1、Designation: D 5377 93 (Reapproved 2002)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:C 1070 Test Method for Determining Particle Size Distri-bution of Aluminia or Quartz b
4、y Laser Light Scattering2D 1208 Test Methods for Common Properties of CertainPigments3D 3174 Test Method for Ash in the Analysis Sample of Coaland Coke from Coal4D 3175 Test Method for Volatile Matter in the AnalysisSample of Coal and Coke4D 4371 Test Method for Determining the Washability Char-acte
5、ristics of Coal43. 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. Bas
6、is of Classification4.1 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
7、of 0.5 % 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 u
8、nder the jurisdiction of ASTM Committee D11 onRubber and is the direct responsibility of Subcommittee D11.20 on CompoundingMaterials and Procedures.Current edition approved Dec. 10, 2002. Published February 2003. Originallyapproved in 1993. Last previous edition approved in 1998 as D 537793 (1998).2
9、Annual Book of ASTM Standards, Vol 15.02.3Annual Book of ASTM Standards, Vol 06.03.4Annual Book of ASTM Standards, Vol 05.06.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ASTM International takes no position respecting the validity
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14、tm.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 567C1070Top particle size (m) 20 24 28 C 1070Retained on 325 mesh (g) 0.0100 0.0450 0.0950ARetained on 10
15、0 mesh (g) 0.0003 0.0005 0.0010AAsh,% 567D3174Alpha 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 (2002)2
