12X12-6-4941

VHB™ Tapes Technical Data October 2014 Product Description: 3M™ VHB™ Tapes provide the convenience and simplicity of a tape fastener and are ideal for use in many interior and exterior bonding applications. In many situations, they can replace rivets, spot welds, liquid adhesives and other permanent fasteners. These 3M™ VHB™ Tapes are made with acrylic foam which is viscoelastic in nature. This gives the foam energy absorbing and stress relaxing properties which provides these tapes with their unique characteristics. The acrylic chemistry provides outstanding durability performance. These tapes utilize a variety of specific foam, adhesive, color and release liner types to provide each product/family with specific features. These features can include adhesion to specific or a broad range of materials, conformability, high tensile strength, high shear and peel adhesion, resistance to plasticizer migration, and UL746C recognition. All 3M™ VHB™ Tapes have excellent durability and excellent solvent and moisture resistance. The tapes included in this data page represent products most commonly used by customers. Please refer to “3M™ VHB™ Tape Specialty Tapes” technical data sheet for additional 3M™ VHB™ Tapes that may be required in special circumstances. 3M™ VHB™ Tape Products 4941 Family This family utilizes multi-purpose acrylic adhesive on both sides of a conformable adhesive foam core. The adhesive provides excellent adhesion to a broad range of high and medium surface energy substrates including metals, glass, and a wide variety of plastics, as well as plasticized vinyl. The conformable adhesive foam core provides good contact, even with mismatched substrates. The combination of foam strength, conformability, and adhesion makes this family one of the most capable all-around 3M™ VHB™ tapes. Tape Number Color Thickness in (mm) 4919F 4926 4936(F) 4941(F) 4947F 4956(F) 4979F 4991 4991B Black Gray Gray Gray Black Gray Black Gray Black 0.025 (0.6) 0.015 (0.4) 0.025 (0.6) 0.045 (1.1) 0.045 (1.1) 0.062 (1.6) 0.062 (1.6) 0.090 (2.3) 0.090 (2.3) Tape Number Color Thickness in (mm) 5906 5907 5908 5909 5915(P) 5915WF 5925(P) 5925WF 5930(P) 5930WF 5952(P) 5952WF 5958FR 5962(P) 5962WF Black Black Black Black Black White Black White Black White Black White Black Black 0.006 (0.15) 0.008 (0.20) 0.010 (0.25) 0.012 (0.30) 0.016 (0.4) 0.016 (0.4) 0.025 (0.6) 0.025 (0.6) 0.032 (0.8) 0.032 (0.8) 0.045 (1.1) 0.045 (1.1) 0.040 (1.0) 0.062 (1.6) 0.062 (1.6) Tape Number RP16(F) RP25(F) RP32(F) RP45(F) RP62(F) Color Gray Gray Gray Gray Gray Thickness in (mm) 0.016 (0.4) 0.025 (0.6) 0.032 (0.8) 0.045 (1.1) 0.062 (1.6) 5952 Family This family utilizes modified acrylic adhesive on both sides of a very conformable adhesive foam core, providing adhesion the broadest range of substrates, including most powder coated paints. RP Family This family utilizes multi-purpose acrylic adhesive on both sides of a conformable adhesive foam core. The adhesive provides good adhesion to a broad range of high and medium surface energy substrates including metals, glass, and a wide variety of plastics. The conformable adhesive foam core provides good contact, even with mismatched substrates (P) or (F) after the product number designates that both a paper and film liner product version are available. [e.g. 4941 (paper liner) and 4941F (film liner), 5915 (film liner) and 5915P (paper liner). See page 2 for specific details. -1- 3M™ VHB™ Tapes Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Typical Physical Properties 3M™ VHB™ Tapes RP 5952 4941 Family Adhesive and Foam Release Liner Density lb/ft3 (kg/m3) Number Color Tape Thickness Inches (mm) Tolerance 4919F Black 0.025 (0.6) ± 15% Multi-Purp Conform 45 (720) PE Film 0.005 (0.13) Red (printed) 4926 Gray 0.015 (0.4) ± 15% Multi-Purp Conform 45 (720) Dk Paper 0.003 (0.08) White (printed) 4936 Gray 0.025 (0.6) ± 15% Multi-Purp Conform 45 (720) Dk Paper 0.003 (0.08) White (printed) 4936F Gray 0.025 (0.6) ± 15% Multi-Purp Conform 45 (720) PE Film 0.005 (0.13) Red (printed) 4941 Gray 0.045 (1.1) ± 10% Multi-Purp Conform 45 (720) Dk Paper 0.003 (0.08) White (printed) 4941F Gray 0.045 (1.1) ± 10% Multi-Purp Conform 45 (720) PE Film 0.005 (0.13) Red 4947F Black 0.045 (1.1) ± 10% Multi-Purp Conform 45 (720) PE Film 0.005 (0.13) Red (printed) 4956 Gray 0.062 (1.6) ± 10% Multi-Purp Conform 45 (720) Dk Paper 0.003 (0.08) White (printed) 4956F Gray 0.062 (1.6) ± 10% Multi-Purp Conform 45 (720) PE Film 0.005 (0.13) Red (printed) 4979F Black 0.062 (1.6) ± 10% Multi-Purp Conform 45 (720) PE Film 0.005 (0.13) Red (printed) 4991 Gray 0.090 (2.3) ± 10% Multi-Purp Conform 45 (720) PE Film 0.005 (0.13) Red (printed) 4991B Black 0.090 (2.3) ± 10% Multi-Purp Conform 45 (720) PE Film 0.005 (0.13) Red (printed) 5906 Black 0.006 (0.15) ± 15% Modified Very Conf 45 (720) PET 0.003 (0.08) Clear 5907 Black 0.008 (0.20) ± 15% Modified Very Conf 45 (720) PET 0.003 (0.08) Clear 5908 Black 0.010 (0.25) ± 15% Modified Very Conf 45 (720) PET 0.003 (0.08) Clear 5909 Black 0.012 (0.30) ± 15% Modified Very Conf 45 (720) PET 0.003 (0.08) Clear 5915 Black 0.016 (0.4) ± 15% Modified Very Conf 43 (690) PE Film 0.005 (0.13) Red (printed) 5915P Black 0.016 (0.4) ± 15% Modified Very Conf 43 (690) PCK Paper 0.004 (0.10) White (printed) 5915WF White 0.016 (0.4) ± 15% Modified Very Conf 43 (690) PE Film 0.005 (0.13) Red (printed) 5925 Black 0.025 (0.6) ± 15% Modified Very Conf 37 (590) PE Film 0.005 (0.13) Red (printed) 5925P Black 0.025 (0.6) ± 15% Modified Very Conf 37 (590) PCK Paper 0.004 (0.10) White (printed) 5925WF White 0.025 (0.6) ± 15% Modified Very Conf 37 (590) PE Film 0.005 (0.13) Red (printed) 5930 Black 0.032 (0.8) ± 15% Modified Very Conf 37 (590) PE Film 0.005 (0.13) Red (printed) 5930P Black 0.032 (0.8) ± 15% Modified Very Conf 37 (590) PCK Paper 0.004 (0.10) White (printed) 5930WF White 0.032 (0.8) ± 15% Modified Very Conf 37 (590) PE Film 0.005 (0.13) Red (printed) 5952 Black 0.045 (1.1) ± 10% Modified Very Conf 37 (590) PE Film 0.005 (0.13) Red (printed) 5952P Black 0.045 (1.1) ± 10% Modified Very Conf 37 (590) PCK Paper 0.004 (0.10) White (printed) 5952WF White 0.045 (1.1) ± 10% Modified Very Conf 37 (590) PCK Paper 0.004 (0.10) White (printed) 5958FR Black 0.040 (1.0) ± 10% Modified Very Conf 50 (800) PE Film 0.005 (0.13) Red (printed) 5962 Black 0.062 (1.6) ± 10% Modified Very Conf 37 (590) PE Film 0.005 (0.13) Red (printed) 5962P Black 0.062 (1.6) ± 10% Modified Very Conf 37 (590) PCK Paper 0.004 (0.10) White (printed) 5962WF 0.062 (1.6) ± 10% Modified Very Conf 37 (590) PE Film 0.005 (0.13) Red (printed) RP16 Gray 0.016 (0.4) ± 15% Multi-Purp Conform 45 (720) Dk Paper 0.003 (0.08) White (printed) RP16F Gray 0.016 (0.4) ± 15% Multi-Purp Conform 45 (720) PE Film 0.005 (0.13) Red (printed) RP25 Gray 0.025 (0.6) ± 15% Multi-Purp Conform 45 (720) Dk Paper 0.003 (0.08) White (printed) RP25F Gray 0.025 (0.6) ± 15% Multi-Purp Conform 45 (720) PE Film 0.005 (0.13) Red (printed) RP32 Gray 0.032 (0.8) ± 15% Multi-Purp Conform 45 (720) Dk Paper 0.003 (0.08) White (printed) RP32F Gray 0.032 (0.8) ± 15% Multi-Purp Conform 45 (720) PE Film 0.005 (0.13) Red (printed) RP45 Gray 0.045 (1.1) ± 10% Multi-Purp Conform 45 (720) Dk Paper 0.003 (0.08) White (printed) RP45F Gray 0.045 (1.1) ± 10% Multi-Purp Conform 45 (720) PE Film 0.005 (0.13) Red (printed) RP62 Gray 0.062 (1.6) ± 10% Multi-Purp Conform 45 (720) Dk Paper 0.003 (0.08) White (printed) RP62F Gray 0.062 (1.6) ± 10% Multi-Purp Conform 45 (720) PE Film 0.005 (0.13) Red (printed) Adhesive Type Foam Type -2- Type Thickness Inches (mm) Color 3M™ VHB™ Tapes Available Sizes Maximum Roll Length Width 1/4"up to 3/8" (6.4mm up to 9.5mm) Width >3/8" up to 1/2" (>9.5mm up to 12.7mm) Width 1/2" and wider (12.7mm and wider) yards (meters) yards (meters) yards (meters) N/A N/A N/A N/A See Note Below 144 (131.7) 175 (160.0) 360 (329.2) 72 (65.8) 108 (98.8) 175 (160.0) 48 (1219) 72 (65.8) 108 (98.8) 175 (160.0) 48 (1219) 72 (65.8) 108 (98.8) 144 (131.7) 48 (1219) 72 (65.8) 108 (98.8) 144 (131.7) 46 (1168) 72 (65.8) 72 (65.8) 108 (98.8) 36 (32.9) 36 (32.9) 72 (65.8) Tape Thickness Standard Length Minimum Width Maximum Width inches (mm) yards (meters) inches (mm) inches (mm) < 0.015 (0.4) 72 (65.8) 0.5 (13) 46 (1168) 0.015/0.016 (0.4) 72 (65.8) 0.25 (6) 48* (1219) 0.025 (0.6) 72 (65.8) 0.25 (6) 48* (1219) 0.032 (0.8) 72 (65.8) 0.25 (6) 0.040 (1.0) 36 (32.9) 0.25 (6) 0.045 (1.1) 36 (32.9) 0.25 (6) 0.062 (1.6) 36 (32.9) 0.25 (6) 0.090 (2.3) 36 (32.9) 0.25 (6) 46 (1168) *Exception – 5915 (P) max. width 46 inches (1168 mm); 5925 (P) max. width 47 inches (1194 mm). Note: 5 952 family tapes thinner than 0.015 in (0.4 mm) have max. length 360 yd (329.2 m) for widths 1 in (25 mm) to 8 in (203 mm) and 180 yd (164.6 m) for all other widths. Slitting Tolerance Standard slitting tolerance ± 1/32 inch (± 0.031 inch, ± 0.79 mm). Precision slitting with slitting tolerance of ± 1/64 inch (± 0.016 in., ± 0.41 mm) is available on select products with minimum order of full web increments. Core Size All products are provided on a 3 inch ID Core (76.2 mm) Converted Parts In addition to standard and custom roll sizes available from 3M through the distribution network, 3M™ VHB™ Tapes are also available in limitless shapes and sizes through the 3M Converter network. For additional information, contact 3M Converter Markets at 1-800-223-7427 or on the web at www.3M.com/converter. Shelf Life All 3M™ VHB™ Tapes have a shelf life of 24 months from date of shipment when stored at 40°F to 100°F (4°C to 38°C) and 0-95% relative humidity. The optimum storage conditions are 72°F (22°C) and 50% relative humidity. Performance of tapes is not projected to change even after shelf life expires; however, 3M does suggest that 3M™ VHB™ Tapes are used prior to the shelf life date whenever possible. The manufacturing date is available on all 3M™ VHB™ Tape cores as the lot number. The lot number, typically a 4 digit code, is a Julian date (Y D D D). The first digit refers to the year of manufacture, the last 3 digits refer to the days after January 1. Example: A lot number of 9266 would translate to a date of manufacture of Sept. 22 (266th day of year) in 2009. On most products this is found as the 4 digits after the “9” following the product number. For tapes printed continuously around the core (e.g. 3M™ VHB™ Tape 5952 family) the lot number typically will be the string of 4 digits preceding the product number. Special Cases: Plasticized Vinyl – Plasticizers compounded in soft vinyl can migrate into adhesives and significantly change their performance characteristics. 3M™ VHB™ Tapes 4941 family has very good plasticizer resistance and adhesion to many vinyl formulations. Because of the wide variation in vinyl formulations, however, evaluation by the user must be conducted with the specific vinyl used to ensure that performance will be satisfactory over time. Problems related to plasticizer migration can often be predicted by accelerated aging of assembled parts at 150°F (66°C) for one week). -3- 3M™ VHB™ Tapes Typical Performance Characteristics Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. 3M™ VHB™ Tapes Product Number Color Dynamic Adhesion Performance Thickness Inches 90° Peel Adhesion lb/in N/cm Normal Tensile lb/in2 kPa Dynamic Overlap Shear lb/in2 kPa 4919F Black 0.025 17 (30) 90 (620) 80 (550) 4926 Gray 0.015 14 (25) 95 (660) 90 (620) 4936(F) Gray 0.025 17 (30) 90 (620) 80 (550) 4941(F) Gray 0.045 22 (39) 85 (590) 70 (480) 4947F Black 0.045 22 (39) 85 (590) 70 (480) 4956(F) Gray 0.062 22 (39) 80 (550) 70 (480) 4979F Black 0.062 22 (39) 80 (550) 70 (480) 4991 Gray 0.090 22 (39) 70 (480) 65 (450) 4991B Black 0.090 22 (39) 70 (480) 65 (450) 5906 Black 0.006 9 (16) 100 (690) 100 (690) 5907 Black 0.008 10 (18) 100 (690) 100 (690) 5908 Black 0.010 12 (21) 100 (690) 100 (690) 5909 Black 0.012 12 (21) 100 (690) 100 (690) 5915(P) Black 0.016 14 (25) 90 (620) 90 (620) 5915WF White 0.016 14 (25) 90 (620) 90 (620) 5925(P) Black 0.025 17 (30) 90 (620) 90 (620) 5925WF White 0.025 17 (30) 90 (620) 90 (620) 5930(P) White 0.032 19 (33) 90 (620) 85 (590) 5930WF Black 0.032 19 (33) 90 (620) 85 (590) 5952(P) Black 0.045 22 (39) 90 (620) 80 (550) 5952WF White 0.045 22 (39) 90 (620) 80 (550) 5958FR Black 0.040 20 (35) 100 (690) 100 (690) 5962(P) Black 0.062 22 (39) 90 (620) 80 (550) 5962WF White 0.062 22 (39) 90 (620) 80 (550) RP16(F) Gray 0.016 12 (21) 95 (660) 90 (620) RP25(F) Gray 0.025 17 (30) 90 (620) 80 (550) RP32(F) Gray 0.032 18 (32) 85 (590) 75 (520) RP45(F) Gray 0.045 20 (35) 85 (590) 70 (480) RP62(F) Gray 0.062 20 (35) 80 (550) 70 (480) RP 5952 4941 Family 90° Peel Adhesion - Based on ASTM D3330 -To stainless steel, room temperature, jaw speed 12 in/min (304.8 mm/min). Average force to remove is measured. XXXXX 72 hour dwell. XXXXX Normal Tensile (T-Block Tensile) - ASTM D-897 - To aluminum, room temperature, 1 in2 (6.45 cm2), jaw speed 2 in/min (50.8 mm/min) Peak force to separate is measured. 72 hour dwell. Dynamic Overlap Shear - ASTM D-1002 - To stainless steel, room temperature, 1 in2 (6.45 cm2), jaw speed 0.5 in/min (12.7 mm/min) Peak force to separate is XXXXX measured. 72 hour dwell. -4- 3M™ VHB™ Tapes Typical Performance Characteristics Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Static Shear 3M™ VHB™ Tapes Product Number Color Thickness Inches 72°F (22°C) 150°F (66°C) 200°F (93°C) 250°F (121°C) Short Term Long Term (Minutes, Hours) (Days, Weeks) °F (°C) °F (°C) 4919F Black 0.025 1000 500 500 300 (149) 200 (93) 4926 Gray 0.015 1000 500 500 300 (149) 200 (93) 4936(F) Gray 0.025 1000 500 500 300 (149) 200 (93) 4941(F) Gray 0.045 1000 500 500 300 (149) 200 (93) 4947F Black 0.045 1000 500 500 300 (149) 200 (93 4956(F) Gray 0.062 1000 500 500 300 (149) 200 (93) 4979F Black 0.062 1000 500 500 300 (149) 200 (93) 4991 Gray 0.090 1000 500 500 250 (121) 200 (93) 4991B Black 0.090 1000 500 500 250 (121) 200 (93) 5906 Black 0.006 1000 500 500 250 300 (149) 250 (121) 5907 Black 0.008 1000 500 500 250 300 (149) 250 (121) 5908 Black 0.010 1000 500 500 250 300 (149) 250 (121) 5909 Black 0.012 1000 500 500 250 300 (149) 250 (121) 5915(P) Black 0.016 1000 500 500 250 300 (149) 250 (121) 5915WF White 0.016 1000 500 500 250 300 (149) 250 (121) 5925(P) Black 0.025 1000 500 500 250 300 (149) 250 (121) 5925WF Black 0.032 1000 500 500 250 300 (149) 250 (121) 5930(P) Black 0.032 1000 500 500 250 300 (149) 250 (121) 5930WF White 0.032 1000 500 500 250 300 (149) 250 (121) 5952(P) Black 0.045 1000 500 500 250 300 (149) 250 (121) 5952WF White 0.045 1000 500 500 250 300 (149) 250 (121) 5958FR Black 0.040 1000 350 250 300 (149) 200 (93) 5962(P) Black 0.062 1000 500 500 250 300 (149) 250 (121) 5962WF White 0.062 1000 500 500 250 300 (149) 250 (121) RP16(F) Gray 0.016 1000 500 500 250 (121) 200 (93) RP25(F) Gray 0.025 1000 500 500 250 (121) 200 (93) RP 5952 4941 Family Temperature Tolerance RP32(F) Gray 0.032 1000 500 500 250 (121) 200 (93) RP45(F) Gray 0.045 1000 500 500 250 (121) 200 (93) RP62(F) Gray 0.062 1000 500 500 250 (121) 200 (93) Static Shear - ASTM D3654 - To stainless steel, tested at various temperatures and gram loadings. 0.5 in2 (3.23 cm2). Will hold listed weight for 10,000 minutes (approximately 7 days). Conversion: 1500 g/0.5 in2 equals 6.6 lb/in2; 500 g/0.5 in2 = 2.2 lb/in2. Short Term Temperature Tolerance - No change in room temperature dynamic shear properties following 4 hours conditioning at indicated temperature with 100 g/static load. (Represents minutes, hours in a process type temperature exposure). Long Term Temperature Tolerance - Maximum temperature where tape supports at least 250 g load per 0.5 in2 in static shear for 10,000 minutes. (Represents continuous exposure for days or weeks). -5- 3M™ VHB™ Tapes Additional Typical Performance Characteristics Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. 3M™ VHB™ Tape 4941 5952 Units Test Standard Dielectric Constant 2.29 1.99 2.14 1.95 at 1 kHz at 1MHz ASTM D150 ASTM D150 Dissipation Factor 0.0245 0.0374 0.0065 0.0506 at 1 kHz at 1MHz ASTM D150 ASTM D150 Dielectric Breakdown Strength 14 (360) 18 (455) V/µm (V/mil) Thermal Conductivity (k value) 0.08 (0.5) 0.05 (0.4) W/mK (BTU•in/hr•ft •°F) Volume Resisitivity 2.1 x 1014 2.5 x 1014 Ω-cm ASTM D257 Ω/sq ASTM D257 g/m •day ASTM F1249 at 38°C/100% RH Surface Resisitivity 2.7 x 10 Water Vapor Transmission Rate >10 14 25.6 ASTM D140 2 16 37.1 2 Thermal Properties of Modeling Thermal Coefficient of Expansion Shear Modulus (at 25°C, 1 Hz) 180 (100) 3 x 10 10-6 m/m/°C (10-6 in/in/°F) Pa 5 Solvent and Fuel Resistance 3M™ VHB™ Tapes UL746C Listings - File MH 17478 100 Category QOQW2 Component - Polymeric Adhesive Systems, Electrical Equipment 3M™ VHB™ Tapes/ Product Families 4919F, 4926, 4936, 4936F, 4941, 4941F, 4947F, 4956, 4956F, 4979F Substrates Ceramic Aluminum, Galvanized Steel, Stainless Steel, Enameled Steel, Nickel Coated ABS, Glass (with or without Silane Coating) PVC, Glass/Epoxy, PBT, Polycarbonate, Acrylic/Polyurethane Paint, Polyester Paint Temperature Rating Minimum Maximum -35°C -35°C 110°C 90°C ABS -35°C 75°C 4991 Polycarbonate, Aluminum, Acrylic/ Polyurethane Paint, Polyester Paint -35° 90°C 5915, 5915P, 5915WF 5925, 5925P, 5925WF, 5930, 5030P, 5930WF, 5952, 5952P, 5952WF, 5962, 5962P, 5962WF -35°C 90°C Polycarbonate, Primer 94 Coated Polycarbonate, Aluminum, Acrylic/ Polyurethane Paint, Galvanized Steel, Polyester Paint, Epoxy Paint, Silane Coated Glass, Uncoated Glass, Stainless Steel, Enameled Steel, Glass Epoxy, Polybutylene Terephthalate, Nylon, Polyphenelene Ether (PPE), Acrylic 90 80 80 70 70 60 60 50 50 40 40 30 30 20 20 10 10 0 Water Salt Water Hydraulic Fluid 10W30 Motor Oil Glycol Antifreeze Rigid PVC, ABS -35°C 5952, 5952P, 5952WF Cellulose Acetate Butyrate -35°C 90°C RP16 Aluminum, Silane Coated Glass -35°C 90°C 75°C PVC, ABS -35°C 75°C RP16F, RP25, RP32, RP45, RP62 -35°C 90°C RP62 Stainless Steel, Glass, Acrylic -35°C 90°C PVC, ABS -35°C 75°C Galvanized Steel, Enameled Steel, Nylon, Polycarbonate, Glass Epoxy, Phenolic, PPE/PS Blend, PBT, Epoxy Paint, Polyester Paint, Adhesion Promoter 111 Coated Epoxy Paint, Promoter 111 Coated Polyester Paint, Acrylic Urethane Paint, Epoxy/ Polyester Paint 100 % Adhesive Retention 90 A current list can be found at www.ul.com (select certifications, search file MH17478) Kerosene Isopropyl Alcohol Jet Fuel Gasoline MEK 0 Test Method • Tape between stainless steel and aluminum foil • 72 hours dwell at room temperature • Solvent immersion for 72 hours • Test within 45 minutes after removing from solvent • 90° peel angle • 12 in/min rate of peel • Peel adhesion compared to control Note:  Continuous submersion in chemical solutions is not recommended. The above information is presented to show that occasional chemical contact should not be detrimental to tape performance in most applications in ordinary use. Burn Characteristics 3M™ VHB™ Tape 5958FR Meets FAR 25.853 (a) 12 second vertical burn, Appendix F, Part I (a)(ii) Meets NBS Smoking Density (ASTM F814/E662) Meets Toxicity (Draeger Tube ABD0031, AITM 3.0005) -6- 3M™ VHB™ Tapes Design and Tape Selection Considerations Choose the right tape for the substrate: Adhesives must flow onto the substrate surfaces in order to achieve intimate contact area and allow the molecular force of attraction to develop. The degree of flow of the adhesive on the substrate is largely determined by the surface energy of the substrate. Adhesive Adhesive — Substrate High surface energy — Substrate Low surface energy This illustration demonstrates the effect of surface energy on adhesive interfacial contact. High surface energy materials draw the adhesive closer for high bond strength. Relationship of Adhesion and Surface Energy for 3M™ VHB™ Tape Adhesive Families 4941 Family Generally good adhesion 5952 Family Primer may be needed for good adhesion RP Family 1100-400 50-42 39-38 (High) 37-36 (Medium) 33-18 (Low) Surface Energy (Dynes/cm) Aluminum Stainless Steel Copper Zinc Tin Lead Anodized Aluminum Glass Polyimide Phenolic Nylon Alkyd Enamel Polyester Epoxy Paint Polyurethane ABS Polycarbonate PVC PPE Acrylic PU Enamel Powder Paint PVA Polystyrene Acetal PVDF Paint Powder Paint EVA Polyethylene Polypropylene PVF Silicone PTFE NOTES: There are a wide variety of formulations, surfaces finishes and surface treatments available on substrate materials which can affect adhesion. This chart is intended to provide only a rough estimate of the adhesion levels which can be expected on some common materials relative to a reference surface such as aluminum. Foam type can affect and/or limit maximum adhesive strength. Use the right tape thickness: The necessary thickness of tape depends on the rigidity of substrates and their flatness irregularity. While the 3M™ VHB™ Tapes will conform to a certain amount of irregularity, they will not flow to fill gaps between the materials. For bonding rigid materials with normal flatness, consider use of tapes with thickness of 45 mils (1.1 mm) or greater. As the substrate flexibility increases thinner tapes can be considered. Use the right amount of tape: Because 3M™ VHB™ Tapes are viscoelastic by nature their strength and stiffness is a function of the rate at which they are stressed. They behave stronger with relatively faster rate of stress load (dynamic stresses) and will tend to show creep behavior with stress load acting over a long period of time (static stresses). As a general rule, for static loads, approximately four square inches of tape should be used for each pound of weight to be supported in order to prevent excessive creep. For dynamic loads, the dynamic performance characteristics provided on page 4 should be useful, factoring in the appropriate safety factors. Allow for thermal expansion/contraction: 3M™ VHB™ Tapes can perform well in applications where two bonded surfaces may expand and contract differentially. Assuming good adhesion to the substrates, the tapes can typically tolerate differential movement in the shear plane up to 3 times their thickness. Bond Flexibility: While an advantage for many applications where allowing differential movement is a benefit, the tape bonds are typically more flexible than alternative bonding methods. Suitable design modifications or periodic use of rigid fasteners or adhesives may be needed if additional stiffness is required. Severe Cold Temperature: Applications which require performance at severe cold temperatures must be thoroughly evaluated by the user if the intended use will subject the tape product to high impact stresses. A technical bulletin “3M™ VHB™ Tape Cold Temperature Performance” (70-0707-3991-0) is available for additional information. -7- 3M™ VHB™ Tapes Application Techniques Clean: Most substrates are best prepared by cleaning with a 50:50 mixture of isopropyl alcohol (IPA*) and water prior to applying 3M™ VHB™ Tapes. Exceptions to the general procedure that may require additional surface preparation include: • Heavy Oils: A degreaser or solvent-based cleaner may be required to remove heavy oil or grease from a surface and should be followed by cleaning with IPA/water. • Abrasion: Abrading a surface, followed by cleaning with IPA/water, can remove heavy dirt or oxidation and can increase surface area to improve adhesion. • Adhesion Promoters: Priming a surface can significantly improve initial and ultimate adhesion to many materials such as plastics and paints. • Porous surfaces: Most porous and fibered materials such as wood, particleboard, concrete, etc. need to be sealed to provide a unified surface. • Unique Materials: Special surface preparation may be needed for glass and glass-like materials, copper and copper containing metals, and plastics or rubber that contain components that migrate (e.g. plasticizers). Refer to 3M Technical Bulletin “Surface Preparation for 3M™ VHB™ Tape Applications” for additional details and suggestions. (70-0704-8701-5) *Note: These cleaner solutions contain greater than 250 g/l of volatile organic compounds (VOC). Please consult your local Air Quality Regulations to be sure the cleaner is compliant. When using solvents, be sure to follow the manufacturer’s precautions and directions for use when handling such materials. Pressure: Bond strength is dependent upon the amount of adhesive-to-surface contact developed. Firm application pressure develops better adhesive contact and helps improve bond strength. Typically, good surface contact can be attained by applying enough pressure to insure that the tape experiences approximately 15 psi (100 kPa) pressure. Either roller or platen pressure can be used. Note that rigid surfaces may require 2 or 3 times that much pressure to make the tape experience 15 psi. Temperature: Ideal application temperature range is 70°F to 100°F (21°C to 38°C). Pressure sensitive adhesives use viscous flow to achieve substrate contact area. Minimum suggested application temperatures: • 50°F (10°C): 3M™ VHB™ Tapes 5952 and RP families. • 60°F (15°C): 3M™ VHB™ Tape 4941 family. Note: Initial tape application to surfaces at temperatures below these suggested minimums is not recommended because the adhesive becomes too firm to adhere readily. However, once properly applied, low temperature holding is generally satisfactory. To obtain good performance with all 3M™ VHB™ Tapes, it is important to ensure that the surfaces are dry and free of condensed moisture. Time: After application, the bond strength will increase as the adhesive flows onto the surface (also referred to as “wet out”). At room temperature approximately 50% of ultimate bond strength will be achieved after 20 minutes, 90% after 24 hours and 100% after 72 hours. This flow is faster at higher temperatures and slower at lower temperatures. Ultimate bond strength can be achieved more quickly (and in some cases bond strength can be increased) by exposure of the bond to elevated temperatures (e.g. 150°F [66°C] for 1 hour). This can provide better adhesive wetout onto the substrates. Abrasion of the surfaces or the use of primers/ adhesion promoters can also have the effect of increasing bond strength and achieving ultimate bond strength more quickly. -8- Bond Typical Build vs. Time PERCENT OF FULL BOND 100 80 60 40 20 ROOM TEMP 0 20 MIN 1 HOUR 50°F 24 HOURS 150°F or ABRADE 72 HOURS 3M™ VHB™ Tapes Technical Information The technical information, recommendations and other statements contained in this document are based upon tests or experience that 3M believes are reliable, but the accuracy or completeness of such information is not guaranteed. Product Use Many factors beyond 3M’s control and uniquely within user’s knowledge and control can affect the use and performance of a 3M product in a particular application. Given the variety of factors that can affect the use and performance of a 3M product, user is solely responsible for evaluating the 3M product and determining whether it is fit for a particular purpose and suitable for user’s method of application. Limitied Remedy 3M warrants for 24 months from the date of shipment that 3M™ VHB™ Tape will be free of defects in material and manufacture. 3M MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOTLIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. This limited warranty does not cover damage resulting from the use or inability to use 3M™ VHB™ Tape due to misuse, workmanship in application, or application or storage not in accordance with 3M recommended procedures. AN APPLICATION WARRANTY EXPRESSLY APPROVED AND ISSUED BY 3M IS AN EXCEPTION. THE CUSTOMER MUST APPLY FOR A SPECIFIC APPLICATION WARRANTY AND MEET ALL WARRANTY AND PROCESS REQUIREMENTS TO OBTAIN AN APPLICATION WARRANTY. CONTACT 3M FOR MORE INFORMATION ON APPLICATION WARRANTY TERMS AND CONDITIONS. Limitation of Remedies and Liability If the 3M™ VHB™ Tape is proved to be defective within the warranty period stated above. THE EXCLUSIVE REMEDY, AT 3M’S OPTION, SHALL BE TO REFUND THE PURCHASE PRICE OF OR TO REPAIR OR REPLACE THE DEFECTIVE 3M™ VHB™ TAPE. 3M shall not otherwise be liable for loss or damages, whether direct, indirect, special, incidental, or consequential, regardless of the legal theory asserted, including negligence, warranty, or strict liability. ISO 9001 This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001 standards. Industrial Adhesives and Tapes Division 3M Center, Building 225-3S-06 St. Paul, MN 55144-1000 800-362-3550 • 877-369-2923 (Fax) www.3M.com/vhb Recycled Paper 40% pre-consumer 10% post-consumer Recycle, Neg -9- 3M and VHB are trademarks of 3M Company. Printed in U.S.A. ©3M 2014   70070938637   (10/14)