BS 5293-20-1992 Sampling and testing carbon black for use in the rubber industry - Method for evaluation in styrene-butadiene rubbers《橡胶工业用炭黑取样和试验方法 第20部分 丁苯橡胶评定方法》.pdf
《BS 5293-20-1992 Sampling and testing carbon black for use in the rubber industry - Method for evaluation in styrene-butadiene rubbers《橡胶工业用炭黑取样和试验方法 第20部分 丁苯橡胶评定方法》.pdf》由会员分享,可在线阅读,更多相关《BS 5293-20-1992 Sampling and testing carbon black for use in the rubber industry - Method for evaluation in styrene-butadiene rubbers《橡胶工业用炭黑取样和试验方法 第20部分 丁苯橡胶评定方法》.pdf(8页珍藏版)》请在麦多课文档分享上搜索。
1、BRITISH STANDARD BS 5293-20: 1992 ISO 3257:1992 Sampling and testing carbon black for use in the rubber industry Part 20: Method for evaluation in styrene-butadiene rubbers UDC 667.621.6:543.813BS5293-20:1992 This British Standard, having been prepared under the directionof the Plastics and Rubber S
2、tandards Policy Committee, was published underthe authority of the Standards Board and comes intoeffect on 15December1992 BSI08-1999 The following BSI references relate to the work on this standard: Committee reference PRM/53 Draft for comment92/41627 DC ISBN 0 580 21453 2 Committees responsible for
3、 this British Standard The preparation of this British Standard was entrusted by the Plastics and Rubber Standards Policy Committee (PRM/-) to Technical Committee PRM/53, upon which the following body was represented: British Rubber Manufacturers Association Amendments issued since publication Amd.
4、No. Date CommentsBS5293-20:1992 BSI 08-1999 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope 1 2 Normative references 1 3 Preparation of test mixes for evaluation of carbon black instyrene-butadiene rubbers 1 4 Evaluation of vulcanization characteristics by the
5、oscillating disccuremeter test 2 5 Evaluation of tensile stress-strain properties of vulcanized test mixes 2 6 Test report 2 Table 1 Standard test formula for evaluation of carbon black in butadiene-styrene rubbers 2 List of references Inside back coverBS5293-20:1992 ii BSI 08-1999 National foreword
6、 This Part of BS5293has been prepared under the direction of the Plastics and Rubber Standards Policy Committee and is identical with ISO3257:1992 Rubber compounding ingredients Carbon black Method of evaluation in styrene-butadiene rubbers, published by the International Organization for Standardiz
7、ation (ISO). This Part of BS5293is a part of a revision of BS5293:1976as a multipart standard, parts of which are identical with ISO standards. The first edition of BS5293published in1976did not include a method to evaluate carbon black in styrene-butadiene rubbers. The Technical Committee has revie
8、wed the provisions of ISO37:1977, ISO289:1985and ISO2393:1973, to which normative 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 ISO289is BS903-A58:1990 Methods using the Mooney viscometer. A British St
9、andard 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 immunity from legal obligations. Cross-references International Standard Corresponding
10、 British Standard BS 903 Physical testing of rubber ISO 471:1983 Part A35:1985 Temperatures, humidities and times for conditioning and testing of test pieces (Identical) ISO 3417:1991 Part A60 Curemetering Section 60.2:1992 Method for the determination of vulcanization characteristics using an oscil
11、lating disc curemeter. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages1and 2, 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 amendm
12、ent table on the inside front cover.BS5293-20:1992 BSI 08-1999 1 1 Scope This International Standard specifies standard materials, equipment and processing methods for evaluating carbon black in styrene-butadiene rubbers (SBR). NOTE 1Variations in equipment and testing procedure permitted in this In
13、ternational Standard can lead to discrepant results. Therefore, carbon black is preferably compared to a reference carbon black tested under the same conditions. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this Int
14、ernational Standard. At the time of publication, the 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 belo
15、w. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 37:1977, Rubber, vulcanized Determination of tensile stress-strain properties. ISO 289:1985, Rubber, unvulcanized Determination of Mooney viscosity. ISO 471:1983, Rubber Standard temperatures, humidities and
16、 times for the conditioning and testing of test pieces. ISO 2393:1973, Rubber test mixes Preparation, mixing and vulcanization Equipment and procedures. ISO 3417:1991, Rubber Measurement of vulcanization characteristics with the oscillating disc curemeter. 3 Preparation of test mixes for evaluation
17、of carbon black in styrene-butadiene rubbers 3.1 Standard test formula The standard test formula is given in Table 1. The materials shall be NIST 1)standard reference materials as indicated in Table 1, or shall be in accordance with equivalent national or International Standards. 3.2 Procedure 3.2.1
18、 Equipment and procedure Equipment and procedure for preparation, mixing and vulcanization shall be in accordance with ISO2393. 3.2.2 Mill mixing procedure The standard laboratory mill batch mass, in grams, shall be based on four times the formula mass (seeTable 1). The surface temperature of the ro
19、lls shall be maintained at50 C 5 C throughout the mixing. All mill openings shall be adjusted to maintain a good rolling bank at the nip of the rolls during mixing. 1) National Institute of Standards and Technology (formerly the National Bureau of Standards) of the USA. Duration Cumulative time (min
20、) (min) a) Band the rubber with the mill opening set at1,1 mm, and make3/4cuts every30s from alternate sides 2 2 b) Add the sulfur slowly and evenly across the rubber . 2 4 c) Add the stearic acid. Make one3/4cut from each side 2 6 d) Add carbon black evenly across the mill at a uniform rate. When a
21、bout half the black has been incorporated, open the mill to1,4mm and make one3/4cut from each side. Then add the remainder of the carbon black. When all the black has been incorporated, open the mill to1,8mm and make one3/4cut from each side. Be certain to add the black that has dropped into the mil
22、l pan 10 16 e) Add the zinc oxide and the TBBS with the mill opening at1,8mm 3 19 f) Make three3/4cuts from each side 3 22BS5293-20:1992 2 BSI 08-1999 Table 1 Standard test formula for evaluation of carbon black in butadiene-styrene rubbers 4 Evaluation of vulcanization characteristics by the oscill
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