1、 FORD LABORATORY TEST METHOD BU 112-02 Date Action Revisions 2000 11 13 Revised Editorial no technical change A. Cockman 2000 03 02 Editorial no technical change A. Cockman 1995 05 15 Printed copies are uncontrolled Pag e 1 of 8 Copyright 2000, Ford Global Technologies, Inc. PEEL ADHESION OF PRESSUR
2、E SENSITIVE TAPES Application This method determines the peel adhesion loads of various pressure sensitive two sided adhesive tapes when bonded to various substrates. Materials and Apparatus Required Panel - Foil Anodized alumi num, dimensions defined by each Method. Roller Rubber covered steel as d
3、escribed 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 M
4、I 48126 44 - 47 Shore D +/ - 10 % Isopropyl Alcohol and Water Mixture 50/50 blend of technical grade isopropyl alcohol and dei onized water. Bar Clip - steel, see Figure 5 Tissue Lint free Conditioning and Test Conditions All test values indicated herein are based on material conditioned in a contro
5、lled atmosphere of 23 +/ - 2 C and 50 +/ - 5 % relative humidity for not less t han 24 h prior to testing and tested under the same conditions unless otherwise specified. FORD LABORATORY TEST METHOD BU 112-02 Page 2 of 8 Copyright 2000, Ford Global Technologies, Inc. Procedure Note: Identify which s
6、ide of the tape will be bonded to the part/panel. (Many pressure sensitive tapes have different adhesives on the liner side and n on -liner sides. This allows for adhesion of dissimilar substrates. The liner side is the side which bonds to the paint or second surface. The non - liner side is the sid
7、e which is bonded to the part or first surface.) Method A - 90 degree Peel Adhesion o n 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/p
8、ainted 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 avoi ded w
9、ithout exerting appreciable pressure on the tape. Remove the liner from the tape and position a strip of anodized aluminum (dull side to pressure sensitive adhesive) 19 x 200 x 0.125 mm on the tape. 5. When testing adhesion to the paint (second surf ace), apply a strip of anodized aluminum (dull sid
10、e to pressure sensitive adhesive) 19 x 200 x 0.125 mm to the non -liner side of the tape. Remove the release 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 appreciab
11、le pressure on the tape. 6. Apply pressure to the aluminum by rolling with a 2 kg roller once in each direction at the rate of 50 mm/second. 7. Allow the specim en to age as specified in the applicable engineering document. 8. Test the panels after conditioning as follows (see Figure 1): Clamp the f
12、ixture 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 insert an extended end of the aluminum tape into the crosshead jaw. Initia
13、te jaw separation 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. Method B
14、 - 180 or T - peel A dhesion on Component 1. Cut a specimen of the tape to be tested at least 150 mm long and 13 mm wide. FORD LABORATORY TEST METHOD BU 112-02 Page 3 of 8 Copyright 2000, Ford Global Technologies, Inc. 2. Apply the tape sample to the dull side of an aluminum strip 16 x 300 x 0.125 m
15、m. 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 th
16、e construction sown wi th a 7 kg roller, 1 pass in each direction at a rate of 50 mm/second. 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 Test er jaw, the other in the
17、 lower Tester jaw (see Figure 2). 7. Pull the samples apart at 300 mm/minute jaw separation rate. Record the average peel force in newtons/mm width, ignoring the first and last 25mm. Method C - Breakaway and Continuous Peel on Pa int Preparation of Test Specimens 1. Clean the vinyl test bar (Figure
18、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 afte r primer has dried to ensure the primer is not contaminated. 2. Clean the painted panel with one wash of isopropanol
19、/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 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 c
20、ontact 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 wise 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
21、 16 mm. Remove exposed tape from bar which e xtends 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/second. Procedure 1. Condition test samples as described in the engineering document. 2. Expose to the var
22、ious environments as indicated in the engineering document. 3. Recondition as required. 4. Testing of panels after reconditioning (see Figure 5): (a) Clamp the fixture for holding the panel in the lower jaw of the tensile tester. FORD LABORATORY TEST METHOD BU 112-02 Page 4 of 8 Copyright 2000, Ford
23、 Global Technologies, Inc. (b) Clamp the bar clip in the upper jaw. (c) Initiate jaw separation at a rate of 300 mm/minute. Continue separation until all of the vinyl bar has been removed. 5. Record the breakaway force, which is the maximum force required to initiate separation of the vinyl far fr o
24、m the panel and record the average continuing peel force in newtons/mm width. Method D - T - Block Test 1. Prepare T - section blocks by immersion in MEK for 10 minutes, clean with n - Heptane and wipe dry with a tissue (see Figure 6). 2. Place specimen line r side down on a flat horizontal surface.
25、 3. Superimpose the contact face of one T - block onto exposed 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 dimen
26、sion of the block. 5. Remove the liner from the specimen and superimpose the 2nd block onto the exposed adhesive. Press these 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 seconds. 7. With
27、in 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 separation with a speed of 300 mm/minute and record load at separation in
28、N/mm2. Method E - Pluck Adhesion on Receptor 1. Position a 50 mm long tape spe cimen with liner on a 50 x 25 mm anodized aluminum panel (see 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
29、with a 2 kg roller. 4. Age the specimen assembly as required. 5. Assemble the specimen assembly in a tensile testing machine and pluck the aluminum panel away from the substrate at a rate of 50 mm/minute (see Figure 4). 6. Record the load required in newtons to pluck the panel from th e substrate wi
30、th reference to the tape width. Chemicals, materials, parts, and equipment referenced in this document must be used and handled properly. Each party is responsible for determining proper use and handling in its facilities. FORD LABORATORY TEST METHOD BU 112-02 Page 5 of 8 Copyright 2000, Ford Global
31、 Technologies, Inc. PEEL ADHESION OF PRESSURE SENSITIVE TAPES FIGURE 1 FIGURE 2 FORD LABORATORY TEST METHOD BU 112-02 Page 6 of 8 Copyright 2000, Ford Global Technologies, Inc. PEEL ADHESION OF PRESSURE SENSITIVE TAPES FIGURE 3 FIGURE 4 FORD LABORATORY TEST METHOD BU 112-02 Page 7 of 8 Copyright 2000, Ford Global Technologies, Inc. PEEL ADHESION OF PRESSURE SENSITIVE TAPES FIGURE 5 FIGURE 6 FORD LABORATORY TEST METHOD BU 112-02 Page 8 of 8 Copyright 2000, Ford Global Technologies, Inc. PEEL ADHESION OF PRESSURE SENSITIVE TAPES FIGURE 7
