ASTM D3191-02

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Designation:D3191–02
Standard Test Methods for
Carbon Black in SBR (Styrene-Butadiene Rubber)—Recipe
1
and Evaluation Procedures
This standard is issued under the fixed designation D 3191; 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 E 145 Specification for Gravity-Convection and Forced-
3
Ventilation Ovens
1.1 These test methods cover the standard materials, test
formula, mixing procedure, and test methods for the evaluation
3. Significance and Use
and production control of carbon blacks in styrene butadiene
3.1 The major portion of carbon black consumed by the
rubber (SBR).
rubber industry is used to improve the physical properties, life
1.2 The values stated in SI units are to be regarded as the
expectancy, and utility of rubber products. These test methods
standard. The values in parentheses are for information only.
provideanSBRrecipeanddirectionsforevaluatingalltypesof
1.3 This standard does not purport to address all of the
carbon black intended for use in rubber products. Other
safety concerns, if any, associated with its use. It is the
procedures are available elsewhere in the ASTM standards for
responsibility of the user of this standard to establish appro-
the evaluation of carbon black itself.
priate safety and health practices and determine the applica-
3.2 These test methods may be used to characterize carbon
bility of regulatory limitations prior to use.
black in terms of specific properties of the standard compound.
2. Referenced Documents These test methods are useful for the quality assurance of
carbon black production. They may also be used for the
2.1 ASTM Standards:
preparation of reference compounds, to confirm the day-to-day
D 412 Test Methods for Vulcanized Rubber and Thermo-
2
reliability of testing operations used in the rubber industry, for
plastic Elastomers—Tension
the evaluation of experimental compounds, and quality control
D 1646 Test Method for Rubber —Viscosity, Stress Relax-
of production compounds.
ation, and Pre-Vulcanization Characteristics (Mooney Vis-
2
cometer)
4. Standard Test Formula
D 1799 Practice for Carbon Black—Sampling Packaged
2 4.1 Standard Formula:
Shipments
A
Material IRM Quantity,
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
No. parts by
2
ments
mass
D 2084 Test Method for Rubber Property—Vulcanization
2
SBR-1500 . 100.00
Using Oscillating Disk Cure Meter
B,C
Zinc oxide 91 3.00
D 3182 Practice for Rubber—Materials, Equipment, and B,C
Sulfur 31 1.75
B,C
Procedures for Mixing Standard Compounds and Prepar- Stearic acid 21 1.00
2
Carbon black . 50.00
ing Standard Vulcanized Sheets
C,D
TBBS . 1.00
D 3674 Test Method for Carbon Black—Relative Extrusion
Total 156.75
2
Mass
E
Batch factor:
D 4483 Practice for Determining Precision for Test Method
A
IRM 91 is available from R. E. Carroll, Inc., 1570 North Olden Ave., Trenton, NJ
2
Standards in the Rubber and Carbon Black Industries
08638; (800) 257–9365. IRM 21 and IRM 31 are available from Akron Rubber
Development Lab, 2887 Gilchrist Road, Akron, OH 44305; (330) 794–6600.
D 5289 Test Method for Rubber Property—Vulcanization
B
For the MIM procedure, it is recommended that a blend of compounding
2
Using Rotorless Cure Meters
materials be prepared to improve accuracy of the weighing of these materials. This
material blend is prepared by blending a proportional mass of each material in a
dry powder blender such as a biconical blender or vee blender. A mortar and pestle
1
may be used for blending small quantities.
These test methods are under the jurisdiction of ASTM Committee D24 on
C
For mill mixes, weigh the rubber and carbon black to the nearest 1.0 g, the
Carbon Black and are the direct responsibility of Subcommittee D24.71 on Carbon
sulfur and the accelerator to the nearest 0.02 g, and all of the other compounding
Black Testing in Rubber.
Current edition approved June 10, 2002. Published July 2002. Originally
published as D 3191 – 73. Last previous edition D 3191 – 00.
2 3
Annual Book of ASTM Standards, Vol 09.01. Annual Book of ASTM Standards, Vol 14.04.
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D3191
materials to the nearest 0.1 g. For MIM mixes, weigh the rubber and material blend
Total Time 24.0
to the nearest 0.01 g and individual pigments, if used, to the nearest 0.001 g.
D
TBBS is N-tert-butyl-w-benzothiazolesulfenamide.
6.2.1.9 Sheet off the stock from the mill at a setting to
E
For the mill mixes, a batch factor should be selected to the
...