PEEL ADHESION OF PRESSURE SENSITIVE TAPES
Application
This method determines the peel adhesion loads of various pressure nsitive two sided adhesive tapes when bonded to various substrates.容易发胖的食物
Materials and Apparatus Required
Panel - Foil
Anodized aluminum, dimensions defined by each Method.
Roller
快速减掉小肚腩Rubber covered steel as described in ASTM D 1000. (Roller must be capable of having weights added to it).
Test Specimen
Dimensions defined by each Method.
Tensile Test Machine
Scale range 0 - 50 kg
Vinyl Test Bar
Source: Standard Products Co. Material: PVC Test Bars
2401 South Gulley Road EX3786 HMS-4632-F901
Dearborn MI 48126 44 - 47 Shore D
+/- 10 %
Isopropyl Alcohol and Water Mixture
50/50 blend of technical grade isopropyl alcohol and deionized water.
Bar Clip - steel, e Figure 5
Tissue
Lint free
Conditioning and Test Conditions
All test values indicated herein are bad on material conditioned in a controlled atmosphere of 23 +/- 2 °C and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwi specified.
Date Action Revisions
2000 11 13 Revid Editorial – no technical change A. Cockman 2000 03 02 Editorial – no technical change A. Cockman 1995 05 15
Procedure
Note: Identify which side of the tape will be bonded to the part/panel. (Many pressure nsitive tapes have different adhesives on the liner side and non-liner sides. This allows for adhesion of
dissimilar substrates. The liner side is the side which bonds to the paint or cond surface. The
non-liner side is the side which is bonded to the part or first surface.)
Method A - 90 degree Peel Adhesion on Component or painted test panel
1. Clean the original part/painted panel with one wash using the isopropyl/ water solution and wipe dry with
a tissue.
2. Cover 12 - 19 mm of one of the ends of the original part/painted panel with masking tape.
3. Cut a specimen of the tape to be tested at least 150 mm long and 13 mm wide.
4. When testing adhesion to the part (first surface), apply the tape to be tested to the part/panel in such a
way that the formation of air bubbles between tape and substrate is avoided without exerting appreciable pressure on the tape. Remove the liner from the tape and position a strip of anodized aluminum (dull side to pressure nsitive adhesive) 19 x 200 x 0.125 mm on the tape.
5. When testing adhesion to the paint (cond surface), apply a strip of anodized aluminum (dull side to
pressure nsitive adhesive) 19 x 200 x 0.125 mm to the non-liner side of the tape. Remove the relea liner from the liner side and apply the aluminum/tape sample to the part/panel in such a way that the formation of air bubbles between tape and substrate is avoided without exerting appreciable pressure on the tape.
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6. Apply pressure to the aluminum by rolling with a 2 kg roller once in each direction at the rate of 50
mm/cond.
7. Allow the specimen to age as specified in the applicable engineering document.
8. Test the panels after conditioning as follows (e Figure 1):
Clamp the fixture for holding the part or panel in the stationary jaw of the tensile tester. The fixture shall be capable of maintaining a 90 degree angle of peel throughout the test.
Place a test part/panel into the holding fixture and inrt an extended end of the aluminum tape into the crosshead jaw.
Initiate jaw paration at a rate of 300 mm per minute. Continue the test until all of the tape has been removed from the part.
9. Record the average peel force in newtons, ignoring the first and last 25 mm of peel.
10. Repeat steps 1 through 9 for four additional samples and average the results.
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Method B - 180 ° or T-peel Adhesion on Component
1. Cut a specimen of the tape to be tested at least 150 mm long and 13 mm wide.
2. Apply the tape sample to the dull side of an aluminum strip 16 x 300 x 0.125 mm. Leave a 25 mm tab
at each end of the aluminum strip. No cleaning of the strip is necessary.
3. Remove the liner from the tape sample. Apply another aluminum strip, dull side to the foam, to the
sample. The final construction consists of the foam tape sample between two aluminum strips.
4. Roll the construction sown with a 7 kg roller, 1 pass in each direction at a rate of 50 mm/cond.
5. Condition the samples for 1 - 2 hours at 23 +/- 2 °C and 50 +/- 5 % R.H.
6. Bend the top and bottom aluminum strips at a 90 ° angle from the foam. Clamp one strip in the upper
Tester jaw, the other in the lower Tester jaw (e Figure 2).
7. Pull the samples apart at 300 mm/minute jaw paration rate. Record the average peel force in
newtons/mm width, ignoring the first and last 25mm.
Method C - Breakaway and Continuous Peel on Paint
Preparation of Test Specimens
1. Clean the vinyl test bar (Figure 3) thoroughly on the side to be bonded using isopropanol/water. If
primer has been applied to the test bar for improved adhesion to the molding, apply tape specimen within 1 hour after primer has dried to ensure the primer is not contaminated.
2. Clean the painted panel with one wash of isopropanol/water. Wipe dry with tissue.
3. Cut a specimen of tape to be tested 12.7 mm wide by at least 200 mm in length. Align the test
黄山奇石的资料specimen squarely over the test bar, non-liner side to the vinyl bar, allowing an overlap of the tape on each end. Press specimen firmly onto the test bar to ensure good contact and roll once using a 7 kg roller. Trim the excess tape from one end of the bar.
4. Remove liner from the tape on the test bar. Centrally locate the bar length wi over the test part/panel
as shown in Figure 4. Allow the end of the bar with the excess tape to overhang one end of the panel by 16 mm. Remove expod tape from bar which extends beyond painted panel.
5. Roll the test bar on the panel once forward and once backward, using the mechanical 7 kg roller at the
rate of 50 mm/cond.
Procedure
1. Condition test samples as described in the engineering document.
2. Expo to the various environments as indicated in the engineering document.
3. Recondition as required.
4. Testing of panels after reconditioning (e Figure 5):
(a) Clamp the fixture for holding the panel in the lower jaw of the tensile tester.
(b) Clamp the bar clip in the upper jaw.
(c) Initiate jaw paration at a rate of 300 mm/minute. Continue paration until all of the vinyl bar
has been removed.
5. Record the breakaway force, which is the maximum force required to initiate paration of the vinyl far
from the panel and record the average continuing peel force in newtons/mm width.
Method D - T-Block Test
1. Prepare T-ction blocks by immersion in MEK for 10 minutes, clean with n-Heptane and wipe dry with
a tissue (e Figure 6).
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2. Place specimen liner side down on a flat horizontal surface.
3. Superimpo the contact face of one T-block onto expod adhesive surface of the specimen. Rub
surface of liner with thumb pressure to ensure good bond of adhesive to T-block.
4. Using a razor or safety knife, cut around the block so as to make the liner side of the specimen the
exact dimension of the block.
5. Remove the liner from the specimen and superimpo the 2nd block onto the expod adhesive. Press
the together with only enough force to adhere the blocks together.
6. Place the mated T-blocks into the fixture (Figure 6) and apply a 11 kg static load for 15 conds.
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7. Within 1 - 2 minutes, place 2 hangers in position of the blocks and hang one in the upper jaw of the
tensile tester. Align hanger so that a hanger at the lower jaw will fall into place. Clamp lower hanger (Figure 6).
8. Start Jaw paration with a speed of 300 mm/minute and record load at paration in N/mm2.
Method E - Pluck Adhesion on Receptor
1. Position a 50 mm long tape specimen with liner on a 50 x 25 mm anodized aluminum panel (e Figure
7).
2. Apply uniform pressure to the tape specimen using a 2 kg roller.
3. Remove the liner and bond the tape to a rigid substrate. Roll the tape twice with a 2 kg roller.
4. Age the specimen asmbly as required.
5. Asmble the specimen asmbly in a tensile testing machine and pluck the aluminum panel away from
the substrate at a rate of 50 mm/minute (e Figure 4).
6. Record the load required in newtons to pluck the panel from the substrate with reference to the tape
width.
Chemicals, materials, parts, and equipment referenced in this document must be ud and handled properly. Each party is responsible for determining proper u and handling in its facilities.
PEEL ADHESION OF PRESSURE SENSITIVE TAPES
FIGURE 1
FIGURE 2
PEEL ADHESION OF PRESSURE SENSITIVE TAPES
FIGURE 3
越战是哪一年FIGURE 4
