1、BS EN ISO 4674-1:2016Rubber- or plastics-coatedfabrics Determination oftear resistancePart 1: Constant rate of tear methodsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 4674-1:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implement
2、ation of EN ISO4674-1:2016. It supersedes BS EN ISO 4674-1:2003 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee TCI/69, Footwear, leather and coated fabrics.A list of organizations represented on this committee can beobtained on request to its secretary
3、.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI Standards Limited 2016ISBN 978 0 580 85473 6ICS 59.080.40Compliance with a British Standard cannot confe
4、r immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2016.Amendments/Corrigenda issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 4674-1 November 2016 ICS
5、 59.080.40 Supersedes EN ISO 4674-1:2003English Version Rubber- or plastics-coated fabrics - Determination of tear resistance - Part 1: Constant rate of tear methods (ISO 4674-1:2016) Supports textiles revtus de caoutchouc ou de plastique - Dtermination de la rsistance au dchirement - Partie 1: Mtho
6、des vitesse constante de dchirement (ISO 4674-1:2016) Mit Kautschuk oder Kunststoff beschichtete Textilien - Bestimmung der Weiterreifestigkeit - Teil 1: Verfahren mit konstanter Geschwindigkeit (ISO 4674-1:2016) This European Standard was approved by CEN on 2 October 2016. CEN members are bound to
7、comply with the CEN/CENELEC Internal Regulations which stipulate the 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-CEN
8、ELEC Management Centre or to any CEN member. This European Standard exists 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 th
9、e same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxemb
10、ourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
11、 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 4674-1:2016 EBS EN ISO 4674-1:2016EN ISO 4674-1:2016 (E) 3 European foreword This document (EN ISO 4674-1:2016) has been prepared by Technical Committee ISO/TC 45 “Rubber an
12、d rubber products” in collaboration with Technical Committee CEN/TC 248 “Textiles and 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 May
13、 2017, and conflicting national standards shall be withdrawn at the latest by May 2017. 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
14、. This document supersedes EN ISO 4674-1:2003. 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, For
15、mer Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 4674-
16、1:2016 has been approved by CEN as EN ISO 4674-1:2016 without any modification. BS EN ISO 4674-1:2016ISO 4674-1:2016(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Apparatus and reagents 25 Atmospheres for conditioning and testing 25.1 For conditioning . 2
17、5.2 For testing . 26 Time-interval between manufacture and testing. 27 Method A Tongued (double-tear) test piece . 27.1 Selection and preparation of test pieces . 27.2 Procedure 47.3 Calculation and expression of results 57.3.1 Trace with a series of definite peaks 57.3.2 Trace without definite peak
18、s . 58 Method B Trouser-shaped (single-tear) test piece 68.1 Selection and preparation of test pieces . 68.2 Procedure 78.3 Calculation and expression of results 89 Precision . 810 Test report . 8Annex A (informative) Example of calculation of tear force 9Annex B (normative) Wide-width trouser-shape
19、d test piece 11 ISO 2016 All rights reserved iiiContents PageBS EN ISO 4674-1:2016ISO 4674-1:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally c
20、arried out 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 wor
21、k. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical 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 diffe
22、rent approval criteria needed for the different types of ISO documents should be noted. This document was 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
23、 be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent 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/patent
24、s).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Or
25、ganization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses).This second edition cancels and replaces the
26、first edition (ISO 4674-1:2003), which has been technically revised. The changes are as follows. The title of Clause 4 has been changed to “Apparatus and reagents”. The clamping device and some reagents have been added. Clause 5 has been broken down to two subclauses for conditioning and for testing
27、 respectively. The atmosphere of conditioning has been referred to the condition of “1” specified in ISO 2231:1989. New Clause 6 “Time-interval between manufacturing and testing” has been added. In 7.1, 7.2, 8.1, and 8.2, the wet testing has been moved from Clause 5 with partial modification. In 7.2
28、 and 8.2, the procedure of handling abnormal test results has been incorporated. The NOTE in each subclause has been moved to the body text respectively. In Clause 10, item f) has been added. Annex B has been changed to normative and the body text format has been subdivided by adding clauses.ISO 467
29、4 consists of the following parts, under the general title Rubber- or plastics-coated fabrics Determination of tear resistance: Part 1: Constant rate of tear methods Part 2: Ballistic pendulum methodiv ISO 2016 All rights reservedBS EN ISO 4674-1:2016ISO 4674-1:2016(E)IntroductionTearing is amongst
30、the more usual ways of destruction for many thin materials such as paper, coated or uncoated textiles, plastic films and leather. Knowledge of the resistance of these materials to this type of behaviour is therefore very important.In practice, tearing can result from very different circumstances; he
31、nce the large number of test methods that have been developed in order to predict the behaviour of materials in various situations.The ISO 4674 series deals with initiated tearing, i.e. the propagation of a tear from an initiating cut.This part of ISO 4674 describes two methods using a tensile-testi
32、ng machine at constant rate of elongation. ISO 4674-2 describes a dynamic method using the kinetic energy of a falling pendulum. ISO 2016 All rights reserved vBS EN ISO 4674-1:2016BS EN ISO 4674-1:2016Rubber- or plastics-coated fabrics Determination of tear resistance Part 1: Constant rate of tear m
33、ethodsWARNING Persons using this part of ISO 4674 should be familiar with normal laboratory practice. This part of ISO 4674 does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practic
34、es and to ensure compliance with any national regulatory conditions.1 ScopeThis part of ISO 4674 specifies two methods for determining the forces necessary to initiate and propagate tearing of a coated fabric using the constant rate of tear method. The methods described are the following: method A:
35、tongue tear; method B: trouser tear.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the refer
36、enced document (including any amendments) applies.ISO 1421, Rubber- or plastics-coated fabrics Determination of tensile strength and elongation at breakISO 2231:1989, Rubber- or plastics-coated fabrics Standard atmospheres for conditioning and testingISO 2286-1, Rubber- or plastics-coated fabrics De
37、termination of roll characteristics Part 1: Methods for determination of length, width and net massISO 2602, Statistical interpretation of test results Estimation of the mean Confidence interval3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1pea
38、kpoint on an autographic trace where the gradient, relative to the force values recorded, changes from positive to negativeNote 1 to entry: For tear recordings, a peak to be used for calculation is defined by a drop in force of at least 10 % of the last increasing force value.3.2length of tearmeasur
39、ed length of a tear produced by a tearing force from the initiation of the force until its terminationINTERNATIONAL STANDARD ISO 4674-1:2016(E) ISO 2016 All rights reserved 1BS EN ISO 4674-1:2016ISO 4674-1:2016(E)4 Apparatus and reagents4.1 Constant rate of extension tensile-testing machine, complyi
40、ng with ISO 1421. Tear forces shall be recorded by an autographic recorder. If recording of force and extension is obtained by means of data-acquisition boards and software, the frequency of data collection shall be not less than 8 s1.4.2 Clamping device, the width of each jaw shall be no less than
41、the width of the portions of the test piece to be clamped, i.e. 150 mm and 50 mm for a tongued test piece, 50 mm for a normal trouser test piece and 100 mm for a large trouser test piece (half of 200 mm). For method B, the jaws shall be twice as wide as the width of the portion to be clamped. This i
42、s necessary to ensure that the two legs are positioned as shown in Figure 6 with the edges of each leg correctly aligned with the axis of force application.4.3 Equipment in which the test pieces can be immersed in water prior to wet testing.4.4 Distilled or deionized water, for wetting out the test
43、pieces.4.5 Wetting agent or surfactant.5 Atmospheres for conditioning and testing5.1 For conditioningThe atmosphere shall be the method of conditioning “1” specified in ISO 2231:1989.For fabrics coated on one side only, a minimum of 16 h exposure is recommended.For fabrics coated on both sides, a mi
44、nimum of 24 h is recommended.5.2 For testingThe atmosphere shall be selected from A through E specified in ISO 2231:1989. If it is necessary to control both temperature and humidity, select the atmosphere from A through C.NOTE The temperature 23 C is normally the testing atmosphere in temperate coun
45、tries and 27 C is normally in tropical and subtropical countries.6 Time-interval between manufacture and testingFor all test purposes, the minimum time between the manufacture and testing shall be 16 h. For non-product tests, the maximum time between manufacture and testing shall be four weeks and f
46、or evaluations intended to be comparable, the tests, as far as possible, shall be carried out after the same time-interval.For products, unless otherwise agreed between the interested parties, the time between the manufacture and testing shall not exceed 3 months.7 Method A Tongued (double-tear) tes
47、t piece7.1 Selection and preparation of test piecesSelect 10 test pieces, each 200 mm long 150 mm wide. Select five test pieces in the longitudinal direction and five in the transverse direction, from the full usable width and length of the sample (in accordance with ISO 2286-1).2 ISO 2016 All right
48、s reservedBS EN ISO 4674-1:2016ISO 4674-1:2016(E)Select test pieces for tearing in the transverse direction (i.e. tearing across longitudinal or warp threads in the case of woven substrates) so that their width is parallel to the longitudinal edge of the coated fabric.Select test pieces for tearing
49、in the longitudinal direction (i.e. tearing across transverse or weft threads in the case of woven substrates) so that their width is perpendicular to the longitudinal edge of the coated fabric.In each test piece, cut a tongue measuring 100 mm 50 mm as shown in Figures 1 and 2. Across each face of the test piece, mark a line ABCD at a distance of 50 mm from the end of the tongue as illustrated in Figure 2.Figure 1 Principle of tongued test pieceDimensions in millimetresKey1 mark indicating end of tearFig
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