ASTM D2452-94(1999)e1

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
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e1
Designation: D 2452 – 94 (Reapproved 1999)
Standard Test Method for
Extrudability of Oil- and Resin-Base Caulking Compounds
This standard is issued under the fixed designation D 2452; 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—An editorial change was made in 1.1 in February 1999.
1. Scope 5.5 Stop Watch.
5.6 Spatula (Steel).
1.1 This test method describes the laboratory procedure for
5.7 Weight-per-gallon Cup, capacity 83.2 cm .
determining the rate of extrusion of oil- and resin-base caulk-
ing compounds.
6. Reagent
1.2 The values stated in metric (SI) units are to be regarded
6.1 Solvent, such as methyl ethyl ketone.
as the standard. The values given in parentheses are provided
for information only.
7. Sampling
1.3 This standard does not purport to address all of the
7.1 The compound to be tested shall be taken from a
safety concerns, if any, associated with its use. It is the
previously unopened container and thoroughly mixed before
responsibility of the user of this standard to establish appro-
using.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
8. Conditioning
8.1 After thoroughly cleaning the press-flow rheometer with
2. Referenced Documents
solvent, condition the compound and the rheometer in the
2.1 ASTM Standards:
laboratory for at least5hat23 6 2°C (73.4 6 3.6°F).
C 717 Terminology of Building Seals and Sealants
D 1475 Test Method for Density of Paint, Varnish, Lacquer
9. Procedure
and Related Products
9.1 Remove the orifice holder from the rheometer cylinder
and hold the open end up, making sure that the follower plate
3. Terminology
remains inside.
3.1 Definitions—Definitions of the following terms are
9.2 Fill the cylinder with compound, avoiding air pockets.
found in Terminology C 717: caulking compound, compound,
Strike off the filled cylinder with a spatula and replace the
sealant.
bottom orifice cap. Connect the tube to an air supply and fix it
4. Significance and Use to a support stand above the balance.
9.3 Adjust the air pressure to 207 kPa (30 psi) and open the
4.1 The rate of extrusion determined by this test may be
air valve. If the pressure drops, readjust to 207 kPa while
correlated with the rate of gunning of the compound.
extrusion is in progress. Close the air valve and discard this
5. Apparatus extruded compound. The apparatus is now ready for testing.
9.4 Open the air valve and start the stop watch simulta-
5.1 Press-Flow Extrusion Rheometer constructed in accor-
neously. After extruding approximately 50 g of compound,
dance with Fig. 1.
close the air valve and stop the stop watch simultaneously.
5.2 Air Supply and Pressure Gage, accurate to 6.9 kPa (1
Weigh to the nearest 0.01 g the amount of compound extruded.
psi).
9.5 Calculate the seconds per gram by dividing the number
5.3 Clamps and Stand to hold rheometer.
of seconds elapsed by the number of grams extruded, and
5.4 Balance, accurate to 0.01 g.
designate this as value S.
9.6 Convert the value S to seconds per millilitre after
This test method is under the jurisdiction of ASTM Committee C24 on Building determining the specific gravity of the compound using the
Seals and Sealants, and is the direct responsibility of Subcommittee C24.20 on
weight-per-gallon cup and Test Method D 1475.
General Sealent Standards.
Current edition approved April 15, 1994. Published June 1994. Origi
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