BS-ISO-2303-2003.pdf
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1、BRITISH STANDARD BS ISO 2303:2003 Isoprene rubber (IR) Non-oil-extended, solution-polymerized types Evaluation procedure ICS 83.060 ? BS ISO 2303:2003 This British Standards was published under the authority of the Standards Policy and Strategy Committee on 24 January 2003 BSI 24 January 2003 ISBN 0
2、 580 41141 9 National foreword This British Standard reproduces verbatim ISO 2303:2003 and implements it as the UK national standard. It supersedes BS 5474:1991 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/50, Rubber-raw, natural and synthetic,
3、 including latex and carbon black, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BS
4、I Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for
5、its correct application. Compliance with a British Standard does not of itself confer immunity 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 inter
6、ests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 10, an inside back cover and a back cover. The BSI copyright date displa
7、yed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Reference number ISO 2303:2003(E) INTERNATIONAL STANDARD ISO 2303 Fourth edition 2003-01-15 Isoprene rubber (IR) Non-oil-extended, solution-polymerized types Evaluation procedu
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13、i Contents Page Foreword iv 1 Scope 1 2 Normative references 1 3 Sampling and sample preparation 2 4 Physical and chemical tests on raw rubber . 2 4.1 Mooney viscosity 2 4.2 Volatile matter 2 4.3 Ash 2 5 Preparation of the test mixes for evaluation of Isoprene rubbers. 2 5.1 Standard test formulatio
14、n. 2 5.2 Procedure. 3 6 Evaluation of vulcanization characteristics by a curemeter test. 5 6.1 Using an oscillating disc curemeter 5 6.2 Using a rotorless curemeter 5 7 Evaluation of tensile stress-strain properties of vulcanized test mixes . 6 8 Precision 6 8.1 General. 6 8.2 Precision details 6 8.
15、3 Precision results . 6 9 Test report 7 Annex A (informative) Alternative mixing method by internal mixer-mill mixing procedure . 8 BS ISO 2303:2003 iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The wo
16、rk 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 established has the right to be represented on that committee. International organizations, governmental and non-governm
17、ental, in 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. The
18、main task of technical committees is to prepare International Standards. Draft International 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.
19、Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 2303 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Sub
20、committee SC 3, Raw materials (including latex) for use in the rubber industry. This fourth edition cancels and replaces the third edition (ISO 2303:1990), which has been technically revised. Annex A of this International Standard is for information only. BS ISO 2303:2003 INTENRATIONAL TSANDADR IS:3
21、032 O3002(E) 1 Isoprene rubber (IR) Non-oil-extended, solution-polymerized types Evaluation procedure WARNING Persons using this International Standard should be familiar with normal laboratory practices. This International Standard does not purport to address all of the safety problems, if any, ass
22、ociated 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. 1 Scope This International Standard specifies, for general purpose non-oil-extended, solution-polymerized polyisoprene rub
23、bers (IR): physical and chemical tests on raw rubbers; standard materials, standard test formulation, equipment and processing methods for evaluating the vulcanization characteristics. Two mill-mixing procedures are described in this International Standard and an internal mixer-mill mixing procedure
24、 is described in annex A. 2 Normative 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 revisions of, any of these publications do not apply.
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