1/4-5-4929

3 VHB™ Tapes Technical Data November, 2005 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. Note: All 3M™ VHB™ Tapes should be thoroughly evaluated by the user under actual use conditions with intended substrates to determine whether a specific tape is fit for a particular purpose and suitable for user’s method of application, especially if expected use involves extreme environmental conditions. 3M™ VHB™ Tape Products Tape Number Color Thickness in. (mm) Tape Number Color Thickness in. (mm) Tape Number Color Thickness in. (mm) 4611 4618 4622 4624 4646 4655 4905 4910 4919F 4920 4926 Dk Gray White White White Dk Gray Dk Gray Clear Clear Black White Gray 0.045 (1.1) 0.025 (0.64) 0.045 (1.1) 0.062 (1.55) 0.025 (0.64) 0.062 (1.55) 0.020 (0.5) 0.040 (1.0) 0.025 (0.64) 0.015 (0.4) 0.015 (0.4) 4929 4930 (F) 4932 4936 (F) 4941 (F) 4943F 4945 4946 4947F 4949 4950 Black White White Gray Gray Gray White White Black Black White 0.025 (0.64) 0.025 (0.64) 0.025 (0.64) 0.025 (0.64) 0.045 (1.1) 0.045 (1.1) 0.045 (1.1) 0.045 (1.1) 0.045 (1.1) 0.045 (1.1) 0.045 (1.1) 4951 4952 4955 4956 (F) 4957F 4959 (F) 4979F 4991 5925 5952 5962 White White White Gray Gray White Black Gray Black Black Black 0.045 (1.1) 0.045 (1.1) 0.08 (2.0) 0.062 (1.55) 0.062 (1.55) 0.012 (3.0) 0.062 (1.55) 0.09 (2.3) 0.025 (0.64) 0.045 (1.1) 0.062 (1.55) (F) after the product number designate that both a paper and film liner product version are available. [e.g. 4930 (paper liner) and 4930F (film liner)] 3M™ VHB™ Tapes Adhesive Types: Multi-Purpose Acrylic: This adhesive bonds to a wide range of materials including metals, glass, and high and medium surface energy plastics and paints. This unique adhesive also has the ability to resist migration of plasticizers in vinyl substrates. Modified Acrylic: This adhesive bonds to medium low surface energy paints and plastics, including many powder coated paints in addition to the substrates listed with the multi-purpose acrylic adhesive (except plasticized vinyl). General Purpose Acrylic: This adhesive bonds to most higher surface energy substrates including metal, glass and high surface energy plastics. Low Temperature Appliable Acrylic: This adhesive can make bonds down to 32°F (0°C), compared to 50°F (10°C) for most acrylic adhesives. This adhesive system bonds to most high surface energy substrates including metal, glass and high surface energy plastics. Low Surface Energy: This high performance synthetic adhesive bonds to many lower surface energy substrates, including many plastics and power coated paints, plus smooth general purpose substrates. 3M™ VHB™ Tapes Foam Types: Conformable: This foam provides high strength with the capability of conforming to the irregularities of rigid substrates, even when there might be slight mismatch. Very Conformable: This foam provides the highest level of conformability while maintaining high internal strength. Firm: This foam provides the highest level of foam strength in the 3M™ VHB™ Tapes family. Clear: Not technically a foam, this solid acrylic material provides excellent clarity. -1- 3M™ VHB™ Tapes 3M™ VHB™ Tape Families: 4941 This family utilizes multi-purpose acrylic adhesive on both sides of conformable foam. 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 foam provides good contact, even with mismatched substrates. Available in gray and black. 5952 This family matches the modified acrylic adhesive on both sides of very conformable foam, providing adhesion to the broadest range of substrates, including most powder coated paints. Available in dark gray. 4950 This family has general purpose adhesive on both sides of firm type foam. This family is typically used on metal, glass and high surface energy plastic substrates. Available in white and black. 4945 This family has multi-purpose adhesive on both sides of firm foam. Available in white. 4910 This family of clear tapes is excellent for applications where clear or colorless is desired. The general purpose adhesive on both sides is suitable for high surface energy substrates. 4951 This family of tapes is based around the low temperature appliable acrylic adhesive system, utilized on both firm and conformable foam types. These products are suitable for high surface energy substrates. Available in white (firm foam) and gray (conformable foam). 4952 This family utilizes the low surface energy adhesive on a firm foam. Available in white. 4611 This family has a general purpose adhesive on both sides of firm foam. This family of tapes is typically used on metal substrates, and has the added feature of high temperature resistance, making it often suitable for bonding prior to high temperature paint processing. Available in dark gray. 4622 This family has general purpose adhesive on the face side (the side that typically would be bonded first) and multi-purpose adhesive on the liner side (the side exposed when the release liner is removed) of a conformable foam. Available in white. 3M™ VHB™ Tape Product Family Guide Family Color Thickness inches (mm) 0.015 (0.4) Foam type Adhesive 4941 Gray 5952 Black Dk Gray Conform Conform Very Conf Multi-Purpose Modified 4926 4945 4910 4952 4611 4622 White 4950 Black White Clear White Gray White Dk Gray White Firm Firm Firm n/a Firm Conform Firm Firm Conform General Purpose Multi-Purp Gen-Purp 4936 4936F 4919F 5925 Gen-Purp Gen/Multi 4930 4930F 4929 4932 4646 4618 4952 4611 4622 4655 4624 4910 0.045 (1.1) 4941 4941F 4947F 5952 0.062 (1.55) 4956 4956F 4979F 5962 0.080 (2.0) 0.120 (3.0) LSE 4905 0.040 (1.0) 0.090 (2.3) Low Temp Apply 4920 0.020 (0.5) 0.025 (0.64) 4951 4950 4949 4945 4946 4951 4943 4957 4955 4991 4959 4959F NOTE: For easy product comparison, data in this product information page will be organized by product family. -2- 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 Product Family Number Color Thickness Inches (mm) Tolerance Adhesive Adhesive Type Foam Type Density lb/ft 3 (kg/m3 ) Type Release Liner Thickness Inches (mm) Color 0.025 (0.64) ± 15% Multi-Purp Conform 45 (720) PE Film 0.005 (0.125) Red Gray 0.015 (0.4) ± 15% Multi-Purp Conform 45 (720) Paper 0.003 (0.08) White (printed) White (printed) Gray 0.025 (0.64) ± 15% Multi-Purp Conform 45 (720) Paper 0.003 (0.08) Gray 0.025 (0.64) ± 15% Multi-Purp Conform 45 (720) PE Film 0.005 (0.125) Clear 4941 Gray 0.045 (1.1) ± 10% Multi-Purp Conform 45 (720) Paper 0.003 (0.08) White (printed) 4941F Gray 0.045 (1.1) ± 10% Multi-Purp Conform 45 (720) PE Film 0.005 (0.125) Red 4947F Black 0.045 (1.1) ± 10% Multi-Purp Conform 45 (720) PE Film 0.005 (0.125) Red 4956 Gray 0.062 (1.55) ± 10% Multi-Purp Conform 45 (720) Paper 0.003 (0.08) White (printed) 4956F Gray 0.062 (1.55) ± 10% Multi-Purp Conform 45 (720) PE Film 0.005 (0.125) Clear 4979F Black 0.062 (1.55) ± 10% Multi-Purp Conform 45 (720) PE Film 0.005 (0.125) Clear 4991 Gray 0.090 ± 10% Multi-Purp Conform 45 (720) PE Film 0.005 (0.125) Red 5925 Black 0.025 (0.64) ± 15% Modified Very Conf 37 (590) PE Film 0.005 (0.125) Red 5952 Black 0.045 (1.1) ± 10% Modified Very Conf 37 (590) PE Film 0.005 (0.125) Red 5962 Black 0.062 (1.55) ± 10% Modified Very Conf 40 (640) PE Film 0.005 (0.125) Red 4920 White 0.015 (0.4) ± 15% Gen Purp Firm 50 (800) Paper 0.003 (0.08) White (printed) 4929 Black 0.025 (0.64) ± 15% Gen Purp Firm 50 (800) Polyester 0.002 (0.05) Clear 4930 White 0.025 (0.64) ± 15% Gen Purp Firm 50 (800) White (printed) 4930F White 0.025 (0.64) ± 15% Gen Purp Firm 50 4949 Black 0.045 (1.1) ± 10% Gen Purp Firm 50 4950 White 0.045 (1.1) ± 10% Gen Purp Firm 50 (800) 4955 White 0.080 (2.0) ± 10% Gen Purp Firm 45 (720) 4959 White 0.120 (3.0) ± 10% Gen Purp Firm 45 (720) 4959F White 0.120 (3.0) ± 10% Gen Purp Firm 45 (720) 4945 White 0.045 (1.1) ± 10% Multi-Purp Firm 50 (800) Paper 4946 White 0.045 (1.1) ± 10% Multi-Purp Firm 50 (800) PE Film 4905 Clear 0.020 (0.5) ± 15% Gen Purp Solid 60 (960) PE Film 4910 Clear 0.040 (1.0) ± 10% Gen Purp Solid 60 (960) PE Film Firm 4622 4611 4952 4951 4950 5952 4941 4936 4936F 4945 Black 4926 4910 4919F (2.3) Paper 0.003 (0.08) (800) PE Film 0.005 (0.125) Red (800) Polyester 0.002 (0.05) Clear 0.003 (0.08) White (printed) Polyester 0.002 (0.05) Clear Polyester 0.002 (0.05) Clear PE Film (0.125) Red 0.003 (0.08) White (printed) 0.005 (0.125) Clear 0.005 (0.125) Red 0.005 (0.125) Red Paper 0.005 4951 White 0.045 (1.1) ± 10% Low Temp Appl 50 (800) Polyester 0.002 (0.05) Clear 4943F Gray 0.045 (1.1) ± 10% Low Temp Appl Conform 45 (720) Polyester 0.002 (0.05) Clear 4957F Gray 0.062 (1.55) ± 10% Low Temp Appl Conform 45 (720) Polyester 0.002 (0.05) Clear 4932 White 0.025 (0.64) ± 15% LSE Firm 50 (800) Paper 0.003 (0.08) White (printed) 4952 White 0.045 (1.1) ± 10% LSE Firm 50 (800) Paper 0.003 (0.08) White (printed) 4611 Dk Gray 0.045 (1.1) ± 10% Gen Purp Firm 52 (840) PE Film 0.005 (0.125) Red 4646 Dk Gray 0.025 (0.64) ± 15% Gen Purp Firm 52 (840) PE Film 0.005 (0.125) Red 4655 Dk Gray 0.062 (1.55) ± 10% Gen Purp Firm 52 (840) PE Film 0.005 (0.125) Red 4618 White 0.025 (0.64) ± 15% Gen/Multi Purp Conform 45 (720) PE Film 0.004 (0.10) Green 4622 White 0.045 (1.1) ± 10% Gen/Multi Purp Conform 45 (720) PE Film 0.004 (0.10) Green 4624 White 0.062 (1.55) ± 10% Gen/Multi Purp Conform 45 (720) PE Film 0.004 (0.10) Green -3- 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 Performance Characteristics 3M™ VHB™ Tapes Color Thickness Inches 4919F Black 0.025 17 (300) 90 (620) 80 (550) 4926 Gray 0.015 12 (210) 95 (655) 90 (620) 4936 (F) Gray 0.025 17 (300) 90 (620) 80 (550) 4941 (F) Gray 0.045 20 (350) 85 (585) 70 (480) (480) 90° Peel Adhesion N/100 mm lb/in Normal Tensile lb/in 2 kPa Dynamic Overlap Shear lb/in2 kPa Black 0.045 20 (350) 85 (585) 70 Gray 0.062 20 (350) 80 (550) 70 (480) 4979F Black 0.062 20 (350) 80 (550) 70 (480) 4991 Gray 0.090 20 (350) 70 (480) 65 (450) 5925 Black 0.025 17 (300) 90 (620) 90 (620) 5952 Black 0.045 20 (350) 90 (620) 80 (550) 5962 Black 0.062 20 (350) 90 (620) 80 (550) 4920 White 0.015 15 (260) 160 (1100) 100 (690) (690) Black 0.025 20 (350) 160 (1100) 100 White 0.025 20 (350) 160 (1100) 100 (690) 4949 Black 0.045 25 (440) 140 (970) 80 (550) 4950 White 0.045 25 (440) 140 (970) 80 (550) 4955 White 0.080 20 (350) 95 (655) 70 (480) 4959 (F) White 0.120 20 (350) 75 (520) 55 (380) 4945 White 0.045 25 (440) 140 (970) 80 (550) 4946 White 0.045 25 (440) 140 (970) 80 (550) 4905 Clear 0.020 12 (210) 100 (690) 70 (480) 4910 Clear 0.040 15 (260) 100 (690) 70 (480) 4622 4611 4952 4951 4950 4929 4930 (F) 4945 4947F 4956 (F) 4910 5952 4941 Family Dynamic Adhesion Performance Product Number 4951 White 0.045 18 (315) 110 (760) 80 (550) 4943F Gray 0.045 20 (350) 85 (585) 70 (480) 4957F Gray 0.062 20 (350) 75 (515) 70 (480) 4932 White 0.025 20 (350) 100 (690) 100 (690) 4952 White 0.045 25 (440) 80 (550) 80 (550) 4611 Dk Gray 0.045 18 (315) 90 (590) 65 (445) 4646 Dk Gray 0.025 15 (250) 100 (690) 80 (550) 4655 Dk Gray 0.062 18 (315) 80 (550) 60 (415) 4618 White 0.025 17 (300) 85 (580) 80 (550) 4622 White 0.045 20 (350) 70 (480) 65 (445) 4624 White 0.062 20 (350) 55 (380) 60 (410) 90° Peel Adhesion - Based on ASTM D3330 -To stainless steel, room temperature, jaw speed 12 in/min (305 mm/min). Average force to remove is measured. XXXXX Normal Tensile (T-Block Tensile) - ASTM D-897 - To aluminum, room temperature, 1 in2 (6.45 cm2), jaw speed 2 in/min (50 mm/min.) Peak force to separate is measured. 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 measured. -4- 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 Performance Characteristics Static Shear Weight (grams) that 1/2 square inch will hold 10,000 minutes (7 days) 72°F 150°F 200°F 250°F 350°F (22°C) (66°C) (93°C) (121°C) (177°C) Short Term (Minutes, Hours) °C °F °C 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) 5925 Black 0.025 1000 500 500 250 300 (149) 250 (121) 5952 Black 0.045 1000 500 500 250 300 (149) 250 (121) 5962 Black 0.062 1000 500 500 250 300 (149) 250 (121) 4920 White 0.015 1500 500 500 300 (149) 200 (93) 4929 Black 0.025 1500 500 500 300 (149) 200 (93) 4930 (F) White 0.025 1500 500 500 300 (149) 200 (93) 4949 Black 0.045 1500 500 500 300 (149) 200 (93) 4950 White 0.045 1500 1000 500 300 (149) 200 (93) 4955 White 0.080 1500 1000 750 750 750 400 (204) 300 (149) 4959 (F) White 0.120 1500 1000 750 750 750 400 (204) 300 (149) 4945 White 0.045 1500 500 500 300 (149) 200 (93) 4946 White 0.045 1500 500 500 300 (149) 200 (93) 4905 Clear 0.020 1000 500 500 300 (149) 200 (93) 4910 Clear 0.040 1000 500 500 300 (149) 200 (93) 4622 4611 4952 4951 4950 5952 4941 4919F 4945 °F Long Term (Days, Weeks) 4910 Family 3M™ VHB™ Tapes Product Thickness Number Color Inches Temperature Tolerance 4951 White 0.045 1250 500 500 300 (149) 200 (93) 4943F Gray 0.045 1000 500 500 300 (149) 200 (93) 4957F Gray 0.062 1000 500 500 300 (149) 200 (93) 4932 White 0.025 1500 500 200 (93) 160 (71) 4952 White 0.045 1500 500 200 (93) 160 (71) 4611 Dk Gray 0.045 1500 750 750 750 750 450 (232) 300 (149) 4646 Dk Gray 0.025 1500 750 750 750 750 450 (232) 300 (149) 4655 Dk Gray 0.062 1500 750 750 750 750 450 (232) 300 (149) 4618 White 0.025 1000 250 250 250 (121) 200 (93) 4622 White 0.045 1000 250 250 250 (121) 200 (93) 4624 White 0.062 1000 250 250 250 (121) 200 (93) Static Shear - ASTM D3654 - To stainless steel, tested at various temperatures and gram loadings. 0.5 in2 (3.22 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 Available Sizes Maximum Roll Length Tape Thickness inches (mm) Standard Length yards (meters) Minimum Width inches (mm) Maximum Width inches (mm) 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) 0.015 (0.4) 72 (65.8) 0.25 (6.4) 48 (1220) 144 (131.6) 175 (160) 360 (330) 0.020 (0.5) 72 (65.8) 0.25 (6.4) 48 (1220) 72 (65.8) 108 (98.8) 175 (160) 0.025 (0.64) 72 (65.8) 0.25 (6.4) 48 (1220) 72 (65.8) 108 (98.8) 175 (160) 0.040 (1.0) 36 (32.9) 0.25 (6.4) 48 (1220) 72 (65.8) 108 (98.8) 144 (131.6) 0.045 (1.1) 36 (32.9) 0.25 (6.4) 48 (1220) 72 (65.8) 108 (98.8) 144 (131.6) 0.062 (1.55) 36 (32.9) 0.25 (6.4) 46 (1170) 72 (65.8) 72 (65.8) 108 (98.8) 0.080 (2.0) 36 (32.9) 0.25 (6.4) 46 (1170) 36 (32.9) 36 (32.9) 72 (65.8) 0.090 (2.3) 36 (32.9) 0.25 (6.4) 46 (1170) 36 (32.9) 36 (32.9) 72 (65.8) 0.120 (4959) (3.0) 36 (32.9) 0.5 (12.7) 46 (1170) N/A N/A N/A N/A 36 (32.9) 0.120 (4959F) (3.0) 36 (32.9) 0.25 (6.4) 46 (1170) 36 (32.9) 36 (32.9) 36 (32.9) Slitting Tolerance Standard slitting tolerance ± 1/32 inch (± 0.031 inch, ± 0.8 mm). Precision slitting with slitting tolerance of ± 1/64 inch (± 0.016 in., ± 0.44 mm) is available on select products with minimum order of full web increments. Core Size All products are available 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 manufacture 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 4266 would translate to a date of manufacture of Sept. 22 (266th day of year) in 2004. 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. -6- 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. Dielectric Breakdown Strength (ASTM D149) Outgassing: 3M™ VHB™ Tapes 4930 4932 4945 % TML %VCM %WVR 0.77 2.41 1.24 0.01 0.66 0.01 0.21 0.23 0.19 3M™ VHB™ Tapes TML - Total Mass Loss VCM - Volatile Condensible Materials WVR - Water Vapor Regained NASA Reference Publication, “Outgassing Data for Selecting Spacecraft Materials”, (11/18/2004) Available online at http://outgassing.nasa.gov 3M™ VHB™ Tapes UL746C Listings - File MH 17478 Category QOQW2 Component - Polymeric Adhesive Systems, Electrical Equipment (in volts/mil) 4941 4926 5952 5925 4950 4920 4910 4611 360 330 455 520 460 640 630 330 3M™ VHB™ Tapes/ Product Families 4919F, 4926, 4936, 4936F, 4941, 4941F, 4947F, 4956, 4956F, 4979F 3M™ VHB™ Tapes 4941 at 1 kHz at 1 MHz 5952 at 1 kHz at 1 MHz 4950 at 1 kHz at 1 MHz 4910 at 1 kHz at 1 MHz 4611 at 1 kHz at 1 MHz Dielectric Constant Dissipation Factor 2.29 1.99 2.14 1.95 2.28 1.99 3.21 2.68 2.80 2.43 0.0245 0.0374 0.0065 0.0506 0.0227 0.0370 0.0214 0.0595 0.0130 0.0564 4941 5952 4950 4920 4910 4611 75°C 110°C Thermal Conductivity - K-value 3M™ VHB™ Tapes PBT, Acrylic -35°C 90°C ABS, Polycarbonate, Rigid PVC -35°C 75°C Phenolic, aluminum, galvanized steel, alkyd enamel -35°C 110°C ABS, polycarbonate, polyimide, stainless steel, acrylic/polyurethane paint, polyester paint -35°C 90°C 4941 5952 4950/4945 4910 4611 BTU in/ hr ft2 °F (w/mK) 0.53 0.37 0.63 1.09 0.77 (0.08) (0.05) (0.09) (0.16) (0.11) Surface Resistance (in ohms/square) 2.1 x 10 2.5 x 1014 1.5 x 1015 1.7 x 1015 3.1 x 1015 1.4 x 1015 2.7 x 10 >1016 >1016 >1016 >1016 >1016 14 % A d h e s i v e R e t e n t i o n unplasticized PVC -35°C 75°C Polycarbonate, aluminum, acrylic/polyurethane paint, galvanized steel, polyester paint -35°C 90°C Rigid PVC -35°C 75°C 5952 Acrylic, Cellulose Acetate Butyrate -35°C 90°C 4991 Polycarbonate, aluminum, acrylic/ polyurethane paint, polyester paint -35°C 90°C 4611, 4646, 4655 Stainless steel, aluminum, galvanized steel, glass, glass/epoxy, phenolic -35°C 110°C Nylon, polycarbonate -35°C 90°C ABS, rigid PVC -35°C 75°C 14 Typical 3M™ VHB™ Tape Properties for Modeling Poisson’s Ratio 0.49 4945, 4946 5925, 5952, 5962 Volume Resistivity (in ohm-cm) Youngs Modulus: For VHB tapes the Youngs Modulus will be about 3 times the Shear Modulus. 90°C -35°C (When units of K-value are BTU-in/hr ft2 °F and thickness is given in inches.) Shear Modulus (@25°C, 1 Hz) 4950 Family: 6 x 105 Pa 4941 Family: 3 x 105 Pa (Shear Modulus is both temperature and frequency dependent). 110°C -35°C -35°C R-Value = thickness K-value Thermal Coefficient of Expansion 1 x 10-4 in/in/°F 1.8 x 10-4 mm/mm/°C -35°C 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 Aluminum, galvanized steel, enameled steel, stainless steel, ceramic, glass/epoxy Resistivity (ASTM D257) 3M™ VHB™ Tapes Ceramic ABS 4920, 4930, 4950 Dielectric Constant (ASTM D150) Temperature Rating Minimum Maximum Substrates A current list can be found at www.ul.com (select certifications, search file MH17478) Solvent and Fuel Resistance 100 90 80 70 60 50 40 30 20 10 0 Water Salt Water Hydraulic Fluid 10W30 Motor Oil Glycol Antifreeze Kerosene 100 90 80 70 60 50 40 30 20 10 0 Isopropyl Alcohol Jet Fuel Gasoline MEK 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. -7- 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 — Substrate High surface energy 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. NOTE: Low surface energy adhesive may be less affected by surface energy. 100% Lo NOTE: Foam type can affect and/or limit maximum adheisve strength. ifi ed Ac ry lic G M en ul er tiTe a Pu m lP pe rp ur os ra tu pos e re Ad e Ad Ad he h si he es ve si ve ive od 50% w M Estimate of % of Maximum 3M™ VHB™ Tape Adhesion Relationship of Adhesion and Surface Energy for 3M™ VHB™ Tape Adhesive Families 0% Surface Energy (Dynes/cm) MEDIUM HIGH 400-1100 Aluminum Stainless Steel Copper Zinc Tin Lead Anodized Aluminum Glass 42-50 Kapton™ Phenolic Nylon™ Alkyd Enamel Polyester Epoxy Paint Polyurethane 38-39 ABS Polycarbonate (Lexan™) PVC Noryl™ Acrylic Polane™ Paint Powder Paint LOW 36-37 PVA Polystyrene Acetal Powder Paint 18-33 EVA Polyethylene Polypropylene Tedlar™ Silicone Teflon™ 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. Light surface abrasion will significantly increase adhesion levels on many materials, except when using tapes 4952/4932. 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 alternate 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” is available for additional information. (70-0707-3991-0) -8- 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 4950, 5952, 4910, 4952, 4611, 4622 families. • 60°F (15°C): 3M™ VHB™ Tapes 4941, 4945 families. • 32°F (0°C): 3M™ VHB™ Tape 4951 families. 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. 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. -9- Bond Typical Build vs. Time 100 PERCENT OF FULL BOND ■ ■ ■ ■ ● ■ ● ■ ● ■ ● ● ■ ● ■ ● ■ ● ■ ● ● ● ● 40 ★ ● ● 80■ 60 ● ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 20 ● ROOM TEMP 0 20 MIN 1 HOUR ★ 50°F 24 HOURS ■ 150°F or ABRADE 72 HOURS 3M™ VHB™ Tapes Special Cases: Rough Surfaces with 3M™ VHB™ Tapes 4932/4952 – 3M™ VHB™ Tapes 4932/4952 were designed to adhere to many low surface energy substrates. Rough surfaces created by light abrasion or textured molds are typically detrimental to bond strength with this tape family. Plasticized Vinyl – Plasticizers compounded in soft vinyl can migrate into adhesives and significantly change their performance characteristics. 3M™ VHB™ Tapes 4941 and 4945 families have 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). Product Use All statements, technical information and recommendations contained in this document are based upon tests or experience that 3M believes are reliable. However, many factors beyond 3M’s control can affect the use and performance of a 3M product in a particular application, including the conditions under which the product is used and the time and environmental conditions in which the product is expected to perform. Since these factors are uniquely within the user’s knowledge and control, it is essential that the user evaluate the 3M product to determine whether it is fit for a particular purpose and suitable for the user’s method of application. Limited Warranty 3M warrants for 24 months from the date of manufacture that 3M™ VHB™ Tape will be free of defects in material and manufacture. 3M MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED 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. 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: 2000 3 This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001: 2000 standards. Industrial Business Industrial Adhesives and Tapes Division 3M Center, Building 21-1W-10, 900 Bush Avenue St. Paul, MN 55144-1000 800-362-3550 • 877-369-2923 (fax) www.3M.com/vhb Recycled Paper 40% pre-consumer 10% post-consumer - 10 - Kapton, Tedlar, Nylon and Teflon are registered trademarks of E.I. Dupont De Nemours & Co. Inc. Lexan and Noryl are registered trademarks of General Electric Co. Polane is a registered trademark of Sherwin Williams Co. Printed in U.S.A. ©3M 2005 70-0709-3863-7 (11/05)