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1、INTERNATIONAL STANDARD ISO 2230 Second edition 2002-04-15 Reference number ISO 2230:2002(E) ISO 2002 Rubber products Guidelines for storage Produits base dlastomres Lignes directrices pour le stockage Copyright International Organization for Standardization Provided by IHS under license with ISO Lic
2、ensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:30:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2230:2002(E) ii ISO 2002 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing
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7、 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:30:52 MDTNo reproduction or networking p
8、ermitted without license from IHS -,-,- ISO 2230:2002(E) ISO 2002 All rights reserved iii Contents Page 1Scope . 1 2Normative references . 1 3Terms and definitions 1 4Classification of rubber types according to their relative susceptibility to deterioration 2 5Packaging . 4 6Storage . 5 7Inspection,
9、 testing and recording of data during storage 7 Annex ARecommendations for inspection and testing of specific products . 10 Bibliography. 11 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale,
10、04/20/2007 04:30:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2230:2002(E) iv ISO 2002 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of pre
11、paring 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
12、 liaison 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 Interna
13、tional 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
14、Standard 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 editio
15、n cancels and replaces the first edition (ISO 2230:1973), which has been technically revised. Annex A of this International Standard is for information only. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001
16、 Not for Resale, 04/20/2007 04:30:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2230:2002(E) ISO 2002 All rights reserved v Introduction Many rubber products and components are stored for long periods before being put into service, and thus it is important they are
17、 stored in conditions that minimize unwanted changes in properties. Such changes may result from degradation, in which case they may include excessive hardening, softening, cracking, crazing and other surface effects. Other changes may be caused by deformation, contamination or mechanical damage. In
18、 preparing this revision, the requirements of different users and the multiplicity of rubber types and products have been factors of major consideration. It is recognized that some rubbers are more susceptible than others to deterioration by such factors as heat, light, ozone, oxygen and humidity. E
19、xposure to these factors should therefore be minimized in order to extend storage life, and to do so a system of storage control, proper packaging and periodic inspection becomes necessary. A system of recording, for the proper maintenance of storage and inspection data, is included to assist in ver
20、ifying that the provisions of this standard are maintained in association with common elements associated with product specifications and their verification through conducting of statistically significant methods of test. Further guidance can be found, to supplement the information contained in this
21、 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 are mentioned as being prohibited. Methods for measuring concentrations or intensities of these are not within the scope of this standard. Recommendati
22、ons are included in annex A for the inspection and testing of specific products. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:30:52 MDTNo reproduction or networking permitt
23、ed without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:30:52 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL
24、 STANDARDISO 2230:2002(E) ISO 2002 All rights reserved 1 Rubber products Guidelines for storage WARNING Persons using this International Standard 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.
25、 It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. 1Scope This International Standard gives guidelines for the inspection, recording procedures, packaging and storage of products, assemblies and
26、 components made from vulcanized or thermoplastic rubber prior to being put into circulation. It is applicable to both solid and cellular rubber 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 particu
27、late form, storage guidance for which is given in ISO 7664. The recommendations for packaging form an integral part of the controlled storage procedure, as well as providing means of identifying the material and product. 2Normative references The following normative documents contain provisions whic
28、h, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the poss
29、ibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 1629:1995, Rubber and latices N
30、omenclature ISO 4591:1992, Plastics Film and sheeting Determination of average thickness of a sample, and average thickness and yield of a roll, by gravimetric techniques (gravimetric thickness) 3Terms and definitions For the purposes of this International Standard, the following terms and definitio
31、ns apply. 3.1 initial storage period the maximum period, starting from the time of manufacture, for which a rubber product, appropriately packaged, 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 p
32、roduct, appropriately packaged, may be stored after the initial storage period, before further inspection and re-testing is necessary Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2
33、007 04:30:52 MDTNo reproduction or networking permitted without license from IHS -,-,- 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 unserviceable for the pu
34、rposes 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 containing more th
35、an 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 otherwise specified i
36、n 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. The following a
37、dditional 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: rubbers with low su
38、sceptibility 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 the type of base r
39、ubber; 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, syntheticPolyisoprene SBRStyrene-
40、butadiene rubberSBR AUPolyester urethane rubberPolyurethane EUPolyether urethane rubberPolyurethane Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:30:52 MDTNo reproduction or
41、 networking permitted without license from IHS -,-,- ISO 2230:2002(E) ISO 2002 All rights reserved 3 4.2Blends and composites 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,
42、 the blend belongs to the group having the higher susceptibility to deterioration. For a composite product containing components made out of different rubbers, classification should be as the group of the rubber considered most susceptible to deterioration. Table 2 Group B rubbers AbbreviationChemic
43、al name from ISO 1629Common name NBRAcrylonitrile-butadiene rubberNitrile NBR/PVCBlend of acrylonitrile-butadiene rubber and poly(vinyl chloride) Nitrile/PVC XNBRCarboxylic-acrylonitrile-butadiene rubberCarboxylated rubber HNBRHydrogenated NBR (with some unsaturation)Hydrogenated nitrile CO, ECOPoly
44、chloromethyloxiran and copolymerEpichlorohydrin ACMCopolymer of ethylacrylate (or other acrylates) and a small amount of a monomer which facilitates vulcanization Acrylic CRChloroprene rubberNeoprene IIRIsobutene-isoprene rubberButyl BIIRBromo-isobutene-isoprene rubberBromobutyl CIIRChloro-isobutene
45、-isoprene rubberChlorobutyl Table 3 Group C rubbers AbbreviationChemical name from ISO 1629Common name CMChloropolyethyleneChlorinated polyethylene CSMChlorosulfonylpolyethyleneChlorosulfonated polyethylene EPMEthylene-propylene copolymerEPM, EPR EPDMTerpolymer of ethylene, propylene and a diene wit
46、h 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
47、PMQSilicone rubber having both methyl and phenyl substituent groups on the polymer chain PVMQSilicone rubber having methyl, phenyl and vinyl substituent groups on the polymer chain MQSilicone rubber having only methyl substituent groups on the polymer chain, such as dimethyl polysiloxane VMQSilicone
48、 rubber having both methyl and vinyl substituent groups on the polymer chain 50 % Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:30:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2230:2002(E) 4 ISO 2002 All rights reserved 5Packaging 5.1General Unless otherwise specifie