1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 17074:2011Leather Physical andmechanical tests Determination of resistance tohorizontal spread of flame (ISO17074:2006)BS EN ISO 17074:2011 BRITISH STANDARDNational for
2、ewordThis British Standard is the UK implementation of EN ISO17074:2011. It is identical to ISO 17074:2006. It supersedes BS EN14326:2003 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee TCI/69, Footwear, leather and coated fabrics.A list of organization
3、s represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 72289 9ICS 13.220.40; 59.140.30Compliance with a British Standar
4、d cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 September 2011.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17074 September 2011
5、 ICS 59.140.30 Supersedes EN 14326:2003English Version Leather - Physical and mechanical tests - Determination of resistance to horizontal spread of flame (ISO 17074:2006) Cuir - Essais physiques et mcaniques - Dtermination de la rsistance la propagation horizontale de la flamme (ISO 17074:2006) Led
6、er - Physikalische und mechanische Prfungen - Bestimmung der Widerstandsfhigkeit gegen die horizontale Ausbreitung von Flammen (ISO 17074:2006) This European Standard was approved by CEN on 18 August 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the
7、conditions for 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 e
8、xists in three 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
9、standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland
10、and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO
11、17074:2011: EBS EN ISO 17074:2011EN ISO 17074:2011 (E) 3 Foreword The text of ISO 17074:2006 has been prepared by International Union of Leather Technologists and Chemists Societies and has been taken over as EN ISO 17074:2011 by Technical Committee CEN/TC 289 “Leather” the secretariat of which is h
12、eld by UNI. 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 March 2012, and conflicting national standards shall be withdrawn at the latest by March 2012. 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 14326:2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations
14、 of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, R
15、omania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 17074:2006 has been approved by CEN as a EN ISO 17074:2011 without any modification. BS EN ISO 17074:2011ISO 17074:2006(E) IULTCS/IUP 47:2006(E) ISO 2006 All rights reserved iiiForeword
16、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 out through ISO technical committees. Each member body interested in a subject for which a technical
17、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 elect
18、rotechnical 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 Standards. Draft International Standards adopted by the technical committees are circulated to the
19、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 elements of this document may be the subject of patent rights. ISO shall not be held responsible for ident
20、ifying any or all such patent rights. ISO 17074 was prepared by the Physical Test Commission of the International Union of Leather Technologists and Chemists Societies (IUP Commission, IULTCS) in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leat
21、her, the secretariat of which is held by UNI. It was published as EN 14326. It is based on IUP 47 published in J. Soc. Leather Tech. Chem., 86 (7), p. 359, 2002, and declared an official method of the IULTCS in May 2003. IULTCS, originally formed in 1897, is a world-wide organization of professional
22、 leather societies to further the advancement of leather science and technology. IULTCS has three Commissions, which are responsible for establishing international methods for the sampling and testing of leather. ISO recognizes IULTCS as an international standardizing body for the preparation of tes
23、t methods for leather. BS EN ISO 17074:2011BS EN ISO 17074:2011INTERNATIONAL STANDARD ISO 17074:2006(E)IULTCS/IUP 47:2006(E) ISO 2006 All rights reserved 1Leather Physical and mechanical tests Determination of resistance to horizontal spread of flame 1 Scope This International Standard specifies a m
24、ethod for determining the horizontal burning rate of leather. It is applicable to all light leathers but is particularly intended for leathers used in the passenger compartment of motor vehicles. NOTE The method uses the apparatus specified in ISO 3795 but incorporates special provisions for samplin
25、g, conditioning and testing of leather. 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 amendme
26、nts) applies. ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location ISO 2419, Leather Physical and mechanical tests Sample preparation and conditioning ISO 2589, Leather Physical and mechanical tests Determination of thickness ISO 3795:1989, Road vehicles, and trac
27、tors and machinery for agriculture and forestry Determination of burning behaviour of interior materials 3 Principle A test piece is held horizontally in a U-shaped holder and is exposed to a defined flame for a specified time with the flame acting on the free end of the test piece. The time is reco
28、rded for the flame to self-extinguish or to burn a measured distance. 4 Apparatus 4.1 Combustion chamber, as specified in 5.1 of ISO 3795:1989. 4.2 Test piece holder, as specified in 5.2 of ISO 3795:1989. 4.3 Gas burner, as specified in 5.3 of ISO 3795:1989. 4.4 Test gas, calorific value approximate
29、ly 38 MJ/m3, (e.g. natural gas). 4.5 Stop watch, reading to 0,5 s. BS EN ISO 17074:2011ISO 17074:2006(E) IULTCS/IUP 47:2006(E) 2 ISO 2006 All rights reserved4.6 Thickness gauge, conforming to ISO 2589. 4.7 Ruler, reading to 1 mm. 4.8 Fume cupboard, as specified in 5.7 of ISO 3795:1989. 5 Sampling an
30、d sample preparation 5.1 Sample in accordance with ISO 2418. 5.2 Prepare three test pieces of the form and dimensions shown in Figure 1 with the long edge of the test piece being parallel to the backbone. NOTE If there is a requirement for more than two hides or skins to be tested in one batch, then
31、 only one sample need be taken from each hide or skin, provided that the overall total is not less than three test pieces. Dimensions in millimetres Figure 1 Test piece 5.3 Condition the test pieces in accordance with ISO 2419. The test pieces should be maintained under these conditions until immedi
32、ately prior to testing. 6 Procedure 6.1 Determine the thickness of the test piece in accordance with ISO 2589. 6.2 Place the test piece in the holder (4.2) so that the exposed side will be downwards to the flame. 6.3 Light the burner, close the air inlet and adjust the flame to a height of 38 mm 1 m
33、m using the mark in the chamber (4.1). Allow the flame to burn for at least 5 min while the gas flow stabilises. 6.4 Push the test piece holder (4.2) into the combustion chamber (4.1) so that the left hand end of the test piece (Figure 1) is exposed to the flame. After 15,0 s 0,5 s, extinguish the f
34、lame by turning off the gas supply to the burner. 6.5 Allow any flame on the leather to propagate along the test piece, observing the flame on the side where the flame is burning faster. BS EN ISO 17074:2011ISO 17074:2006(E) IULTCS/IUP 47:2006(E) ISO 2006 All rights reserved 36.6 Note the time when
35、the foot of the flame passes the first measuring points which are the holes at the left hand end of the test piece in Figure 1. Allow the flame to continue and note the time when the flame reaches the last measuring points which are the holes at the right hand end of the test piece in Figure 1. If t
36、he flame self-extinguishes before reaching the last measuring point, note the time when it self-extinguishes. 6.7 Using the ruler (4.7), measure the burnt distance up from the first measuring point to either the last measuring point or the point where the flame self-extinguishes. Burnt distance is t
37、he decomposed part of the test piece, which is destroyed on its surface or in the interior by burning. 6.8 If the sample does not ignite, does not continue burning when the flame is removed or self-extinguishes before reaching the first measuring point, then the burning rate is 0 mm/min. 6.9 Allow t
38、he combustion chamber to cool to less than 30 C before further tests are carried out. 7 Expression of results Calculate the burning rate, B, in millimetres per minute, using the formula: 60dBt= where d is the burnt distance, in millimetres; t is the time, in seconds, to burnt distance, d. 8 Test rep
39、ort The test report shall include the following: a) a reference to this International Standard, i.e. ISO 17074:2006; b) the mean thickness of the test pieces; c) the mean value of the burning rate in millimetres per minute (mm/min); d) the standard atmosphere used for conditioning and testing as giv
40、en in ISO 2419 (i.e. 20 C/65 % RH, or 23 C/50 % RH); e) any deviations from the method specified in this International Standard; f) full details for identification of the sample and any deviations from ISO 2418 with respect to sampling. This page deliberately left blankThis page deliberately left bl
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