exposed alongside the test material for comparisonNote 1 to entry: The control, for example, may be a material of similar or related composition to the test material or a material having a known response

31、to the exposure conditions.INTERNATIONAL STANDARD ISO 4665:2016(E) ISO 2016 All rights reserved 1BS ISO 4665:2016ISO 4665:2016(E)3.2file test pieceportion of the material to be tested which is stored under conditions in which it is stable and is used for comparison between the exposed and the origin

32、al state3.3masked areaportion of the exposed test piece which is protected from light exposure by masking3.4weathering reference materialreference material whose weathering degradation properties are well documented and repeatable when exposed to identical conditions3.5exposure stageinterval of expo

33、sure between determinations of change in properties, expressed as time or radiant exposure4 PrincipleTest pieces are exposed to natural or artificial weathering and the resulting changes in colour, appearance, and selected physical properties are determined.5 Exposure to direct weathering, to weathe

34、ring using glass-filtered daylight or to intensified weathering by daylight using Fresnel mirrorsCarry out the exposure in accordance with the relevant method of ISO 877, with the following additions and modifications: For tests under strain, prepare the test pieces and place them under strain in ac

35、cordance with ISO 1431-1. It is recommended that one or more of the weathering reference materials described in Annex A be used as a control, the material selected depending on the type of rubber compound under test. The effects of natural weathering on these materials in a range of climates are det

36、ailed in Reference 1 and Reference 2. Condition the test pieces in accordance with ISO 23529.6 Exposure to laboratory light sourcesCarry out the exposure in accordance with ISO 4892-1 and, as relevant, ISO 4892-2, ISO 4892-3, or ISO 4892-4, with the following additions and modifications:For tests un

37、der strain, prepare the test pieces and place them under strain in accordance with ISO 1431-1.It is recommended that one or more of the weathering reference materials described in Annex A be used as a control, the material selected depending on the type of rubber compound under test. The effects of

38、natural weathering on these materials in a range of climates are detailed in Reference 1 and Reference 2.Condition the test pieces in accordance with ISO 23529.NOTE 1 The general guidance on weathering of plastics given in ISO 4892-1 is applicable to rubbers.NOTE 2 In general, an open-flame carbon-a

39、rc lamp is not recommended because it is not representative of sunlight.2 ISO 2016 All rights reservedBS ISO 4665:2016ISO 4665:2016(E)7 Changes in colour7.1 Apparatus7.1.1 Instrumental assessmentUse a colour or colour change apparatus meeting the requirements described in ISO 18314-1.7.1.2 Visual as

40、sessmentUse the grey scale in accordance with ISO 105-A02.7.2 Test pieceThe test piece shall be in any form which allows sufficient flat area for the determination of colour change.NOTE It is convenient to use a test piece required for the determination of change in physical properties.7.3 Procedure

41、7.3.1 GeneralThe choice of instrumental or visual assessment of colour change shall be made by agreement between the interested parties.7.3.2 Instrumental assessmentMeasure the colour of the test piece before and after each exposure stage in general accordance with ISO 18314-1. If required, also mea

42、sure the colour of a file test piece or a masked area.7.3.3 Visual assessmentCompare the contrast rating of the exposed test piece and an unexposed file test piece, and if required, a masked area, after each exposure stage, in accordance with the procedure given in ISO 105-A02.8 Changes in other app

43、earance propertiesExamine each test piece visually after each exposure stage for changes in appearance using, if appropriate, the procedure given in a relevant International Standard. Some examples of parameters used to assess change in appearance are listed in Annex B.Ozone cracking shall be assess

44、ed in accordance with ISO 1431-1.NOTE Cracking or crazing in rubber test pieces exposed outdoors can result from light ageing as well as from ozone attack. A distinction is not always possible, particularly with light-coloured rubbers. Sunlight crazing is characterized by shallow cracks and usually

45、occurs independently of strain, whereas a threshold strain has to be exceeded for ozone cracking to occur. Where there is doubt, it is useful to expose an unstrained test piece alongside the strained test piece for comparison.9 Changes in physical properties9.1 GeneralThe properties measured may be

46、those specified in an International Standard for the material or as agreed between the interested parties. Some suitable properties are listed in Annex B. ISO 2016 All rights reserved 3BS ISO 4665:2016ISO 4665:2016(E)9.2 ApparatusApparatus in accordance with the relevant International Standard for t

47、he determination of the properties shall be used.9.3 Test piecesTest pieces shall comply with the requirements of the relevant International Standard for the determination of the properties chosen.Test pieces may be cut from an exposed sheet of material. In such cases, the test pieces shall be taken

48、 not less than 20 mm from any fixtures holding the material or from supports that are not intended to simulate the conditions of exposure of the material in service. In no circumstances shall any of the material be removed from the exposed face during test piece preparation.9.4 ProcedureCondition th

49、e test pieces and carry out the property determination in accordance with the procedure given in the relevant International Standard. Determine the initial properties on unexposed test pieces and the properties of exposed test pieces after each exposure stage. If required, also determine the properties of file test pieces or masked areas.Repeat the measurements carried out on the sample test pieces on test pieces from any control being used.NOTE With some tests, the results will depend on which side