ASTM C907-98

Standard Test Method for Tensile Adhesive Strength of Preformed Tape Sealants by Disk Method

SCOPE
1.1 This test method covers a laboratory procedure for determining the tensile adhesive strength of a preformed tape sealant. The type of failure can be determined, and the degree of cohesive/adhesive failure can be estimated.
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 problems, 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: 31-Dec-1992
• 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 C907-03 - Standard Test Method for Tensile Adhesive Strength of Preformed Tape Sealants by Disk Method
• Effective Date: 10-May-2003

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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.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 907 – 98
Standard Test Method for
Tensile Adhesive Strength of Preformed Tape Sealants by
Disk Method
This standard is issued under the fixed designation C 907; 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 provides an indication of the cohesive nature and adhesive
bonding properties of the preformed tape sealant. This proce-
1.1 This test method covers a laboratory procedure for
dure is not intended to simulate actual use conditions.
determining the tensile adhesive strength of a preformed tape
sealant. The type of failure can be determined, and the degree
6. Apparatus and Accessory Materials
of cohesive/adhesive failure can be estimated.
6.1 Test Fixture, fabricated of aluminum (mill finish), in
1.2 The values stated in metric (SI) units are to be regarded
accordance with Fig. 1.
as the standard. The values given in parentheses are provided
for information purposes only.
NOTE 1—Other substrates may be substituted in 6.1.
1.3 This standard does not purport to address all of the
6.2 Tensile Testing Machine, or equivalent, with a jaw
safety concerns, if any, associated with its use. It is the
separation rate of 51 mm (2 in.)/min.
responsibility of the user of this standard to establish appro-
6.3 Auxiliary Hardware, for attachment of the test fixture to
priate safety and health practices and determine the applica-
the tensile tester.
bility of regulatory limitations prior to use.
6.4 Knife.
6.5 Compression Device, such as a vise, press, or equiva-
2. Referenced Documents
lent.
2.1 ASTM Standards:
6.6 Device, for recording the tension load in newtons (or
C 717 Terminology of Building Seals and Sealants
pounds-force).
6.7 Solvent, such as xylol or toluol.
3. Terminology
6.8 Wiping Cloths, lint-free.
3.1 Definitions—The definitions of the following terms used
in this test method are found in Terminology C 717: adhesive
7. Sampling
failure; cohesive failure; preformed tape sealant; sealant; and
7.1 Samples to be tested shall be taken from a fresh roll of
substrate.
preformed tape sealant after first removing and discarding the
first 600 mm (2 ft) of the roll.
4. Summary of Test Method
7.2 Condition the sample at 23 6 2°C (73.4 6 3.6°F) and 50
4.1 The preformed tape sealant is compressed between two
6 10 % relative humidity for a minimum of 24 h before
aluminum disks. The disks are pulled apart in a tensile tester to
preparing the test specimens.
failure. The maximum tensile strength and failure mode are
recorded.
8. Test Specimens
8.1 Prepare two test specimens as follows:
5. Significance and Use
8.1.1 Clean the surface of the test fixture with clean solvent
5.1 Preformed tape sealants are tacky, deformable solids,
to remove grease, oil, or residue from previous test, and dry.
that are used under compression between two or more sub-
8.1.2 Set the allen screw stop so that when the disks are
strates, in various sealing applications where the surfaces may
assembled and the dowel is seated against it, the distance
be of similar or dissimilar materials. This procedure measures
between the parallel disk surfaces is 3.2 mm (0.125 in.).
the tensile strength of the preformed tape sealant. It also
8.1.3 Place sufficient preformed tape sealant on the face of
the fixture so that when mated with the matching face, the
entire 3.2-mm (0.125-in.) gap will be filled.
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
8.1.4 After mating, uniformly compress the test fixture in
General Sealant Standards.
the compression device until the dowel contacts the allen screw
Current edition approved May 10, 1998. Published August 1998. Originally
stop. Check to make sure the entire 3.2-mm (0.125-in.) gap is
published as C 907 – 79. Last previous edition C 907 – 93.
filled with sealant. Compress at the rate of 51 mm (2 in.)/min
Annual Book of ASTM Standards, Vol 04.07.
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