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3.5Open Time—The time between adhesive application and asmbly (closing) of the bond.
3.6Peel-Strength Average—The peel-strength average is considered to be the midline of the peel-load variations
as displayed on the universal testing machine.
4.Equipment Required
4.1Universal Testing Machine—Must meet the requirements of ASTM D 1002 (cross head speed of 50 to
500mm/min (2 to 20 in/min), range 0 to 9.07 kg (0 to 20 lb)).
4.2Fixture—Constant 90 degree angle frictionless peel fixture.
4.3Roller—Able to apply a load of 0.357 kg/cm (2 lb/in) width.
4.4Specimen Cutter—Two single-edged razor blades held in parallel planes, 2
5.4 mm (1.0 in) apart.
4.5Timer—0 to 60 min.
4.6Spray Guns
4.6.1A TOMIZING—Manufacturer's recommendations—with assorted nozzles, air caps, needles, and pressurizing
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4.6.2A IRLESS—Manufacturer's recommendations—with assorted nozzles, air caps, needles, and pressurizing
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pots.
5.Method A—90 degree Peel
5.1Sample Preparation—90 degree Peel
5.1.1Select one 100 x 300 mm (4 x 12 in) mi-rigid/rigid substrate panel for each test condition masking a
25x100 mm (1 x 4 in) strip along a 100 mm (4 in) panel edge.
NOTE—25 panel/strip 90 degree peel-test asmblies are required for each adhesive open time, warp, fill, and adhesive wet-film thickness condition being evaluated. In instances where only one
substrate is coated with the adhesive, mask only that substrate.
5.1.2Cut the flexible material into one 25 x 300 mm (1 x 12 in) test strip for each mi-rigid/rigid substrate panel.
NOTE—When cutting fabrics with a defined weave, cut one t parallel to the warp and one t parallel to the fill. Both ts shall be tested.
5.1.3Apply the test adhesive for approximately 200 mm (8 in) from one end of the flexible test material strips.
NOTE—For spray-applied adhesives, mask 100 mm (4 in) from one end of the substrate aligning the test strips side by side with their intended bonded surfaces facing up. Adhesive wet-film
thickness shall be per manufacturer's recommendations.
5.1.4Immediately start the open-time timer after applying the adhesive. Carefully remove the masking material
from the flexible test strip(s) before applying each strip to the center of a panel.
5.1.5At the appropriate open time(s), apply a flexible test material strip to the center of a mi-rigid/rigid panel
aligning the strip with the panels 300 mm (12 in) edges and assuring that the unbonded portion of the flexible strip is on the 100 mm (4 in) masked edge with the bonded portion of the flexible strip starting 25 mm (1 in) from the panel's edge. Immediately pressurize the full-bond area rolling it four times (two times forward and two back) using the 0.91 kg (2 lb) roller.
NOTE—Every effort to eliminate the effects of adhesive squeeze-out on the peel sample should be made.
5.1.6Repeat the same procedure for the balance of conditions or until all samples are asmbled. Remove any
masking from the mi-rigid/rigid panels.
5.1.7On the back of each panel describe the adhesive open time, warp and fill direction, adhesive film thickness,
and number the test asmbly.
5.1.8Condition the panel/strip test asmblies for 24 h at 24 °C ± 2 °C (75 °F ± 3 °F) (or manufacturer's
recommendations).
5.2Peel Procedure—90 degrees
5.2.1Mount the 90-degree peel fixture in the universal tester.
5.2.2Install a test asmbly in the 90-degree peel fixture aligning the flexible test strip with the universal testers
jaw to assure a 90-degree orientation before curing the asmbly in the peel fixture and the flexible strip in the jaw.基础护肤
NOTE—After curing the test asmbly, assure the peel fixture continues to move freely.
5.2.3Activate the universal-testing machine to peel the strip from the panel at arate of 304.8 mm/min (12 in/min)
for a minimum of 152 mm (6 in).
NOTE—Pay particular attention that the 90-degree peel fixture continues to move easily maintaining a perpendicular alignment during the peel process. If alignment along this axis exceeds
±10degrees, that portion of the test-strip sample should be disregarded.
5.2.4Record the breakaway and average peel value for each test asmbly.
5.3Report Requirements—90-degree Peel
5.3.1Report the test method number and any deviations from the recommended test method.
5.3.2Report complete identification of samples (open time, warp or fill, adhesive wet-film thickness), adhesive
type, as well as conditioning time, temperature, and humidity prior to aging and testing.
5.3.3Report the average of the breakaway and average peel values for the samples (in kilograms per centimeter
[kg/cm] width or ounces per inch [oz/in] width).
5.3.4Report any inconsistencies or irregularities (substrate elongation, deformation, etc.) noted during the test.
6.Method B—180-degree Peel
6.1Sample Preparation—180-degree Peel
6.1.1Select one 100 x 300 mm (4 x 12 in) mi-rigid/rigid substrate panel for each test asmbly masking a
桥字组词25x100 mm (1 x 4 in) strip along a 100 mm (4 in) panel edge.
NOTE—25 panel/strip 180-degree peel test asmblies are required for each adhesive open time, w
arp, fill, and adhesive wet-film thickness condition being evaluated. In instances where only one substrate is
coated with the adhesive, mask only that substrate.
6.1.2Cut the flexible test material into one 25 x 500 mm (1 x 20 in) test strip for each mi-rigid/rigid substrate
panel.
NOTE—When cutting fabrics with a defined weave, cut one t parallel to the warp and one t parallel to the fill. Both ts shall be tested.
6.1.3Apply the test adhesive for approximately 200 mm (8 in) from one end of the flexible test material strips.
NOTE—For spray-applied adhesives, mask 300 mm (12 in) from one end of the flexible substrate aligning the test strips side by side with their intended bonded surfaces facing up. Adhesive
wet-film thickness shall be per manufacturer's recommendations.
6.1.4Immediately start the open-time timer after applying the adhesive. Carefully remove the masking material
from the flexible test strip(s) before applying each strip to the center of a panel.
6.1.5At the appropriate open time(s), apply a flexible test material strip to the center of a mi-rigid/rigid panel
aligning the strip with the panel's 300 mm (12 in) edges and assuring that the unbonded portion of the flexible strip is on the 10 cm (4 in) masked edge with the bonded portion of the flexible strip starting 2.5 cm (1in) from the panel's edge.
6.1.6Immediately upon application, roll the entire bonded area of the flexible strip four times (two times
forward and two back) using the two-pound roller.
NOTE—Every effort to eliminate the effects of adhesive squeeze-out on the peel sample should be made.
6.1.7Repeat the same procedure for the balance of conditions or until all samples are asmbled.
6.1.8Condition the panel/strip test asmblies for 24 h at 24 °C ± 2 °C (75 °F ± 3 °F) (or manufacturer's
recommendations).
6.2Peel Procedure—180 degrees
6.2.1Inrt the 100 mm (4 in) adhesive free edge of the mi-rigid/rigid panel into one of the universal tester jaws.
Double back the loo 300 mm (12 in) of unbonded flexible strip aligning it between the universal testing machine jaws. Secure both the panel and the aligned flexible strip in the jaws.
6.2.2Activate the universal tester to peel the flexible strip completely from the panel at a rate of 304 mm/min
(12in/min)
凤翔社区6.2.3Peel for a minimum of 152 mm (6 in) recording the breakaway value and average peel value for each test
asmbly.
6.3Report Requirements—180 degrees
6.3.1Report the test method number and any deviations from the recommended test method.
6.3.2Report complete identification of samples (open time, warp or fill, adhesive wet-film thickness), adhesive, as
well as conditioning time, temperature, and humidity prior to aging and testing.
6.3.3Report average breakaway, and average remaining peel run values of the samples (in kilograms per
centimeter [kg/cm] width or ounces per inch [oz/in] width).
6.3.4Report any inconsistencies or irregularities (substrate elongation, deformation, etc.) noted during the test.
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