3 Scotch-Weld TM Epoxy Adhesives DP460 Off-White * DP460 NS Technical Data March, 2004 Product Description 3MTM Scotch-WeldTM Epoxy Adhesives DP460 Off-White and DP460 NS are high performance, two-part epoxy adhesives offering outstanding shear and peel adhesion, and very high levels of durability. Features * High shear strength * Controlled flow * High peel strength * 60 minute worklife * Outstanding environmental performance * Non sag (Scotch-Weld DP460 NS) * Easy mixing Typical Uncured Physical Properties Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Product Scotch-Weld Epoxy Adhesive DP460 Off-White Scotch-Weld Epoxy Adhesive DP460 NS Viscosity (approx.) @ 73F (23C) Base Accelerator 20,000-50,000 cps 8,000-14,000 cps 150,000-275,000 cps 8,000-14,000 cps Base Resin Base Accelerator epoxy amine epoxy amine Color Base Accelerator white amber white amber Net Weight Lbs./Gallon Base Accelerator 9.3-9.7 8.8-9.2 9.3-9.7 8.8-9.2 Mix Ratio (B:A) Volume Weight 2:1 2:0.96 2:1 2:0.96 Worklife, 73F (23C) 20 g mixed 10 g mixed 5 g mixed 60 minutes 75 minutes 90 minutes 60 minutes 60 minutes 60 minutes -1- Scotch-Weld TM Epoxy Adhesives DP460 Off-White * DP460 NS Typical Cured Thermal Properties Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Product 3MTM Scotch-WeldTM Epoxy Adhesive DP460 Off-White 3MTM Scotch-WeldTM Epoxy Adhesive DP460 NS Opaque, off-white Off-white 75-80 78-84 59 x 10-6 159 x 10-6 74.44 x 10-6 166 x 10-6 0.104 0.104 Physical Color Shore D Hardness Thermal Coefficient of Thermal Expansion (in./in./C) Below Tg Above Tg Thermal Conductivity (btu - ft./ft.2 - hr. - F) @ 45C Typical Curing Characteristics Electrical Dielectric Strength (ASTM D 149) 1100 volts/mil 727 volts/mil Volume Resistivity (ASTM D 257) 2.4 x 1014 ohm-cm 3.25 x 1015 ohm-cm Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Rate of Strength Build-Up Aluminum, Overlap Shear (7 mil Bondline) (ASTM D 1002-72) Bonds Tested at 73F (23C) Scotch-Weld Epoxy Adhesive DP460 Off-White Time in Oven 30 min. 60 90 2 hr. 3 5 6 7 24 Cure Temperature 73F (23C) 120F1 (49C) 140F1 (60C) -- -- -- -- -- 400 1000 3500 4000/602 <50 1300 4300/602 4400/602 4800/602 -- -- -- 3000/602 4500/602 -- 4800 -- -- -- -- Scotch-Weld Epoxy Adhesive DP460 NS Time in Oven Cure Temperature 73F (23C) 120F1 (49C) 160F1 (71C) -- -- -- 1 46 970 4500 - 10 2800 5050 5400 5570 - 4860 5250 5300 5470 5320 5140 5210 15 min. 30 60 2 hr. 4 6 24 This represents the oven temperature to which the bonds were subjected for the prescribed time. The average bondline temperature during the cure time will be somewhat lower than the oven temperature. 2 The value in the denominator is the expected minimum 73F (23C) T-peel strength (piw) measured after the indicated cure cycle. NOTE: The data in this Technical Data Sheet were generated using the 3MTM EPXTM Applicator System equipped with an EPX static mixer, according to manufacturer's directions. Thorough hand-mixing will afford comparable results. 1 -2- Scotch-Weld TM Epoxy Adhesives DP460 Off-White * DP460 NS Typical Adhesive Performance Characteristics Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Substrates and Testing A. Overlap Shear (ASTM D 1002-72) Overlap shear (OLS) strengths were measured on 1 in. wide 1/2 in. overlap specimens. These bonds were made individually using 1 in. x 4 in. pieces of substrate except for aluminum. Two panels 0.063 in. thick, 4 in. x 7 in. of 2024T-3 clad aluminum were bonded and cut into 1 in. wide samples after 24 hours. The thickness of the bondline was 0.005-0.008 in. All strengths were measured at 73F (23C) except where noted. The separation rate of the testing jaws was 0.1 in. per minute for metals, 2 in. per minute for plastics and 20 in. per minute for rubbers. The thickness of the substrates were: steel, 0.060 in.; other metals, 0.05-0.064 in.; rubbers, 0.125 in.; plastics, 0.125 in. B. T-peel (ASTM D 1876-61T) T-peel strengths were measured on 1 in. wide bonds at 73F (23C). The testing jaw separation rate was 20 inches per minute. The substrates were 0.032 in. thick. C. Bell Peel (ASTM D 3167) Bell peel strengths were measured on 1/2 in. wide bonds at the temperatures noted. The testing jaw separation rate was 6 in. per minute. The bonds are made with 0.064 in. bonded to 0.025 in. thick adherends. D. Cure Cycle With the exception of Rate of Strength Build-Up Tests, all bonds, were cured 7 days at 73F (23C) at 50% RH before testing or subjected to further conditioning or environmental aging. Aluminum, Overlap Shear, at Temperature (PSI) 3MTM Scotch-WeldTM Epoxy Adhesive DP460 Off-White 3MTM Scotch-WeldTM Epoxy Adhesive DP460 NS 4500 4500 700 1000 1400 2500 220 4900 4650 1360 1810 2630 2680 420 Scotch-Weld Epoxy Adhesive DP460 Off-White Scotch-Weld Epoxy Adhesive DP460 NS Etched Oakite degrease MEK/abrade/MEK 4500 3200 3500 4500 2300 2670 Cold Rolled Steel Oakite degrease MEK/abrade/MEK 3500 2800 -- 3600 Copper- MEK/abrade/MEK 4000 4400 Brass- MEK/abrade/MEK CDA 260 Cartridge -- 4000 4200 3400 -- -- Stainless Steel MEK/abrade/MEK 4000 2400 2000 2100 2480 3000 -67F (-55C) 73F (23C) 180F (82C) (15 min.)1 (30 min.)1 (60 min.)1 (4 hr.)1 250F (121C) (15 min.)1 1Represents time in test chamber oven before test. Metals, Overlap Shear, Tested @ 73F (23C) (PSI) Aluminum Galvanized Steel- Oakite degrease Hot dipped Electrodeposited -3- Scotch-Weld TM Epoxy Adhesives DP460 Off-White * DP460 NS Typical Adhesive Performance Characteristics (continued) Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Substrates and Testing (continued) Aluminum, T-Peel (PIW), at Temperature Aluminum - etched (17-20 mil bondline) 3MTM Scotch-WeldTM 3MTM Scotch-WeldTM Epoxy Adhesive Epoxy Adhesive DP460 Off-White DP460 NS -67F (-55C) 73F (23C) 180F (82C) 5-10 60 3-5 3-5 60 20 Scotch-Weld Epoxy Adhesive DP460 Off-White Scotch-Weld Epoxy Adhesive DP460 NS not tested Metals, T-Peel, Tested @ 73F (23C) (PIW) Aluminum, etched 17-20 mil bondline 5-8 mil bondline 60 50 Cold Rolled Steel 17-20 mil bondline Oakite degreased MEK/abrade/MEK 40 25 not tested Aluminum Bell Peel (PIW), at Temperature (ASTM D 3167) Scotch-Weld Epoxy Adhesive DP460 NS -67F (-55C) 73F (23C) 180F (82C) 19 77 39 Other Substrates, Overlap Shear Tested @ 73F (23C) Substrate ABS PVC Polycarbonate Polyacrylic Polystryene FRP Phenolic SBR/Steel Neoprene/Steel 1Isopropyl Surf. Prep. 1 Surf. Prep. 2 Scotch-Weld Scotch-Weld Epoxy Adhesive Epoxy Adhesive DP460 Off-White DP460 NS Scotch-Weld Scotch-Weld Epoxy Adhesive Epoxy Adhesive DP460 Off-White DP460 NS 300 500 400 220 450 800 14003 1503 100 345 8153 380 210 320 570 12103 130 90 575 350 500 330 4753 10003 14003 1403 1203 572 3133 390 270 490 13793 12313 2393 1143 Alcohol Wipe. See Surface Preparation Section D for additional information. 2Isopropyl Alcohol/Abrade/Isopropyl Alcohol: See Surface Preparation Section E for additional information. 3Substrate failure. -4- Scotch-Weld TM Epoxy Adhesives DP460 Off-White * DP460 NS Typical Adhesive Performance Characteristics (continued) Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Substrates and Testing (continued) Environmental Resistance Aluminum (Etched) Measured by Overlap Shear Tested @ 73F (23C) (PSI)1 (ASTM D 1002-72) Environment Condition 73F (23C)/50% RH 30 d2 i3 3MTM Scotch-WeldTM 3MTM Scotch-WeldTM Epoxy Adhesive Epoxy Adhesive DP-460 Off-White DP-460 NS 5200 5460 5100 4550 Distilled Water 30 d, Water Vapor 120F (49C)/100% RH, 30 d 200F (93C)/100% RH, 14 d 4500 3100 3920 3370 Antifreeze/H2O (50/50) 180F (82C), 30 d, i 5000 4400 Isopropyl Alcohol 73F (23C), 30 d, i 5700 5320 Methyl Ethyl Ketone 73F (23C), 30 d, i 4200 4000 Salt Spray (5%) 95F (35C), 30 d 5100 5200 Skydrol LD-4 150F (66C), 30 d, i 3700 5250 1Data reported are actual values from the lots tested and may be higher than values published elsewhere in this Technical Data Sheet. 2 d = days 3 i = immersion Environmental Resistance Galvanized Steels1 Measured by Overlap Shear Tested @ 73F (23C) (PSI)2 (ASTM D 1002-72) Hot Dipped Electrodeposited Scotch-Weld Scotch-Weld Scotch-Weld Scotch-Weld Epoxy Epoxy Epoxy Epoxy Adhesive Adhesive Adhesive Adhesive DP460 DP460 DP460 DP460 Off-White NS Off-White NS Environment Condition 73F (23C)/50% RH 30 d3 2200 not tested 2300 not tested Distilled Water 30 d, i4 2300 not tested 2300 not tested Water Vapor 120F (49C)/100% RH, 30 d 200F (93C)/100% RH, 14 d 1900 1500 not tested 2000 1000 not tested Antifreeze/H2O (50/50) 180F (82C), 30 d, i 2000 not tested 1950 not tested Isopropyl Alcohol 73F (23C), 30 d, i 2000 not tested 2200 not tested Methyl Ethyl Ketone 73F (23C), 30 d, i 2000 not tested 2200 not tested Trichloroethane 73F (23C), 30 d, i 2300 not tested 2300 not tested Salt Spray (5%) 95F (35C), 30d 1900 not tested 1500 not tested 1Hot dipped or electrodeposited. Galvanized steels may afford a wide spectrum of performance due to the diversity of surfaces available. The user should test to determine specific performance. 2Data reported are actual values from the lots tested and may be higher than values published elsewhere in this Technical Data Sheet. 3 d = days 4 i = immersion -5- Scotch-Weld TM Epoxy Adhesives DP460 Off-White * DP460 NS 3MTM EPXTM Pneumatic Applicator Delivery Rates 200 ml Applicator - Maximum Pressure 58 psi Adhesive* 3MTM Scotch-WeldTM Epoxy Adhesive DP460 Off-White 6mm Nozzle gms/minute 10mm Nozzle gms/minute 31.1 132.0 *Tests were run at a temperature of 70F 2F (21C 1C) and at maximum applicator pressure. Handling/Application Information Directions for Use 3MTM Scotch-WeldTM Epoxy Adhesives DP460 Off-White and DP460 NS are supplied in dual syringe plastic duo-pak cartridges as part of the 3MTM EPXTM Applicator System. The duo-pak cartridges are supplied in 37 ml, 200 ml and 400 ml configurations. To use the 37 ml cartridge simply insert the duo-pak cartridge into the EPX applicator and start the plunger into the cylinders using light pressure on the trigger. Next, remove the duo-pak cartridge cap and expel a small amount of adhesive to be sure both sides of the duo-pak cartridge are flowing evenly and freely. If simultaneous mixing of Part A and Part B is desired, attach the EPX mixing nozzle to the duo-pak cartridge and begin dispensing the adhesive. With the 200 ml and 400 ml cartridges, the nozzle must be attached before dispensing any material to prevent unmixed adhesive from getting into the applicator cartridge holder. A small quantity of material should be discarded until uniform color, consistency of product and even flow is evident. When mixing Part A and Part B manually, the components must be mixed in the ratio indicated in the typical uncured properties section. Complete mixing of the two components is required to obtain optimum properties. Two-part mixing/proportioning/dispensing equipment is available for intermittent or production line use. These systems are ideal for line uses because of their variable shot size and flow rate characteristics and are adaptable to most applications. -6- Scotch-Weld TM Epoxy Adhesives DP460 Off-White * DP460 NS Surface Preparation The following surface preparations were used for substrates described in this Technical Data Sheet. A. Aluminum Etch Optimized FPL Etch - 3M (test method C-2803) 1. Alkaline degrease - Oakite 164 solution (9-11 oz./gallon water) at 190F 10F (88C 5C) for 10-20 minutes. Rinse immediately in large quantities of cold running water (3M test method C-2802). 2. Optimized FPL Etch Solution (1 liter): Material Amount Distilled Water 700 ml plus balance of liter (see below) Sodium Dichromate 28 to 67.3 grams Sulfuric Acid 287.9 to 310.0 grams Aluminum Chips 1.5 grams/liter of mixed solution To prepare 1 liter of this solution, dissolve sodium dichromate in 700 ml of distilled water. Add sulfuric acid and mix well. Add additional distilled water to fill to 1 liter. Heat mixed solution to 66 to 71C (150 to 160F). Dissolve 1.5 grams of 2024 bare aluminum chips per liter of mixed solution. Gentle agitation will help aluminum dissolve in about 24 hours. To FPL etch panels, place them in the above solution at 150 to 160F (66 to 71C) for 12 to 15 minutes. Note: Review and follow precautionary information provided by chemical suppliers prior to preparation of this etch solution. 3. Rinse immediately in large quantities of clear running tap water. 4. Dry - air dry approximately 15 minutes followed by force dry at 140F (60C) maximum for 10 minutes (minimum). 5. Both surface structure and chemistry play a significant role in determining the strength and permanence of bonded structures. It is therefore advisable to bond or prime freshly primed clean surfaces as soon as possible after surface preparation in order to avoid contamination and/or mechanical damage. Please contact your 3M sales representative for primer recommendations. B. Oakite Degrease Oakite 164 solutions (9-11 oz./gallon of water) at 190F 10F (88C 5C) for 2 minutes. Rinse immediately in large quantities of cold running water. C. MEK/Abrade/MEK Wipe surface with a methyl ethyl ketone (MEK) soaked swab, abrade and wipe with a MEK soaked swab.* Allow solvent to evaporate before applying adhesive. D. Isopropyl Alcohol Wipe Wipe surface with an isopropyl alcohol soaked swab.* Allow solvent to evaporate before applying adhesive. E. Isopropyl Alcohol/Abrade/Isopropyl Alcohol Wipe surface with an isopropyl alcohol soaked swab, abrade using clean fine grit abrasives, and wipe with an isopropyl alcohol soaked swab.* Then allow solvent to evaporate before applying adhesive. *Note: When using solvents, extinguish all ignition sources, including pilot lights, and follow the manufacturer's precautions and directions for use. -7- Scotch-Weld TM Epoxy Adhesives DP460 Off-White * DP460 NS Storage Store products at 60-80F (15-27C) or refrigerate for maximum shelf life. Shelf Life These products have a shelf life of 15 months in original containers. Precautionary Information Refer to Product Label and Material Safety Data Sheet for health and safety information before using this product. For additional health and safety information, call 1-800-364-3577 or (651) 737-6501. For Additional Information To request additional product information or to arrange for sales assistance, call toll free 1-800-362-3550 or visit www.3M.com/adhesives. Address correspondence to: 3M Industrial Adhesives and Tapes Division, Building 21-1W-10, 900 Bush Avenue, St. Paul, MN 55144-1000. Our fax number is 651-778-4244. In Canada, phone: 1-800-364-3577. In Puerto Rico, phone: 1-787-750-3000. In Mexico, phone: 52-70-04-00. 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. Warranty and Limited Remedy Unless stated otherwise in 3M's product literature, packaging inserts or product packaging for individual products, 3M warrants that each 3M product meets the applicable specifications at the time 3M ships the product. Individual products may have additional or different warranties as stated on product literature, package inserts or product packages. 3M MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE. User is responsible for determining whether the 3M product is fit for a particular purpose and suitable for user's application. If the 3M product is defective within the warranty period, your exclusive remedy and 3M's and seller's sole obligation will be, at 3M's option, to replace the product or refund the purchase price. Limitation of Liability Except where prohibited by law, 3M and seller will not be liable for any loss or damage arising from the 3M product, whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract, negligence or strict liability. ISO 9001 This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001 standards. 3 Industrial Business Industrial Adhesives and Tapes Division 3M Center, Building 21-1W-10, 900 Bush Avenue St. Paul, MN 55144-1000 Recycled Paper 40% pre-consumer 10% post-consumer -8- Printed in U.S.A. (c)3M 2004 78-6900-9780-9 (3/04)