1、December 2011 Translation by DIN-Sprachendienst.English price group 6No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 59.140.30!$xX“1855361www.din.deDDIN EN ISO 17074Leather Physical and mechanical tests Determination of resistance to horizontal spread of flame(ISO 17074:2006)English translation of DIN EN ISO 17074:2011-12Leder Physikalische und mechanische Prfungen Bestimmung der Widerstandsfhigkeit gegen die ho
3、rizontale Ausbreitung von Flammen(ISO 17074:2006)Englische bersetzung von DIN EN ISO 17074:2011-12Cuir Essais physiques et mcaniques Dtermination de la rsistance la propagation horizontale de la flamme(ISO 17074:2006)Traduction anglaise de DIN EN ISO 17074:2011-12SupersedesDIN EN 14326:2004-03www.be
4、uth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 8 pages12.11 DIN EN ISO 17074:2011-12 2 A comma is used as the decimal marker. National foreword This standard has been prepared by the “International Union of Leather Technologists and Chemists
5、 Societies (IULTCS)” and has been taken over as EN ISO 17074:2011 by Technical Committee CEN/TC 289 “Leather” (Secretariat: UNI, Italy). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-05
6、-51 AA Anforderungen und physika-lische Prfverfahren fr Leder und seine Ausgangsprodukte. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 2418 DIN EN ISO 2418 ISO 2419 DIN EN ISO 2419 ISO 2589 DIN EN ISO 2589 Amendments This standard di
7、ffers from DIN EN 14326:2004-03 as follows: a) the number of the standard has been changed. Previous editions DIN EN 14326: 2004-03 National Annex NA (informative) Bibliography DIN EN ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location DIN EN ISO 2419, Leather Ph
8、ysical and mechanical tests Sample preparation and conditioning DIN EN ISO 2589, Leather Physical and mechanical tests Determination of thickness EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17074 September 2011 ICS 59.140.30 Supersedes EN 14326:2003English Version Leather - Physical and
9、 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) Leder - Physikalische und mechanische Prfungen - Bestimmung der Widerstandsfhigk
10、eit 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 conditions for giving this European Standard the status of a national standar
11、d 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, French, German). A version in any
12、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, Bulgaria, Croatia, Cyprus, Czech Republ
13、ic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE N
14、ORMALISATION 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 17074:2011: EContents DIN EN ISO 17074:2011-12 EN ISO 17074:2011 (E) 2 Page F
15、oreword3 1 Scope 4 2 Normative references 4 3 Principle4 4 Apparatus .4 5 Sampling and sample preparation.5 6 Procedure .5 7 Expression of results 6 8 Test report 6 Foreword The text of ISO 17074:2006 has been prepared by International Union of Leather Technologists and Chemists Societies and has be
16、en taken over as EN ISO 17074:2011 by Technical Committee CEN/TC 289 “Leather” the secretariat of which is held 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
17、national standards shall be withdrawn at the latest by March 2012. Attention is drawn to the possibility that 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 super
18、sedes EN 14326:2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hung
19、ary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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 modific
20、ation. DIN EN ISO 17074:2011-12 EN ISO 17074:2011 (E) 3 1 Scope This International Standard specifies a method 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.
21、 NOTE The method uses the apparatus specified in ISO 3795 but incorporates special provisions for sampling, 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 ci
22、ted applies. For undated references, the latest edition of the referenced document (including any amendments) 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
23、, Leather Physical and mechanical tests Determination of thickness ISO 3795:1989, Road vehicles, and tractors 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 def
24、ined flame for a specified time with the flame acting on the free end of the test piece. The time is recorded 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 3
25、795:1989. 4.3 Gas burner, as specified in 5.3 of ISO 3795:1989. 4.4 Test gas, calorific value approximately 38 MJ/m3, (e.g. natural gas). 4.5 Stop watch, reading to 0,5 s. DIN EN ISO 17074:2011-12 EN ISO 17074:2011 (E) 4 4.6 Thickness gauge, conforming to ISO 2589. 4.7 Ruler, reading to 1 mm. 4.8 Fu
26、me cupboard, as specified in 5.7 of ISO 3795:1989. 5 Sampling and 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
27、for more than two hides or skins to be tested in one batch, then 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
28、 pieces should be maintained under these conditions until immediately 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, c
29、lose the air inlet and adjust the flame to a height of 38 mm 1 mm 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
30、1) is exposed to the flame. After 15,0 s 0,5 s, extinguish the flame 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. DIN EN ISO 17074:2011-12 EN ISO 17074:2011 (E) 5
31、6.6 Note the time when 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
32、piece in Figure 1. If the 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-extinguish
33、es. Burnt distance is the 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 i
34、s 0 mm/min. 6.9 Allow the 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
35、distance, d. 8 Test report 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 conditio
36、ning and testing as given 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. DIN EN ISO 17074:2011-12 EN ISO 17074:2011 (E) 6
