1、BS ISO 1827:2016Rubber, vulcanized orthermoplastic Determinationof shear modulus and adhesionto rigid plates Quadruple-shear methodsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 1827:2016 BRITISH STANDARDNational forewordThis British Standard is the UK imple
2、mentation of ISO 1827:2016.It supersedes BS ISO 1827:2011 which is withdrawn.The UK participation in its preparation was entrusted to Tech-nical Committee PRI/22, Testing and analysis of rubber.A list of organizations represented on this committee can be obtained on request to its secretary.This pub
3、lication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016ISBN 978 0 580 92840 6 ICS 83.060 Compliance with a British Standard cannot confer immuni
4、ty from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2016.Amendments/Corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 1827:2016 ISO 2016Rubber, vulcanized or thermoplastic Determination o
5、f shear modulus and adhesion to rigid plates Quadruple-shear methodsCaoutchouc vulcanis ou thermoplastique Dtermination du module de cisaillement et de la force dadhrence des plaques rigides Mthodes du quadruple cisaillementINTERNATIONAL STANDARDISO1827Fifth edition2016-10-01Reference numberISO 1827
6、:2016(E)BS ISO 1827:2016ISO 1827:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechan
7、ical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, Switz
8、erlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 1827:2016ISO 1827:2016(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 24.1 Method A Determination of the shear modulus 24.2 Method B Determination of the adhesion 25 Apparatus . 2
9、6 Calibration 27 Test piece 27.1 Shape and dimensions 27.2 Preparation 37.2.1 Preparation of rigid plates . 37.2.2 Preparation using unmoulded rubber 37.2.3 Preparation using pre-moulded rubber 37.3 Number of test pieces . 48 Time interval between vulcanization and testing . 49 Conditioning 410 Temp
10、erature of test . 411 Procedure. 411.1 Method A 411.2 Method B 512 Expression of results 512.1 Method A 512.2 Method B 613 Test report . 613.1 For method A 613.2 For method B 7Annex A (normative) Calibration schedule . 8 ISO 2016 All rights reserved iiiContents PageBS ISO 1827:2016ISO 1827:2016(E)Fo
11、rewordISO (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 tech
12、nical 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
13、 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 different approval criteria needed for the different types of ISO documents should be noted. This document
14、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 be the subject of patent rights. ISO shall not be held responsible for identifying any or all such pa
15、tent 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/patents).Any trade name used in this document is information given for the convenience of users and does not
16、 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 Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.or
17、g/iso/foreword.html.The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee SC 2, Testing and analysis.This fifth edition cancels and replaces the fourth edition (ISO 1827:2011), which has been technically revised by changing symbols in 12.2.2.iv ISO 2016 A
18、ll rights reservedBS ISO 1827:2016INTERNATIONAL STANDARD ISO 1827:2016(E)Rubber, vulcanized or thermoplastic Determination of shear modulus and adhesion to rigid plates Quadruple-shear methodsWARNING Persons using this document should be familiar with normal laboratory practice. This document does n
19、ot 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 practices and to ensure compliance with any national regulatory conditions.IMPORTANT Certain procedures specified in this document might
20、involve the use or generation of substances, or the generation of waste, that could constitute a local environmental hazard. Reference should be made to appropriate documentation on safe handling and disposal after use.1 ScopeThis document specifies methods for the determination of the modulus in sh
21、ear and the strength of bonds of rubber to metal or other rigid plates, using rubber bonded between four parallel plates.Method A describes the determination of the modulus in shear.Method B describes the determination of the strength of the bonds.The methods are applicable primarily to test pieces
22、prepared in the laboratory under standard conditions, such as can be used to provide data for the development and control of rubber compounds and methods of manufacture of bonded shear units.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of t
23、heir content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 5893:2002, Rubber and plastics test equipment Tensile, flexural and compression t
24、ypes (constant rate of traverse) SpecificationISO 18899:2013, Rubber Guide to the calibration of test equipmentISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods3 Terms and definitionsFor the purposes of this document, the following terms and de
25、finitions apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp ISO 2016 All rights reserved 1BS ISO 1827:2016ISO 1827:2016
26、(E)3.1shear modulusapplied shear stress, calculated with respect to the bonded area of the rubber in a test piece, divided by the resultant shear strain in the direction of application of the stressNote 1 to entry: The shear strain () is half the measured deformation divided by the thickness of one
27、rubber block or element. The shear stress () is the applied force divided by twice the area of a bonded face of one rubber block or element.Note 2 to entry: The form of the test piece specified ensures that there is zero applied stress in the direction normal to the bonded surfaces, so that the defo
28、rmation can be regarded as simple shear.Note 3 to entry: This definition of shear modulus is sometimes referred to as the secant modulus.4 Principle4.1 Method A Determination of the shear modulusThe force required to obtain a range of predetermined shear strains of a unit of standard dimensions comp
29、rising four parallelepipeds of rubber symmetrically disposed and bonded to four parallel rigid plates is measured, the forces being parallel to the bonding surfaces and, as a rule, non-destructive, i.e. of maximum values appreciably lower than the bond strength.4.2 Method B Determination of the adhe
30、sionThe force required to cause the rupture of a unit as described for method A is measured.5 Apparatus5.1 Test machine, complying with the requirements of ISO 5893, capable of measuring force with an accuracy corresponding to class 1, as defined in ISO 5893:2002, and with a rate of traverse of the
31、moving grip of 5 mm/min (method A) or 50 mm/min (method B).The test machine shall include apparatus to measure the deformation of the rubber of the test piece to an accuracy of 0,02 mm.5.2 Fixtures, for holding the test pieces in the grips, provided with a universal joint to permit accurate centring
32、 of the line of action of the applied force.5.3 Environmental chamber, suitable for carrying out tests at the temperature chosen or specified (see Clause 10), conforming to the requirements of ISO 23529.6 CalibrationThe test apparatus shall be calibrated in accordance with the schedule given in Anne
33、x A.7 Test piece7.1 Shape and dimensionsThe test piece shall consist of four identical parallelepipedic rubber elements 4 mm 1 mm thick, 20 mm 5 mm wide and 25 mm 5 mm long, bonded on each of their two largest opposite faces to the mating faces of four rigid plates of the same width and of appropria
34、te lengths to obtain a symmetrical double-sandwich arrangement, means being provided at the free external end of each central plate to 2 ISO 2016 All rights reservedBS ISO 1827:2016ISO 1827:2016(E)enable it to be attached to a holding fixture. The rigid plates shall be of sufficient thickness to wit
35、hstand bending. A typical arrangement is shown in Figure 1.132Key1 two external plates2 two internal plates3 pin and fixture for tensile loadingFigure 1 Test piece arrangement7.2 Preparation7.2.1 Preparation of rigid platesRectangular rigid plates of suitable dimensions shall be prepared and treated
36、 in accordance with the requirements of a suitable adhesive system.7.2.2 Preparation using unmoulded rubberPrepared rigid plates and suitably sized rubber blanks shall be moulded either by compression or by transfer methods. The moulding shall be carried out using a time and temperature sequence app
37、ropriate to the rubber under test. At the conclusion of moulding, care shall be taken in removing the test pieces from the mould to avoid subjecting the adhered surfaces to undue stress.7.2.3 Preparation using pre-moulded rubberThe four rubber elements for each test piece may be cut from a pre-mould
38、ed sheet of uniform thickness or from a rubber product. In either case, care shall be taken to ensure that all four elements are equal in all their dimensions to within 0,1 mm.The elements shall be bonded to the prepared rigid plates using an adhesive system giving a high-modulus bond. ISO 2016 All
39、rights reserved 3BS ISO 1827:2016ISO 1827:2016(E)7.3 Number of test piecesThe test shall be carried out on three (method A) or five (method B) test pieces.8 Time interval between vulcanization and testingUnless otherwise specified for technical reasons, the time interval between vulcanization and te
40、sting shall be in accordance with ISO 23529.9 Conditioning9.1 When a test is made at one of the standard laboratory temperatures specified in ISO 23529, the test piece shall be maintained at that condition for at least 3 h before the test.9.2 When tests are made at subnormal or elevated temperatures
41、, the test pieces shall be maintained at the conditions of test for a period of time sufficient to reach temperature equilibrium with the test environment, or for the period of time required by the specification covering the material or product being tested.10 Temperature of testCarry out the test a
42、t one of the temperatures specified in ISO 23529. Unless otherwise specified, one of the standard laboratory temperatures shall be used.The same temperature shall be used for any series of tests intended to be comparable.11 Procedure11.1 Method A11.1.1 Determine the dimensions of the rubber elements
43、 in the test piece. Where applicable, the requirements of ISO 23529 shall be met.For test pieces prepared by vulcanization in a mould, the mould dimensions may be used to determine the area of each element. The thickness shall be determined, from measurements of the rigid plates and of the moulded t
44、est piece, by difference. For test pieces prepared from pre-moulded rubber elements, the dimensions of the elements shall be determined before bonding.11.1.2 After conditioning as specified in Clause 9, immediately mount the test piece in the test machine, taking care to ensure freedom of longitudin
45、al self-alignment with the direction of force application.For some applications, a mechanical conditioning procedure could be required. In such cases, apply five successive shear-loading cycles from 0 % to 30 %. During mechanical conditioning and subsequent testing, maintain the test piece at the te
46、st temperature.11.1.3 When the test piece is mounted in the test machine, immediately zero the force-measuring and deformation-measuring apparatus while maintaining a slight traction force; for example, 1 % of the expected maximum force. Immediately apply an increasing traction force at a rate of se
47、paration of the jaws of 5 mm/min 1 mm/min until a maximum shear strain of 30 % is reached, and record the force/deformation curve.4 ISO 2016 All rights reservedBS ISO 1827:2016ISO 1827:2016(E)11.2 Method B11.2.1 Determine the dimensions of the rubber elements in the test piece. Where applicable, the
48、 requirements of ISO 23529 shall be met.For test pieces prepared by vulcanization in a mould, the mould dimensions may be used to determine the area of each element. The thickness shall be determined, from measurements of the rigid plates and of the moulded test piece, by difference.For test pieces
49、prepared from pre-moulded rubber elements, the dimensions of the elements shall be determined before bonding.11.2.2 After conditioning as specified in Clause 9, immediately mount the test piece in the test machine, taking care to ensure freedom of longitudinal self-alignment with the direction of force application.Operate the test machine at a rate of separation of the jaws of 50 mm/min 5 mm/min until the test piece breaks. Record the maximum force.Recover the broken pieces and examine the failure
