1、IS0 INTERNATIONAL STANDARD 1124 Third edition 1988-11-15 - INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEWYHAPOAHAR OPTAHMSAMR I-IO CTAHflAPTM3AMM Rubber compounding ingredients - Carbon black shipment sampling procedures Ingr.+dients de mt5lange du ca
2、outchouc - Proc4dures d%chantillonnage sur des livraisons de noir de carbone Reference number IS0 1124 : 1988 (E) IS0 1124:1988(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing Inter
3、national Standards is normally carried out through IS0 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, govern- mental and non-governmental, in liaison w
4、ith ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their a
5、cceptance as International Standards by the IS0 Council. They are approved in accordance with IS0 procedures requiring at least 75 % approval by the member bodies voting. International Standard IS0 1124 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products. This third edition can
6、cels and replaces the second edition (IS0 1124 : 1983), of which it constitutes a technical revision. 0 lnternetlonal Organization for Standardization, 1988 0 Printed in Switzerland INTERNATIONAL STANDARD IS0 1124 : 1988 (E) Rubber compounding ingredients - Carbon black shipment sampling procedures
7、1 Scope This International Standard specifies procedures for the sam- pling of carbon black for use in the rubber industry, delivered in bulk, semi-bulk or packages. 2 Definitions For the purposes of this International Standard, the following definitions apply. 2.1 bulk: Carbon black delivered in co
8、ntainers holding not less than 2 000 kg. 2.2 semi-bulk: Carbon black delivered in containers holding more than 50 kg and less than 2 000 kg. 2.3 packages: Carbon black delivered in containers holding IX kg or less. 3 Apparatus 3.1 Sample splitter, single-stage riffle type. 3.2 Sampling device for pa
9、ckages, comprising an open tube, of diameter not less than 25 mm, with a seal lip. The tube can be inserted into the package and the carbon black sample can be poured through it from the geometric centre of the package (see figure I). 3.3 Airtight containers, 3 dm3 minimum capacity. 3.4 Scoop, desig
10、ned to cause minimum pellet breakdown. Centre of package of package a a Figure 1 - Use of sampling device 1 IS0 1124:1988 (El 4 Sampling procedures for bulk and semi-bulk containers 4.1 General The method is for use in obtaining representative samples of the carbon black in each container, compartme
11、nt or entire ve- hicle. The samples may be used to determine the average quali- ty or to ascertain the variability in quality. 6 Treatment and storage of samples 6.1 If individual samples are taken for testing independently, pass each sample through the single-stage riffle-type sample splitter at le
12、ast twice, in order to prevent stratification. This is particularly important if pellet quality tests are to be carried out on the samples. It is highly recommended that the mean quality of the shipment be calculated from the individual samples. This will provide maximum and minimum values (e.g. for
13、 loss on heating) as well as mean values. 4.2 Bulk Normally, each compartment of the bulk container is fitted with two laterally opposite sampling ports. If individual samples are cornposited for tests to produce average quality data only, pass them together through the single-stage riffle-type samp
14、le splitter at least three times. After first withdrawing and discarding from each port at least 5 dm3 of carbon black, take at least 1 kg in mass or 3 dm3 in volume from each port and place in an airtight container (3.3). 6.2 Handle the portions taken for the determination of the pellet quality wit
15、h care to avoid breakdown of the pellets. Should a container not be fitted with sampling ports, take at least 1 kg in mass or 3 dms in volume from the loading ports approximately 30 mm below the surface to avoid the inclusion of any surface contamination. 6.3 Store the samples in airtight containers
16、 (3.3) until the tests are completed. The portions comprising the sample shall be stored individually or cornposited, depending upon requirements. 7 Sampling report 4.3 Semi-bulk The sampling report shall include the following information: The procedure described in 4.2 applies, but all samples shal
17、l be taken from the loading ports. a) a reference to this international Standard; 5 Sampling procedure for packages b) the numbers of portions taken for each sample; Place the package of carbon black to be sampled in an upright position. Adjust the seal lip of the sampling device (3.2) to a distance
18、 from the bevelled end corresponding to the depth re- quired to reach the geometric centre of the package. Make a slit at the approximate centre of the upper end of the package. In- sert the sampling tube into the cut package, with the bevelled end pointing downwards, to the required depth. Hold the
19、 seal lip against the package to act as a seal. Hold the package at an angle and allow the carbon black to flow through the sample tube. Discard approximately the first 0,5 dm3 of sample material. Remove a sufficiently large sample for testing, i.e. at least 1 kg in mass or 3 dm3 in volume. Finally,
20、 place the package in the upright position again, remove the sampling device and seal the package opening. Take care not to break up the pellets with the sampling device. Alternatively, use the scoop (3.4) to remove at least 1 kg in mass or 3 dms in volume from the geometric centre of the package af
21、ter carefully removing.at least 30 mm thickness of surface material to reach the centre of the package from the position sampled. c) the appearance of the sample or samples, with par- ticular reference to wetness or contamination, either of the sample or of the surface above the depth at which the s
22、ample was taken; d) if the sample is a composite one, the number of portions in the composite sample; e) identification of the samples; f) the location of each sample in the shipment; g) the mass or volume of the individual and composite samples; h) the number of packages, number of units, number of tiers or mass it represents; i) any deviation from the procedures specified in this Inter- national Standard. 2 IS0 1124 : 1988 (E) UDC 678.046.2:620.11 Descriptors : rubber, ingredients, carbon black, sampling. Price based on 2 pages
