BS-5293-4-1996 ISO-8511-1995.pdf
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1、BRITISH STANDARD BS 5293-4: 1996 ISO 8511:1995 Sampling and testing carbon black for use in the rubber industry Part 4: Method for determination of pellet size distribution ICS 83.040.20 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:05:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 529
2、3-4:1996 This British Standard, having been prepared under the direction of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 May 1996 BSI 10-1999 The following BSI references relate to the work on this standard: Commit
3、tee reference PRI/53 Draft for comment 94/305231 DC ISBN 0 580 25579 4 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PRI/53, Carbon black, upon which the following body was represented: British Rubber Manufacturers Asso
4、ciation Ltd. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:05:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5293-4:1996 BSI 10-1999i Contents Page Committees responsibleInside front cover National forewordii 1Scope1 2Normative r
5、eferences1 3Principle1 4Apparatus1 5Sampling1 6Procedure1 7Expression of results2 8Precision and bias2 9Test report3 Table 12 Table 22 Table 32 Table 43 Table 53 List of referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:05:05 GMT+00:00 2006, Uncontrolled Copy, (c)
6、 BSI BS 5293-4:1996 ii BSI 10-1999 National foreword This Part of BS 5293 has been prepared by PRI/53 and is identical to ISO 8511:1995 Rubber compounding ingredients Carbon black Determination of pellet size distribution, published by the International Organization for Standardization (ISO). It sup
7、ersedes BS 5293-4:1990 which is withdrawn. The Technical Committee has reviewed the provisions of ISO 565:1990 to which normative reference is made in the text, and has decided that it is acceptable for use in conjunction with this standard. ISO 565:1990 is related to BS 410:1986 Specification for t
8、est sieves. A British Standard 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-reference Publication r
9、eferred toCorresponding British Standard ISO 1124:1988BS 5293 Sampling and testing carbon black for use in the rubber industry Part 1:1990 Methods of sampling (Identical) Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 4, an inside back cover
10、 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. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:05:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5293
11、-4:1996 BSI 10-19991 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. It is the responsibility of the user to establish appropriate safety and h
12、ealth practices and to ensure compliance with any national regulatory conditions. 1 Scope Carbon black for the rubber industry is generally pelletized to reduce dust and to improve handling and incorporation into polymers. Variations in pellet size distribution can affect dispersion in polymers, bul
13、k handling, and conveying properties. This International Standard specifies a method for the determination of the pellet size distribution of carbon black. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this Internati
14、onal 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 below. Mem
15、bers of IEC and ISO maintain registers of currently valid International Standards. ISO 565:1990, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes of openings. ISO 1124:1988, Rubber compounding ingredients Carbon black shipment sampling procedures. 3 Principl
16、e Pelletized carbon black is passed through a succession of sieves with different-sized apertures and the amount retained by each is determined. 4 Apparatus 4.1 Mechanical sieve shaker1), which imparts a uniform rotary and tapping motion to a stack of nominally 200 mm diameter sieves. The mechanism
17、shall produce 280 to 320 rotary motions per minute (4,6 to 5,3 per second) and 140 to 160 taps per minute (2,3 to 2,7 per second) to a cork fitted into the centre of the top-sieve cover (4.4) and extending 3 mm to 9 mm above it. Only cork shall be used, rubber being unsuitable. 4.2 Sieves, nominally
18、 200 mm diameter, 25 mm high, of woven metal wire cloth, conforming to ISO 565, having apertures of 2,00 mm, 1,00 mm, 0,5 mm, 0,25 mm and 0,125 mm. A 0,71 mm aperture sieve may be added if pellets produced by a dry process are tested. Other sizes may be added by agreement between the interested part
19、ies. 4.3 Bottom receiver 4.4 Top-sieve cover 4.5 Sample splitter, single stage, riffle type. 4.6 Balance, with at least 0,1 g sensitivity. 4.7 Container, suitable for use when weighing test portions and sieved fractions. 5 Sampling Samples shall be taken in accordance with ISO 1124. 6 Procedure 6.1
20、Stack the sieves (4.2) in the following order, from bottom to top: bottom receiver; 0,125 mm; 0,25 mm; 0,5 mm; 1,00 mm; 2,00 mm. If a 0,71 mm sieve is used, or sieves of sizes not specified in 4.2, place them in the appropriate position in the stack. 6.2 Pass the sample through the sample splitter (
21、4.5) and take two test portions, each of 100 g 10 g. 6.3 Weigh each test portion to the nearest 0,1 g. 6.4 Transfer a test portion to the top sieve, fit the sieve cover (4.4) and place the assembly in the mechanical shaker (4.1). 1) A Ro-Tap sieve shaker is satisfactory for this purpose. It is avail
22、able from Tyler Power Systems, 8648 Tyler Boulevard, Mentor, OH 44060, USA, or Stein Industrie, 19 Avenue Morane-Saulnier, F-78140 Vlizy-Villacoublay, France. This information is given for the convenience of users of this International Standard and does not constitute an endorsement by ISO of the ap
23、paratus named. Other types of apparatus may be used if they can be shown to lead to the same results. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:05:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5293-4:1996 2 BSI 10-1999 6.5 Allow the assembly to shake for 6.6 Remove the sieve assem
24、bly from the shaker, transferring each fraction in turn to the container (4.7) and weighing the carbon black retained on each sieve and in the bottom receiver (4.3) individually to the nearest 0,1 g. 6.7 Repeat the operations in 6.4 to 6.6 for the second test portion. 7 Expression of results 7.1 Cal
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