《BS-EN-ISO-6941-1995 ISO-6941-1984.pdf》由会员分享，可在线阅读，更多相关《BS-EN-ISO-6941-1995 ISO-6941-1984.pdf（18页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN ISO 6941:1995 Textile fabrics Burning behaviour Measurement of flame spread properties of vertically oriented specimens This European Standard EN ISO 6941:1995 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:14 GMT+00:00 2006,
2、Uncontrolled Copy, (c) BSI BS EN ISO 6941:1995 This British Standard, having been prepared under the direction of the Textiles and clothing Standards Policy Committee was published under the authority of the Standards Board and comes into effect on 15 March 1995 BSI 07-1999 The following BSI referen
3、ces relate to the work on this standard: Committee reference TCM/63 Announced in BSI News June 1994 ISBN 0 580 23297 2 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizatio
4、ns of the following countries: AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standard FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standar
5、dization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da
6、Qualidade SpainAsociacin Espaola de Normalizacin y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na,
7、 Sat Nov 18 02:18:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 6941:1995 BSI 07-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 1Scope and field of application3 2References3 3Definitions3 4Principle3 5Health and safety of operators3 6Apparatus
8、 and materials3 7Test specimens4 8Procedure4 9Precision5 10Test report5 Annex A Description and construction of the burner8 Annex B Experimental techniques10 Annex ZA (normative) Normative references to international publications with their relevant European publications11 National annex NA (informa
9、tive) Committees responsible12 National annex NB (informative) Cross-referencesInside back cover Figure 1 Specimen holder6 Figure 2 Burner ignition location7 Figure 3 Gas burner9 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 6941
10、:1995 ii BSI 07-1999 National foreword This British Standard has been prepared under the direction of the Textiles and Clothing Standards Policy Committee and is the English language version of EN ISO 6941:1995 Textile fabrics Burning behaviour Measurement of flame spread properties of vertically or
11、iented specimens, including Amendment A1, published by the European Committee for Standardization. It is identical with ISO 6941:1984, including Amendment 1, published by the International Organization for Standardization (ISO). BS ISO 6940 and BS EN ISO 6941, including their amendments, supersede e
12、quivalent tests in BS 5438:1989, which are deleted by amendment. BS 5438:1976 is retained for the time being as it is required for use in legislation. EN 26941 was prepared as a result of international discussions in which the UK took an active part. A British Standard does not purport to include al
13、l the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and
14、 ii, the EN ISO title page, pages 2 to 12, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov
15、 18 02:18:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6941 January 1995 ICS 13.220.40 Descriptors: Textiles, fabrics, tests, fire tests, determination, flame propagation, test equipment, burners English version Textile fabrics Burning behavi
16、our Measurement of flame spread properties of vertically oriented specimens (ISO 6941:1984, including Amendment 1:1992) Textiles Comportement au feu Dtermination des proprits de flamme dprouvettes orientes verticalement (ISO 6941:1984 amendement 1:1992 inclus) Textilien Brennverhalten Messung der Fl
17、ammenausbreitungseigenschaften vertikal angerdneter Proben (ISO 6941:1984, einschlielich nderung 1:1992) This European Standard was approved by CEN on 1995-01-02. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standar
18、d 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 Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, Ge
19、rman). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France,
20、 Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1995
21、Copyright reserved to CEN members Ref. No. EN ISO 6941:1995 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 6941:1995 BSI 07-1999 2 Foreword This European Standard has been prepared by the Technical Committee CEN/TC 248, Textiles an
22、d textile products, 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 July 1995, and conflicting national standards shall be withdrawn at the latest by July
23、1995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingd
24、om. NOTENormative references to international publications are listed in Annex ZA (normative). Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 6941:1995 BSI 07-19993 1 Scope and field of application This International Standard specifi
25、es a method for the measurement of flame spread properties of vertically oriented textile fabrics intended for apparel, curtains, draperies and large tents including awnings and marquees, in the form of single or multicomponent (coated, quilted, multilayered, sandwich construction and similar combin
26、ations) fabrics. The method should be used solely to assess the properties of materials or systems in response to heat flame under controlled laboratory conditions. The results may not apply to situations where there is restricted air supply or prolonged exposure to heat as in a conflagration. 2 Ref
27、erences ISO 139, Textiles Standard atmospheres for conditioning and testing. ISO 4880-1, Burning behaviour of textiles and textile products Vocabulary Part 1. 3 Definitions For the purpose of this International Standard, the following definitions apply (see ISO 4880-1): 3.1 afterflame persistence of
28、 flaming of a material, under specified test conditions, after the ignition source has been removed 3.2 afterflame time the length of time for which a material continues to flame, under specified test conditions, after the ignition source has been removed (Also called Duration of flame.) 3.3 aftergl
29、ow persistence of glowing of a material, under specified test conditions, after cessation of flaming or, if no flaming occurs, after removal of the ignition source 3.4 afterglow time the time for which a material continues to glow, under specified test conditions, after cessation of flaming, or afte
30、r removal of the ignition source. (Also called Duration of afterglow.) 3.5 flame spread time the time taken by a flame on a burning material to travel a specified distance under specified test conditions 4 Principle A defined ignition flame from a specified burner is applied for a defined period of
31、time to textile specimens which are vertically oriented. The flame spread time is the time in seconds for a flame to travel between marker threads located at defined distances. Other properties relating to flame spread may also be observed, measured and recorded. NOTEAttention is drawn to Annex B re
32、garding quality of experimental techniques. 5 Health and safety of test operators Burning of textiles may produce smoke and toxic gases which can affect the health of operators. The testing area should be cleared of smoke and fumes by suitable means. 6 Apparatus and materials 6.1 Construction of tes
33、ting equipment Some products of combustion are corrosive. The equipment should be constructed of material which will not be adversely affected by the fumes. 6.2 Location of test A location in which the air movement is less than 0,2 m/s at the commencement of the test and is not further influenced by
34、 mechanical devices operating during the test is required. The volume of air surrounding the test location shall be such that the test is not affected by any reduction of oxygen concentration. Where an open-fronted cabinet is used for the test, provision shall be made to permit the specimen to be mo
35、unted at least 300 mm from any wall. 6.3 Template A flat rigid template made of suitable material and of a size corresponding to the size of the specimen shall be used. Holes approximately 2 mm diameter are drilled in the template and positioned so that the distances between the centres of the holes
36、 correspond to the distances between the pins on the frames (see Figure 1). The holes shall be located equidistant about the vertical centrelines of the template (see the note in 7.2). Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:18:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN IS
37、O 6941:1995 4 BSI 07-1999 6.4 Specimen holder A specimen holder consisting of a rectangular frame 560 mm high having two rigidly connected parallel rods spaced 150 mm apart on which are fitted pins for mounting the test specimen which is located in a plane at least 20 mm from the frame. The mounting
38、 pins shall be not greater than 2 mm diameter and at least 27 mm long. The pins are located on the parallel rods at locations shown in Figure 1. The frame is fitted onto a suitable support to maintain the rods in a vertical orientation during testing. NOTEFor the purpose of locating the specimen on
39、the pins in a plane away from the frame, spacer stubs 2 mm diameter may be provided adjacent to the pins. 6.5 Gas burner A gas burner as described in Annex A. NOTESmall differences in the design and dimensions of the burner can influence the configuration of the burner flame and so affect the result
40、s of the tests. 6.6 Gas Commercial grade propane or butane gas. 6.7 Marker threads White mercerized cotton threads having a maximum linear density of 50 tex. 6.8 Timing devices An appropriate number of suitable timing devices having an accuracy of at least 0,2 s. 6.9 Measuring instruments Rulers gra
41、duated in millimetres. 7 Test specimens 7.1 Size The size of each specimen shall be 560 mm 170 mm. 7.2 Pin location marks Place the template (see 6.3) centrally on top of the specimen and, by using the holes in the template, mark the positions through which the pins must pass. NOTEWhere the fabric i
42、s of open construction (e.g. scrim, gauze), small pieces of adhesive tape may be affixed to the fabric at the pin sites and the pin positions marked on the tape. 7.3 Number Cut three specimens from each of the length direction and the width direction. Where the two surfaces of the fabric are differe
43、nt, cut another set of specimens and test both surfaces. Where the two surfaces are similar test the face side of the fabric. Extra specimens may be needed if retesting is necessary (see 8.8). NOTEThe flame spread time for a fabric may depend on whether the machine direction is upwards or downwards,
44、 or whether the face or the back of the fabric is ignited. 7.4 Conditioning of test Specimens Condition test specimens in one of the following ways: a) in the standard temperate atmosphere of 20 2 C and (65 2) % rh in accordance with ISO 139; b) drying in an oven at 105 2 C for not less than 1 h, th
45、en cooling in a desiccator for at least 30 min; or c) any other conditioning atmosphere as agreed by the interested parties. 8 Procedure 8.1 Carry out the test in an atmosphere having a temperature between 10 and 30 C and a relative humidity between 15 % and 80 %. 8.2 Light the burner and preheat it
46、 for 2 min. Adjust the flame height to 40 2 mm measured as the distance between the top of the burner tube and the tip of the yellow part of the flame when the burner is vertically oriented and the flame is viewed in dim light. 8.3 If testing is not being performed immediately, place the specimens i
47、n sealed containers until testing begins. Begin testing each specimen within 2 min of removing it from the conditioning atmosphere or sealed container. 8.4 Place the specimen on the pins of the test frame, making certain that the pins pass through the points marked off from the template and that the
48、 specimen is at least 20 mm removed from the frame. Fit the frame on the support so that the specimen is vertical. (See 7.2.) 8.5 Attach the marker threads horizontally in front of the specimen at the locations shown in Figure 1. At each location, mount a loop of thread so that the two segments are
49、spaced 1 mm and 5 mm from the plane of the front of the specimen. Attach each loop to a suitable timing device. Impose sufficient tension to the thread to maintain its position relative to the specimen. 8.6 For all fabrics intended for apparel, curtains and drapes, position the burner as described in 8.6.1. Where fabrics intended for curtains and drapes fail to ignite with the burner in this position, the burner position described in 8.6.2 is used if required by the relevant fabric specification. For fabrics for l