ASTM D3265-02
(Test Method)Standard Test Method for Carbon Black—Tint Strength
Standard Test Method for Carbon Black—Tint Strength
SCOPE
1.1 This test method covers the determination of the tint strength of carbon black relative to an industry tint reference black (ITRB).
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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
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Standards Content (Sample)
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
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Designation: D 3265 – 02
Standard Test Method for
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Carbon Black—Tint Strength
This standard is issued under the fixed designation D 3265; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Significance and Use
1.1 This test method covers the determination of the tint 4.1 For the broad range of commercial rubber grade carbon
strength of carbon black relative to an industry tint reference blacks, tint strength is highly dependent upon particle size. Tint
black (ITRB). strength can be used as an indication of particle size; however,
1.2 The values stated in SI units are to be regarded as the tint strength is also dependent on structure and aggregate size
standard. The values given in parentheses are for information distribution. Therefore, differences in tint strength within
only. grades of carbon black may reflect differences other than
1.3 This standard does not purport to address all of the particle size.
safety concerns, if any, associated with its use. It is the
NOTE 1—This test method was developed primarily for the character-
responsibility of the user of this standard to establish appro-
ization of N100, N200, and N300 series carbon blacks.
priate safety and health practices and determine the applica-
5. Apparatus
bility of regulatory limitations prior to use.
5.1 Analytical Balance, with a sensitivity of 60.1 mg.
2. Referenced Documents
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5.2 Automatic Muller.
2.1 ASTM Standards:
5.3 Photometric Instrument, capable of detecting differ-
D 1799 Practice for Carbon Black—Sampling Packaged
ences in the amount of light reflectance between shades of
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,
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Shipments
gray. The instrument is to be operated following the manu-
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
facturer’s instructions for optimum performance.
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ments
5.4 Oven, Gravity-Convection Type, capable of temperature
D 4483 Practice for Determining Precision for Test Method
regulation within 61°C at 125°C (62°F at 257°F) and
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Standards in the Rubber and Carbon Black Industries
temperature uniformity within 65°C (69°F).
D 4821 Guide for Carbon Black—Validation of Test
5.5 Reflectance Standards, as required for each reflectance
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Method Precision and Bias
instrument for checking calibration.
5.6 Spatulas, 100 to 150 mm (4 to 6 in.), two, flexible,
3. Summary of Test Method
tapered.
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3.1 A carbon black sample is mixed with a white powder
5.7 Syringe, 5-cm , automatic refilling, reproducible to
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(zinc oxide) and a liquid vehicle (soybean oil epoxide) to
60.02 cm .
produce a black or gray paste. This paste is then spread to
5.8 Wiping Tissue, absorbent and lint free.
produce a surface suitable for measuring the reflectance of the
5.9 Paste Application Apparatus—Any one of the following
mixture by means of a photo-electric reflectance meter. The
groups of equipment may be used:
reflectance of the tested sample is then compared to the
5.9.1 Apparatus for Film Drawdown Method:
reflectance of the ITRB prepared in the same manner. The tint 6
5.9.1.1 Film Applicator, 0.076 mm (0.003 in.) in depth.
strength of the tested sample is expressed as units of the
reflectance of the ITRB divided by the reflectance of the
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sample and multiplied by 100. Hoover Automatic Muller, Model M5, available from Hoover Color Corp., P.O.
Box 218, State Highway 693, Hiwassee, VA 24347, has been found satisfactory for
this test method.
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The following instruments have been found satisfactory for this test method:
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This test method is under the jurisdiction of ASTM Committee D24 on Carbon Erichsen Tint Tester 527, available from T. G. Bell, Inc., 1340 Home Ave.,
Black and is the direct responsibility of Subcommittee D24.11 on Absorptive Akron, OH 44310, and Hunter MiniScan XE or XE Plus, available from Hunter
Properties of Carbon Black. Associates Laboratory, Inc., 11491 Sunset Hills Road, Reston, Virginia 22090-5280.
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Current edition approved Nov. 10, 2002. Published January 2003. Originally Users of Densicron photometers should refer to Test Method D 3265 - 01.
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approved in 1973. Last previous edition approved in 2001 as D 3265 – 01. Film Applicator, Catalog No. AR-5257, available from Byk-Gardner, Ph. (800)
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Annual Book of ASTM Standards, Vol 09.01. 343-7721, http://byk-gardnerusa.com.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D3265–02
5.9.1.2 Polish
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