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ASTM C772-03

(Test Method)

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

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

SIGNIFICANCE AND USE
Preformed tape sealants are tacky, deformable solids that are used under compression between two substrates in a variety of sealing applications. In general, oil migration or plasticizer bleed-out is not desirable. However, in some limited instances, a controlled amount of plasticizer migration is sometimes desired in order to improve the penetration of the tape into the interstices of porous substrates. This test method is designed to indicate whether or not a preformed tape sealant exhibits oil or plasticizer migration and, if so, to what extent.
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 The subcommittee with jurisdiction is not aware of any similar ISO standard.
1.4 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-May-2003
ICS
91.100.50 - Binders. Sealing materials
Technical Committee
C24 - Building Seals and Sealants
Drafting Committee
C24.20 - General Test Methods
Current Stage
Ref Project

Relations

Replaces
ASTM C772-97 - Standard Test Method for Oil Migration or Plasticizer Bleed-Out of Preformed Tape Sealants
Effective Date
10-May-2003
Replaced By
ASTM C772-03(2009) - Standard Test Method for Oil Migration or Plasticizer Bleed-Out of Preformed Tape Sealants
Effective Date
01-Jan-2009
Referred By
ASTM C1281-16(2023) - Standard Specification for Preformed Tape Sealants for Glazing Applications
Effective Date
10-May-2003

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ASTM C772-03 - Standard Test Method for Oil Migration or Plasticizer Bleed-Out of Preformed Tape SealantsASTM C772-03 - Standard Test Method for Oil Migration or Plasticizer Bleed-Out of Preformed Tape Sealants
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ASTM C772-03 - Standard Test Method for Oil Migration or Plasticizer Bleed-Out of Preformed Tape Sealants
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C772–03
Standard Test Method for
Oil Migration or Plasticizer Bleed-Out of Preformed Tape
1
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 plasticizer bleed-out is not desirable. However, in some limited
instances, a controlled amount of plasticizer migration is
1.1 This test method covers a laboratory procedure that can
sometimes desired in order to improve the penetration of the
be used to determine the oil migration or plasticizer bleed-out
tape into the interstices of porous substrates. This test method
of preformed tape sealants.
is designed to indicate whether or not a preformed tape sealant
1.2 The values stated in acceptable metric units are to be
exhibits oil or plasticizer migration and, if so, to what extent.
regarded as the standard. The values given in parentheses are
for information only.
6. Apparatus
1.3 The subcommittee with jurisdiction is not aware of any
6.1 Vented Air Circulating Oven, that complies with Speci-
similar ISO standard.
fication E 145 and is capable of aging samples at 70 6 2°C
1.4 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
4
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-
3
Ventilation Ovens
8. Test Specimens
3. Terminology 8.1 Prepareduplicatetestspecimensbycuttingshortlengths
of preformed tape sealant with the release paper still in place
3.1 Definitions—Thedefinitionsofthefollowingtermsused
and plying them together to form a solid pad having the
in this test method are found inTerminology C 717: preformed
minimumsurfacedimensionsof38mm(1.5in.)by38mmand
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.
1
ThistestmethodisunderthejurisdictionofASTMCommitteeC24onBuilding
4
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 May 10, 2003. Published June 2003. Originally Inc., 9 Bridewell Place, Clifton, NJ 07014. If you are aware of alternative suppliers,
approved in 1974. Last previous edition approved in 1997 as C 772 – 97. pleaseprovidethisinformationtoASTMHeadquarters.Yourcommentswillreceive
2 1
Annual Book of ASTM Standards, Vol 04.07. careful consideration at a meeting of the responsible technical committee, which
3
Annual Book of ASTM Standards, Vol 14.04. you may attend.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C772–03
9.2 Place each of these tape-filter paper assemblies in an air 10.1.5 For each specimen, whether there is any evidence of
circulating oven maintained at 70 6 2°C (158 6 3.6°F) and stain, oil migration, or plasticizer bleed-out on the first filter
condition them for 3 weeks at this temperature. (Alternatively, paper directly under the pad of tape compound.
samples can be conditioned for 1 week at 100 6 2°C (212 6
N
...

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5.1 Preformed tape sealants are tacky, deformable solids that are used under compression between two substrates in a variety of sealing applications. This procedure measures the softness of a preformed tape sealant and gives an indication of the preformed tape sealant's ease of compression during installation. The resistance to penetration may also give an indication of the toughness of the preformed tape sealant.
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