ASTM D4122-96ae1

Standard Practice for Carbon Black-Evaluation of an Industry Reference Black

SCOPE
1.1 This practice offers guidelines for the production and testing for uniformity of a lot of carbon black to be used as an Industry Reference Black (IRB).  
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

• Status: Historical
• Publication Date: 31-Dec-1995
• ICS: 83.040.20 - Rubber compounding ingredients
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.61 - Carbon Black Sampling and Statistical Analysis

Relations

• Replaced By: ASTM D4122-02 - Standard Practice for Carbon Black—Evaluation of an Industry Reference Black
• Effective Date: 10-Nov-2002
• Referred By: ASTM D8466-22 - Standard Guide for Recovered Carbon Black—Carbon Black Test Methods for Testing rCB
• Effective Date: 01-Jan-1996

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
e1
Designation: D 4122 – 96a
Standard Practice for
Carbon Black—Evaluation of an Industry Reference Black
This standard is issued under the fixed designation D 4122; 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.
e NOTE—Editorial changes were made throughout in January 1997.
1. Scope D 3265 Test Method for Carbon Black—Tint Strength
D 3493 Test Method for Carbon Black—Dibutyl Phthalate
1.1 This practice offers guidelines for the production and
Absorption Number of Compressed Sample
testing for uniformity of a lot of carbon black to be used as an
D 3765 Test Method for Carbon Black—CTAB
Industry Reference Black (IRB).
(Cetyltrimethyl-ammonium Bromide) Surface Area
1.2 The values stated in SI units are to be regarded as the
D 4324 Test Method for Carbon Black, Pelleted—Pellet
standard. The values given in parentheses are for information
Attrition
only.
D 4820 Test Method for Carbon Black—Surface Area by
1.3 This standard does not purport to address all of the
Multipoint B. E. T. Nitrogen Adsorption
safety concerns, if any, associated with its use. It is the
D 5230 Test Method for Carbon Black Automated Indi-
responsibility of the user of this standard to establish appro-
vidual Pellet Crush Strength
priate safety and health practices and determine the applica-
D 5816 Test Methods for Carbon Black—External Surface
bility of regulatory limitations prior to use.
Area by Multipoint Nitrogen Adsorption
2. Referenced Documents
3. Significance and Use
2.1 ASTM Standards:
3.1 These guidelines are intended to ensure that IRBs are
D 412 Test Methods for Vulcanized Rubber and Thermo-
2 evaluated by a standard procedure.
plastic Rubbers and Thermoplastic Elastomers— Tension
3.2 These guidelines are to be used to establish the average
D 1506 Test Methods for Carbon Black—Ash Content
physicochemical and physical rubber properties of a lot of
D 1508 Test Method for Carbon Black, Pelleted—Fines
carbon black to be used as an IRB.
Content
D 1509 Test Methods for Carbon Black—Heating Loss
4. Production, Quality Control, and Quality Assurance
D 1510 Test Method for Carbon Black—Iodine Adsorption
2 4.1 It is assumed that the manufacturer of the IRB will use
Number
state-of-the-art techniques to ensure maximum uniformity
D 1513 Test Method for Carbon Black, Pelleted—Pour
throughout the entire production run of at least 270 000 kg
Density
2 (600 000 lb). The testing called for in this practice is not
D 1514 Test Method for Carbon Black—Sieve Residue
intended to be a substitute for in-process quality control.
D 1618 Test Method for Carbon Extractables—Toluene
2 4.2 It is assumed that the manufacturer of the IRB will use
Discoloration
blending as needed to ensure uniformity throughout the entire
D 1765 Classification System for Carbon Blacks Used in
2 production lot. This interlaboratory study is only adequate to
Rubber Products
verify the quality of a homogeneous lot.
D 2414 Test Method for Carbon Black—n-Dibutyl Phtha-
2 4.3 The bagged black will be segregated into at least twelve
late Absorption Number
23 000-kg (50 000-lb) lots (20 skids). Partial lots of less than
D 3191 Test Methods for Carbon Black Evaluation in SBR
2 23 000 kg (50 000 lb) will be discarded.
(Styrene-Butadiene Rubber)
D 3192 Test Methods for Carbon Black Evaluation in NR
5. Sampling
(Natural Rubber)
5.1 After a suitable time to allow the black to stabilize (30
to 45 days), a bag will be selected from the approximate middle
This practice is under the jurisdiction of ASTM Committee D-24 on Carbon
of each of the 23 000-kg (50 000-lb) lots; the bags selected
Blackand is the direct responsibility of Subcommittee D24.61 on Carbon Black
will be numbered from one through n, where n is the total
Sampling and Statistical Analysis.
number of lots, in order to represent the corresponding 23 000-
Current edition approved April 10, 1996. Published June 1996. Originally
kg (50 000-lb) lots.
published as D 4122 – 82. Last previous edition D 4122 – 96.
Annual Book of ASTM Standards, Vol 09.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 4122
TABLE 1 Industry Reference Black Test Data
Laboratory Number __
Com-
NSA DBP Ab-
pressed
Tensile Multi- sorption, Pour
Day of Tensile 300 % DBP No.,
−5
Tensile Stress at Elonga- Elonga- Iodine STSA point No., 10 Tint Density,
−5
Mix- Strength, Modulus, 10
3 2 3 3
Sample No. Strength, 300 %, tion, % tion, % No., g/kg 10 m /kg Adsorption mg /kg Strength, kg/m
ing and MPa MPa mg /kg
3 3 3
MPa D3191 MPa D3191 D3192A D1510 D 5816 10 (cm /100 D3265 (lb/ft )
Date D3192A D3192A (cm /100
D3191 m /kg g) D1513
g)
D 4820 D2414
D3493
Day No.__ 508 308
Date ____ Prev. IRB 508 308
Day No.__ 508 308
Date ____ Prev. IRB 508 308
Day No.__ 508 308
Date ____ Prev. IRB 508 308
Day No.__ 508 308
Date ____ Prev. IRB 508 308
Day No.__ 508 308
Date ____ Prev. IRB 508 308
Day No.__ 508 308
Date ____ Prev. IRB 508 308
Day No.__ 508 308
Date ____ Prev. IRB 508 308
Day No.__ 508 308
Date ____ Prev. IRB 508 308
Day No.__ 508 308
Date ____ Prev. IRB 508 308
Day No.__ 508 308
Date ____ Prev. IRB 508 308
Day No.__ 508 308
Date ____ Prev. IRB 508 308
Day No.__ 508 308
5.2 n 4-dm (1-gal) samples, numbered from one through n, 6.3.1.6 Pour Density (Test Method D 1513)—Report the
and taken from the corresponding bags, will be sent to each result obtained from an individual determination in kg/m
participant in the interlaboratory study to evaluate the new (lb/ft ) to the nearest whole unit.
IRB.
6.3.1.7 Statistical Thickness Surface Area (STSA) (Test
3 2
5.3 Additionally, a 4-dm (1-gal) sample of the previous
Methods D 5816)— Report single determination in 10 m /kg
IRB taken from a common blended source will also be sent to
(m /g) to the nearest 0.1 unit.
each participant.
6.3.2 Record data onTable 1.
6.4 Rubber Physical Tests:
6. Procedure
6.4.1 Perform the following physical tests in rubber on both
6.1 Test, in order, one of the n samples on each of the one
the new and previous IRB. Test samples mixed in accordance
to n days. These days shall be as near to consecutive as
with Test Methods D 3191 and cure for 35 and 50 min at 145°C
possible.
as well as samples mixed in accordance with Test Methods
6.2 Each day a sample is tested, subject it to all of the test
D 3192, Test Method A, and cure for 30 min at 145°C.
methods described in 6.3, 6.4, and 6.5.
6.4.1.1 In accordance with Test Methods D 412, Test
6.3 Physicochemical Tests:
Method A, test five dumbbells from each cured sheet and
6.3.1 Perform the following physicochemical tests on both
determine the median values of tensile stress at 300 % elon-
the new and previous IRB:
gation, tensile strength, and ultimate elongation.
6.3.1.1 Iodine Adsorption
...