1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ICS 83.060 ISBN 0-626-14456-6 SANS 2230:2003Edition 1ISO 2230:2002Edition 2SOUTH AFRICAN NATIONAL STANDARD Rubber products Guidelines for storage Publish
4、ed by Standards South Africa 1 dr lategan road groenkloof ! private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa 2003 This national standard is the identical implementation of ISO 2230:2002 and is adopted with the permi
5、ssion of the International Organization for Standardization SANS 2230:2003 Edition 1 ISO 2230:2002 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee STANSA TC 5140.17, Rubber and rubber products, in accordance with proce
6、dures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. INTERNATIONALSTANDARDISO2230Second edition2002-04-15Reference numberISO 2230:2002(E) ISO 2002Rubber products Guidelines for storageProduits base dlastomres Lignes directrices pour le stockageISO 2230:2002(E)ii ISO
7、2002 All rights reservedPDF disclaimerThis PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not beedited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In d
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10、ven below. ISO 2002All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOsmember b
11、ody in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.chWeb www.iso.chPrinted in SwitzerlandISO 2230:2002(E) ISO 2002 All rights reserved iiiContents Page1 Scope . 12 Normative references . 13 Terms and
12、 definitions 14 Classification of rubber types according to their relative susceptibility to deterioration 25 Packaging . 46 Storage . 57 Inspection, testing and recording of data during storage 7AnnexA Recommendations for inspection and testing of specific products . 10Bibliography. 11ISO 2230:2002
13、(E)iv ISO 2002 All rights reservedForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISOmember bodies). The work of preparing International Standards is normally carried out through ISO technicalcommittees. Each member body intere
14、sted in a subject for which a technical committee has been established hasthe right to be represented on that committee. International organizations, governmental and non-governmental, inliaison with ISO, also take part in the work. ISO collaborates closely with the International ElectrotechnicalCom
15、mission (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 International Standards adopted by the technical committees are circulated to the member bodies for voting.Publication as an
16、 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 Standard may be the subject ofpatent rights. ISO shall not be held responsible for identifying any or all such patent r
17、ights.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 cancels and replaces the first edition (ISO 2230:1973), which has been technically revised.Annex A of this International
18、Standard is for information only.ISO 2230:2002(E) ISO 2002 All rights reserved vIntroductionMany rubber products and components are stored for long periods before being put into service, and thus it isimportant they are stored in conditions that minimize unwanted changes in properties. Such changes
19、may result fromdegradation, in which case they may include excessive hardening, softening, cracking, crazing and other surfaceeffects. Other changes may be caused by deformation, contamination or mechanical damage.In preparing this revision, the requirements of different users and the multiplicity o
20、f rubber types and products havebeen factors of major consideration. It is recognized that some rubbers are more susceptible than others todeterioration by such factors as heat, light, ozone, oxygen and humidity. Exposure to these factors should thereforebe minimized in order to extend storage life,
21、 and to do so a system of storage control, proper packaging and periodicinspection becomes necessary.A system of recording, for the proper maintenance of storage and inspection data, is included to assist in verifyingthat the provisions of this standard are maintained in association with common elem
22、ents associated with productspecifications and their verification through conducting of statistically significant methods of test. Further guidancecan 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 generatio
23、n of deleterious influences such as ozone and radiation are mentionedas being prohibited. Methods for measuring concentrations or intensities of these are not within the scope of thisstandard.Recommendations are included in annex A for the inspection and testing of specific products.This page is int
24、entionally left blankINTERNATIONAL STANDARD ISO 2230:2002(E) ISO 2002 All rights reserved 1Rubber products Guidelines for storageWARNING Persons using this International Standard should be familiar with normal laboratory practice.This standard does not purport to address all of the safety problems,
25、if any, associated with its use. It is theresponsibility of the user to establish appropriate safety and health practices and to ensure compliance withany national regulatory conditions.1 ScopeThis International Standard gives guidelines for the inspection, recording procedures, packaging and storag
26、e ofproducts, assemblies and components made from vulcanized or thermoplastic rubber prior to being put intocirculation.It is applicable to both solid and cellular rubber products prepared from dry raw rubber, latex or other sources. It is notintended for use with raw rubber in bale, liquid (solutio
27、n or emulsion) or particulate form, storage guidance for whichis given in ISO 7664.The recommendations for packaging form an integral part of the controlled storage procedure, as well as providingmeans of identifying the material and product.2 Normative referencesThe following normative documents co
28、ntain provisions which, through reference in this text, constitute provisions ofthis International Standard. For dated references, subsequent amendments to, or revisions of, any of thesepublications do not apply. However, parties to agreements based on this International Standard are encouraged toin
29、vestigate the possibility of applying the most recent editions of the normative documents indicated below. Forundated references, the latest edition of the normative document referred to applies. Members of ISO and IECmaintain registers of currently valid International Standards.ISO 1629:1995, Rubbe
30、r and latices NomenclatureISO 4591:1992, Plastics Film and sheeting Determination of average thickness of a sample, and averagethickness and yield of a roll, by gravimetric techniques (gravimetric thickness)3 Terms and definitionsFor the purposes of this International Standard, the following terms a
31、nd definitions apply.3.1 initial storage periodthe maximum period, starting from the time of manufacture, for which a rubber product, appropriately packaged, maybe stored under specified conditions before a sample needs to be inspected or re-tested3.2 extension storage periodthe period for which a r
32、ubber product, appropriately packaged, may be stored after the initial storage period, beforefurther inspection and re-testing is necessaryISO 2230:2002(E)2 ISO 2002 All rights reserved3.3 storage lifethe maximum period of time that a rubber product, appropriately packaged, may be stored, after whic
33、h time it isregarded as unserviceable for the purposes for which it was originally manufacturedNOTE The storage life of a rubber product is influenced by its shape and size as well as its composition, with thick productsusually undergoing slower change due to degradation than thinner ones.3.4 assemb
34、lyany product or component containing more than one element, one or more of which is made of rubber3.5 ageingthe irreversible change of material properties during exposure to an environment, for a period of time4 Classification of rubber types according to their relative susceptibility to deteriorat
35、ion4.1 GeneralUnless otherwise specified in the product specification, rubber products should be classified (for the purpose ofstorage) in terms of the relative susceptibility to deterioration of the rubber type used, as follows:Group A: rubbers with moderate susceptibility to deterioration by agein
36、g, as listed in Table 1.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 o
37、r group C.Group B: rubbers 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.NOTE Attention is drawn to the following: resistance to deterioration can be influenced by compounding ingr
38、edients other than the type of base rubber; products can undergo changes during storage other than those caused by ageing of the rubber.Table 1 Group A rubbersAbbreviation Chemical name from ISO 1629 Common nameBR Butadiene rubber PolybutadieneNR Isoprene rubber, natural Natural rubberIR Isoprene ru
39、bber, synthetic PolyisopreneSBR Styrene-butadiene rubber SBRAU Polyester urethane rubber PolyurethaneEU Polyether urethane rubber PolyurethaneISO 2230:2002(E) ISO 2002 All rights reserved 34.2 Blends and compositesA blend of two or more rubbers of different groups should be classified as the group o
40、f the rubber(s) forming morethan of the blend. If two rubbers are in equal proportions, the blend belongs to the group having the highersusceptibility to deterioration. For a composite product containing components made out of different rubbers,classification should be as the group of the rubber con
41、sidered most susceptible to deterioration.Table 2 Group B rubbersAbbreviation Chemical name from ISO 1629 Common nameNBR Acrylonitrile-butadiene rubber NitrileNBR/PVC Blend of acrylonitrile-butadiene rubber and poly(vinyl chloride)Nitrile/PVCXNBR Carboxylic-acrylonitrile-butadiene rubber Carboxylate
42、d rubberHNBR Hydrogenated NBR (with some unsaturation) Hydrogenated nitrileCO, ECO Polychloromethyloxiran and copolymer EpichlorohydrinACM Copolymer of ethylacrylate (or other acrylates) and a small amount of a monomer which facilitates vulcanizationAcrylicCR Chloroprene rubber NeopreneIIR Isobutene
43、-isoprene rubber ButylBIIR Bromo-isobutene-isoprene rubber BromobutylCIIR Chloro-isobutene-isoprene rubber ChlorobutylTable 3 Group C rubbersAbbreviation Chemical name from ISO 1629 Common nameCM Chloropolyethylene Chlorinated polyethyleneCSM Chlorosulfonylpolyethylene Chlorosulfonated polyethyleneE
44、PM Ethylene-propylene copolymer EPM, EPREPDM Terpolymer of ethylene, propylene and a diene with the residual unsaturated portion of the diene in the side chainEPDMFKM Rubber having fluoro, perfluoroalkyl or perfluoroalkoxy substituent groups on the polymer chainFluorocarbonQ Silicone rubber Silicone
45、FMQ Silicone rubber having both methyl and fluorine substituent groups on the polymer chainPMQ Silicone rubber having both methyl and phenyl substituent groups on the polymer chainPVMQ Silicone rubber having methyl, phenyl and vinyl substituent groups on the polymer chainMQ Silicone rubber having on
46、ly methyl substituent groups on the polymer chain, such as dimethyl polysiloxaneVMQ Silicone rubber having both methyl and vinyl substituent groups on the polymer chain50 %ISO 2230:2002(E)4 ISO 2002 All rights reserved5 Packaging5.1 GeneralUnless otherwise specified in the appropriate product specif
47、ication, rubber products should be: enclosed in individual sealed envelopes;or enclosed in individual sealed pockets in a multiple envelope provided that they can be removed without affectingthe sealing of the remainder of the items in the package;or if it is not possible to package the items in eit
48、her of these ways, suitably enclosed or wrapped so as to preventfree access of air.NOTE 1 Under certain conditions silicone rubber (Q) deteriorates if totally enclosed and in these cases free access of air isadvisable provided other deteriorating agencies (see 6.2) are avoided.NOTE 2 It is advisable
49、 that packaging be completed as soon as is reasonably practicable after curing in the case of a vulcanizedrubber product, or as soon as reasonably practicable after manufacture in the case of a thermoplastic rubber product.The packaging should be carried out in an atmosphere in which the relative humidity is not greater than (see6.2.2) and under conditions that will ensure freedom from contamination by dust, oil, grease, etc.If it is necessary for rubber components to be packed in assembly sets, the components should be
