BS-5474-1991 ISO-2303-1990.pdf
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1、BRITISH STANDARD BS 5474:1991 ISO 2303:1990 Incorporating Amendment No. 1 Method for Evaluation of non-oil-extended solution-polymerized isoprene rubber (IR) Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:03:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5474:1991 This British Standard,
2、 having been prepared under the direction of the Plastics and Rubber Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 28 June 1991 BSI 10-1999 First published May 1977 Second edition April 1984 Third edition June 1991 The following BSI ref
3、erences relate to the work on this standard: Committee reference PRM/50 Draft for approval 90/43163 ISBN 0 580 19805 7 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Plastics and Rubber Standards Policy Committee (PRM/-) to Technical Co
4、mmittee PRM/50, upon which the following bodies were represented: British Rubber Manufacturers Association Chemical Industries Association Malaysian Rubber Producers Research Association Ministry of Defence Amendments issued since publication Amd. No.DateComments 8219June 1994Indicated by a sideline
5、 in the margin Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:03:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5474:1991 BSI 10-1999i Contents Page Committees responsibleInside front cover National forewordii 1Scope1 2Normative references1 3Sampling and sample preparation1 4Physical an
6、d chemical tests on raw rubber1 5Preparation of the test mix for evaluation of isoprene rubbers1 6Evaluation of vulcanization characteristics with the oscillating disc curemeter4 7Evaluation of tensile stress-strain properties of vulcanized test mixes4 8Test report4 Table 1 Standard test formula for
7、 evaluation of IR rubbers1 Publication(s) referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:03:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5474:1991 ii BSI 10-1999 National foreword This British Standard has been prepared under the direction of the Plastics
8、and Rubber Standards Policy Committee and is identical with ISO 2303:1990 “Isoprene rubber (IR) Non-oil-extended, solution-polymerized types Evaluation procedure” published by the International Organization for Standardization (ISO). It supersedes BS 5474:1984 which is withdrawn. The Technical Commi
9、ttee has reviewed the provisions of ISO 37:1977, ISO 248:1979 and ISO 289:1985 to which reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. A related British Standard to ISO 37:1977 is BS 903 “Methods of testing vulcanized rubber” Part A
10、2:1989 “Determination of tensile stress-strain properties”. A related British Standard to ISO 248:1979 is BS 5923 “Methods for chemical analysis of rubber” Part 3:1981 “Determination of volatile matter content of raw rubbers”. Additional information. The NIST standard reference materials referred to
11、 in 5.1 correspond to materials given in BS 4398:1969 “Specification for compounding ingredients for rubber test mixes”. It is customary in the UK to condition the rubber at 23 C, which is one of the preferred temperatures given in ISO 2393:1973 (see 5.2.2.10 and clause 7). A British Standard does n
12、ot 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 immunity from legal obligations. Cross-references International StandardCorresponding British Stand
13、ard ISO 247:1978aBS 5923 Methods for chemical analysis of rubber Part 1:1980 Determination of ash (Identical) ISO 471:1983BS 903 Methods of testing vulcanized rubber Part A35:1985 Temperatures, humidities and times for conditioning and testing of test pieces (Identical) ISO 1795:1974 ISO 1796:1982 B
14、S 6315:1982 Methods for sampling and sample preparation of raw rubber (Technically equivalent) ISO 2393:1973BS 1674:1976 Specification for equipment and general procedure for mixing and vulcanizing rubber test mixes (Technically equivalent) ISO 3417:197BS 1673 Methods of test for raw rubber and unvu
15、lcanized compounded rubber Part 10:1977 Measurement of prevulcanizing and curing characteristics by means of curemeters (Technically equivalent) a This has been superseded by ISO 247:1990. BS 5923-1:1980 has been superseded by BS 7164-5:1991, which is identical to ISO 247:1990. Summary of pages This
16、 document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licens
17、ed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:03:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5474:1991 BSI 10-19991 1 Scope This International Standard specifies physical and chemical tests on raw rubbers; standard materials, a standard test formula, equipment and processing methods for e
18、valuating the vulcanization characteristics of non-oil-extended, solution-polymerized isoprene rubbers (IR). 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the
19、editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of curre
20、ntly valid International Standards. ISO 37:1977, Rubber, vulcanized Determination of tensile stress-strain properties. ISO 247:1978, Rubber Determination of ash. ISO 248:1979, Rubbers, raw Determination of volatile matter content. ISO 289:1985, Rubber, unvulcanized Determination of Mooney viscosity.
21、 ISO 471:1983, Rubber Standard temperatures, humidities and times for the conditioning and testing of test pieces. ISO 1795:1974, Raw rubber in bales Sampling. ISO 1796:1982, Rubber, raw Sample preparation. ISO 2393:1973, Rubber test mixes Preparation, mixing and vulcanization Equipment and procedur
22、es. ISO 3417:1977, Rubber Measurement of vulcanization characteristics with the oscillating disc curemeter. 3 Sampling and sample preparation 3.1 A sample of mass approximately 1 500 g shall be taken by the method described in ISO 1795. 3.2 Preparation of the test portion shall be in accordance with
23、 ISO 1796. 4 Physical and chemical tests on raw rubber 4.1 Mooney viscosity Determine, without preliminary massing, the Mooney viscosity in accordance with ISO 289 on a test portion prepared as indicated in ISO 1796, avoiding areas that contain many bubbles. Record the result as ML (1 + 4) at 100 C.
24、 4.2 Volatile matter Determine the volatile matter content in accordance with ISO 248. 4.3 Ash content Determine the ash content in accordance with ISO 247. 5 Preparation of the test mix for evaluation of isoprene rubbers 5.1 Standard test formula The standard test formula is given in Table 1. The m
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