ASTM D3807-98
(Test Method)Standard Test Method for Strength Properties of Adhesives in Cleavage Peel by Tension Loading (Engineering Plastics-to-Engineering Plastics)
Standard Test Method for Strength Properties of Adhesives in Cleavage Peel by Tension Loading (Engineering Plastics-to-Engineering Plastics)
SCOPE
1.1 This test method covers the determination of the comparative cleavage/peel strengths of adhesives for bonding engineering plastics when tested on a standard specimen and under specific conditions of preparation and testing.
1.2 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.
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Designation: D 3807 – 98
Standard Test Method for
Strength Properties of Adhesives in Cleavage Peel by
Tension Loading (Engineering Plastics-to-Engineering
Plastics)
This standard is issued under the fixed designation D 3807; 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 4.2 Cleavage/peel forces are common in bonded assemblies.
This test method gives information as to the performance of
1.1 This test method covers the determination of the com-
substrate/adhesive combinations under cleavage/peel forces.
parative cleavage/peel strengths of adhesives for bonding
engineering plastics when tested on a standard specimen and
5. Apparatus
under specific conditions of preparation and testing.
5.1 Tension Testing Machine, capable of applying a tensile
1.2 The values stated in SI units are to be regarded as the
load having the following prescribed conditions:
standard. The values given in parentheses are for information
5.1.1 Select the machine and loading range so that the
only.
maximum load on the specimen falls between 15 and 85 % of
1.3 This standard does not purport to address all of the
the upper limit of the loading range.
safety concerns, if any, associated with its use. It is the
5.1.2 Maintain the rate of movement between heads to be
responsibility of the user of this standard to establish appro-
essentially constant under fluctuating loads.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
NOTE 1—It is difficult to meet this requirement when loads are
measured with a spring-type or pendulum-type weighing device. Gear-
2. Referenced Documents
driven head separation isrecommended.
2.1 ASTM Standards:
5.1.3 Equip the machine with suitable grips capable of
D 907 Terminology of Adhesives
clamping the specimens firmly throughout the tests.
5.1.4 The machine is autographic, giving a chart that can be
3. Terminology
read in terms of centimetres ( inches) of separation as one
3.1 Definitions—Many of the terms used in this test method
coordinate and applied load as the other coordinate.
are defined in Terminology D 907
5.1.5 The applied tension as measured and recorded is to be
3.2 Definitions of Terms Specific to This Standard:
accurate within 61%.
3.2.1 semirigid adherend, n—an adherend that has dimen-
5.2 Conditioning Room or Desiccators, capable of main-
sions and physical properties that permit bending at designated
taining a relative humidity of 50 6 5 % at 23 6 2°C.
test temperature through any angle up to 30° without breaking
6. Test Specimen
or cracking.
6.1 Laminated test panels (see Fig. 1) consist of two
4. Significance and Use
semirigid adherends properly prepared and bonded together in
4.1 This test method determines strength properties of
accordance with the manufacturer’s recommendations. Spe-
adhesives in cleavage peel by tension loading. It allows the
cially prepared test specimens shall be 25.4 mm (1 in.) wide by
comparative testing of cleavage/peel strengths of bonded
177.3 mm (7 in.) long, but bonded only over approximately 76
engineering thermoplastic adherends.
mm (3 in.) of their length. Test specimens of these same
dimensions may also be cut from larger, fully laminated panels.
6.1.1 Direct comparisons of different adhesives are made
This test method is under the jurisdiction of ASTM Committee D-14 on
only when specimen construction and test conditions are
Adhesives and is the direct responsibility of Subcommittee D14.40 on Adhesives for
Plastics. identical.
Current edition approved May 10, 1998. Published March 1999. Originally
NOTE 2—General purpose ABS (acrylonitrile-butadiene-styrene)
published as D 3807 – 79. Last previous edition D 3807 – 93.
molded plaques approximately 6.3 mm (0.25 in.) thick have been found
Annual Book of ASTM Standards, Vol 15.06.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 3807
FIG. 1 Cleavage Peel Test Specimen
satisfactory as adherends for structural adhesives. Other engineering
manufacturer may specify such an aging period to be unnec-
plastics and metals have been found satisfactory for specific adhesives.
essary or a shorter period to be adequate.
NOTE 3—The adherend substrate selected must exhibit sufficient tough-
ness and stiffness to resist substrate failure, thus forcing the adhesive layer
8. Procedure
to absorb the stresses of the testing process. Should the substrate fail
cohesively, the ultimate cleavage/peel strength of the adhesive under test
8.1 Clamp the connecting wires from the specimen (Fig. 1)
has not been determined.
in the test grips of the tension-testing machine. Apply the load
at a constant crosshead speed of 12.7 mm (0.5 in.)/min.
6.2 Cut
...
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