ASTM D869-85(2004)
(Test Method)Standard Test Method for Evaluating Degree of Settling of Paint
Standard Test Method for Evaluating Degree of Settling of Paint
SIGNIFICANCE AND USE
Paints, if not formulated or processed properly may settle excessively. Paint that settles excessively is difficult to reincorporate into the paint system causing time delays or valuable pigment being left in the drum. This test method is an attempt to evaluate the degree of settling caused by the accelerated Test Method D 1309. This very subjective method of evaluation in conjunction with the variables of Test Method D 1309 raises questions as to the usefulness of the results for specification compliance.
SCOPE
1.1 This test method covers the determination of the degree of pigment suspension and ease of remixing a shelf-aged sample of paint to a homogeneous condition suitable for the intended use.
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.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D869–85(Reapproved2004)
Standard Test Method for
Evaluating Degree of Settling of Paint
This standard is issued under the fixed designation D869; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4. Apparatus
1.1 This test method covers the determination of the degree 4.1 Container, standard 500-mL(1-pt) friction-top can paint
3 1
of pigment suspension and ease of remixing a shelf-aged container, 85.5 6 1.5 mm (3 ⁄8 6 ⁄16 in.) in diameter, and 98.5
7 1
sample of paint to a homogeneous condition suitable for the 6 1.5 mm (3 ⁄8 6 ⁄16 in.) in height.
intended use. 4.2 Spatula, weighing 45 6 1 g with square-end blade 125
3 13
1.2 The values stated in SI units are to be regarded as the mm (4 ⁄4 in.) in length and approximately 20 mm ( ⁄16 in.) in
standard. The values given in parentheses are for information width, shall be used to examine the paint for pigment settling
only. and reincorporation characteristics.
1.3 This standard does not purport to address all of the
5. Procedure
safety concerns, if any, associated with its use. It is the
5.1 Place the specimen to be tested for pigment suspension
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- in a 500-mL (1-pt) container, filling the can to within 13 mm
( ⁄2 in.) of the top. Close the can tightly and hold undisturbed
bility of regulatory limitations prior to use.
for shelf aging for 6 months or for such other periods of time
2. Referenced Documents
agreed upon between the purchaser and the seller.
2.1 ASTM Standards: 5.2 Open the can holding the shelf-aged sample without
D1309 Test Method for Settling Properties of Traffic Paints shaking or agitation, and examine the sample without removal
During Storage of supernatant vehicle. Use the spatula to determine the extent
and character of portions of the paint that may have separated
3. Significance and Use
during storage. Prepare a suitable spatula for this purpose by
3.1 Paints, if not formulated or processed properly may
cutting the tip from an ordinary 127-mm (5-in.) flexible steel
settle excessively. Paint that settles excessively is difficult to laboratory spatula to the specified length. Hold the spatula
reincorporate into the paint system causing time delays or
perpendicular to and in the center area of the paint at a height
valuable pigment being left in the drum. This test method is an whereby the bottom edge of the spatula is level with the top of
attempt to evaluate the degree of settling caused by the
the can. Drop the spatula from that position. Rate the condition
accelerated Test Method D1309. This very subjective method of the sample in accordance with 5.4.
of evaluation in conjunction with the variables of Test Method
5.3 After examination of the entire specimen as described in
D1309 raises questions as to the usefulness of the results for 5.2, if a portion of the pigment has separated out to form a firm
specification compliance.
cakeatthebottomofthecontainerpourthesupernatantportion
of the liquid off into a clean container and hold for subsequent
use. Reincorporate the separate cake by hand stirring with the
This test method is under the jurisdiction of ASTM Committee D01 on Paint spatula, adding back the liquid in small amounts until the
and Related Coatings, Materials, andApplications and is the direct responsibility of
pig
...
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