User manual 3M POLYURETHANE PROTECTIVE BOOTS INSTALLATION TECH BULLETIN

[. . . ] Dimensions Approximate Applied Thickness:* Approximate Weight: 0. 012 inch (0. 30 mm) Film Total thickness 0. 014 inch (0. 36 mm) 0. 09 lb/ft2 (440 g/m2) *There is a gradual decrease in thickness, 0. 009 in (0. 23 mm) minimum overall, at the base of the boot. B. Typical Physical Properties and Performance Characteristics Property Tensile Strength @ Break Elongation % @ Break Taber Abrasion Hardness Dielectric Strength Dielectric Constant Peel Adhesion @ 70°F (21°C) to: Aluminum Glass Epoxy Primer Urethane Paint High Solids Mil Spec Paint High Solids Mil Spec Paint (w/3MTM Promoter #86) Solvent Resistance Motor Oil Distilled Water Hydraulic Fluid** JP-4/JP-5 Aviation Fuel Diesel Fuel Test Method ASTM D882 ASTM D882 H-18, 1000g wt, 1000 cycle ASTM-D2240 ASTM-D1000 @ 5. 6 GHz @12. 8 GHz ASTM D-1000 24 Hr. Dwell Units lb/in (N/100 mm) % Loss in grams Shore A Volts ­ Typical Value 94 (1646) 458 < 0. 10 80 14, 000 3. 018 2. 940 92. 6 (101. 4) 68. 3 (74. 8) 111. 5 (122. 0) 78. 8 (86. 3) 77. 1 (84. 4) 108. 2 (118. 4) oz/in (N/100 mm) 24 hour immersion Little or no apparent effect Little or no apparent effect Little or no apparent effect Slight edge penetration Slight edge penetration **3MTM Polyurethane Protective Boots are not resistant to SkydrolTM hydraulic fluid. Edge sealing with 3MTM Scotch-WeldTM Epoxy Adhesive DP190 can significantly reduce the effect of Skydrol migrating under edges of boot and tape. Technical Bulletin Typical Physical Properties and Performance Characteristics Polyurethane Protective Tape For typical physical and performance characteristics of SJ8641 SJ8681 SJ8667 SJ8672 SJ8663 SJ8545 refer to technical data pages for 3MTM Polyurethane Protective Tape: 8641 8681 8667 8672 8663 8545 Environmental Health and Safety Before handling any chemical products, always read the container label and the MSDS. [. . . ] Note: To document the installation in the aircraft log books, save the boot identifier tag that is on the base of the boot. Step 3: Position the boot over the radome/part (adhesive/white liner side down against radome/part). Measure from the bottom of the boot and the base of the radome/part to ensure it is centered and properly positioned. Step 4: Use 3MTM Vinyl Tape 471 to mark three index points on the radome/part (one on the top and two on the sides approximately 90° apart) clearly establishing the center point, so the boot can be repositioned properly. Then mark three additional index points on the boot opposite of marks currently in place. Step 5: Remove the boot from the radome/part and turn the boot inside out taking care not to wrinkle the boot. Step 6: Spray the radome/part and boot with 3M Application Solution. Using thumb nail, lift edge of liner from the boot to expose a small portion of adhesive. When removing the remainder of the liner, continuously spray 3M Application Solution on the exposed boot. -3- Note: Using the radome/part as a holder for the boot is important when removing the liner. This prevents the boot from sticking to itself - making it unusable. Technical Bulletin Suggested Installation Procedures (continued) Polyurethane Protective Tape Step 7: Remove the 3MTM Polyurethane Protective Boot from the radome/part, turn inside out again. Heavily spray radome/part and boot with 3MTM Protective Tape Application Solution allowing for easy repositioning. The more 3M Application Solution used, the easier the application will be. Step 8: Apply the boot to the radome/part taking care to match the index points at the top and sides of the boot. Reposition and reapply 3M Application Solution as needed until proper fit is achieved. Remove index marks. Step 9: Reapply 3M Application Solution to the outside of the boot. Starting at the center of the radome/part, use 1-2 inch strokes with the yellow squeegee to smooth out the boot - removing the trapped 3M Application Solution and air bubbles. Step 10: Continue using short strokes working your way down to the base. If a bubble is trapped, carefully peel boot back, reapply 3M Application Solution and use yellow squeegee to re-adhere. Use a clean, lintfree, silicone-free cloth to absorb the liquid at the edges of the boot. This helps the edge of the boot to stay attached to the surface of the radome/part. Note: Small bubbles (>1/8 inch) will evaporate by themselves in less than one week. These small bubbles can be removed by using a small 1 cc syringe if necessary; however, this procedure should be kept to an absolute minimum and should not be used in the center, blunt frontal area of the boot. Step 12. Small water bubbles trapped under the Polyurethane Protective Boot may be removed by using a small 1 cc syringe if necessary. This procedure should be kept to an absolute minimum and should not be used in the center, blunt frontal area of the Polyurethane Protective Boot, is is preferable to pull the Polyurethane Protective Boot back and reapply as described in step 10. Step 11: Dry the surface of the boot with a clean cloth. If the boot is installed on an aircraft, allow to dwell one hour at 70°F (21°C) before flight. -4- Technical Bulletin Special Note for Treatment of Diverter Strips on Aircraft Radomes Polyurethane Protective Tape If static diverters are present on the radome, either segmented or solid diverters, you must not cover them with the 3MTM Polyurethane Protective Boot. Apply the Polyurethane Protective Boot as described on pages 3 & 4, carefully trim the material of the Polyurethane Protective Boot from the edge of the diverter strip using a small scissors. [. . . ] In the U. S. , call toll free 1-800-235-2376 or fax 1-800-435-3082 or 651-737-2171. If you are outside of the U. S. , please contact your nearest 3M office or one of the following branches: Australia Austria Brazil Canada 61-2-498-9711 tel 01-86686-298 tel 55 19 3838-7876 tel 800-410-6880 ext. 6018 tel 61-2-498-9710 fax 01-86686-229 fax 55 19 3838-6892 fax 800-263-3489 fax China Denmark France Germany 86-21-62753535 tel 45-43-480100 tel 0810-331-300 tel 02131-14-2344 tel 86-21-62190698 fax 45-43-968596 fax 30-31-6195 fax 02131-14-3647 fax Italy Japan Korea Netherlands 02-7035-2177 tel 03-3709-8245 tel 02-3771-4114 tel 31-71-5-450-272 tel 02-7035-2125 fax 03-3709-8743 fax 02-786-7429 fax 31-71-5-450-280 fax South Africa Spain Switzerland United Kingdom 11-922-9111 tel 34-91-321-6000 tel 01-724-9114 tel (0) 161-237-6174 tel 11-922-2116 fax 34-91-321-6002 fax 01-724-9068 fax (0) 161-237-3371 fax 3M MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. User is responsible for determining whether the 3M product is fit for a particular purpose and suitable for user's method of application. [. . . ]