1、Designation: D 5377 93 (Reapproved 2007)Standard Classification forRubber Compounding MaterialsGround Coal1This standard is issued under the fixed designation D 5377; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last
2、 revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This classification covers the compounding materialknown as ground coal. It is generally used in rubber com-pounds as a f
3、iller.1.2 There are three grades of ground coal based on particlesize, ash, and moisture. The selected values for these propertiesare suitable for use in a rubber compound.2. Referenced Documents2.1 ASTM Standards:2C 1070 Test Method for Determining Particle Size Distri-bution of Alumina or Quartz b
4、y Laser Light ScatteringD 1208 Test Methods for Common Properties of CertainPigmentsD 3174 Test Method forAsh in theAnalysis Sample of Coaland Coke from CoalD 3175 Test Method for Volatile Matter in the AnalysisSample of Coal and CokeD 4371 Test Method for Determining the Washability Char-acteristic
5、s of Coal3. Significance and Use3.1 Ground coal is commonly used as an inexpensive fillerin rubber compounds as a direct or partial replacement forcarbon black or as a diluent in the compound.3.2 Ground coal is very compatible with most rubbers and isvery easily mixed into the compound.4. Basis of C
6、lassification4.1 Particle size will have a direct effect on the modulus,tensile strength, and tear strength of the finished rubber.4.2 Ash in the coal will effect the specific gravity and highash can influence the curing characteristics of the rubber.4.3 Moisture in the ground coal at levels of 0.5
7、% and abovecan cause blisters and scorch.4.4 Lowering the density (specific gravity) will reducecompounding cost and affect volume loading.4.5 Ground coal for use in rubber compounds shall conformto the three grades listed in Table 1.5. Keywords5.1 filler; ground coal1This classification is under th
8、e jurisdiction of ASTM Committee D11 onRubber and is the direct responsibility of Subcommittee D11.20 on CompoundingMaterials and Procedures.Current edition approved Nov. 1, 2007. Published January 2008. Originallyapproved in 1993. Last previous edition approved in 2002 as D 5377 93 (2002).2For refe
9、renced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.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, Wes
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13、ouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obt
14、ained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 1 Properties of Ground CoalProperty (Maximum Values) Grade I Grade II Grade III Test MethodAverage particle size (m) not weighted
15、5 6 7 C 1070Top particle size (m) 20 24 28 C 1070Retained on 325 mesh (g) 0.0100 0.0450 0.0950ARetained on 100 mesh (g) 0.0003 0.0005 0.0010AAsh,% 5 6 7 D 3174Alpha quartz,% 1.0 1.50 2.0 X-Ray DiffractionHeat loss, % (moisture) 0.5 0.75 1.0 D 3174Acidity 0.02 0.02 0.02 D 1208Volatile matter,% 20 20 20 D 3175Density (Mg/m3) (specific gravity) 1.35 1.45 1.55 D 4371AMethod is being letter balloted in Subcommittee D11.11. Values based on 100 g samples.D 5377 93 (2007)2
