Standard Test Method for Carbon Black—Sieve Residue

SCOPE
1.1 This test method describes the determination of the water wash sieve residue in regular untreated carbon blacks. It may not be applicable to oil-treated carbon blacks because the oil would prevent proper wetting of the black by water.
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. For specific precautionary statements, see Section 6.

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09-Dec-2001
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ASTM D1514-00 - Standard Test Method for Carbon Black—Sieve Residue
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.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.
Designation: D 1514 – 00
Standard Test Method for
Carbon Black—Sieve Residue
This standard is issued under the fixed designation D 1514; 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 5. Apparatus
1.1 This test method describes the determination of the 5.1 Sieve and Filtering Apparatus, as shown in Fig. 1.
water wash sieve residue in regular untreated carbon blacks. It 5.2 Balance, with a sensitivity of 0.01 g.
may not be applicable to oil-treated carbon blacks because the 5.3 Analytical Balance, with a sensitivity of 0.1 mg.
oil would prevent proper wetting of the black by water. 5.4 Oven, gravity-convection type, capable of temperature
1.2 The values stated in SI units are to be regarded as the regulation within 61°C at 125°C and temperature uniformity
standard. The values in parentheses are for information only. within 65°C.
1.3 This standard does not purport to address all of the 5.5 Sieves of either phosphor bronze or stainless steel. The
safety concerns, if any, associated with its use. It is the sieve shall conform to Specification E 11. The sieve to be used
responsibility of the user of this standard to establish appro- shall be agreed upon between the purchaser and the seller.
priate safety and health practices and determine the applica- 5.6 Weighing Dishes.
bility of regulatory limitations prior to use. For specific
6. Precautions
precautionary statements, see Section 6.
6.1 Keep the apparatus clean at all times to prevent con-
2. Referenced Documents
tamination.
2.1 ASTM Standards: 6.2 Examine the sieves each time they are used to make sure
D 1799 Practice for Carbon Black—Sampling Packaged that no cracks or holes have developed.
Shipments 6.3 Examine the strainer periodically to ascertain that the
D 1900 Practice for Carbon Black—Sampling Bulk Ship- filter screen is in good condition.
ments
7. Sampling
D 4483 Practice for Determining Precision for Test Method
7.1 Samples shall be taken in accordance with Practice
Standards in the Rubber and Carbon Black Industries
E 11 Specification for Wire-Cloth Sieves for Testing Pur- D 1799 or Practice D 1900.
poses
8. Calibration
3. Summary of Test Method
8.1 Calculate the sieve residue to the nearest mg/kg (ppm)
as follows:
3.1 A sample of carbon black is washed with water through
a wire mesh screen of a specified size until all that remains is
R 5 W/S! 3 10 (1)
~
a non-carbon black residue. This residue is dried, weighed, and
the amount of residue is expressed as mg/kg (ppm) of the where:
original sample. R 5 sieve residue, mg/kg (ppm),
W 5 mass of sieve residue, g, and
4. Significance and Use
S 5 mass of sample, g.
4.1 The quantity of sieve residue of carbon black is impor-
9. Procedure
tant in some molded or extruded products as it may relate to the
9.1 Prior to making a test, clean the strainer by opening
surface appearance of those products. The maximum residue in
valves A and B and closing valve C as shown in Fig. 1. Allow
each application is normally determined and agreed to between
the strainer to wash for 2 min.
the user and the producer.
9.2 Close valve B and open valve C. With valves A and C
completely open, regulate the water pressure by means of a
reducing valve. The recommended water pressure is 207 6 34
This test method is under the jurisdiction of ASTM Committee D24 on Carbon
Black and is the direct responsibility of Subcommittee D24.31 on Non-Carbon
kPa (30 6 5 lbf/in. ).
Black Components of Carbon Black.
Current edition approved May 10, 2000. Published July 2000. Originally
published as D 1514 – 57 T. Last previous edition D 1514 – 99.
2 4
Annual Book of ASTM Standards, Vol 09.01. Sieve and filtering apparatus, available from Titan Specialties, Inc., P.O. Box
Annual Book of ASTM Standards, Vol 14.02. 2316, Pampa, TX 70066-2316, has been found suitable.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
D 1514
to utilize wetting agents to facilitate dispersion. Care must be taken to
ensure that all of the solid material is transferred from the vessel used for
dispersing the black into the funnel of the washing apparatus.
9.7 Use a gentle stream of water from the hose attached to
valve D to wash down any carbon black on the sides of the
funnel.
9.8 Continue washing until the wash water coming through
the sieve is clear.
9.9 Remove the sieve holder and sieve from the funnel and
rub the residue lightly with the finger to disaggregate any hard
carbon black lumps which may not have been thoroughly wet
by the water.
9.10 Replace the sieve holder and sieve and wash for an
additional 2 min.
9.11 Remove the sieve holder and sieve and dry for1hat
125°C.
9.12 Transfer the dried residue to a piece of smooth white
bond paper and rub gently to remove any carbon black
remaining on the residue. Rub until the white paper no longer
NOTE 1—Industrial/O.E.M. filter and pleated polyester fabric reusable
cartridges have been found to be a satisfactory strainer. Housing No. 20 shows any smears.
and cartridge No. 30 are available from Amtec, Plymouth Products
NOTE 2—The purpose of gently rubbing the residue is to remove any
Division, 562 Indiana Ave., Sheboygan, WI 53081.
black that may be clinging to the gritty residue. Do not apply excessive
NOTE 2—Corrosion-free piping must be used.
force when rubbing, as this action may fracture the residue allowing it to
NOTE 3—Detailed drawings can be obtained from Test Method
escape, or may trap the residue in the paper causing a low grit
D 1514 – 88a.
determination. Similarly, do not wear gloves when performing this step as
NOTE 4—Spray nozzle: Part No. 460.746.30 BE available from Lechler
the residue may be trapped in the glove material, giving a low result.
Inc., 445 Kautz Rd., St. Charles, IL 60174, or Titan Specialties Inc., P.O.
Box 2316, Pampa, TX 70066-2316.
9.13 Brush all the loose residue to a tared weighing dish and
FIG. 1 Schematic Diagram of Apparatus for Sieve Residue
weigh to the nearest 0.1 mg using the analytical balance.
Determination
10. Report
9.3 After the water pressure has been regulated, attach the
10.1 Report the following information:
sieve holder with a 50 mm (2 in.) diameter sieve to the funnel
10.1.1 Proper identification of the sample,
and allow the water to run through it for 3 min. Stop the
...

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