1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Rubber and plastics hoses - Assessment of ozone resistance under dynamic conditionsBS EN ISO 10960:2018National forewordThis British Standard is the UK implementation of EN ISO 10960:2018. It is identical to ISO 10960:2
2、017. It supersedes BS EN ISO 10960:1997, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/66, Rubber and plastics tubing, hoses and hose assemblies.A list of organizations represented on this committee can be obtained on request to its secretary.Thi
3、s publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 96984 3ICS 23.040.70Compliance with a British Standard cannot confer i
4、mmunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 10960:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NO
5、RMEN ISO 10960February 2018ICS 23.040.70 Supersedes EN ISO 10960:1996EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN ISO 10960:2018: EAll rights of exploitation in
6、any form and by any means reserved worldwide for CEN national MembersRubber and plastics hoses - Assessment of ozone resistance under dynamic conditions (ISO 10960:2017)Tuyaux en caoutchouc et en plastique - valuation de la rsistance lozone dans des conditions dynamiques (ISO 10960:2017)Gummi- und K
7、unststoffschluche - Gummi- und Kunststoffschluche - Beurteilung der Ozonbestndigkeit unter dynamischen Bedingungen (ISO 10960:2017)This European Standard was approved by CEN on 5 December 2017.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions fo
8、r 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 Standard exists in three
9、 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 national standards bodie
10、s 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, Serbia, Slovakia, Slove
11、nia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN ISO 10960:2018 (E)European forewordThis document (EN ISO 10960:2018) has been prepared by Technical Committee ISO/TC 45“Rubber and plastics hoses and hose assemblies” in collaboration with Technical Committee CEN/TC 218 “Ru
12、bber and plastics hoses and hose assemblies” the secretariat of which is held by BSI.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 August 2018, and conflicting national standards shall be withdr
13、awn at the latest by August 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.This document supersedes EN ISO 10960:1996.According to the CEN-CENEL
14、EC 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, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Ice
15、land, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorsement noticeThe text of ISO 10960:2017 has been approved by CEN as EN ISO 10960:2018 without any mod
16、ification.2BS EN ISO 10960:2018ISO 10960:2017Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 15 Apparatus . 16 Test pieces . 26.1 Type of test piece 26.2 Number of test pieces . 27 Conditioning of test pieces . 28 Test conditions . 29 Procedure. 210 Test report .
17、 3 ISO 2017 All rights reserved iiiContents PageBS EN ISO 10960:2018ISO 10960:2017ForewordISO (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
18、 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 collaborate
19、s 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 approval crit
20、eria 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 subject of
21、 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 trade name
22、used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to t
23、he World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.This document was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 1, Rubber and plastics hoses and hose assemblies.This se
24、cond edition cancels and replaces the first edition (ISO 10960:1994), of which it constitutes a minor revision. The changes compared to the previous edition are as follows: Clause 2 has been updated: ISO 471 has been deleted and replaced by ISO 23529, and the latest edition of ISO 1431-1 has been ci
25、ted; 5.2 and Clause 7 have been amended to cite the most recent pertinent standards.iv ISO 2017 All rights reservedBS EN ISO 10960:2018Rubber and plastics hoses - Assessment of ozone resistance under dynamic conditions1 ScopeThis document specifies a method of assessing the resistance of hoses to th
26、e deleterious effects of atmospheric ozone under dynamic conditions. It is applicable to hoses with bore diameters up to and including 25 mm.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this docu
27、ment. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 1431-1:2012, Rubber, vulcanized or thermoplastic Resistance to ozone cracking Part 1: Static and dynamic strain testingISO 8330, Ru
28、bber and plastics hoses and hose assemblies VocabularyISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 8330 apply.ISO and IEC maintain terminologic
29、al databases for use in standardization at the following addresses: ISO Online browsing platform: available at http:/www.iso.org/obp IEC Electropedia: available at http:/www.electropedia.org/4 PrincipleThe cover of a hose in a crescent position during reverse bending is exposed to ozone and examined
30、 periodically for cracking.5 ApparatusAll apparatus placed in the test cabinet shall be made from materials which do not absorb or decompose ozone.5.1 Ozone cabinet, with apparatus for generating ozone and monitoring and controlling the ozone concentration as described in ISO 1431-1.5.2 Test piece h
31、older, as shown in Figure 1, with means of carrying out flexing at the required frequency.Details given in ISO 1431-1:2012, 5.6, shall be followed.INTERNATIONAL STANDARD ISO 10960:2017 ISO 2017 All rights reserved 1BS EN ISO 10960:2018ISO 10960:20176 Test pieces6.1 Type of test pieceThe test piece s
32、hall consist of a hose sample with a free length L calculated from the formulaLd=20 where d is the outside diameter of the hose under test.6.2 Number of test piecesTwo test pieces shall be tested.7 Conditioning of test piecesNo test shall be carried out within 24 h of manufacture. For evaluations wh
33、ich are intended to be comparable, the tests shall, as far as possible, be carried out after the same time interval after manufacture. ISO 23529 shall be followed for time between sample manufacture and testing.The test pieces, mounted as described in 9.1, shall be conditioned for 48 h in a substant
34、ially ozone-free atmosphere at standard temperature in accordance with ISO 23529, in darkness or subdued light.8 Test conditionsUnless other conditions are specified in the relevant hose specification, the test pieces shall be exposed in the ozone cabinet to an ozone concentration of (50 5) parts pe
35、r hundred million (pphm) by volume at 40 C 2 C for ()7220h.NOTE It has been found that differences in atmospheric pressure can influence ozone cracking when test pieces are exposed to constant ozone concentrations expressed in parts per hundred million. This effect can be taken into account by expre
36、ssing the ozone content in the ozonized air in terms of partial pressure, i.e. in millipascals, and making comparisons at constant ozone partial pressure. At standard conditions of atmospheric pressure and temperature (101 kPa, 273 K), a concentration of 1 pphm is equivalent to a partial pressure of
37、 1,01 mPa.9 Procedure9.1 Mount the test piece as shown in Figure 1 and place it in the ozone cabinet.9.2 Carry out flexing at a frequency of 0,3 Hz 0,03 Hz and in the test conditions as described in Clause 8.The maximum travel of the piston shall be such that the distance from the lower edge of the
38、piston to the ends of the hose is five times the outside diameter of the hose 2 mm (distance B in Figure 1). During the return stroke, the piston shall return to a position where the hose is completely unloaded.9.3 Test pieces can be examined after periods of exposure of 2 h, 4 h, 24 h, 48 h and 72
39、h, while still mounted in the test apparatus, under x 2 magnification, ignoring the area adjacent to the fixing point. If cracks are discovered, record their nature and the time at which they were first observed.2 ISO 2017 All rights reservedBS EN ISO 10960:2018ISO 10960:2017Dimensions in millimetre
40、sKeyA is 10dB is 5dR is radius of curvature of piston endwhere d is the outside diameter of the hose under test.Figure 1 Mounted test piece10 Test reportThe test report shall include the following information:a) a reference to this document, i.e. ISO 10960:2017;b) all details necessary for the ident
41、ification of the hose tested;c) details of the test conditions, i.e. ozone concentration, temperature and exposure period;d) whether cracks were observed and, if so, their nature and the time the cracks were observed; ande) the date of the test. ISO 2017 All rights reserved 3BS EN ISO 10960:2018This
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