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1、BRITISH STANDARD BS ISO 2230:2002 Rubber products Guidelines for storage ICS 83.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:42:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 2230:2002 This British Standard
2、, having been prepared under the direction of the Materials and Chemicals Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 20 May 2002 BSI 20 May 2002 ISBN 0 580 39658 4 National foreword This British Standard reproduces verbat
3、im ISO 2230:2002 and implements it as the UK national standard. It supersedes BS 3574:1989 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/73, Industrial rubber products, which has the responsibility to: A list of organizations represented on this
4、 committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or
5、 by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer i
6、mmunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate t
7、hem in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 11 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since public
8、ation Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:42:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD ISO 2230 Second edition 2002-04-15 Reference number ISO 2230:2002(E) OSI 2002 Rubber products Guidelines for storage Produits base dlastomres
9、Lignes directrices pour le stockage Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:42:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 2230:2002(E) ii ISO 2002 Ar llithgr seresvde FDP dicslaimre This FDP fam elitnoc yt deddebme niayfep.seca In roccatiw ecnadA hycilop gnisnecil sebod, thf
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14、4 47 2290 9 74 E-liam copyrightsio.ch Web wwwsi.oc.h Prni detni Sztiwerldna Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:42:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 2230:2002(E) ISO 2002 r llAithgs reservde iii Contents Page 1Scope . 1 2Normative references . 1 3Terms and defin
15、itions 1 4Classification of rubber types according to their relative susceptibility to deterioration 2 5Packaging . 4 6Storage . 5 7Inspection, testing and recording of data during storage 7 Annex ARecommendations for inspection and testing of specific products . 10 Bibliography. 11 Licensed Copy: s
16、heffieldun sheffieldun, na, Mon Nov 27 07:42:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 2230:2002(E) iv ISO 2002 Ar llithgr seresvde Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of prepar
17、ing International Standards is normally carried out through ISO technical committees. Each 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 li
18、aison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft Internatio
19、nal Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Sta
20、ndard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 2230 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses). This second edition c
21、ancels and replaces the first edition (ISO 2230:1973), which has been technically revised. Annex A of this International Standard is for information only. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:42:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 2230:2002(E) ISO 2002 r llAithgs r
22、eservde v Introduction Many rubber products and components are stored for long periods before being put into service, and thus it is important they are stored in conditions that minimize unwanted changes in properties. Such changes may result from degradation, in which case they may include excessiv
23、e hardening, softening, cracking, crazing and other surface effects. Other changes may be caused by deformation, contamination or mechanical damage. In preparing this revision, the requirements of different users and the multiplicity of rubber types and products have been factors of major considerat
24、ion. It is recognized that some rubbers are more susceptible than others to deterioration by such factors as heat, light, ozone, oxygen and humidity. Exposure to these factors should therefore be minimized in order to extend storage life, and to do so a system of storage control, proper packaging an
25、d periodic inspection becomes necessary. A system of recording, for the proper maintenance of storage and inspection data, is included to assist in verifying that the provisions of this standard are maintained in association with common elements associated with product specifications and their verif
26、ication through conducting of statistically significant methods of test. Further guidance can be found, to supplement the information contained in this standard, in ISO 9000, ISO 9001 and ISO 9004. In this standard, only the causes of generation of deleterious influences such as ozone and radiation
27、are mentioned as being prohibited. Methods for measuring concentrations or intensities of these are not within the scope of this standard. Recommendations are included in annex A for the inspection and testing of specific products. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:42:58 GMT+
28、00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:42:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARDISO 2230:2002(E) ISO 2002 All rights reserved 1 Rubber products Guidelines for storage WARNING Persons using this International Stan
29、dard should be familiar with normal laboratory practice. This standard does 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 regulat
30、ory conditions. 1Scope This International Standard gives guidelines for the inspection, recording procedures, packaging and storage of products, assemblies and components made from vulcanized or thermoplastic rubber prior to being put into circulation. It is applicable to both solid and cellular rub
31、ber products prepared from dry raw rubber, latex or other sources. It is not intended for use with raw rubber in bale, liquid (solution or emulsion) or particulate form, storage guidance for which is given in ISO 7664. The recommendations for packaging form an integral part of the controlled storage
32、 procedure, as well as providing means of identifying the material and product. 2Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or r
33、evisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the no
34、rmative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 1629:1995, Rubber and latices Nomenclature ISO 4591:1992, Plastics Film and sheeting Determination of average thickness of a sample, and average thickness and yield of a ro
35、ll, by gravimetric techniques (gravimetric thickness) 3Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 initial storage period the maximum period, starting from the time of manufacture, for which a rubber product, appropriately pac
36、kaged, may be stored under specified conditions before a sample needs to be inspected or re-tested 3.2 extension storage period the period for which a rubber product, appropriately packaged, may be stored after the initial storage period, before further inspection and re-testing is necessary 1 1 Lic
37、ensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:42:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 2230:2002(E) 2 ISO 2002 All rights reserved 3.3 storage life the maximum period of time that a rubber product, appropriately packaged, may be stored, after which time it is regarded as unservi
38、ceable for the purposes for which it was originally manufactured NOTEThe storage life of a rubber product is influenced by its shape and size as well as its composition, with thick products usually undergoing slower change due to degradation than thinner ones. 3.4 assembly any product or component c
39、ontaining more than one element, one or more of which is made of rubber 3.5 ageing the irreversible change of material properties during exposure to an environment, for a period of time 4Classification of rubber types according to their relative susceptibility to deterioration 4.1General Unless othe
40、rwise specified in the product specification, rubber products should be classified (for the purpose of storage) in terms of the relative susceptibility to deterioration of the rubber type used, as follows: Group A: rubbers with moderate susceptibility to deterioration by ageing, as listed in Table 1
41、. The following additional rubbers are classified as group A: all new vulcanizable rubbers until their storage capabilities have been established; all thermoplastic rubbers until their storage capabilities have been established; any rubber that cannot be classified as group B or group C. Group B: ru
42、bbers with low susceptibility to deterioration by ageing, as listed in Table 2. Group C: rubbers which are highly resistant to deterioration by ageing, as listed in Table 3. NOTEAttention is drawn to the following: resistance to deterioration can be influenced by compounding ingredients other than t
43、he type of base rubber; products can undergo changes during storage other than those caused by ageing of the rubber. Table 1 Group A rubbers AbbreviationChemical name from ISO 1629Common name BRButadiene rubberPolybutadiene NRIsoprene rubber, naturalNatural rubber IRIsoprene rubber, syntheticPolyiso
44、prene SBRStyrene-butadiene rubberSBR AUPolyester urethane rubberPolyurethane EUPolyether urethane rubberPolyurethane 2 2 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 07:42:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 2230:2002(E) ISO 2002 All rights reserved 3 4.2Blends and composites
45、 A blend of two or more rubbers of different groups should be classified as the group of the rubber(s) forming more than of the blend. If two rubbers are in equal proportions, the blend belongs to the group having the higher susceptibility to deterioration. For a composite product containing compone
46、nts made out of different rubbers, classification should be as the group of the rubber considered most susceptible to deterioration. Table 2 Group B rubbers AbbreviationChemical name from ISO 1629Common name NBRAcrylonitrile-butadiene rubberNitrile NBR/PVCBlend of acrylonitrile-butadiene rubber and
47、poly(vinyl chloride) Nitrile/PVC XNBRCarboxylic-acrylonitrile-butadiene rubberCarboxylated rubber HNBRHydrogenated NBR (with some unsaturation)Hydrogenated nitrile CO, ECOPolychloromethyloxiran and copolymerEpichlorohydrin ACMCopolymer of ethylacrylate (or other acrylates) and a small amount of a mo
48、nomer which facilitates vulcanization Acrylic CRChloroprene rubberNeoprene IIRIsobutene-isoprene rubberButyl BIIRBromo-isobutene-isoprene rubberBromobutyl CIIRChloro-isobutene-isoprene rubberChlorobutyl Table 3 Group C rubbers AbbreviationChemical name from ISO 1629Common name CMChloropolyethyleneCh
49、lorinated polyethylene CSMChlorosulfonylpolyethyleneChlorosulfonated polyethylene EPMEthylene-propylene copolymerEPM, EPR EPDMTerpolymer of ethylene, propylene and a diene with the residual unsaturated portion of the diene in the side chain EPDM FKMRubber having fluoro, perfluoroalkyl or perfluoroalkoxy substituent groups on the polymer chain Fluorocarbon Q Silicone rubberSilicone FMQSilicone rubber having both methyl and fluorine substituent groups on the polymer chain PMQSilicone rubber having both methyl and pheny
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