3 Scotch-WeldTM Epoxy Adhesives DP105 Clear Technical Data Product Description October 2017 3MTM Scotch-WeldTM Epoxy Adhesive DP105 Clear is available in larger containers like 3MTM Scotch-WeldTM Epoxy Adhesive 105 B/A Clear. 3MTM Scotch-WeldTM Epoxy Adhesive DP105 Clear is a fast setting, very flexible 1:1 mix ratio epoxy adhesive/sealant. Its flexibility when cured makes it ideal for applications involving dissimilar surfaces where thermal coefficient of expansion may be a problem. It is also unique in that it retains its clear, colorless properties longer than most 5 minute epoxies. Features * 4 minute worklife * High peel strength * Flexible * 1:1 mix ratio * Clear Typical Uncured Physical Properties Footnotes: 1. Viscosity determined using 3M test method C-1d. Procedure involves Brookfield RVF, #7 spindle, 20 rpm and 80F (27C). Measurement taken after 1 minute rotation. 2. Worklife determined using 3M test method C-3180. Procedure involves periodically measuring a 2 gram mixed mass for self-leveling and wetting properties. This time will also approximate the usable worklife in an EPXTM mixing nozzle. Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. 3MTM Scotch-WeldTM Epoxy Adhesive DP105 Clear Product Base Resins Epoxy/Mercaptan Color Base (B) Accelerator (A) Clear Clear Net Weight (Lbs./Gallon) Base (B) Accelerator (A) 9.1 - 9.5 9.4 - 9.8 Viscosity1, Approximate @ 80F (27C) Base (B) Accelerator (A) 1,000 - 5,000 cps 8,000 - 16,000 cps Mix Ratio (B:A) By Volume By Weight Worklife2 @ 73F (23C) 2 gram 20 gram 1:1 1:0.97 5 minutes 4 minutes 3MTM Scotch-WeldTM Epoxy Adhesives DP105 Clear Typical Cured Properties Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. 3MTM Scotch-WeldTM Epoxy Adhesive DP105 Clear Footnotes: 1. Worklife determined using 3M test method C-3180. Procedure involves periodically measuring a 2 gram mixed mass for self-leveling and wetting properties. This time will also approximate the usable worklife in an EPXTM mixing nozzle. 2. Tack-free determined per 3M test method C-3173. Involves dispensing 0.5 gram amount of adhesive onto substrate and testing periodically for no adhesive transfer to metal spatula. 3. Handling strength determined per 3M test method C-3179. Time to handling strength taken to be that required to achieve a 50 psi OLS strength using aluminum substrates. 4. The cure time is defined as that time required for the adhesive to achieve a minimum of 80% of the ultimate strength as measured by aluminumaluminum OLS. 5. Tensile and Elongation. Used procedure in 3M test method C3094/ASTM D 882. Samples were 2" dumbbells with .0125" neck and .030" sample thickness. Separation rate was 2 inches per minute. Samples cured 2 hrs RT plus 2 hrs/160F (71C). 6. Weight loss by TGA reported as that temperature at which 5% weight loss occurs by TGA in air at 5C (41F) rise per minute per ASTM 1131-86. 7. TCE determined using Dupont TMA Analyzer using a heating rate of 50F (10C) per minute. Second heat values given. 8. Glass Transition Temperature (Tg) determined using Perkin Elmer DSC Analyzer with a heating rate of 68F (20C) per minute. Second heat values given. 9. Thermal conductivity determined using ASTM C177 and C-matic Instrument using 2 inch diameter samples. 10. Thermal shock resistance run per 3M test method C-3174. Involves potting a metal washer into a 2" x 0.5" thick section and cycling this test specimen to colder and colder temperatures. Physical Transparency and Color Hardness Shore D (ASTM D 2240) Clear and colorless in thin bondlines 25-30 Worklife2 3-4 minutes Tackfree Time3 10 minutes Time to Handling Strength4 20 min. @ 23C (73F) Cure Time5 48 hrs. @ 23C (73F) Elongation6 120% Tensile Strength6 600 psi Thermal Weight Loss by Thermal Gravimetric Analysis (TGA)7 1% @ 117C (243F) 5% @ 289C (552F) Thermal Coefficient of Expansion (TCE) by TMA8 (x 10-6 units/unit/C) Below Tg Above Tg -- 181 (40-140C range) Glass Transition Temperature (Tg) by DSC9 Onset Mid-Point Thermal Conductivity10 (@ 110F on .250" samples) BTU-ft./ft.2 - hr.-F Cal./sec -cm-C Watt/m-C Thermal Shock Resistance11 Potted Washer Olyphant Test (3M/AdhD Test Method C-3174 +100C [air] to -50C [liquid]) 8C (46F) 15C (59F) .085 .35 x 10-3 .147 Pass 5 cycles without cracking Electrical Dielectric Constant @ 1 KHz @ 23C (73F) [ASTM D 150] 9.2 Dissipation Factor @ 1 KHz @ 23C (73F) [ASTM D 150] 0.22 Dielectric Strength (ASTM D 149) Sample Thickness Approx. 30 mil 465 volts/mil - 2 - D 257) Volume Resistivity (ASTM 1.5 x 1010 ohm-cm 3MTM Scotch-WeldTM Epoxy Adhesives DP105 Clear Typical Adhesive Performance Characteristics The following product performance data was obtained in the 3M laboratory under the conditions specified. The following data show typical results obtained with the 3MTM Scotch-WeldTM Adhesives when applied to properly prepared substrates, cured, and tested according to the specifications indicated. This data was generated using the 3MTM ScotchWeldTM EPXTM Applicator System equipped with an EPXTM static mixer, according to manufacturer's directions. Thorough hand mixing should afford comparable results. Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Footnotes: 11. Overlap shear (OLS) strengths were measured on 1" wide 1/2" overlap specimens. These bonds were made individually using 1" x 4" pieces of substrate. The thickness of the bond line was 0.005-0.008". All strengths were measured at 70F (21C) except where noted. (Test per ASTM D 1002-72.) The separation rate of the testing jaws was 0.1" per minute for metals, 2" per minute for plastics and 20" per minute for rubbers. The thickness of the substrates were: steel, 0.060"; other metals, 0.05-0.064"; rubber, 0.125"; plastics, 0.125". 3MTM Scotch-WeldTM Epoxy Adhesive DP105 Clear Overlap Shear (OLS) to12 (Bonds aged 24 hrs @ RT + 2 hrs @ 160F (71C) Etched Aluminum 2000 psi Sanded Aluminum (60 grit) 1500 psi Cold Rolled Steel 1300 psi Wood, Fir 300 psi Glass, Borosilicate 200 psi Glass, +3M 3901 Primer 250 psi Polycarbonate 400 psi Acrylic 250 psi Fiberglass 1400 psi ABS 300 psi PVC 520 psi Polypropylene 80 psi Rate of Strength Buildup (OLS on Etched Aluminum)12 Bonds tested after: 1 hr @ RT 250 psi 6 hrs @ RT 500 psi 24 hrs @ RT 1000 psi 7 days @ RT 2000 psi 1 mo @ RT 2000 psi Environmental Aging (OLS on Etched Aluminum)12 Bonds tested after: 24 hrs RT + 2 hrs @ 160F (71C) 2000 psi 24 hrs RT + 2 hrs @ 240F (116C) 2200 psi 1 wk RT + 1 wk @ 90F/90% RH 1800 psi 1 wk RT + 1 wk 248F (120C) 3000 psi 1 wk RT + 1 wk H2O Immersion 2000 psi -3- 3MTM Scotch-WeldTM Epoxy Adhesives DP105 Clear Typical Adhesive Performance Characteristics (continued) Footnotes: 12. Overlap shear (OLS) strengths were measured on 1" wide 1/2" overlap specimens. These bonds were made individually using 1" x 4" pieces of substrate. The thickness of the bond line was 0.005-0.008". All strengths were measured at 70F (21C) except where noted. (Tests per ASTM D 1002-72). The separation rate of the testing jaws was 0.1" per minute for metals, 2" per minute for plastics and 20" per minute for rubbers. The thickness of the substrates were: steel, 0.060"; other metals, 0.05-0.064"; rubber, 0.125"; plastics, 0.125". 13. T-peel strengths were measured on 1" wide bonds at 73F (23C). The testing jaw separation rate was 20 inches per minute. The substrates were 0.020" thick. (Tests per ASTM D 1876-61T). 14. Solvent resistance was determined using cured (24 hrs RT + 2hrs 160F [71C]) samples (1/2" x 4" x 1/8" thickness) immersed in the test solvent for 1 hour and 1 month. After the allotted period of time the sample was removed and visually examined for surface attack as compared to the control. Key: A - Unaffected - no change to color or surface texture. B - Slight attack - noticeable swelling of surface. C - Moderate/severe attack - extreme swelling of surface. 15. Exotherm determined using the stated mass mixed for 1 minute and then by electronic thermocouple measuring the peak temperature and time to that temperature. Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. 3MTM Scotch-WeldTM Epoxy Adhesive DP105 Clear Overlap Shear Strength vs Temperature12 (Bonds cured 24 hr @ RT + 2 hrs @ 160F [71C]) Bonds tested at: -67F (-53C) 150F (66C) 3500 psi 2000 psi 400 psi 250 psi 180F (82C) 150 psi 70F (21C) 120F (49C) 180 Peel Strength vs Temperature13 (Bonds cured 24 hr @ RT + 2 hrs @ 160F [71C]) Bonds tested at: -67F (-53C) 3.0 piw 70F (21C) 35.0 piw 120F (49C) 5.0 piw 150F (66C) 2 .0 piw 180F (82C) 1.0 piw Solvent Resistance14 One Hour/One Month Acetone A/A Isopropyl Alcohol A/A Freon TF A/A Freon TMC A/B 1,1,1 Trichloroethane A/A RMA Flux A/A Key: A - Unaffected, B - Slight Attack, C - Moderate/Severe Attack Exotherm15 Max. Temp/Time to Reach 2 gram mass 98F (37C)/5 min. 20 gram mass 230F (110C)/3 min. -4- 3MTM Scotch-WeldTM Epoxy Adhesives DP105 Clear Handling/Curing Information Directions for Use 1. For high strength structural bonds, paint, oxide films, oils, dust, mold release agents and all other surface contaminants must be completely removed. However, the amount of surface preparation directly depends on the required bond strength and the environmental aging resistance desired by user. For specific surface preparations on common substrates, see the following section on Surface Preparation. 2. Uses gloves to minimize skin contact. Do not use solvents for cleaning hands. 3. Mixing For Duo-Pak Cartridges 3MTM Scotch-WeldTM Epoxy Adhesive DP105 Clear is supplied in a dual syringe plastic Duo-Pak cartridge as part of the 3MTM Scotch-WeldTM EPXTM Applicator system. To use, simply insert the Duo-Pak cartridge into the EPXTM 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 automatic mixing of Part A and Part B is desired, attach the EPXTM mixing nozzle to the Duo- Pak cartridge and begin dispensing the adhesives. For hand mixing, expel the desired amount of adhesive and mix thoroughly. Mix approximately 15 seconds after uniform color is obtained. For Bulk Containers Mix thoroughly by weight or volume in the proportions specified in the Typical Uncured Properties section. Mix approximately 15 seconds after uniform color is obtained. 4. For maximum bond strength apply adhesive evenly to both surfaces to be joined. 5. Application to the substrates should be made within 3 minutes. Larger quantities and/or higher temperatures will reduce this working time. 6. Join the adhesive coated surfaces and allow to cure at 60F (16C) or above until completely firm. Heat up to 200F (93C), will speed curing. These products will cure in 48 hours @ 75F (24C). 7. Keep parts from moving during cure. Contact pressure is necessary. Maximum shear strength is obtained with a 3-5 mil bond line. 8. Excess uncured adhesive can be cleaned up with ketone type solvents.* Adhesive Coverage: A 0.005 in. thick bondline will yield a coverage of 320 sq. ft./ gallon. *Note: When using solvents, extinguish all ignition sources and follow the manufacturer's precautions and directions for use. -5- 3MTM Scotch-WeldTM Epoxy Adhesives DP105 Clear Surface Preparation For high strength structural bonds, paint, oxide films, oils, dust, mold release agents and all other surface contaminants must be completely removed. However, the amount of surface preparation directly depends on the required bond strength and the environmental aging resistance desired by the user. The following cleaning methods are suggested for common surfaces: Steel: 1. Wipe free of dust with oil-free solvent such as acetone, isopropyl or alcohol solvents.* 2. Sandblast or abrade using clean fine grit abrasives. 3. Wipe again with solvent to remove loose particles. 4. If a primer is used, it should be applied within 4 hours after surface preparation. Aluminum: 1. Vapor Degrease: 3MTM NovecTM condensing vapors for 5-10 minutes. 2. 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. 3. Acid Etch: Place panels in the following solution for 10 minutes at 150F 5F (66C 2C). Sodium Dichromate 4.1 - 4.9 oz./gallon Sulfuric Acid, 66Be 38.5 - 41.5 oz./gallon 2024-T3 aluminum (dissolved) 0.2 oz./gallon minimum Tap Water as needed to balance 4. Rinse: Rinse panels in clean running tap water. 5. Dry: Air dry 15 minutes; force dry 10 minutes at 150F 10F (66C 5C). 6. If primer is to be used, it should be applied within 4 hours after surface preparation. Plastics/Rubber: 1. Wipe with isopropyl alcohol.* 2. Abrade using fine grit abrasives. 3. Wipe with isopropyl alcohol.* Glass: 1. Solvent wipe surface using acetone or MEK.* *Note: When using solvents, extinguish all ignition sources and follow the manufacturer's precautions and directions for use. -6- 3MTM Scotch-WeldTM Epoxy Adhesives DP105 Clear Surface Preparation (continued) * For small or intermittent applications the 3MTM Scotch-WeldTM EPXTM Applicator is a convenient method of application. * For larger applications, these products may be applied by use of flow equipment. * Two-part meter/mixing/dispensing equipment is available for intermittent or production line use. These systems may be desirable because of their variable shot size and flow rate characteristics and are adaptable to many applications. -7- 3MTM Scotch-WeldTM Epoxy Adhesives DP105 Clear Storage and Shelf Life Store 3MTM Scotch-WeldTM Epoxy Adhesive DP-105 Clear at 60-80F (15-27C) for maximum shelf life. These epoxy adhesive products have a shelf life of 2 years in their unopened bulk containers and 15 months in Duo-Pak containers. Shelf life is determined from the date of shipment from 3M. 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. Technical Information The technical information, guidance, and other statements contained in this document or otherwise provided by 3M are based upon records, tests, or experience that 3M believes to be reliable, but the accuracy, completeness, and representative nature of such information is not guaranteed. Such information is intended for people with knowledge and technical skills sufficient to assess and apply their own informed judgment to the information. No license under any 3M or third party intellectual property rights is granted or implied with this information. 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Limitation of Liability Except for the limited remedy stated above, and except to the extent prohibited by law, 3M will not be liable for any loss or damage arising from or related to the 3M product, whether direct, indirect, special, incidental, or consequential (including, but not limited to, lost profits or business opportunity), regardless of the legal or equitable theory asserted, including, but not limited to, 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. Industrial Adhesives and Tapes Division 3M Center, Building 225-3S-06 St. Paul, MN 55144-1000 800-362-3550 * 877-369-2923 (Fax) 3M, Scotch-Weld, Novec and EPX are trademarks of 3M Company. (c)3M 2017 E 78-6900-9675-1 www.3M.com/structuraladhesives -8-