TM Scotch-Weld Epoxy Adhesives DP125 Translucent and Gray Technical Data Product Description March 2019 3MTM Scotch-WeldTM Epoxy Adhesive DP125 Translucent is a faster curing version of the 3MTM Scotch-WeldTM Epoxy Adhesive 2216 Translucent B/A. The worklife and cure time has been reduced from hours and days for the Scotch-Weld epoxy adhesive 2216 Translucent B/A to minutes and hours. Final shear and peel strengths remain similar or even slightly improved compared to the Scotch-Weld epoxy adhesive 2216 Translucent. Scotch-Weld epoxy adhesive DP125 Gray is a filled, pigmented version of the Scotch-Weld epoxy adhesive DP125 Translucent and has similar performance and flexibility properties. Available in bulk containers as 3MTM Scotch-WeldTM Epoxy Adhesive 125 B/A Translucent and 125 B/A Gray. Features * 25 minute worklife * Flexible * Translucent or Gray * High peel and shear strength * Controlled flow (gray) * 1:1 mix ratio Typical Uncured Properties Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Base Resins Viscosity1, @ 80F Approximate Base (B) Accelerator (A) 3MTM ScotchWeldTM Epoxy Adhesive DP125 Translucent 3MTM ScotchWeldTM Epoxy Adhesive DP125 Gray Epoxy/Amine Epoxy/Amine 2,000-8,000 cps 22,000-33,000 cps 35,000-75,000 cps 45,000-65,000 cps Net Weight (Lbs./gal.) Base (B) Accelerator (A) 9.3-9.7 8.4-8.6 10.3-10.7 8.5-8.9 Color Base (B) Accelerator (A) Clear Amber Gray Amber Mix Ratio (B:A) By Volume By Weight 1:1 1.10:1 1:1 1.2:1 Worklife2 @ 73F 2 gram 20 gram 25 min. 18 min. 25 min. 15 min. Footnotes: Viscosity determined using 3M test method C-1d. Procedure involves Brookfield RVF, #7 spindle, 20 rpm and 80F. Measurement taken after 1 minute. 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 3MTM EPX Applicator mixing nozzle. 3MTM Scotch-WeldTM Epoxy Adhesives DP125 Translucent and Gray 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. Physical 3MTM Scotch-WeldTM 3MTM Scotch-WeldTM Epoxy Adhesive Epoxy Adhesive DP125 Translucent DP125 Gray Footnotes: 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 3MTM EPX Applicator mixing nozzle. 3. Tack-free time 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. 4. 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. Color Translucent Hardness (ASTM D 2240) Shore D Worklife2 Gray 55 70 20-30 minutes 20-30 minutes 2 hrs 2 hrs 2.5 hrs 2.5 hrs Full Cure Time5 7 days 7 days Elongation6 150% 120% 2500 psi 3300 psi 3MTM ScotchWeldTM Epoxy Adhesive DP125 Translucent 1% @ 164C 5% @ 301C 3MTM ScotchWeldTM Epoxy Adhesive DP125 Gray 1% @ 176C 5% @ 303C Tack-free Time3 Time to Handling Strength4 Tensile Strength6 Thermal 5. 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 aluminum-aluminum OLS. 6. Tensile and Elongation. Used procedure in 3M test method C-3094/ATSM D 882. Samples were 2 in. dumbbells with .0125 in. neck and .030 in. sample thickness. Separation rate was 2 inches per minute. Samples cured 2 hrs RT plus 2 hrs/160F. Weight Loss by Thermal Gravimetric Analysis (TGA)7 7. Weight loss by TGA reported as that temperature at which 5% weight loss occurs by TGA in air at 5C rise per minute per ASTM 1131-86. Glass Transition Temperature (Tg) by DCS9 Onset Mid-Point 3C 15C 12C 23C 8. TCE determined using TMA Analyzer using a heating rate of 10C per minute. Second heat values given. Thermal Conductivity10 (@ 110F on .250 in. samples) BTU - ft./ft.2 - hr. - F) Cal./sec. - cm - C) Watt/m - C .089 .37 x 10-3 .154 .087 .36 x 10-3 .151 Pass 5 cycles without cracking Pass 5 cycles without cracking 3MTM ScotchWeldTM Epoxy Adhesive DP125 Translucent 6.3 3MTM ScotchWeldTM Epoxy Adhesive DP125 Gray 6.3 0.14 0.13 765 volts/mil 680 volts/mil 1.2 x 1011 ohm-cm 1.0 x 1011 ohm-cm 9. Glass Transition Temperature (Tg) determined using DSC Analyzer with a heating rate of 20C per minute. Second heat values given. 10. Thermal conductivity determined using ASTM C177 and C-matic Instrument using 2 in. diameter samples. 11. Thermal shock resistance run per 3M test method C-3174. Involves potting a metal washer into a 2 in. x 0.5 in. thick section and cycling this test specimen to colder and colder temperatures. Thermal Coefficient of Expansion (TCE) by TMA8 ( x 10-6 units/unit/C) 112 (5-20C range) 98 (5-20C range) Below Tg 190 (65-140C range) 187 (65-140C range) Above Tg Thermal Shock Resistance11 Potted Washer Olyphant Test (3M Test Method C-3174) +100C [air] to -50C [liquid]) Electrical Dielectric Constant @ 1 KHZ @ 23C (ASTM D 150) Dissipation Factor @ 1 KHZ @ 23C (ASTM D 150) Dielectric Strength (ASTM D 149) Sample Thickness Approx. 30 mil Volume Resistivity (ASTM D 257) -2- 3MTM Scotch-WeldTM Epoxy Adhesives DP125 Translucent and Gray 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. The data was generated using the 3MTM EPX Applicator System equipped with an EPX applicator 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. Overlap Shear Strength (OLS) to12 (Bonds cured 24 hrs @ RT + 2 hrs 160F) Footnotes: 12. 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. The thickness of the bond line was 0.005-0.008 in. All strengths were measured at 70F except were noted. (Test per ASTM D 1002-72.) 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.; rubber, 0.125 in.; plastics, 0.125 in. Etched Aluminum Sanded Aluminum (60 grit) Cold Rolled Steel Wood, Fir Glass, Borosilicate Glass, +3MTM Scotch-WeldTM Primer 3901 Polycarbonate Acrylic Fiberglass ABS PVC Polypropylene 3MTM Scotch-WeldTM Epoxy Adhesive DP125 Translucent 2500 psi 1400 psi 1500 psi 700 psi 250 psi 200 psi 700 psi 420 psi 1200 psi 460 psi 500 psi 25 psi 3MTM Scotch-WeldTM Epoxy Adhesive DP125 Gray 3400 psi 2200 psi 1900 psi 900 psi 400 psi 250 psi 880 psi 550 psi 1800 psi 520 psi 750 psi 60 psi 3MTM ScotchWeldTM Epoxy Adhesive DP125 Translucent 100 psi 300 psi 1300 psi 1900 psi 2050 psi 3MTM ScotchWeldTM Epoxy Adhesive DP125 Gray 250 psi 500 psi 1700 psi 2300 psi 3300 psi 3MTM ScotchWeldTM Epoxy Adhesive DP125 Translucent 2300 psi 3300 psi 2600 psi 4600 psi 2100 psi 3MTM ScotchWeldTM Epoxy Adhesive DP125 Gray 4500 psi 5000 psi 3500 psi 5400 psi 3000 psi Rate of Strength Buildup (OLS on Etched Aluminum)12 Bonds tested after: 3 hrs @ RT 6 hrs @ RT 1 day @ RT 1 wk @ RT 1 mo @ RT Environmental Aging (OLS on Etched Aluminum)12 Bonds tested after: 24 hrs RT + 2 hrs @ 160F 24 hrs RT + 2 hrs @ 240F 1 wk RT + 1 wk @ 90F/90% RH 1 wk RT + 1 wk 248F 1 wk RT + 1 wk H2O Immersion -3- 3MTM Scotch-WeldTM Epoxy Adhesives DP125 Translucent and Gray 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. Overlap Shear Strength vs Temperature12 (Bonds cured 24 hr @ RT + 2 hrs @ 160F) 3MTM Scotch-WeldTM Epoxy Adhesive DP125 Translucent 3MTM Scotch-WeldTM Epoxy Adhesive DP125 Gray -67F 4000 psi 3400 psi 70F 2500 psi 4300 psi 120F 400 psi 700 psi 150F 190 psi 450 psi 180F 150 psi 400 psi Bonds tested at 180 Peel Strength vs Temperature13 (Bonds cured 24 hr @ RT + 2 hrs @ 160F) -67F 3MTM Scotch-WeldTM Epoxy Adhesive DP125 Translucent 3 piw 3MTM Scotch-WeldTM Epoxy Adhesive DP125 Gray 3 piw 70F 35 piw 35 piw 120F 10 piw 18 piw 150F 3 piw 3 piw 180F 2 piw 2 piw Solvent Resistance14 3MTM Scotch-WeldTM Epoxy Adhesive DP125 Translucent One Hour/One Month 3MTM Scotch-WeldTM Epoxy Adhesive DP125 Gray One Hour/One Month Acetone A/A A/A Isopropyl Alcohol A/A A/A Freon TF A/A A/A Freon TMC A/B A/B 1,1,1-Trichlorethane A/A A/A RMA Flux A/A A/A Key: A - Unaffected, B - Slight Attack, C - Moderate/Severe Attack Footnotes: 12. 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. The thickness of the bond line was 0.005-0.008 in. All strengths were measured at 70F except were noted. (Test per ASTM D 1002-72.) 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.; rubber, 0.125 in.; plastics, 0.125 in. 13. T-peel strengths were measured on 1 in. wide bonds at 73F. The testing jaw separation rate was 20 inches per minute. The substrates were 0.020 in. thick. (Tests per ASTM D 1876-61T.) 14. Solvent resistance was determined using cured (24 hrs RT + 2 hrs 160F) samples (1/2 in. x 4 in. x 1/8 in. 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. -4- 3MTM Scotch-WeldTM Epoxy Adhesives DP125 Translucent and Gray 3MTM EPX Pneumatic Applicator Delivery Rates 48.5/50 ml Applicator - Maximum Pressure 50 psi 1/4 in. Nozzle gms/minute Adhesive* 3MTM Scotch-WeldTM Epoxy Adhesive DP125 Translucent 3MTM Scotch-WeldTM Epoxy Adhesive DP125 Gray 63.6 26.4 *Tests were run at a temperature of 70F 2F (21C 1C) and at maximum applicator pressure. Handling/Curing Information Directions For Use 1. For high strength structural bonds, paints, 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 section on surface preparation. 2. Use gloves to minimize skin contact. Do not use solvents for cleaning hands. 3. Mixing. For Duo Pak Cartridges 3MTM Scotch-WeldTM Epoxy Adhesives DP125 Translucent and Gray are supplied in a dual syringe plastic duo-pak cartridge as part of the 3MTM EPX Applicator System. To use, 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 duopak 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 EPX applicator mixing nozzle to the duo-pak cartridge and begin dispensing the adhesive. 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 20 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 7 days @ 75F (24C). 7. Keep parts from moving during cure. Contact pressure 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.* *Note: When using solvents, extinguish all ignition sources, including pilot lights, and follow manufacturer's precautions and directions for use. Adhesive Coverage (typical): A 0.005 in. thick bondline will yield a coverage of 320 sq. ft./gallon. -5- 3MTM Scotch-WeldTM Epoxy Adhesives DP125 Translucent and Gray 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 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. Alkaline Degrease: Oakite 164 solution (9-11 oz./gallon water) at 190F 10F for 10-20 minutes. Rinse immediately in large quantities of cold running water. 2. Acid Etch: Place panels in the following solution for 10 minutes at 150F 5F . 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 3. Rinse: Rinse panels in clear running tap water. 4. Dry: Air dry 15 minutes; force dry 10 minutes at 150F 10F. 5. If primer is to be used, it should be applied within 4 hours after surface preparation. Note: Read and follow supplier's environmental, health, and safety documentation for these chemicals prior to preparation of this solution. 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.* 2. Apply a thin coating (0.0001 in. or less) of primer such as 3MTM Scotch-WeldTM Metal Primer EC3901 to the glass surfaces to be bonded and allow the primer to dry before bonding. *Note: When using solvents, extinguish all ignition sources, including pilot lights, and follow manufacturer's precautions and directions for use. Application Equipment Suggestions For small or intermittent applications the 3MTM EPX Applicator System is a convenient method of application. For larger applications these products may be applied by use of flow equipment. Two part meter/mixing/proportioning/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. -6- 3MTM Scotch-WeldTM Epoxy Adhesives DP125 Translucent and Gray Storage Store products at 60-80F (16-27C) for maximum shelf life. Shelf Life These products have a shelf life of 24 months in their unopened 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. 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. Product Selection and 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. As a result, customer is solely responsible for evaluating the product and determining whether it is appropriate and suitable for customer's application, including conducting a workplace hazard assessment and reviewing all applicable regulations and standards (e.g., OSHA, ANSI, etc.). Failure to properly evaluate, select, and use a 3M product and appropriate safety products, or to meet all applicable safety regulations, may result in injury, sickness, death, and/or harm to property. Warranty, Limited Remedy, and Disclaimer Unless a different warranty is specifically stated on the applicable 3M product packaging or product literature (in which case such warranty governs), 3M warrants that each 3M product meets the applicable 3M product specification at the time 3M ships the product. 3M MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR ARISING OUT OF A COURSE OF DEALING, CUSTOM, OR USAGE OF TRADE. If a 3M product does not conform to this warranty, then the sole and exclusive remedy is, at 3M's option, replacement of the 3M product or refund of the purchase price. 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. This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001: 2000 standards. 3M and Scotch-Weld are trademarks of 3M Company. Printed in U.S.A. (c)3M 2009 78-6900-9866-6 (12/09) 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/structuraladhesives -7-