1、BRITISH STANDARD BS EN ISO 6940:2004 Textile fabrics Burning behaviour Determination of ease of ignition of vertically oriented specimens The European Standard EN ISO 6940:2004 has the status of a British Standard ICS 13.220.40; 59.080.30 BS EN ISO 6940:2004 This British Standard was published under
2、 the authority of the Standards Policy and Strategy Committee on 25 February 2004 BSI 25 February 2004 ISBN 0 580 43495 8 National foreword This British Standard is the official English language version of EN ISO 6940:2004. It is identical with ISO 6940:2004. It supersedes BS EN ISO 6940:1995 which
3、is withdrawn. The UK participation in its preparation was entrusted to Technical Committee TCI/63, Textiles Burning behaviour, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards wh
4、ich implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This public
5、ation does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible internationa
6、l/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO titl
7、e page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 to 14, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN
8、STANDARD NORMEEUROPENNE EUROPISCHENORM ENISO6940 February2004 ICS13.220.40;59.080.30 SupersedesENISO6940:1995 Englishversion TextilefabricsBurningbehaviourDeterminationofeaseof ignitionofverticallyorientedspecimens(ISO6940:2004) TextilesComportementaufeuDterminationdela facilitdallumagedprouvettesor
9、ientesverticalement (ISO6940:2004) TextilienBrennverhaltenBestimmungder EntzndbarkeitvertikalangeordneterProben(ISO 6940:2004) ThisEuropeanStandardwasapprovedbyCENon16January2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standar
10、dthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra
11、nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Li
12、thuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyfor
13、mandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO6940:2004:EINESO96:0402(40E) 2 Foreword Thisdocument(ENISO6940:2004)hasbeenpreparedbyTechnicalCommitteeISO/TC38 “Textiles“incollaborationwithTechnicalCommitteeCEN/TC248“Textilesandtextileproducts“, thesecretariatofwhichisheldbyBSI. T
14、hisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationof anidenticaltextorbyendorsement,atthelatestbyAugust2004,andconflictingnational standardsshallbewithdrawnatthelatestbyAugust2004. ThisdocumentsupersedesENISO6940:1995. AccordingtotheCEN/CENELECInternalRegulations,thenati
15、onalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium, Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary, Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland, Portugal,Slovakia,Slovenia,Spain,S
16、weden,SwitzerlandandUnitedKingdom. NOTEFROMCMC TheforewordissusceptibletobeamendedonreceptionoftheGerman languageversion.Theconfirmedoramendedforeword,andwhenappropriate,thenormative annexZAforthereferencestointernationalpublicationswiththeirrelevantEuropean publicationswillbecirculatedwiththeGerman
17、version. Endorsementnotice ThetextofISO6940:2004hasbeenapprovedbyCENasENISO6940:2004withoutany modifications. ENISO6940:2004INTERNATIONAL STANDARD ISO 6940 Second edition 2004-02-01 Reference number ISO 6940:2004(E) OSI 2004 Textile fabrics Burning behaviour Determination of ease of ignition of vert
18、ically oriented specimens Textiles Comportement au feu Dtermination de la facilit dallumage dprouvettes orientes verticalementENISO6940:2004ISO :0496(4002)E ii ISO 4002 All rithgs reresvde id FDPscalimer ThFDP si fam eliy ctnome niat deddebyepfa.sec In cacnadrociw eth sebodA sneciliycilop gn, thf si
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22、a nif yorm ro by nam ysnae, tcelerm ro cinocinahcela, tohp gnidulcnicopom dna gniyicrfomli, tiwuoht repsimsi noin wrtif gnirtie mohI reSO ta the asserdd ebwol or ISOmem sreb obyd t nitnuoc ehry fo teh euqertsre. SIc Oopyrigho tfifce saCsop etela 65 -HCG 1121eneva 02 T.le 22 14 + 10 947 11 Fxa + 22 1
23、4 0 94774 9 Eam-il ocpyrithgios.ogr Web wwwi.soo.rg ENISO6940:2004OSI 4964002:0)E( ISO 4002 r llAithgs reservde iii Contents Page 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Principle 2 5 Apparatus . 2 6 Cautionary measures 3 7 Sampling . 3 8 Conditioning and testing atmosphere .
24、5 9 Setting up the apparatus . 7 10 Test procedure . 10 11 Calculation of the mean ignition time 11 12 Precision . 11 13 Test report 11 Annex A (normative) Description and construction of the burner 12 Annex B (informative) Calculation of mean ignition time worked example 13 Annex C (informative) Ex
25、perimental techniques . 14 ENISO6940:2004ISO :0496(4002)E iv ISO 4002 All rithgs reresvde Foreword ISO (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 ou
26、t 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 co
27、llaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International
28、Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the element
29、s of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 6940 was prepared by Technical Committee ISO/TC 38, Te x t i l e s , Subcommittee SC 19, Burning behaviour of textiles and textile products. This second editio
30、n cancels and replaces the first edition (ISO 6940:1984), which has been technically revised. It also incorporates the Amendment ISO 6940:1984/Amd.1:1993. ENISO6940:2004OSI 4964002:0)E( ISO 4002 r llAithgs reservde v Introduction This method is one of two closely related methods of test for the infl
31、ammability of textile fabrics. It determines the ease of ignition, as defined in ISO 4880; the other method measures flame spread time (see ISO 6941). ENISO6940:2004blank ENISO6940:2004ANRETNIITOTS LANDNADRA OSI 4964002:0)E( ISO 4002 r llAithgs reservde 1 Textile fabrics Burning behaviour Determinat
32、ion of ease of ignition of vertically oriented specimens 1S c o p e This International Standard specifies a method for the measurement of ease of ignition of vertically oriented textile fabrics and industrial products in the form of single or multi-component fabrics (coated, quilted, multilayered, s
33、andwich constructions, and similar combinations), when subjected to a small, defined flame. This method assesses the properties of textile fabrics in response to flame contact under controlled conditions. Results may not apply to situations where there is restricted air supply or exposure to large s
34、ources of intense heat. The influence of seams on the behaviour of fabrics can be determined by this method, the seam being positioned within the test specimen so as to be subjected to the test flame. Whenever practicable, trimmings should be tested as part of the fabric assembly on which they are,
35、or will be, used. 2 Normative references The following referenced documents are indispensable for the application 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 4880
36、, Burning behaviour of textiles and textile products Vocabulary ISO 6941, Textile fabrics Burning behaviour Measurement of flame spread properties of vertically oriented specimens 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 flame applicat
37、ion time time for which the ignition flame is applied to the test specimen 3.2 afterflame time duration of flame length of time for which a material continues to flame under specified test conditions, after the ignition source has been removed NOTE Afterflame time is measured to the nearest second a
38、nd afterflame times of less than should be recorded as zero. 3.3 ignition initiation of combustion 1,0 s ENISO6940:2004ISO :0496(4002)E 2 ISO 4002 All rithgs reresvde 3.4 sustained combustion flaming of the specimen which gives an afterflame time of or more or which reaches the top or vertical edges
39、 in less than 3.5 minimum ignition time minimum time of exposure of a material to an ignition source to obtain sustained combustion under specified test conditions 4P r i n c i p l e A defined flame from a specified burner is applied to the surface or bottom edge of textile specimens which are verti
40、cally oriented. The mean ignition time is determined as the weighted mean of the measured flame application times to obtain ignition of the specimens. 5 Apparatus 5.1 Mounting frame, constructed to a design capable of holding the gas burner (5.2, see Figure 1) and the test specimen holder (5.3, see
41、Figure 2) in the specified relative orientation (see Figure 3). 5.2 Gas burner, as described in Annex A, capable of being moved from a standby position, where the tip of the burner is at least from the test specimen, to either the horizontal or inclined operating position (see Figure 3). 5.3 Specime
42、n holder, consisting of a rectangular metal frame having a specimen support pin at each corner of a rectangle of length by width (see Figure 2). The pins for supporting the specimen have a maximum diameter of and a length of at least . NOTE Longer pins may be needed for mounting thick or multilayer
43、specimens. For the purpose of locating the specimen in a plane at least away from the frame (see 9.1.1 and 9.2.1), a spacer stub of diameter and a length of at least shall be positioned adjacent to each of the four pins. 5.4 Template, flat and rigid, made of a suitable material and a size correspond
44、ing to the size of the specimen ( ). Holes approximately in diameter are drilled in each corner of the template and positioned so that the distances between the centres of the holes correspond to the distances between the pins on the specimen holder (see Figure 2). The holes should be located equidi
45、stant about the vertical centreline of the template. 5.5 Gas, commercial grade propane or butane or butane/propane mixtures. NOTE Commercial grade propane is preferred but other gases may be used. 5.6 Timing devices 5.6.1 A timing device to control and measure the flame application time, which can b
46、e set at and adjusted at intervals to an accuracy of or better. 5.6.2 Three timing devices reading to or better are required to measure the afterflame time. This device is started, preferably automatically, at the instant of test flame termination or removal, and is stopped manually. 5s 5s 75 mm 190
47、 mm 70 mm 2mm 26mm 20 mm 2mm 20mm 200 mm 80 mm 4 mm 1s 1 s 0,2 s 0,2 s ENISO6940:2004OSI 4964002:0)E( ISO 4002 r llAithgs reservde 3 6 Cautionary measures 6.1 Construction of testing equipment Some products of combustion are corrosive. The equipment shall be constructed of material that will not be adversely affected by the fumes. 6.2 Location of test apparatus The volume of air surrounding the test location shall not have any influence on testing. Where an open-fronted cabinet is used for the test, provision shall be made to allow the specimen to be mounted at least from any wall.
