ASTM D1508-02(2007)e1

Standard Test Method for Carbon Black, Pelleted Fines and Attrition

SIGNIFICANCE AND USE
Method A, Fines—The fines content of carbon black is related to the bulk flowability, dustiness, and, in some instances, the level of dispersion. Due to the many other variables that influence dispersion and handling, the significance of fines content must be determined by the user.
Method B, Attrition—By comparing the percent fines and attrition, an indication can be obtained of pellet stability and the amount of fines that may be created by pellet degradation in conveying, handling or transit.
SCOPE
1.1 This test method covers the determination of the fines and attrition of pelleted carbon black.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 30-Apr-2007
• ICS: 83.040.20 - Rubber compounding ingredients
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.51 - Carbon Black Pellet Properties

Relations

• Replaces: ASTM D1508-02(2007) - Standard Test Method for Carbon Black, Pelleted Fines and Attrition
• Effective Date: 01-May-2007
• Replaced By: ASTM D1508-12 - Standard Test Method for Carbon Black, Pelleted Fines and Attrition
• Effective Date: 01-Jun-2012
• Referred By: ASTM D5817-20 - Standard Practice for Carbon Black, Pelleted—Reduction, Blending, and Drying of Gross Samples for Testing
• Effective Date: 01-May-2007
• Referred By: ASTM D4122-17(2023) - Standard Practice for Carbon Black—Evaluation of an Industry Reference Black
• Effective Date: 01-May-2007
• Referred By: ASTM D8466-22 - Standard Guide for Recovered Carbon Black—Carbon Black Test Methods for Testing rCB
• Effective Date: 01-May-2007
• Referred By: ASTM D3053-23 - Standard Terminology Relating to Carbon Black
• Effective Date: 01-May-2007
• Referred By: ASTM D1765-23a - Standard Classification System for Carbon Blacks Used in Rubber Products
• Effective Date: 01-May-2007

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
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Designation: D1508 − 02(Reapproved 2007)
Standard Test Method for
Carbon Black, Pelleted Fines and Attrition
This standard is issued under the fixed designation D1508; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
´ NOTE—Table 1 and Table 2 revised editorially in April 2010.
1. Scope 3.2 MethodB,Attrition—Thesametestsampleisshakenfor
an additional 15 min to determine the amount of pellet
1.1 This test method covers the determination of the fines
degradation or attrition created during this additional shake
and attrition of pelleted carbon black.
interval. The attrition is expressed in percent.
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Significance and Use
responsibility of the user of this standard to establish appro-
4.1 Method A, Fines—The fines content of carbon black is
priate safety and health practices and determine the applica-
related to the bulk flowability, dustiness, and, in some in-
bility of regulatory limitations prior to use.
stances, the level of dispersion. Due to the many other
variables that influence dispersion and handling, the signifi-
2. Referenced Documents
cance of fines content must be determined by the user.
2.1 ASTM Standards:
4.2 Method B, Attrition—By comparing the percent fines
D1511 Test Method for Carbon Black—Pellet Size Distri-
and attrition, an indication can be obtained of pellet stability
bution
and the amount of fines that may be created by pellet
D1799 Practice for Carbon Black—Sampling Packaged
degradation in conveying, handling or transit.
Shipments
D1900 Practice for Carbon Black—Sampling Bulk Ship-
5. Apparatus
ments
5.1 Mechanical or Vibratory Sieve Shaker.
D4483 Practice for Evaluating Precision for Test Method
5.2 Sieves, six 125-µm (U.S. Standard No. 120) having a
Standards in the Rubber and Carbon Black Manufacturing
200-mm (8-in.) diameter and 25-mm (1-in.) height, or equiva-
Industries
lent, conforming to Specification E11.
D5817 Practice for Carbon Black, Pelleted—Reduction,
Blending, and Drying of Gross Samples for Testing
5.3 Sieve Separator Receivers, five required.
E11 Specification for Woven Wire Test Sieve Cloth and Test
5.4 Sieve Cover.
Sieves
5.5 Bottom Receiver Pan.
3. Summary of Test Method
5.6 Riffle Sample Splitter.
3.1 MethodA,Fines—Asampleofcarbonblackisplacedon
5.7 Small Scoop or Large Spoon.
a 125-µm sieve and shaken in a mechanical or vibratory sieve
5.8 Balance, 0.1-g sensitivity.
shaker for 5 min. The pellets, pellet fragments, dust, and
unpelletized black that pass through the sieve are defined as
6. Sampling
carbon black fines. The fines are expressed in percent.
6.1 Samples shall be taken in accordance with Practice
D1799 or Practice D1900.
1 6.2 Practice D5817 shall be used for reduction and blending
This test method is under the jurisdiction ofASTM Committee D24 on Carbon
Black and is the direct responsibility of Subcommittee D24.51 on Carbon Black of samples.
Pellet Properties.
Current edition approved April 6, 2010. Published July 2007. Originally
7. Procedure
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approved in 1957. Last previous edition approved in 2002 as D1508 – 02 . DOI:
7.1 Method A, Fines and Method B, Attrition:
10.1520/D1508-02R07E01.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on A Ro–Tap or vibratory sieve shaker is satisfactory for this purpose. For a
the ASTM website. description of these refer to Test Method D1511.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D1508 − 02 (2007)
TABLE 1 Test Method Precision-Type 1: Five Minute Fines (%)
7.1.1 Stack up to six sets of sieves and receivers with a
receiver beneath each sieve. Materials Mean Within Laboratories Between Laboratories
Level %
7.1.2 Weigh 25.0 g portions, being careful to dip approxi-
Sr r (r) SR R (R)
mately 25 g of black from the riffle splitter.
Material C 1.5 0.31 0.9 60.2 0.51 1.5 98.9
Material A 2.2 0.53 1.5 69.2 0.68 1.9 88.4
NOTE 1—It is not good practice to weigh the sample by pouring it
Material D 4.5 0.89 2.5 55.7 1.03 2.9 64.4
directly out of the black container since the fines and smaller pellets will
Material B 9.8 0.87 2.5 25.2 0.91 2.6 26.4
tend to remain in the container while the larger pellets pour out first.
Dipping the black from the container is the preferred technique.
Pooled or 4.5 0.70 2.0 43.8 0.81 2.3 51.1
Average Values
7.1.3 Transfer each sample to an individual 125-µm sieve.
NOTE 2—Six different materials or samples may be tested when all six
sets of sieves are used. In some labs the position of the sieve may affect
resultswiththehighersievesyieldinghigherfinesdata.Forthisreasonthe
WA = mass of carbon black in receiver after additional 15
center position, sieves 3 and 4, should be used for referee testing.
min shake, total 20 min g, and
S = mass of black tested, g.
7.1.4 Assemble up to six sets of sieves and receivers into a
stack. Place a cover on top and transfer to the shaker. Tighten
9. Report
the shaker to eliminate any looseness. Refer to the user manual
for operation of the vibratory sieve shaker. A vibratory ampli- 9.1 Report the following information:
tude of 1.3 mm should be selected with the vibratory sieve
9.1.1 Proper identification of the sample.
shakers operating at 3600 vpm. However, products that contain 9.1.2 Time duration of shaking.
little or no
...