ASTM D3192-05

Standard Test Methods for Carbon Black Evaluation in NR (Natural Rubber)

SIGNIFICANCE AND USE
The major portion of carbon black consumed by the rubber industry is used to improve the physical properties, life expectancy, and utility of rubber products. These test methods provide a natural rubber formulation and directions for evaluating carbon black intended for use in rubber products.
These test methods may be used to characterize carbon black in terms of specific properties of the standard compound. These test methods are useful for the quality assurance of carbon black production. They may also be used for the preparation of reference compounds, to confirm the day-to-day reliability of testing operations used in the rubber industry, for the evaluation of experimental compounds, and quality control of production compounds.
SCOPE
1.1 These test methods cover the standard materials, test formulation, mixing procedure, and test methods for the evaluation and production control of carbon blacks in natural rubber (NR).
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

• Status: Historical
• Publication Date: 31-May-2005
• ICS: 83.040.20 - Rubber compounding ingredients
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.71 - Carbon Black Testing in Rubber

Relations

• Replaces: ASTM D3192-02 - Standard Test Methods for Carbon Black Evaluation in NR (Natural Rubber)
• Effective Date: 01-Jun-2005
• Replaced By: ASTM D3192-09 - Standard Test Methods for Carbon Black Evaluation in NR (Natural Rubber)
• Effective Date: 01-May-2009
• Referred By: ASTM D8491-23 - Standard Test Method for Recovered Carbon Black—Rheological Non-Linearity of a Rubber Compound by Fourier Transform Rheology
• Effective Date: 01-Jun-2005
• Referred By: ASTM D8466-22 - Standard Guide for Recovered Carbon Black—Carbon Black Test Methods for Testing rCB
• Effective Date: 01-Jun-2005
• Referred By: ASTM D4122-17(2023) - Standard Practice for Carbon Black—Evaluation of an Industry Reference Black
• Effective Date: 01-Jun-2005
• Referred By: ASTM D5817-20 - Standard Practice for Carbon Black, Pelleted—Reduction, Blending, and Drying of Gross Samples for Testing
• Effective Date: 01-Jun-2005

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
Designation:D3192–05
Standard Test Methods for
1
Carbon Black Evaluation in NR (Natural Rubber)
This standard is issued under the fixed designation D 3192; 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 provide a natural rubber formulation and directions for evalu-
ating carbon black intended for use in rubber products.
1.1 These test methods cover the standard materials, test
3.2 These test methods may be used to characterize carbon
formulation, mixing procedure, and test methods for the
black in terms of specific properties of the standard compound.
evaluation and production control of carbon blacks in natural
These test methods are useful for the quality assurance of
rubber (NR).
carbon black production. They may also be used for the
1.2 The values stated in SI units are to be regarded as the
preparation of reference compounds, to confirm the day-to-day
standard. The values in parentheses are for information only.
reliability of testing operations used in the rubber industry, for
1.3 This standard does not purport to address all of the
the evaluation of experimental compounds, and quality control
safety concerns, if any, associated with its use. It is the
of production compounds.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Standard Test Formula
bility of regulatory limitations prior to use.
4.1 Standard Formula:
A
2. Referenced Documents
Material IRM No. Quantity, parts
by mass
2
2.1 ASTM Standards:
B
D 412 Test Methods for Vulcanized Rubber and Thermo- Natural rubber . 100.00
Stearic acid 21 3.00
plastic Elastomers—Tension
Zinc oxide 91 5.00
D 1799 Practice for Carbon Black—Sampling Packaged
Benzothiazyl disulfide 2 0.60
Shipments
Sulfur 31 2.50
C
Carbon black . 50.00
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
Total 161.10
ments
D
Batch factor:
D 2084 Test Method for Rubber Property—Vulcanization
Test Method A—Mill 4.00
Using Oscillating Disk Cure Meter
Test Method B—Internal Mixer 6.00
Test Method C—Miniature Internal 0.40
D 3182 Practice for Rubber—Materials, Equipment, and
Mixer
Procedures for Mixing Standard Compounds and Prepar-
_____________
ing Standard Vulcanized Sheets
A
IRM91isavailablefromR.E.Carroll,Inc.,1570NorthOldenAve.,Trenton,NJ
D 4483 Practice for Evaluating Precision for Test Method
08638; (800) 257–9365. IRM 2, IRM 21, and IRM 31 are available from Akron
Standards in the Rubber and Carbon Black Manufacturing
Rubber Development Lab, 2887 Gilchrist Road, Akron, OH 44305; (330)
794–6600.
Industries
B
SMR L and STR L have been found to give satisfactory performance. Other
3. Significance and Use sources of rubber may give satisfactory results but have not been investigated by
Subcommittee D24.71. Other sources of rubber should be checked to ensure that
3.1 The major portion of carbon black consumed by the
results equivalent to SMR L are attained before using in this test method.
rubber industry is used to improve the physical properties, life C
Use 75.00 parts by mass of carbon blacks in the N-800 and N-900 series.
D
expectancy, and utility of rubber products. These test methods
Weighrubberandcarbonblacktothenearest1g,sulfurandacceleratortothe
nearest 0.02 g, and all other compounding materials to the nearest 0.1 g.
1
These test methods are under the jurisdiction of ASTM Committee D24 on 5. Sampling and Sample Preparation
Carbon Black and are the direct responsibility of Subcommittee D24.71 on Carbon
5.1 Samples shall be taken in accordance with Practice
Black Testing in Rubber.
D 1799 or Practice D 1900.
Current edition approved June 1, 2005. Published June 2005. Originally
approved in 1973. Last previous edition approved in 2002 as D 3192 - 02.
5.2 The carbon black shall be conditioned before weighing
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and mixing by heating for1hinan oven set at 125 6 1°C.The
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
black shall be placed in an open vessel of suitable dimensions
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. so that the depth of black is no more than 10 mm during
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D3192–05
conditioning.The black conditioned as above shall be stored in carbon black: (1) Test Method A—Mill Mix, (2) Test Method
a closed moisture-proof container until ready for mixing.
...