1、Plastics Determination of burning behaviour by oxygen indexPart 2: Ambient-temperature testBS EN ISO 4589-2:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis British Standard is the UK implementation of EN ISO 4589-2:2017. It supersedes BS EN
2、ISO 4589-2:1999, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/26, Burning behaviour of plastics and rubbers.A list of organizations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 in
3、clude 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 89319 3ICS 13.220.40; 83.080.01Compliance with a British Standard cannot confer immunity from legal obliga
4、tions.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 4589-2:2017EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 45892May 2017ICS 13.
5、220.40; 83.080.01 Supersedes EN ISO 4589-2:1999EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCENCENELEC Management Centre: Avenue Marnix 17, B1000 Brussels 2017 CEN Ref. No. EN ISO 4589-2:2017: EAll rights of exploitation in any form and by any mea
6、ns reserved worldwide for CEN national MembersPlastics - Determination of burning behaviour by oxygen index - Part 2: Ambient-temperature test (ISO 4589-2:2017) Plastiques - Dtermination du comportement au feu au moyen de lindice doxygne - Partie 2: Essai la temprature ambiante (ISO 4589-2:2017) Kun
7、ststoffe - Bestimmung des Brennverhaltens durch den Sauerstoff-Index - Teil 2: Prfung bei Umgebungstemperatur (ISO 4589-2:2017) This European Standard was approved by CEN on 13 March 2017.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giv
8、ing 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 offi
9、cial 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 bodies of
10、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, Slovenia,
11、Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN ISO 45892:2017 (E)European forewordThis document (EN ISO 4589-2:2017) 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
12、 by NBN.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 November 2017 and conflicting national standards shall be withdrawn at the latest by November 2017.Attention is drawn to the possibility tha
13、t some of the elements of 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 4589-2:1999.According to the CEN-CENELEC Internal Regulations, the national standards organizati
14、ons 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, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta
15、, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorsement noticeThe text of ISO 4589-2:2017 has been approved by CEN as EN ISO 4589-2:2017 without any modification.iiBS EN ISO 4589-2:2017ISO 45892:2017(E)Forewo
16、rd vIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 25 Apparatus . 25.1 Test chimney . 25.2 Test specimen holder. 25.3 Gas supplies . 65.4 Gas control devices 75.5 Oxygen analyser . 75.6 Flame igniter . 75.7 Timing device . 75.8 Fume extraction system 85.9 To
17、ol for preparing rolled film . 86 Calibration of equipment. 87 Preparation of test specimens 87.1 Sampling . 87.2 Test specimen dimensions and preparation . 97.3 Marking of test specimens . 117.3.1 General. 117.3.2 Marks for testing by top surface ignition .117.3.3 Marks for testing by propagating i
18、gnition 117.4 Conditioning . 118 Procedure for determination of oxygen index .128.1 General 128.2 Setting up the apparatus and test specimen 128.3 Igniting the test specimen 138.3.1 General. 138.3.2 Procedure A Top surface ignition 138.3.3 Procedure B Propagating ignition 138.4 Assessing the burning
19、 behaviour of individual test specimens .138.5 Selecting successive volume fractions of oxygen .148.6 Determining the preliminary volume fraction of oxygen 158.7 Volume fraction of oxygen changes 159 Calculations and expression of results .169.1 Oxygen index 169.2 Determination of k 179.3 Standard d
20、eviation of oxygen volume fraction measurements .179.4 Precision of results . 1810 Comparison with a specified minimum value of the oxygen index (short procedure) 1910.1 General 1910.2 Setting up the apparatus and test specimen 1910.3 Igniting the test specimen 1910.4 Assessing the burning behaviour
21、 of the test specimens 1910.5 Expressing of results . 1911 Test report 19Annex A (normative) Calibration of equipment 20 ISO 2017 All rights reserved iiiContents PageBS EN ISO 4589-2:2017ISO 45892:2017(E)Annex B (normative) Calculation of volume fraction of oxygen .22Annex C (informative) Typical te
22、st results sheet 23Annex D (informative) Results obtained by interlaboratory trials on type VI specimens 25Annex E (informative) Precision data obtained from an interlaboratory trial carried out in 19781980 .26Bibliography .27iv ISO 2017 All rights reservedBS EN ISO 4589-2:2017ISO 45892:2017(E)Forew
23、ordISO (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 interested in a subject for which a technic
24、al 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 Commission (IEC) on all matters of el
25、ectrotechnical 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 documents should be noted. This document was
26、 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 for identifying any or all such paten
27、t 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 the convenience of users and does not co
28、nstitute 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 the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) s
29、ee the following URL: www.iso.org/iso/foreword.html.This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 4, Burning behaviour.This second edition cancels and replaces the first edition (ISO 4589-2:1996), which has been technically revised. It also incorporates the A
30、mendment ISO 4589-2:1996/Amd.1:2005. A list of all parts in the ISO 4589 series can be found on the ISO website. ISO 2017 All rights reserved vBS EN ISO 4589-2:2017ISO 45892:2017(E)IntroductionOxygen index (OI) results obtained using the methods described in this document can provide a sensitive mea
31、sure of the burning characteristics of materials under certain controlled laboratory conditions, and hence may be useful for quality control purposes. The results obtained are dependent upon the shape, orientation and isolation of the test specimen and the conditions of ignition. For particular mate
32、rials or applications, it may be necessary or appropriate to specify different test conditions. Results obtained from test specimens of differing thickness or by using different ignition procedures may not be comparable and no correlation with flammability behaviour under other fire conditions is im
33、plied.Results obtained in accordance with this document are not applicable to describe or appraise the fire hazard presented by a particular material or shape under actual fire conditions, unless used as one element of a fire risk assessment that takes into account all of the factors pertinent to th
34、e assessment of the fire hazard of a particular application for the material.For assessing the flame propagation properties of cellular materials of density 1,5 , repeat steps 8.7.2 to 8.7.4, using decreased values for d, until the condition is satisfied, except that d shall not be reduced below 0,2
35、 unless so required by the relevant material specification.9 Calculations and expression of results9.1 Oxygen indexCalculate the OI from the relationship:OI = ckdf+( )wherecfis the final value of the volume fraction of oxygen, reported to three decimal places, used in the series of NTmeasurements in
36、 accordance with 8.7, and noted in accordance with 8.7.3;d is the interval, to at least three decimal places, between oxygen volume fraction levels used and controlled in accordance with 8.7;k is a factor to be obtained from Table 4, as described in 9.2.For the purposes of calculation of as required
37、 by 8.7.4 and 9.3, the OI shall be calculated to four decimal places (i.e. two decimal places when OI is expressed as a percentage).For the purposes of reporting OI results, express OI values to the nearest 0,001 (i.e. to the nearest 0,1 when OI is expressed as a percentage), with exactly intermedia
38、te results being rounded downwards.Table 4 Values of k for calculating the oxygen index concentration from determinations made by Dixons “upanddown” method1 2 3 4 5 6Responses for the last five measurementsValues of k for which the first NLdetermination area) O OO OOO OOOOXOOOO -0,55 -0,55 -0,55 -0,
39、55 OXXXXXOOOX -1,25 -1,25 -1,25 -1,25 OXXXOXOOXO 0,37 0,38 0,38 0,38 OXXOXXOOXX -0,17 -0,14 -0,14 -0,14 OXXOOXOXOO 0,02 0,04 0,04 0,04 OXOXXXOXOX -0,50 -0,46 -0,45 -0,45 OXOXOXOXXO 1,17 1,24 1,25 1,25 OXOOXXOXXX 0,61 0,73 0,76 0,76 OXOOOXXOOO -0,30 -0,27 -0,26 -0,26 OOXXXXXOOX -0,83 -0,76 -0,75 -0,7
40、5 OOXXOXXOXO 0,83 0,94 0,95 0,95 OOXOXXXOXX 0,30 0,46 0,50 0,50 OOXOOXXXOO 0,50 0,65 0,68 0,68 OOOXXXXXOX -0,04 0,19 0,24 0,25 OOOXO16 ISO 2017 All rights reservedBS EN ISO 4589-2:2017ISO 45892:2017(E)1 2 3 4 5 6Responses for the last five measurementsValues of k for which the first NLdetermination
41、area) O OO OOO OOOOXXXXO 1,60 1,92 2,00 2,01 OOOOXXXXXX 0,89 1,33 1,47 1,50 OOOOOValues of k for which the first NLdeterminations are Responses for the last five measurementsb) X XX XXX XXXXare as given in the above table opposite the appropriate response in col-umn 6, but with the sign of k reverse
42、d, i.e. OI = cf kd (see 9.1).9.2 Determination of kThe value and sign of k are dependent upon the pattern of the responses of specimens tested in accordance with 8.7, and shall be determined from Table 4 as follows:a) If the response of the specimen tested in accordance with 8.7.1 was “O”, so that t
43、he first contrary response (see 8.7.2) was an “X”, refer to column 1 of Table 4 to select the row for which the last four response symbols correspond to those found when testing in accordance with 8.7.3. The value and sign of k will be that shown in column 2, 3, 4 or 5 for which the number of “O”s s
44、hown in row a) of the table corresponds to the number of “O” responses found for the NLseries, in accordance with 8.7.1 and 8.7.2.orb) If the response of the specimen tested in accordance with 8.7.1 was “X”, so that the first contrary response was an “O”, refer to the sixth column of Table 4 to sele
45、ct the row for which the last four response symbols correspond to those found when testing in accordance with 8.7.3. The value of k will be that shown in column 2, 3, 4 or 5 for which the number of “X”s shown in row b) of the table corresponds to the number of “X” responses found for the NLseries, i
46、n accordance with 8.7.1 and 8.7.2, but the sign of k is reversed, so that negative values shown in Table 4 for k become positive, and vice versa.NOTE An example of the determination of k and the calculation of an OI is given in Annex C.9.3 Standard deviation of oxygen volume fraction measurementsFor
47、 the purposes of 8.7.4, calculate the estimated standard deviation of the oxygen volume fraction measurements from the relationship =-OI-12=11/2cniin() ISO 2017 All rights reserved 17BS EN ISO 4589-2:2017ISO 45892:2017(E)wherecirepresents, in turn, each of the oxygen volume fractions used during mea
48、surement of the last six responses in the NTseries of measurements;OI is the oxygen index value, calculated in accordance with 9.1;nis the number of measurements of the oxygen volume fraction contributing to ci-2OI().NOTE For this method, n = 6, in accordance with 8.7.4. For n 6, different statistic
49、al criteria would apply.9.4 Precision of results9.4.1 An interlaboratory study was conducted in 1999 between ISO and ASTM using ISO 4589-2:1996 and ASTM D2863-95 as protocols for the test criteria. The precision data were determined from interlaboratory tests involving 12 laboratories, on eight polymeric materials, with two replicates of each material. The resulting data were analysed in accordance with ISO 5725-2, and are summarized in Table 5. Precision data obtained from an interlaborator
