BS ISO 23529-2016 Rubber General procedures for preparing and conditioning test pieces for physical test methods《橡胶 物理试验方法用试件的准备和调节用一般规程》.pdf

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1、BS ISO 23529:2016Rubber General proceduresfor preparing and conditioningtest pieces for physical testmethodsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 23529:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 23529:

2、2016. It supersedes BS ISO 23529:2010 which is withdrawn. The UK participation in its preparation was entrusted to TechnicalCommittee PRI/22, Testing and analysis of rubber.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purp

3、ort 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 92763 8ICS 83.060Compliance with a British Standard cannot confer immunity fromlegal obligations.T

4、his British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2016.Amendments/Corrigenda issued since publicationDate Text affectedBS ISO 23529:2016 ISO 2016Rubber General procedures for preparing and conditioning test pieces for physical test me

5、thodsCaoutchouc Procdures gnrales pour la prparation et le conditionnement des prouvettes pour les mthodes dessais physiquesINTERNATIONAL STANDARDISO23529Third edition2016-11-01Reference numberISO 23529:2016(E)BS ISO 23529:2016ISO 23529:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUM

6、ENT 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 mechanical, including photocopying, or posting on the internet or an intranet, without prior written p

7、ermission. 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, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 23529:2016ISO 2

8、3529:2016(E)Foreword v1 Scope . 12 Normative references 13 Terms and definitions . 14 Identification and record keeping . 15 Standard laboratory conditions . 25.1 Standard laboratory temperature 25.2 Standard laboratory humidity . 25.3 Other conditions 26 Storage of samples and test pieces 27 Prepar

9、ation of test pieces . 37.1 Test piece thickness 37.2 Thickness adjustment . 37.2.1 General 37.2.2 Techniques 37.2.3 Equipment for test piece preparation . 47.3 Test piece cutters 57.3.1 General 57.3.2 Fixed-blade cutters 57.3.3 Replaceable-blade cutters . 67.3.4 Rotary cutters . 67.4 Maintenance of

10、 cutters. 67.5 Preparation of test pieces by moulding . 67.5.1 Test sheets . 67.5.2 Test pieces . 67.5.3 Thermoplastic materials . 67.6 Preparation of unvulcanized test pieces . 78 Conditioning 78.1 General . 78.2 Conditioning times for subnormal or elevated temperatures . 79 Measurement of the dime

11、nsions of test pieces . 79.1 Method A For dimensions less than 30 mm . 79.2 Method B For dimensions of 30 mm and up to and including 100 mm . 89.3 Method C For dimensions over 100 mm . 89.4 Method D Non-contact method . 810 Conditions of test . 910.1 Duration of test . 910.2 Temperature and humidity

12、 910.2.1 Standard laboratory temperature and humidity . 910.2.2 Other test temperatures 911 Test chambers 1011.1 General requirements for temperature-controlled chambers 1011.2 Chambers operating at elevated temperatures .1111.2.1 Chambers with gaseous heat-transfer media 1111.2.2 Chambers with liqu

13、id heat-transfer media 1111.2.3 Fluidized beds .1111.3 Chambers operating at subnormal temperatures .1111.3.1 Mechanically refrigerated units . 1111.3.2 Solid carbon dioxide units (direct-cooling type) 1111.3.3 Solid carbon dioxide units (indirect-cooling type) .11 ISO 2016 All rights reserved iiiCo

14、ntents PageBS ISO 23529:2016ISO 23529:2016(E)11.3.4 Packaged refrigeration units 1111.3.5 Liquid nitrogen .1112 Test report 12Annex A (normative) Conditioning times for rubber test pieces .13Bibliography .16iv ISO 2016 All rights reservedBS ISO 23529:2016ISO 23529:2016(E)ForewordISO (the Internation

15、al 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 committee has been e

16、stablished 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 electrotechnical standard

17、ization.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 in accordance

18、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. Details of an

19、y 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 an endorsement

20、.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/foreword.html.The co

21、mmittee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee SC 2, Testing and analysis.This third edition cancels and replaces the second edition (ISO 23529:2010), which has been technically revised as follows. Clause 2 and Clause 3 have been added. Rubber solvent ha

22、s been added as a textile-removing liquid (7.2.2.1). Description on preparation of unvulcanized test pieces has been added (7.6). 7.3.1 and 7.3.2 have been modified. Information on suitable callipers has been added (Note to 9.2). The format of Table A.1, Table A.2 and Table A.3 has been improved. IS

23、O 2016 All rights reserved vBS ISO 23529:2016BS ISO 23529:2016Rubber General procedures for preparing and conditioning test pieces for physical test methodsWARNING 1 Persons using this document should be familiar with normal laboratory practice. This document does not purport to address all of the s

24、afety 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.WARNING 2 Certain procedures specified in this document might involve the use or generation of s

25、ubstances, 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 general procedures for the preparation, measurement, marking, storage, and condition

26、ing of rubber test pieces for use in physical tests specified in other International Standards, and the preferred conditions to be used during the tests. Special conditions, applicable to a particular test or material or simulating a particular climatic environment, are not included, nor are special

27、 requirements for testing whole products.This document also specifies the requirements for the time interval to be observed between forming and testing of rubber test pieces and products. Such requirements are necessary to obtain reproducible test results and to minimize disagreements between custom

28、er and supplier.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced docu

29、ment (including any amendments) applies.ISO 1795, Rubber, raw natural and raw synthetic Sampling and further preparative procedures3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 1382 apply.ISO and IEC maintain terminological databases for use in stan

30、dardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp4 Identification and record keepingRecords shall be kept of the identity of each test piece so that it is identifiable with the sample su

31、pplied and such that all the relevant details of preparation, storage, conditioning and measurement are traceable to each individual test piece.Each sample or test piece shall be individually identifiable by marking or segregation at each stage of its preparation and testing. Where marking is used a

32、s the method of identification, the markings shall be sufficiently durable to ensure that the test piece or sample remains identifiable until discarded. Where grain effects can be significant, the direction of the grain shall be identified on each sample or test piece.INTERNATIONAL STANDARD ISO 2352

33、9:2016(E) ISO 2016 All rights reserved 1BS ISO 23529:2016ISO 23529:2016(E)The method of marking shall not affect the properties of the sample or test piece and shall avoid significant surfaces, i.e. surfaces which are to be directly tested (e.g. in abrasion tests) or surfaces at which a fracture ter

34、minates in the test (e.g. tear or tensile tests).5 Standard laboratory conditions5.1 Standard laboratory temperatureThe standard laboratory temperature shall be either (23 2) C or (27 2) C in accordance with national practice. If a closer tolerance is required, it shall be 1 C.NOTE The temperature 2

35、3 C is normally the standard laboratory temperature in temperate countries and 27 C is normally the standard laboratory temperature in tropical and subtropical countries.5.2 Standard laboratory humidityIf control of both temperature and humidity is necessary, they shall be selected from Table 1.Tabl

36、e 1 Preferred relative humidityTemperature CRelative humidity %Tolerance on humidity %23 5010a27 65aIf a tighter tolerance is needed, 5 % can be specified.5.3 Other conditionsWhen control of temperature and humidity is not necessary, the prevailing ambient temperature and humidity can be used. The l

37、atter conditions shall be used where standard laboratory conditions cannot easily be achieved.6 Storage of samples and test pieces6.1 Samples awaiting the preparation of test pieces and test pieces prior to conditioning shall be stored under conditions which minimize the possibility of degradation b

38、y ambient conditions, such as heat or light, or of contamination, e.g. cross-contamination from other samples.6.2 For all tests, the minimum time between forming the material and testing shall be 16 h. When test pieces are cut from a product or where a whole product, e.g. bridge bearings, is tested,

39、 considerably more time than 16 h between forming the material and testing can be necessary. In these cases, the minimum time shall be as given in the product specification or relevant test method.6.3 For non-product tests, the maximum time between forming the material and testing shall be 4 weeks a

40、nd, for evaluations intended to be comparable, the tests shall be carried out, as far as possible, after the same time interval.6.4 For product tests, whenever possible, the time between forming the product and testing shall not exceed 3 months. In other cases, tests shall be made within 2 months of

41、 the date of receipt of the product by the customer.6.5 These requirements relate only to initial rubber material tests and to product tests at both the initial and delivery stage. Special tests for other purposes can be carried out at any time, e.g. for the 2 ISO 2016 All rights reservedBS ISO 2352

42、9:2016ISO 23529:2016(E)purposes of process control or to evaluate the influence of abnormal storage conditions on a product. Such reasons shall be clearly stated in the test report.6.6 In the case of unvulcanized compound, batches shall be conditioned for between 2 h and 24 h at one of the standard

43、laboratory temperatures specified in 5.1, preferably in a closed container to prevent absorption of moisture from the air, or in a room in which the relative humidity is controlled at (50 5) %.7 Preparation of test pieces7.1 Test piece thicknessThe test piece thickness shall be as specified in the r

44、elevant test method. However, the test piece thicknesses other than those in Table 2 may be specified where it is necessary to retain the original surface of the sample.Table 2 Preferred test piece thicknessesTest piece thickness mmTolerance mm1,0 0,12,0 0,24,0 0,26,3 0,312,5 0,57.2 Thickness adjust

45、ment7.2.1 GeneralWhen material, particularly from products, requires testing, but is not available in a thickness recommended in Table 2, procedures are required to adjust the thickness to within the prescribed limits. Recommended procedures are given in 7.2.2. In most cases, thickness adjustments s

46、hall be made on the material before the cutting of the test pieces.For most rubbers, splitting or buffing modifies the surface. Hence, when a surface-dependent property is being measured, thicknesses other than those in Table 2 might need to be specified in order to retain the original surface.7.2.2

47、 Techniques7.2.2.1 Removal of textiles combined with the rubberThe separation shall preferably avoid the use of a liquid, which causes swelling. If this is not possible, a nontoxic liquid of low boiling point, such as isooctane (2,2,4-trimethylpentane) or rubber solvent (gasoline), can be used to we

48、t the contacting surfaces. Care shall be taken to avoid excessive stretching of the rubber by separating a little at a time while the rubber is gripped near the point of separation. If a liquid is used, the rubber shall be placed so as to permit free evaporation of the liquid, and time shall be allo

49、wed for the complete evaporation of the liquid, preferably at least 16 h, before the test pieces are cut and tested.7.2.2.2 Cutting techniquesWhen it is necessary to remove a considerable thickness of rubber or to produce a number of slices from a thick piece of rubber, cutting equipment such as that specified in 7.2.3.1 and 7.2.3.2 shall be used. ISO 2016 All rights reserved 3BS ISO 23529:2016ISO 23529:2016(E)7.2.2.3 Abrading techniquesWhen it is necessary to remove surface unevenness, such as fab