ASTM C772-97

Standard Test Method for Oil Migration or Plasticizer Bleed-Out of Preformed Tape Sealants

SCOPE
1.1 This test method covers a laboratory procedure that can be used to determine the oil migration or plasticizer bleed-out of preformed tape sealants.
1.2 The values stated in acceptable metric 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: 09-Jul-1997
• ICS: 91.100.50 - Binders. Sealing materials
• Technical Committee: C24 - Building Seals and Sealants
• Drafting Committee: C24.20 - General Test Methods

Relations

• Replaced By: ASTM C772-03 - Standard Test Method for Oil Migration or Plasticizer Bleed-Out of Preformed Tape Sealants
• Effective Date: 10-May-2003
• Referred By: ASTM C1281-16(2023) - Standard Specification for Preformed Tape Sealants for Glazing Applications
• Effective Date: 10-Jul-1997

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 772 – 97
Standard Test Method for
Oil Migration or Plasticizer Bleed-Out of Preformed Tape
Sealants
This standard is issued under the fixed designation C 772; 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 sometimes desired in order to improve the penetration of the
tape into the interstices of porous substrates. This test method
1.1 This test method covers a laboratory procedure that can
is designed to indicate whether or not a preformed tape sealant
be used to determine the oil migration or plasticizer bleed-out
exhibits oil or plasticizer migration and, if so, to what extent.
of preformed tape sealants.
1.2 The values stated in acceptable metric units are to be
6. Apparatus
regarded as the standard. The values given in parentheses are
6.1 Vented Air Circulating Oven, that complies with Speci-
for information only.
fication E 145 and is capable of aging samples at 70 6 2°C
1.3 This standard does not purport to address all of the
(158 6 3.6°F) or 100 6 2°C (212 6 3.6°F).
safety concerns, if any, associated with its use. It is the
6.2 Filter Paper, six sheets, high-grade, rapid, 76 mm (3
responsibility of the user of this standard to establish appro-
in.) in diameter.
priate safety and health practices and determine the applica-
6.3 Weight, 1 kg (2.2 lb).
bility of regulatory limitations prior to use.
7. Sampling
2. Referenced Documents
7.1 Select a fresh roll of preformed tape sealant at least 13
2.1 ASTM Standards:
2 mm (0.5 in.) wide and 3 mm (0.125 in.) thick. Remove a
C 717 Terminology of Building Seals and Sealants
2 section of preformed tape sealant approximately 61 cm (2 ft)
D 2203 Test Method for Staining from Sealants
long from the roll and discard it.
E 145 Specification for Gravity-Convection and Forced-
Ventilation Ovens
8. Test Specimens
3. Terminology 8.1 Prepare duplicate test specimens by cutting short lengths
of preformed tape sealant with the release paper still in place
3.1 Definitions—The definitions of the following terms used
and plying them together to form a solid pad having the
in this test method are found in Terminology C 717: preformed
minimum surface dimensions of 38 mm (1.5 in.) by 38 mm and
tape sealant, sealant.
3 mm (0.125 in.) thick.
4. Summary of Test Method 8.2 Place each pad of preformed tape sealant on a piece of
filter paper with the release paper side up.
4.1 The preformed tape sealant to be tested is placed on
8.3 Ensure adequate contact between the preformed tape
filter paper. The specimen is heat aged and examined for
sealant and the filter paper on each specimen by placing the
migration into the filter paper.
1-kg (2.2-lb) weight on top of the preformed tape sealant for 5
5. Significance and Use s.
5.1 Preformed tape sealants are tacky, deformable solids
9. Procedure
that are used under compression between two substrates in a
9.1 Place two additional pieces of filter paper under each of
variety of sealing applications. In general, oil migration or
these test specimens.
plasticizer bleed-out is not desirable. However, in some limited
9.2 Place each of these tape-filter paper assemblies in an air
instances, a controlled amount of plasticizer migration is
circulating oven maintained at 70 6 2°C (158 6 3.6°F) and
This test method is under the jurisdiction of ASTM Committee C24 on Building
Seals and Sealants and is the direct responsibility of Subcommittee C24.20 on This test method was based on the use of Whatman No. 1 filter paper. The sole
General Sealant Standards. source of supply of the apparatus known to the committee at this time is Whatman
Current edition approved Jul
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