BS ISO 4662-2017 Rubber vulcanized or thermoplastic Determination of rebound resilience《硫化橡胶和热塑性橡胶 回弹性的测定》.pdf

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1、Rubber, vulcanized or thermoplastic Determination of rebound resilienceBS ISO 4662:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06 ISO 2017Rubber, vulcanized or thermoplastic Determination of rebound resilienceCaoutchouc vulcanis ou thermoplastique Dtermination

2、de la rsilience de rebondissementINTERNATIONAL STANDARDISO4662Fourth edition2017-06Reference numberISO 4662:2017(E)National forewordThis British Standard is the UK implementation of ISO 4662:2017. It supersedes BS ISO 4662:2009, which is withdrawn.The UK participation in its preparation was entruste

3、d to Technical 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 publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application

4、. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 89165 6ICS 83.060Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on

5、30 June 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS ISO 4662:2017 ISO 2017Rubber, vulcanized or thermoplastic Determination of rebound resilienceCaoutchouc vulcanis ou thermoplastique Dtermination de la rsilience de rebondissementINTERNATIONAL STANDARDISO4

6、662Fourth edition2017-06Reference numberISO 4662:2017(E)BS ISO 4662:2017ISO 4662:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise i

7、n any form or by any means, electronic or mechanical, 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 B

8、landonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 4662:2017ISO 4662:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no

9、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 permission. Permission can be requested from either ISO at the address below or ISOs member

10、 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.orgISO 4662:2017(E)Foreword vIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 14 Princip

11、le 25 Pendulum method . 25.1 Apparatus 25.1.1 General 25.1.2 Oscillatory device 35.1.3 System for following the motion of the hammer 35.1.4 Test piece holder 35.1.5 Temperature control . 45.1.6 Adjustment of oscillatory device 55.2 Test pieces . 65.2.1 Preparation . 65.2.2 Dimensions . 75.2.3 Measur

12、ement of dimensions . 75.2.4 Number of test pieces 75.2.5 Time-interval between forming and testing 75.2.6 Conditioning 75.3 Temperature of test . 75.4 Procedure 75.4.1 Thermal conditioning and mounting of test piece . 75.4.2 Mechanical conditioning of test piece . 85.4.3 Measurement of rebound resi

13、lience . 85.4.4 Calculation and expression of results 85.5 Precision . 85.6 Test report . 86 Tripsometer method 96.1 Apparatus 96.1.1 General 96.1.2 Pendulum 106.1.3 System for following the motion of the disc 106.1.4 Test piece holder .116.1.5 Temperature control 126.1.6 Adjustment of oscillatory d

14、evice . 136.2 Test pieces 156.2.1 Preparation 156.2.2 Dimensions 156.2.3 Measurement of dimensions 156.2.4 Number of test pieces .156.2.5 Time-interval between forming and testing .156.2.6 Conditioning . 156.3 Temperature of test 166.4 Procedure . 166.4.1 Thermal conditioning and mounting of test pi

15、ece 166.4.2 Mechanical conditioning of test piece 166.4.3 Measurement . 166.4.4 Calculation and expression of results .166.5 Precision 176.6 Test report 17 ISO 2017 All rights reserved iiiContents PageBS ISO 4662:2017ISO 4662:2017(E)Annex A (informative) Use of non-standard test pieces 18Annex B (in

16、formative) Apparatus designs .21Annex C (informative) Mounting system for the disc of the tripsometer 22Annex D (informative) Precision .24Annex E (informative) Calculation method for the tripsometers impact velocity .28Bibliography .31iv ISO 2017 All rights reservedBS ISO 4662:2017ISO 4662:2017(E)A

17、nnex A (informative) Use of non-standard test pieces 18Annex B (informative) Apparatus designs .21Annex C (informative) Mounting system for the disc of the tripsometer 22Annex D (informative) Precision .24Annex E (informative) Calculation method for the tripsometers impact velocity .28Bibliography .

18、31iv ISO 2017 All rights reserved ISO 4662:2017(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 carried out through ISO technical committees. Each

19、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 work. ISO collaborates closely with the International

20、 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 different approval criteria needed for the different ty

21、pes 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 be the subject of patent rights. ISO shall not

22、 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/ patents).Any trade name used in this document is i

23、nformation given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organizatio

24、n (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 2, Testing and analysis.This fourth edition cancels and replaces the third ed

25、ition (ISO 4662:2009), which has been technically revised to add the calculation of the impact velocity for tripsometer method (Annex E). It also incorporates the Technical Corrigendum ISO 4662:2009/Cor.1:2010. ISO 2017 All rights reserved vBS ISO 4662:2017ISO 4662:2017(E)IntroductionWhen rubber is

26、deformed, an energy input is involved; part of which is returned when the rubber returns to its original shape. That part of the energy which is not returned as mechanical energy is dissipated as heat in the rubber.The ratio of the energy returned to the energy applied is termed the resilience. When

27、 the deformation is an indentation due to a single impact, this ratio is termed the rebound resilience.The value of the rebound resilience for a given material is not a fixed quantity, but varies with temperature, strain distribution (determined by the type of indentor and test piece and by their di

28、mensions), strain rate (determined by the velocity of the indentor), strain energy (determined by the mass and velocity of the indentor) and strain history. Strain history is particularly important in the case of filler-loaded polymers, where the stress-softening effect necessitates a mechanical con

29、ditioning.This variation of resilience with conditions is an inherent property of polymers, which can therefore only be fully evaluated if tests are carried out over a wide range of conditions. The factors described can have a different quantitative influence on resilience. While temperature can cri

30、tically affect resilience near transition regions of the material tested, factors connected with time and amplitude of indentation have only moderate effects, and fairly wide tolerances may be admissible for them.Ideally, rebound resilience should be measured on a test piece the back surface of whic

31、h is bonded to a rigid support in order to avoid friction losses due to slippage during the impact. Since the use of bonded test pieces is impractical in many applications, unbonded test pieces are used. Frictional losses are avoided by secure clamping of the test piece.To approach these ideal condi

32、tions in a practical apparatus, limitations are put upon the hardness (see ISO 48) of the rubber that can be tested: on the hard side to avoid unusual requirements of rigidity in the apparatus; on the soft side to avoid difficulties in clamping.If a defined set of mechanical conditions and an approp

33、riate apparatus are selected, a standard value of rebound resilience at any temperature can be obtained with a satisfactory degree of reproducibility.vi ISO 2017 All rights reservedBS ISO 4662:2017ISO 4662:2017(E)IntroductionWhen rubber is deformed, an energy input is involved; part of which is retu

34、rned when the rubber returns to its original shape. That part of the energy which is not returned as mechanical energy is dissipated as heat in the rubber.The ratio of the energy returned to the energy applied is termed the resilience. When the deformation is an indentation due to a single impact, t

35、his ratio is termed the rebound resilience.The value of the rebound resilience for a given material is not a fixed quantity, but varies with temperature, strain distribution (determined by the type of indentor and test piece and by their dimensions), strain rate (determined by the velocity of the in

36、dentor), strain energy (determined by the mass and velocity of the indentor) and strain history. Strain history is particularly important in the case of filler-loaded polymers, where the stress-softening effect necessitates a mechanical conditioning.This variation of resilience with conditions is an

37、 inherent property of polymers, which can therefore only be fully evaluated if tests are carried out over a wide range of conditions. The factors described can have a different quantitative influence on resilience. While temperature can critically affect resilience near transition regions of the mat

38、erial tested, factors connected with time and amplitude of indentation have only moderate effects, and fairly wide tolerances may be admissible for them.Ideally, rebound resilience should be measured on a test piece the back surface of which is bonded to a rigid support in order to avoid friction lo

39、sses due to slippage during the impact. Since the use of bonded test pieces is impractical in many applications, unbonded test pieces are used. Frictional losses are avoided by secure clamping of the test piece.To approach these ideal conditions in a practical apparatus, limitations are put upon the

40、 hardness (see ISO 48) of the rubber that can be tested: on the hard side to avoid unusual requirements of rigidity in the apparatus; on the soft side to avoid difficulties in clamping.If a defined set of mechanical conditions and an appropriate apparatus are selected, a standard value of rebound re

41、silience at any temperature can be obtained with a satisfactory degree of reproducibility.vi ISO 2017 All rights reserved Rubber, vulcanized or thermoplastic Determination of rebound resilienceWARNING 1 Persons using this document should be familiar with normal laboratory practice. This document doe

42、s 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 practices and to ensure compliance with any national regulatory conditions.WARNING 2 Certain procedures specified in this document mig

43、ht 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 two methods for determining the rebound resilie

44、nce of rubber the hardness of which lies between 30 IRHD and 85 IRHD. They are the pendulum method and the tripsometer method.With the pendulum method, a mass with a spherical end impacts a flat test piece, firmly held but free to bulge. The kinetic energy of the impacting mass is measured immediate

45、ly before and after impact.With the tripsometer method, a flat test piece is impacted by a hemisphere mounted on the periphery of a disc which is supported on an axle and caused to rotate by an off-axis mass. The kinetic energy of the impacting mass is measured immediately before and after impact.2

46、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 document (including an

47、y amendments) applies.ISO 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 definitions apply.ISO and IEC maintain terminological databases for use in standardization

48、at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp3.1rebound resilienceratio between the returned and the applied energy of a moving mass which impacts a test pieceNote 1 to entry: It

49、is usually expressed as a percentage.INTERNATIONAL STANDARD ISO 4662:2017(E) ISO 2017 All rights reserved 1BS ISO 4662:2017ISO 4662:2017(E)4 PrincipleA test piece with plane, parallel surfaces is impacted on one surface by a linearly or circularly oscillating body, the impacting surface of which is spherical. The rebound resilience is determined by measurement of the energy of the impacting mass immediately before and after impact.NOTE Conventionally, the input and output energies of the moving mass have been deter