1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Plastics Determination of burning behaviour by oxygen indexPart 1: General requirementsBS EN ISO 4589-1:2017National forewordThis British Standard is the UK implementation of EN ISO 4589-1:2017. It supersedes BS EN ISO
2、4589-1:2000, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/26, Burning behaviour of plastics and rubbers.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to includ
3、e all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 89318 6ICS 83.080.01; 13.220.40Compliance with a British Standard cannot confer immunity from legal obligation
4、s. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2017.Amendments/corrigenda issued since publicationDate Text affected BRITISH STANDARDBS EN ISO 4589-1:2017EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 45891May 2017ICS 13.220
5、.40; 83.080.01 Supersedes EN ISO 4589-1:1999EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCENCENELEC Management Centre: Avenue Marnix 17, B1000 Brussels 2017 CEN Ref. No. EN ISO 4589-1:2017: EAll rights of exploitation in any form and by any means
6、reserved worldwide for CEN national MembersPlastics - Determination of burning behaviour by oxygen index - Part 1: General requirements (ISO 4589-1:2017) Plastiques - Dtermination du comportement au feu au moyen de lindice doxygne - Partie 1: Exigences gnrales (ISO 4589-1:2017) Kunststoffe - Bestimm
7、ung des Brennverhaltens durch den Sauerstoff-Index - Teil 1: Allgemeine Anforderungen (ISO 4589-1:2017) This European Standard was approved by CEN on 20 March 2017.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standa
8、rd 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 official versions (English,
9、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 bodies of Austria, Belgium, Bulgar
10、ia, 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, Slovenia, Spain, Sweden, Switzerla
11、nd, Turkey and United Kingdom.English VersionEN ISO 45891:2017 (E)European forewordThis document (EN ISO 4589-1:2017) has been prepared by Technical Committee ISO/TC 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN.This European St
12、andard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2017 and conflicting national standards shall be withdrawn at the latest by November 2017.Attention is drawn to the possibility that some of the elements o
13、f 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 4589-1:1999.According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following cou
14、ntries 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, Luxembourg, Malta, Netherlands, Norway, P
15、oland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorsement noticeThe text of ISO 4589-1:2017 has been approved by CEN as EN ISO 4589-1:2017 without any modification.iiBS EN ISO 4589-1:2017ISO 45891:2017(E)Foreword ivIntroduction v1 Sco
16、pe . 12 Normative references 13 Terms and definitions . 14 Principles of the test . 25 Applicability of the test 26 Specimen preparation 37 Apparatus . 37.1 General . 37.2 Measuring device 37.3 Column design . 37.4 Sample holder 38 Operating conditions . 38.1 Calibration 38.2 Flame application time
17、48.3 Gas flow . 48.4 Elevated-temperature routine . 48.5 Pass/fail criteria . 49 Conclusions 5Bibliography 6 ISO 2017 All rights reserved iiiContents PageBS EN ISO 4589-1:2017ISO 45891:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national stand
18、ards bodies (ISO member bodies). The work of preparing International Standards is normally carried out 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 orga
19、nizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates 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
20、further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval 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/dire
21、ctives).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 for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the
22、 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 the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO spe
23、cific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the 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 I
24、SO/TC 61, Plastics, Subcommittee SC 4, Burning behaviour.This second edition cancels and replaces the first edition (ISO 4589-1:1996), which has been technically revised.A list of all parts in the ISO 4589 series can be found on the ISO website.iv ISO 2017 All rights reservedBS EN ISO 4589-1:2017ISO
25、 45891:2017(E)IntroductionThe oxygen index (OI) test at ambient temperature was first described by Fenimore and Martin3in 1966. The first use of the method in standards was ASTM D2863:19702and it has since been published in a wide range of national and international standards. It was published as IS
26、O 4589 in 1984 and has now been revised as ISO 4589-2. The OI test at elevated temperatures is described in ISO 4589-3.In the period since ASTM D2863 became a standard, a considerable number of papers have been published about this test. An example is the review in Reference 6 relating to the releva
27、nce of the test to real fire situations. Other papers have suggested empirical formulae relating OI to the amounts of added fire retardant, or describe practical investigations on the equipment performance (see Reference 7). A clear consensus on the value of the two variants of the test has emerged,
28、 however, and it is the purpose of this document to discuss the use of the equipment and the applicability of both test methods. ISO 2017 All rights reserved vBS EN ISO 4589-1:2017This page deliberately left blankPlastics Determination of burning behaviour by oxygen index Part 1: General requirement
29、s1 ScopeThis document specifies the general requirements for the oxygen index (OI) test which are further described in ISO 4589-2 and ISO 4589-3 as follows: ISO 4589-2 describes a method for determining the minimum volume fraction of oxygen in a mixture of oxygen and nitrogen introduced at 23 C 2 C
30、that will just support combustion of a material under specified test conditions; ISO 4589-3 describes methods of carrying out the same determination over a range of temperatures typically between 25 C and 150 C (although temperatures up to 400 C can be used).2 Normative referencesThe following docum
31、ents are referred to in the text in such a way that some or all of their content constitutes requirements 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 4589-2:2017,
32、Plastics Determination of burning behaviour by oxygen index Part 2: Ambient-temperature testISO 4589-3:2017, Plastics Determination of burning behaviour by oxygen index Part 3: Elevated-temperature testISO 13943, Fire safety Vocabulary3 Terms and definitionsFor the purposes of this document, the ter
33、ms and definitions given in ISO 13943 and the following apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp3.1oxygen inde
34、xOIlimiting oxygen indexLOIminimum volume fraction of oxygen in a mixture of oxygen and nitrogen, at 23 C 2 C, that just supports flaming combustion of a material under specified test conditionsNote 1 to entry: It is expressed as a percentage, e.g. OI = 34,6 %.SOURCE: ISO 13943:2008, 4.248, modified
35、 Note 1 to entry has been revised.INTERNATIONAL STANDARD ISO 45891:2017(E) ISO 2017 All rights reserved 1BS EN ISO 4589-1:2017ISO 45891:2017(E)4 Principles of the testIn ISO 4589-2, the material can be tested either as a rigid specimen or as a flexible specimen in a specified holder which is mounted
36、 in a transparent chimney in which a mixture of oxygen and nitrogen flows upwards in a laminar flow pattern. After specimen conditioning, the test is carried out at room temperature. This constitutes the test in its simplest form. In the top-surface ignition procedure, the applied flame is allowed t
37、o impinge on the top surface of the specimen for a maximum time of 30 s coupled with periodic removal of the flame every 5 s to check if the specimen is burning. This also ensures that the specimen temperature does not rise excessively, since this would normally lower the OI value. In the propagatin
38、g-ignition procedure, the flame is allowed to impinge to a depth of approximately 6 mm down the vertical sides of the specimen. In the thin-film procedure, the film is wrapped in a 45 spiral around a rod and taped, after which the rod is withdrawn and the top end of the specimen is cut off at a dist
39、ance of 20 mm from the top.In ISO 4589-3, the material is tested in an identical manner, except that the test takes place in a heated column in which both the incoming gas and the gas passing up the column are heated. At the start of the test, the specimen and specimen holder are preheated in the ga
40、s flow for 240 s 10 s to allow them to reach temperature equilibrium prior to testing. The flame is applied for the same length of time as in ISO 4589-2.5 Applicability of the testThe test is used for the quality control of materials, particularly to check the incorporation of flame retardants in th
41、e material under test, and for research and development. This test is often used for inclusion in material data sheets. This test, in isolation, is insufficient to evaluate the burning behaviour and should not be used for regulations relating to safety control and consumer protection. The test provi
42、des a sensitive measure of burning materials under controlled laboratory conditions. The results are dependent upon the specimen size, shape and orientation. Aside from these restrictions, the OI test is widely used in the polymer industry as well as by cable-manufacturing companies and by those man
43、ufacturing flame retardants.The elevated-temperature test (ISO 4589-3) provides information on the effect of a range of temperatures on the OI value. As a result, the value of the test is different from that of the single-point measurement at room temperature in that it gives an understanding of the
44、 behaviour of materials over a temperature range. This is of particular value in detecting, for example, the potential loss of effectiveness of some added flame retardant or of some technology which has been shown to be significant in certain cases. It is also useful in monitoring any chemical chang
45、es taking place at the higher temperatures which can serve to enhance or reduce the tendency to burn.The flammability temperature test (ISO 4589-3:2017, Annex A) provides a means for assessing the way in which materials behave in a normal atmosphere by determining the temperature at which the OI of
46、a specimen is 20,9 %.ISO 4589-2 and ISO 4589-3 can be used to compare the particular burning characteristics of a series of plastic materials. The burning characteristics of a material are complex, and one test alone is insufficient to evaluate the material behaviour. It should be stressed that a nu
47、mber of tests are required to describe all the burning characteristics of a material.It is essential that these small-scale laboratory tests be regarded as material tests only. They are primarily for assistance in development, monitoring consistency and/or pre-selection of materials, and are not for
48、 use as the sole means of assessing the potential fire hazard of a material in use.The specific requirements of different industries have resulted in the issue of a number of similar standards, but they are not completely identical, often using different burners and conditions of ignition. These dif
49、ferent burners and conditions may give different test results and care should be exercised in comparing results from these tests when conducted in accordance with different standards.2 ISO 2017 All rights reservedBS EN ISO 4589-1:2017ISO 45891:2017(E)6 Specimen preparationSpecimen preparation should always be carried out carefully. It is important to ensure that the surfaces are clean and free from any flaws, as failure to observe these precautions can profoundly affect the burning behaviour. No shortc
