1、March 2017 English price group 12No 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).ICS 59.080.40!%c+#“2640800www.din.deDI
2、N EN ISO 1421Rubber or plasticscoated fabrics Determination of tensile strength and elongation at break (ISO 1421:2016);English version EN ISO 1421:2016,English translation of DIN EN ISO 1421:2017-03Mit Kautschuk oder Kunststoff beschichtete Textilien Bestimmung der Zugfestigkeit und der Bruchdehnun
3、g (ISO 1421:2016);Englische Fassung EN ISO 1421:2016,Englische bersetzung von DIN EN ISO 1421:2017-03Supports textiles revtus de caoutchouc ou de plastique Dtermination de la force de rupture et de lallongement la rupture (ISO 1421:2016);Version anglaise EN ISO 1421:2016,Traduction anglaise de DIN E
4、N ISO 1421:2017-03SupersedesDIN EN ISO 1421:199808www.beuth.deDocument comprises 21 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.03.17 DIN EN ISO 1421:2017-03 2 A comma is used as the decimal marker. National foreword This d
5、ocument (EN ISO 1421:2016) has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber products” in collaboration with Technical Committee CEN/TC 248 “Textiles and textile products” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was DIN-Normenau
6、sschuss Kunststoffe (DIN Standards Committee Plastics), Working Committee NA 054-04-04 AA Kunststoff-Folien und kunststoffbeschichtete Flchengebilde (Kunstleder); allgemeine Eigenschaften. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO
7、 2231:1989 DIN EN ISO 2231:1995-06 ISO 2286-2 DIN EN ISO 2286-2 ISO 7500-1 DIN EN ISO 7500-1 Amendments This standard differs from DIN EN ISO 1421:1998-08 as follows: a) in Clause 3, gauge length and reference points have been added and Figures 1, 2 and 3 have been moved to clarify the definitions;
8、b) the title of Table 5 has been modified; c) Clause 6 has been subdivided in two subclauses and conditions have been clarified respectively by referring to the particulars specified in ISO 2231:1989; d) a new clause has been added to specify the time-interval between manufacture and testing; e) in
9、8.1, two narrower widths of 10 mm and 30 mm have been added for test piece and the pre-tension forces have been revised accordingly. The procedure for the test pieces with reference mark has been incorporated; f) in 8.2, the procedure for handling abnormal test results has been modified; g) the stan
10、dard has been editorially revised. Previous editions DIN EN ISO 1421: 1998-08 DIN EN ISO 1421:2017-03 3 National Annex NA (informative) Bibliography DIN EN ISO 2231:1995-06, Rubber- or plastics-coated fabrics Standard atmospheres for conditioning and testing (ISO 2231:1989) DIN EN ISO 2286-2, Rubber
11、- or plastics-coated fabrics Determination of roll characteristics Part 2: Methods for determination of total mass per unit area, mass per unit area of coating and mass per unit area of substrate DIN EN ISO 7500-1, Metallic materials Calibration and verification of static uniaxial testing machines P
12、art 1: Tension/compression testing machines Calibration and verification of the force-measuring system DIN EN ISO 1421:2017-03 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1421 December 2016 ICS 59.080.40 Supersedes EN ISO 1421:1998English Version Rubbe
13、r- or plastics-coated fabrics - Determination of tensile strength and elongation at break (ISO 1421:2016)Supports textiles revtus de caoutchouc ou de plastique - Dtermination de la force de rupture et de lallongement la rupture (ISO 1421:2016) Mit Kautschuk oder Kunststoff beschichtete Textilien - B
14、estimmung der Zugfestigkeit und der Bruchdehnung (ISO 1421:2016) This European Standard was approved by CEN on 17 September 2016. 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 standa
15、rd 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
16、 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 Repub
17、lic, Denmark, Estonia, Finland, Former 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 United Kingdom. EUROPEAN
18、COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1421:2016 EEurope
19、an foreword .31 Scope . 52 Normative references 53 Terms and definitions . 54 Principle 95 Apparatus and reagents 96 Atmosphere for conditioning and testing . 106.1 For conditioning 106.2 For testing 107 Time-interval between manufacture and testing 108 Method 1: Strip test method 108.1 Sampling and
20、 preparation of test pieces . 108.2 Procedure . 118.2.1 Mounting the test piece in place 118.2.2 Operation . 138.2.3 Slippage . 138.2.4 Jaw breaks and the breaks outside the reference marks . 138.2.5 Test on wet test pieces . 138.3 Calculation and expression of results. 148.4 Test report 149 Method
21、2: Grab test method 149.1 Sampling and preparation of test pieces . 149.2 Procedure . 159.2.1 Mounting the test piece in place 159.2.2 Operation . 159.2.3 Slippage .159.2.4 Jaw breaks.159.2.5 Test on wet test pieces .159.3 Calculation and expression of results. 179.4 Test report 17Contents PageDIN E
22、N ISO 1421:2017-03 EN ISO 1421:2016 (E) 2Foreword .4European foreword This document (EN ISO 1421:2016) has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber products“ in collaboration with Technical Committee CEN/TC 248 “Textiles and textile products” the secretariat of which is held
23、 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 June 2017, and conflicting national standards shall be withdrawn at the latest by June 2017. Attention is drawn to the possibility that som
24、e 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 ISO 1421:1998. According to the CEN-CENELEC Internal Regulations, the national standards organizations o
25、f the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Net
26、herlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 1421:2016 has been approved by CEN as EN ISO 1421:2016 without any modification. DIN EN ISO 1421:2017-03 EN ISO 1421:2016 (E)3 ForewordISO (t
27、he 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 commit
28、tee 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 electrotech
29、nical 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 different approval criteria needed for the different types of ISO documents should be noted. This document was drafted
30、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 be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
31、 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/patents).Any trade name used in this document is information given for the convenience of users and does not constitute
32、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 Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/forewo
33、rd.html.The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses).This third edition cancels and replaces the second edition (ISO 1421:1998), which has been technically revised. The changes are as follows. In Clause 3, gauge
34、length and reference points have been added and Figures 1, 2, and 3 have been moved to clarify the definitions. The title of Clause 5 has been changed. Clause 6 has been subdivided in two subclauses and conditions have been clarified respectively by referring to the particulars specified in ISO 2231
35、:1989. A new clause has been added to specify the time-interval between manufacture and testing. In 8.1, two narrower widths of 10 mm and 30 mm have been added for test piece and the pre-tension forces have been revised accordingly. The procedure for the test pieces with reference mark has been inco
36、rporated. In 8.2, the procedure for handling abnormal test results has been modified.DIN EN ISO 1421:2017-03 EN ISO 1421:2016 (E) 4 WARNING Persons using this International Standard should be familiar with normal laboratory practice. This International Standard does not purport to address all of the
37、 safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions.1 ScopeThis International Standard specifies two methods for the determination of the tensile
38、strength of fabrics coated with rubber or plastics. Method 1 the strip test method, which is a method for the determination of tensile strength and elongation at break. Method 2 the grab test method, which is a method for the determination of tensile strength only.The methods apply to test pieces in
39、 equilibrium with specific standard atmospheres for testing and to wet test pieces. Both methods require the use of a constant rate of extension (CRE) tensile-testing machine.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indis
40、pensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 2231:1989, Rubber- or plastics-coated fabrics Standard atmospheres for conditioning and testingISO 2286-2,
41、Rubber- or plastics-coated fabrics Determination of roll characteristics Part 2: Methods for determination of total mass per unit area, mass per unit area of coating and mass per unit area of substrateISO 7500-1, Metallic materials Calibration and verification of static uniaxial testing machines Par
42、t 1: Tension/compression testing machines Calibration and verification of the force-measuring system.3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1constant rate of extensionCREmeans of conducting a tensile test in which the rate of increase in
43、 the length of the test piece is uniform with timeNote 1 to entry: The rate of increase of the force is dependent upon the extension characteristics of the test piece.DIN EN ISO 1421:2017-03 EN ISO 1421:2016 (E)5 3.2elongationextensionEincrease in length of a test pieceNote 1 to entry: It is express
44、ed in units of length, e.g. cm or mm.3.3elongation at breakelongation (3.2) of a test piece corresponding to the force at the breaking pointNote 1 to entry: See Figure 1. It is usually expressed as a percentage of the nominal gauge length (3.9).Y12KeyX elongation, EY force1 maximum force2 force at b
45、reak3 elongation at maximum force4 elongation at breakFigure 1 Tensile force at break3.4elongation at maximum forceelongation (3.2) of a test piece produced by the maximum forceNote 1 to entry: See Figure 1, Figure 2 and Figure 3.DIN EN ISO 1421:2017-03 EN ISO 1421:2016 (E) 6 1YKeyX elongation, EY f
46、orce1 maximum force2 elongation at maximum forceFigure 2 Maximum force at break3.5force at breaktensile force recorded at the moment of breakNote 1 to entry: See Figure 1.Note 2 to entry: Figure 3 corresponds to the rupture of one of the elements constituting the coated fabric. Typical examples are:
47、a) a “rigid” polymer layer on an extensible fabric: rupture of the polymer layer;b) a very extensible, thick polymer layer on a weak, less extensible fabric or nonwoven: rupture of the woven fabric or of the nonwoven.DIN EN ISO 1421:2017-03 EN ISO 1421:2016 (E)7 Y13KeyX elongation, EY force1 maximum
48、 force2 elongation at maximum force3 rupture of one elementFigure 3 Rupture of one element of a coated fabric3.6gauge lengthlength at a test piece prior to the addition of the pre-tension loaded, measured either from nip to nip of the jaws of the holding clamps or between the reference points (3.11)3.7grab testtensile strength test in which onl
