ASTM D3191-00
(Test Method)Standard Test Methods for Carbon Black in SBR (Styrene-Butadiene-Rubber)-Recipe and Evaluation Procedures
Standard Test Methods for Carbon Black in SBR (Styrene-Butadiene-Rubber)-Recipe and Evaluation Procedures
SCOPE
1.1 These test methods cover the standard materials, test formula, mixing procedure, and test methods for the evaluation and production control of carbon blacks in styrene butadiene rubber (SBR).
1.2 The values stated in SI units are to be regarded as the standard. The values 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)
Designation: D 3191 – 00
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 3. Significance and Use
1.1 These test methods cover the standard materials, test 3.1 The major portion of carbon black consumed by the
formula, mixing procedure, and test methods for the evaluation rubber industry is used to improve the physical properties, life
and production control of carbon blacks in styrene butadiene expectancy, and utility of rubber products. These test methods
rubber (SBR). provide an SBR recipe and directions for evaluating all types of
1.2 The values stated in SI units are to be regarded as the carbon black intended for use in rubber products. Other
standard. The values in parentheses are for information only. procedures are available elsewhere in the ASTM standards for
1.3 This standard does not purport to address all of the the evaluation of carbon black itself.
safety concerns, if any, associated with its use. It is the 3.2 These test methods may be used to characterize carbon
responsibility of the user of this standard to establish appro- black in terms of specific properties of the standard compound.
priate safety and health practices and determine the applica- These test methods are useful for the quality assurance of
bility of regulatory limitations prior to use. carbon black production. They may also be used for the
preparation of reference compounds, to confirm the day-to-day
2. Referenced Documents
reliability of testing operations used in the rubber industry, for
2.1 ASTM Standards:
the evaluation of experimental compounds, and quality control
D 412 Test Methods for Vulcanized Rubber and Thermo- of production compounds.
2
plastic Rubbers and Thermoplastic Elastomers—Tension
4. Standard Test Formula
D 1646 Test Method for Rubber —Viscosity, Stress Relax-
ation, and Pre-Vulcanization Characteristics (Mooney Vis- 4.1 Standard Formula:
2
A
cometer)
Material IRM Quantity,
No. parts by
D 1799 Practice for Carbon Black—Sampling Packaged
mass
2
Shipments
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
SBR-1500 . 100.00
B,C
2
Zinc oxide 91 3.00
ments
B,C
Sulfur 31 1.75
D 2084 Test Method for Rubber Property—Vulcanization
B,C
Stearic acid 21 1.00
2
Using Oscillating Disk Cure Meter Carbon black . 50.00
C,D
TBBS . 1.00
D 3182 Practice for Rubber—Materials, Equipment, and
Total 156.75
Procedures for Mixing Standard Compounds and Prepar-
E
2 Batch factor:
ing Standard Vulcanized Sheets
A
IRM 91 is available from R. E. Carroll, Inc., 1570 North Olden Ave., Trenton, NJ
D 3396 Practice for Carbon Black—Measuring the Preci-
08638; (800) 257–9365. IRM 21 and IRM 31 are available from Akron Rubber
2
sion of ASTM Test Methods
Development Lab, 2887 Gilchrist Road, Akron, OH 44305; (330) 794–6600.
B
For the MIM procedure, it is recommended that a blend of compounding
D 3674 Test Method for Carbon Black—Relative Extrusion
2 materials be prepared to improve accuracy of the weighing of these materials. This
Mass
material blend is prepared by blending a proportional mass of each material in a
D 4483 Practice for Determining Precision for Test Method
dry powder blender such as a biconical blender or vee blender. A mortar and pestle
2
may be used for blending small quantities.
Standards in the Rubber and Carbon Black Industries
C
For mill mixes, weigh the rubber and carbon black to the nearest 1.0 g, the
E 145 Specification for Gravity-Convection and Forced-
sulfur and the accelerator to the nearest 0.02 g, and all of the other compounding
3
Ventilation Ovens
materials to the nearest 0.1 g. For MIM mixes, weigh the rubber and material blend
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.
E
For the mill mixes, a batch factor should be selected to the nearest 0.5 to give
1
These test methods are under the jurisdiction of ASTM Committee D24 on
as large a total mass as possible that will not exceed 525.0 g. Calculate all parts
Carbon Black and are the direct responsibility of Subcommittee D24.71 on Carbon
to the nearest 0.01 part. For MIM mixes, calculate a batch factor to the nearest
Black Testing in Rubber.
0.01 that will provide a 75% loading of the mixing chamber.
Current edition approved May 10, 2000. Published July 2000. Originally
published as D 3191 – 73. Last previous edition D 3191 – 97.
5. Sampling and Sample Preparation
2
Annual Book of ASTM Standards, Vol 09.01.
3
Annual Book of ASTM Standards, Vol 14.02. 5.1 Samples shall be taken in accordance with Practice
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