1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 15977:2011Rubber or plastic coated fabrics Mechanical properties Determination of theelongation under load and theresidual deformationBS EN 15977:2011 BRITISH STANDARDNatio
2、nal forewordThis British Standard is the UK implementation of EN 15977:2011. The UK participation in its preparation was entrusted to TechnicalCommittee TCI/24, Physical testing of textiles.A list of organizations represented on this committee can be obtained on request to its secretary.This publica
3、tion does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 67968 1 ICS 59.080.40Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the
4、authority of the Standards Policy and Strategy Committee on 31 March 2011.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 15977:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15977 February 2011 ICS 59.080.40 English Version Rubber or plastic coated fabrics - Mechanica
5、l properties - Determination of the elongation under load and the residual deformation Supports textiles revtus de caoutchouc ou de plastique - Proprits mcaniques - Dtermination de lallongement sous charge et de la dformation rsiduelle Mit Kautschuk oder Kunststoff beschichtete Textilien - Mechanisc
6、he Eigenschaften - Bestimmung der Dehnung unter Last und der verbleibenden Verformung This European Standard was approved by CEN on 8 January 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
7、 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 exists in three official versions (English, French, German)
8、. 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 standards bodies of Austria, Belgium, Bulgaria, Croatia, C
9、yprus, 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 and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION
10、 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 15977:2011: EBS EN 15977:2011EN 15977:2011 (E) 2 Contents Page
11、 Foreword 3Introduction .41 Scope 52 Normative references 53 Principle 54 Apparatus .55 Preparation of test specimens .66 Mechanical loading test 67 Residual deformation after heat exposure and mechanical loading (optional) 78 Calculation 89 Test report 8BS EN 15977:2011EN 15977:2011 (E) 3 Foreword
12、This document (EN 15977:2011) has been prepared by 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 la
13、test by August 2011, and conflicting national standards shall be withdrawn at the latest by August 2011. 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 s
14、uch patent rights. 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, Hungar
15、y, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 15977:2011EN 15977:2011 (E) 4 Introduction This European Standard has been developed from the normative Annex
16、 C of EN 15619. BS EN 15977:2011EN 15977:2011 (E) 5 1 Scope This European standard describes the method of determination of the elongation under load and the residual deformation of coated fabrics. 2 Normative references The following referenced documents are indispensable for the application of thi
17、s document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 12280-1:1997, Rubber- or plastics- coated fabrics Accelerated ageing tests Part 1: Heat ageing EN ISO 2231, Rubber- or plasti
18、cs-coated fabrics Standard atmospheres for conditioning and testing (ISO 2231:1989) 3 Principle Marked strips of coated fabric are loaded for a specified duration; then after relaxation, the residual deformation is calculated based on the measurements of the distance between the marks of the strip b
19、efore and after the loading stage. The appropriate testing parameters are based on the use of the coated fabrics. Test specimen can be aged by heat exposure prior to the loading stage. 4 Apparatus 4.1 Ruler, calibrated metal ruler with 0,5 mm graduated marks. 4.2 Calliper, calibrated to 0,1 mm. 4.3
20、Loading device Only a manual loading device shall be used. An automatic device shall be avoided because of the force regulation of the machine. The clamping devices shall be positioned with the centre in line with the applied force. The clamps shall be capable of holding the test specimen without al
21、lowing it to slip and designed so that they do not cut or otherwise weaken the test specimen. The clamps shall consist of two jaws of steel plate. The clamping faces shall be in the same plane. Jaws shall preferably be (70 6) mm wide, but not less than the width of the test specimen. The loads consi
22、st of calibrated masses ensuring the achievement of the determined load. 4.4 Hot air oven, according to EN 12280-1. BS EN 15977:2011EN 15977:2011 (E) 6 5 Preparation of test specimens Three strips of 50 mm width shall be tested in both directions (for example: in warp and weft direction for woven co
23、ated fabric). The length of the strips shall be at least 200 mm or 400 mm, according to the selected testing parameters as determined in Table 1. Each strip shall be prepared as follows (in order to be sure that the final strips follow exactly the direction of the yarn): Cut a strip of: a) directly
24、(50 1) mm width for coated fabrics other than woven coated fabrics, or b) 55 mm width as precisely as possible in the direction of the yarns for woven coated fabrics; then, reduce the width of the strips from 55 to (50 1) mm, by removing some yarns on both sides in order to be sure that the yarns fo
25、llow continuously the length of the sample on both sides. Two small lines (perpendicular to the length of sample) shall be marked on each strip at a distance of (100 1) mm or (200 1) mm according to the selected testing parameters as determined in Table 1. The distance between these lines shall be m
26、easured at 0,1 mm (4.2) or at 0,5 mm (4.1) see instruction in Clause 6. 6 Mechanical loading test Tests shall be carried out in atmosphere B according to EN ISO 2231. Place the test specimen in the jaws so that the distance between each marked line and its respective clamp of the loading device is 5
27、0 mm. Set the testing parameters according to Table 1. Each specimen shall be loaded under the determined load during the determined load time. Just before removing the load, the length under load shall be measured between the two marks at 0,1 mm, when using the calliper (4.2), or at 0,5 mm, when us
28、ing the ruler (4.1) in order to calculate the elongation under load. Choose the length measurement devices (4.1 or 4.2) such as the resolution represents 1/10thof the measurement of the elongation. After removing the load, each specimen shall be left on a flat surface for the determined relaxation t
29、ime without any effort before measuring the residual length between the two marks. BS EN 15977:2011EN 15977:2011 (E) 7 Table 1 Testing parameters Testing parameters Coated fabrics intended forarchitectural structure, for example Coated fabrics intended for upholstery, for example Mark distance (200
30、1) mm (100 1) mm Length of the strips at least 300 mm, plus the length in relation to the type of the clamps at least 200 mm, plus the length in relation to the type of the clamps Determined load (10,00 0,01) daN (5,00 0,01) daN Load time (24 h 30) min (30 3) min Relaxation time 2 h 5 min (30 3) min
31、 Residual deformation and under load deformation Required Required Residual deformation and under load deformation after heat exposure and mechanical loading Optional (Clause 7) Not required 7 Residual deformation after heat exposure and mechanical loading (optional) After the preparation of the tes
32、t specimens (Clause 5) and before mechanical loading test (Clause 6), the samples shall be exposed 24 h 30 min at (80 2) C in a hot air oven according to EN 12280-1:1997, method 1. After removing from the oven, each sample shall be left on a table for 2 h in order to stabilize at atmospheric conditi
33、ons before testing according to Table 1. Calculation of the residual deformation after heat exposure and mechanical loading shall be carried out in accordance with formula (2) in Clause 8. The test report shall mention that the sample has been exposed to heat before testing according to the present
34、clause of this standard. BS EN 15977:2011EN 15977:2011 (E) 8 8 Calculation The elongation under load is calculated according the following to the formula. ()00100LLLEulul= , expressed in percentage (%) at the closest 0,1 % (1) where ulE is the elongation under load, ulL is the length of the coated f
35、abric before removing the determined load, 0L is the initial length. The residual deformation is calculated according the following formula. ()00100LLLRresidual= , expressed in percentage (%) at the closest 0,1 % (2) where R is the residual deformation, residualL is the length of the coated fabric a
36、fter determined relaxation time, 0L is the initial length. 9 Test report The test report shall include the following information: a) reference to this document; b) date of the test; c) identification of the product under test; d) if the tests specimens have been aged; e) testing parameters applied (
37、mark distance, length, load, loading time, relaxation time); f) results of the test (individuals and mean values of the elongation under load, of the residual deformation); g) if required, the result of the test of the residual deformation after heat exposure and mechanical loading; h) details of an
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