1、Designation: D1513 052Standard Test Method forCarbon Black, PelletedPour Density1This standard is issued under the fixed designation D1513; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in pare
2、ntheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1NOTETable 1 revised editorially in April 2010.2NOTEAdded research report inform
3、ation to Section 10 editorially in November 2010.1. Scope1.1 This test method covers the determination of the pourdensity of pelleted carbon blacks.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 This standard does not
4、purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:
5、2D1799 Practice for Carbon BlackSampling PackagedShipmentsD1900 Practice for Carbon BlackSampling Bulk Ship-mentsD4483 Practice for Evaluating Precision for Test MethodStandards in the Rubber and Carbon Black ManufacturingIndustries3. Summary of Test Method3.1 Pour density is determined by measuring
6、 the mass ofcarbon black in a known volume.4. Significance and Use4.1 Pour density is a function of the degree of compactionduring pelletization. It is strongly influenced by and inverselyproportional to structure (OAN). Pour density of carbon blackis useful for estimating the weight-to-volume relat
7、ionship forcertain applications, such as automatic batch loading systems,and for estimating weights of bulk shipments.5. Apparatus5.1 Cylindrical Container, 1000 or 624-cm3capacity, hav-ing a uniform height and no pouring lip or deformation of thewall. A stainless steel beaker 100 6 5mm(46 0.2 in.)
8、indiameter is acceptable.NOTE 1A satisfactory container can be made by pouring 1000 or 624cm3of water at 20C into a 1000 or 1200-cm3stainless steel beaker 1006 5mm(46 0.2 in.) in diameter, marking the water level and then cuttingat the mark after chucking firmly in a lathe.5.2 Straightedge or Spatul
9、a, at least 150 mm (6 in.) inlength.5.3 Balance, torsion or trip, with a sensitivity of 0.1 g.6. Sampling6.1 Samples shall be taken in accordance with PracticeD1799 or Practice D1900.7. Procedure7.1 Pour the carbon black into the center of the taredcontainer from a height not more than 50 mm (2 in.)
10、 above therim. A large enough excess should be used to form a coneabove the rim of the cylindrical container. Level the surfacewith a single sweep of the straightedge or spatula heldperpendicular to and in firm contact with the lip of thecontainer. Record the mass of the carbon black to the nearestg
11、ram.8. Calculation8.1 Calculate the pour density to the nearest kg/m3asfollows:8.1.1 Using a 1000-cm3container:D 5 W1000(1)8.1.2 Using a 624-cm3container:1This test method is under the jurisdiction of ASTM Committee D24 on CarbonBlack and is the direct responsibility of Subcommittee D24.51 on Carbon
12、 BlackPellet Properties.Current edition approved May 1, 2005. Published May 2005. Originallyapproved in 1957. Last previous edition approved in 2004 as D1513 04. DOI:10.1520/D1513-05E02.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceas
13、tm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.D 5 W6243 16!/10 (2)where:D = pour density, kg/m3,W1000= mas
14、s of carbon black, g in 1000-cm3container,andW624= mass of carbon black, g in 624-cm3container.8.2 Density to the nearest lb/ft3can be calculated as follows:8.2.1 Using a 1000-cm3container:d 5 D/16 5 W1000/16 (3)8.2.2 Using a 624-cm3container:d 5 D/16 5 W624/10 (4)where:d = pour density, lb/ft3,D =
15、pour density, kg/m3,W624= mass of carbon black, g in 624-cm3container,andW1000= mass of carbon black, g in 1000-cm3container.9. Report9.1 Report the following information:9.1.1 Proper identification of the sample, and9.1.2 Result obtained, reported to the nearest kg/m3(0.1lb/ft3).10. Precision and B
16、ias310.1 This precision and bias section has been prepared inaccordance with Practice D4483. Refer to Practice D4483 forterminology and other statistical details.10.2 PrecisionThe precision results in this section give anestimate of the precision as described in 10.3-10.5.2. Theprecision parameters
17、should not be used for acceptance/rejection testing of any group of materials without documen-tation that they are applicable to those particular materials andthe specific testing protocols that include this test method.10.3 A Type 1 interlaboratory precision program was con-ducted in 1994. Both rep
18、eatability and reproducibility repre-sent short-term testing conditions. Nine laboratories testedthree carbon blacks (Materials A, B, and C) twice on twodifferent days. A test result is the value obtained from a singledetermination. Acceptable difference values were not mea-sured.10.4 The results of
19、 the precision calculations are given inTable 1, with the materials arranged in ascending “mean level”order.10.5 The precision for the pooled values for pour densitymay be expressed as follows:10.5.1 RepeatabilityThe repeatability, (r), of the pourdensity has been established as 1.7 % (pooled). Two
20、single testresults (or determinations) that differ by more than 1.7 % mustbe considered suspect and dictate that some appropriate inves-tigative action be taken.10.5.2 ReproducibilityThe reproducibility, (R),ofthepour density has been established as 3.7 % (pooled). Twosingle test results (or determi
21、nations) produced in separatelaboratories that differ by more than 3.7 % must be consideredsuspect and dictate that some appropriate investigative ortechnical/commercial action be taken.10.6 BiasIn test method terminology, bias is the differ-ence between an average test value and the reference (true
22、) testproperty value. Reference values do not exist for this testmethod since the value or level of the test property isexclusively defined by the test method. Bias, therefore, cannotbe determined.11. Keywords11.1 carbon black; estimating mass of bulk shipments; massto volume relationships; pelleted
23、 carbon black; pour density3Supporting data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR:D24-1028.TABLE 1 Test Method PrecisionType 1: Pour DensityMaterialMean Levelkg/m3(lb/ft3)Within LaboratoryABetween LaboratoryASrr (r) SRR (R)C 380 (23.8)
24、 2.8 (0.18) 7.9 (0.50) 2.1 4.5 (0.28) 12.9 (0.80) 3.4B 434 (27.1) 2.2 (0.14) 6.2 (0.39) 1.4 6.3 (0.39) 17.7 (1.11) 4.1A 540 (33.7) 3.3 (0.20) 9.2 (0.57) 1.7 6.5 (0.41) 18.5 (1.16) 3.4Pooled orAverage values452 (28.2) 2.8 (0.17) 7.9 (0.50) 1.7 5.9 (0.39) 16.6 (1.03) 3.7ASymbols are defined as follows
25、:Sr= within laboratory standard deviationr = repeatability in measurement units, kg/m3(lb/ft3)(r) = repeatability in percentSR= between laboratory standard deviationR = reproducibility in measurement units, kg/m3(lb/ft3)(R) = reproducibility in percentD1513 0522ASTM International takes no position r
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28、rnational Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown
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