ASTM D716-86(2003)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D716–86(Reapproved2003)
Standard Test Methods for
Evaluating Mica Pigment
This standard is issued under the fixed designation D 716; 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 replaced by a conical funnel having a bottom opening 25 mm
(1 in.) in diameter. It may be found necessary to replace the top
1.1 These test methods cover the evaluation of mica pig-
glassbafflewithonethatislongertoensurethatallofthesifted
ment.
mica is caught.
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
5. Procedure
only.
5.1 Transfer convenient quantities of the mica pigment to
1.3 This standard does not purport to address all of the
the funnel of the modified volumeter and brush the pigment
safety concerns associated with its use. It is the responsibility
through the screen with a camel-hair brush until the receiver is
of the user of this standard to establish appropriate safety and
slightly more than full. Scrape off the excess and weigh the
health practices and determine the applicability of regulatory
pigment. Care must be taken not to jar the apparatus during the
limitations prior to use.
procedure.
2. Referenced Documents
6. Calculation
2.1 ASTM Standards:
6.1 Calculate the apparent density of the mica pigment and
D 185 Test Methods for Coarse Particles in Pigments,
2 convert to pounds per cubic foot.
Pastes, and Paints
D 280 Test Methods for Hygroscopic Moisture (and Other
7. Report
Matter Volatile Under the Test Conditions) in Pigments
7.1 Report the mean of three determinations as the apparent
E 11 Specification for Wire Cloth Sieves for Testing Pur-
3 density of the mica pigment.
poses
8. Reproducibility of Results
3. Significance and Use
8.1 The mean of the three determinations should check
3.1 These test methods are used to determine apparent
within 5 %.
density of mica pigments and the grit level.This information is
significant to the user of mica pigments for inclusion in
MOISTURE AND OTHER VOLATILE MATTER
coatings.
9. Procedure
APPARENT DENSITY
9.1 Determine the moisture and other volatile matter in
accordance with Test Methods D 280.
4. Apparatus
4.1 Volumeter —A Scott volumeter or similar apparatus
GRIT
modified as follows: The screen used shall conform to the
requirements of a No. 40 (425-µm) sieve as prescribed in
10. Apparatus
Specification E 11. The funnel below the screen shall be
10.1 Beaker, 600-mL, low-form.
10.2 MetalTubing—An L-shape metal tube (Fig. 1) 6.4 mm
( ⁄4 in.) in outside diameter with a foot 25 mm (1 in.) in length.
These test methods are under the jurisdiction of ASTM Committee D01 on
The foot of the tube shall be drilled to 4.4 mm (0173 in.) (No.
Paint and Related Coatings, Materials, and Applications and are the direct
responsibility of Subcommittee D01.31 on Pigment Specifications. 17 drill) in inside diameter for a depth of 12.7 mm ( ⁄2 in.).The
Current edition approved Oct. 1, 2003. Published October 2003. Originally
tube shall be placed in the beaker with the long arm in the
approved in 1943. Last previous edition approved in 1986 as D 716 – 86 (1999).
vertical position, and the foot of the Lparallel to the bottom of
Annual Book of ASTM Standards, Vol 06.03.
the beaker and perpendicular to the radius of the bottom at a
Annual Book of ASTM Standards, Vol 14.02.
The volumeter is no longer generally available. As of June 1986 only one
point such that there is about 1.5-mm ( ⁄16-in.) c
...