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Description for 3M DP825 Scotch-Weld Acrylic Adhesive
Two-part, 1:1 mix ratio, toughened acrylic structural adhesives. Exhibit excellent shear and peel strengths.Chemical Resistance Acetone, Chemical Resistance: MEK (methyl ethyl ketone), Chemical Resistance: Fluid Resistance: Tap water, Bleach solution, IPA (isopropyl alcohol), Unleaded gasoline, Diesel fuel, Antifreeze, Toluene Application Type Bond 1 Part or 2 Part 2-Part Material Form Liquid Substrate Aluminum etched, Ceramics, Green Fiberglass Reinforced Plastic, Glass, Many metals, Most plastics, Rubber, Cold-Rolled Steel, Wood, Stainless Steel, Aluminum abraded, Cold-Rolled Steel – slightly oily, Aluminum bare, Cold-Rolled Steel (CRS) – solvent cleaned Manufacturer 3M Chemistry Acrylic Cure Method 2-Part Cure Cure Temperature (°C) 23 Cure Time (min) 240 to 1,440 Viscosity (cPs) Non-sag Color Pale yellow High Temperature Resistance (°C) 24, 49, 82 Low Temperature Resistance (°C) -55 -
Technical Data for 3M DP825 Scotch-Weld Acrylic Adhesive
Overview
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Chemical Resistance
- Chemical Resistance : Fluid Resistance : Water Resistance - Tap water
- Chemical Resistance - Bleach solution, IPA (isopropyl alcohol), Unleaded gasoline, Diesel fuel, Antifreeze, Toluene, Acetone
- Chemical Resistance : Relative Solvent Resistance - MEK (methyl ethyl ketone)
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Application Type
- Adhesive - Bond
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1 Part or 2 Part
- 2-Part
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Material Form
- Liquid
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Substrate
- Ceramic - Ceramics
- Glass
- Metal - Many metals
- Aluminum - Aluminum etched, Aluminum abraded, Aluminum bare
- Steel - Cold-Rolled Steel, Cold-Rolled Steel – slightly oily, Cold-Rolled Steel (CRS) – solvent cleaned
- Plastic - Most plastics
- Rubber
- Wood
- Composites - Green Fiberglass Reinforced Plastic
- Stainless Steel
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Chemistry
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Cure Method
- 2-Part Cure
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Color
- Yellow - Pale yellow
Specifications
Cure Specs
Cure Temperature (°C) 23 Cure Time (min) 240 to 1,440 Viscosity (cPs) Non-sag Fixture or Handling Strength Time (min) 25 to 35 Test Method Set Time (min) 1,440 Test Method Work / Pot Time (min) 25, 24 to 26 Test Method Mix Ratio 1:1 (by volume), 1:1 (by weight) Bond Strength
Structural/Load-Bearing Structural General Bond Strength (psi) 30, 1,915, 3,800, 4,305, 4,300, 4,515 Test Method Peel Strength (piw) Excellent, 28 Test Method Shear Strength (psi) Excellent, 3,850, 3,925, 4,100, 3,025, 2,600, 3,875, 2,625, 950, 1,400, 1,025, 1,050, 4,800, 6,800, 2,175, 4,850, 3,825, 2,525, 4,400, 4,650, 800, 2,675, 4,475, 2,625, 1,000 Test Method Material Resistance
High Temperature Resistance (°C) 24, 49, 82 Low Temperature Resistance (°C) -55 Hardness
Shore D Hardness 70 Test Method Business Information
Shelf Life Details Stroage: Store product in cool, dry area where temperature range is 70°F (21°C). Refrigerated storage 40-60°F (4-16°) is recommended, but do not freeze.;3M™ Scotch-Weld™ Acrylic Adhesives DP807, DP812, and DP825 have a shelf life of 12 months in unopened original containers kept at recommended storage. Shelf Life Temperature (°F) 70, 104 to 140 Shelf Life (mon) 12 -
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Best Practices for 3M DP825 Scotch-Weld Acrylic Adhesive
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Surface Preparation
For high strength structural bonds, paint, oxide films, oils, dust, mold release agents and all other surface contaminants must me completely removed. The amount of surface preparation depends on the required bond strength, environmental aging resistance desired by the user.
The following cleaning methods are suggested for common surfaces: Steel: Wipe free of dust with oil-free solvent such as acetone or isopropyl alcohol solvents.
Sandblast or abrade using clean fine grit abrasives.
Wipe again with solvent to remove loose particles
If a primer is used, it should be applied within 4 hours after surface preparation. If 3M™ Scotch-Weld™ Structural Adhesive Primer EC1945 B/A is used, apply a thin coating (0.5 mils or 0.013 mm) on the metal surfaces to be bonded, air dry for 10 minutes, then cure for 30 minutes at 180°F (82°C) prior to bonding.
Aluminum: Alkaline degrease: Oakite 164 solution (9-11 oz./gallon water) at 190°F ± 10°F (88°C ± 5°C) for 10-20 minutes. Rinse immediately in large quantities of cold running water.
Acid etch: place panels in the following solution for 10 minutes at 150°F ± 5°F (66°C ± 2°C) Sodium dichromate 4.1 - 4.9 oz./gallon, Sulfuric acid, 66°Be 38.5 - 41.5 oz./gallon, 2024-T3 aluminum (dissolved) 0.2 oz./gallon minimum Tap water as needed for balance
Rinse: rinse panels in clear running tap water
Dry: air dry for 15 minutes
force dry for 10 minutes at 190°F ± 10°F (88°C ± 5°C).
If primer is to be used, it should be applied within 4 hours after surface preparation.
Plastics/Rubber: Wipe with isopropyl alcohol .
Abrade using fine grit abrasives.
Wipe with isopropyl alcohol .
Glass:Solvent wipe surface using acetone or MEK .
Apply a thin coating (0.0001 in. or less) of 3M™ Scotch-Weld™ Metal Primer EC3901 to the glass surfaces to be bonded and allow the primer to dry before bonding.
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Application
For Duo-Pak Cartridges: 3M™ Scotch-Weld™ Acrylic Adhesives DP807, DP812 and DP825 are supplied in a dual syringe, plastic duo-pak cartridge as part of the 3M™ 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 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 EPX 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 a uniform color is obtained.
For Bulk Containers: Mix thoroughly by weight or volume in the proportions specified on the product label or in the typical uncured properties section. Mix approximately 15 seconds after a uniform color is obtained.
Once 3M™ Scotch-Weld™ Acrylic Adhesive has been applied to a surface, it is best to join the two mating surfaces together as soon as possible or within the applied open time. The reason for this is that beyond the applied open time, Scotch-Weld acrylic adhesive may begin to form a thin “skin” over the exposed surface. If left exposed long enough, a thick enough “skin” may form which will inhibit the proper wetting needed to achieve maximum strength.
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Mixing
For Duo-Pak Cartridges: 3M™ Scotch-Weld™ Acrylic Adhesives DP807, DP812 and DP825 are supplied in a dual syringe, plastic duo-pak cartridge as part of the 3M™ 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 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 EPX 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 a uniform color is obtained.
For Bulk Containers: Mix thoroughly by weight or volume in the proportions specified on the product label or in the typical uncured properties section. Mix approximately 15 seconds after a uniform color is obtained.
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Curing
Join the adhesive coated surfaces and allow to cure at 60°F (16°C) or above until completely firm. Heat up to 120°F - 150°F (49°C - 66°C) will also speed curing. Scotch-Weld acrylic adhesives will fully cure in 24 hours @ 75°F (24°C)
Keep parts from moving during cure. Apply contact pressure if necessary. Maximum shear strength is obtained with a 3-5 mil bond line
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Clean-Up
Excess uncured adhesive can be cleaned up with ketone type solvents.
When using solvents, extinguish all ignition sources, including pilot lights, and follow the manufacturer’s precautions and directions for use.
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Comparable Materials for 3M DP825 Scotch-Weld Acrylic Adhesive
Spec Engine® Results
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Fixture or Handling Strength Time Test Methods
Fixture or Handling Strength Time | Fixture-Handling Strength Test Method |
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25 to 35 min | Time to achieve approximate 50 psi Overlap Shear Strength (OLS) when cured at (73°F) 23°C. |
Set Time Test Methods
Set Time | Set Temperature |
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1,440 min | 23°C |
Work / Pot Time Test Methods
Work / Pot Time | Test Method | Temperature |
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25 min | ||
24 to 26 min | Approximate time during which material can remain in a mixer nozzle and still be expelled without undue force on the applicator | 23°C |
General Bond Strength Test Methods
General Bond Strength | Cure Temperature | Substrate | Test Time | Test Temperature | Test Method |
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30 psi | 24°C | Etched Aluminum | 15 min | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute. |
1,915 psi | 24°C | Etched Aluminum | 20 min | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute. |
3,800 psi | 24°C | Etched Aluminum | 60 min | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute. |
4,305 psi | 24°C | Etched Aluminum | 120 min | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute. |
4,300 psi | 24°C | Etched Aluminum | 240 min | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute. |
4,515 psi | 24°C | Etched Aluminum | 1,440 min | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute. |
Peel Strength Test Methods
Peel Strength | Substrate | Test Time | Test Temperature | Test Method |
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Excellent | ||||
28 piw | Etched Al / Etched Al | 10,080 min | 23°C | Aluminum/aluminum bonds tested per 3M Test method C-439 @ 20 inches/minute at 73°F (23°C), substrates of 1" wide x 0.020" thick and 1" wide x 0.063" thick and adhesive bond line thickness of approx. 0.017" |
Shear Strength Test Methods
Shear Strength | Type | Cure Time | Cure Temperature | Cure Humidity | Substrate | Chemical | Test Time | Test Temperature | Test Method |
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Excellent | |||||||||
3,850 psi | Overlap Shear Strength | 10,080 min | 23°C | 50 % | Aluminum – etched | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" pieces of substrates. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before tested. The separation rate of the testing jaws was 0.1 inch per minute for metals and 2 inches per minute for plastics, Adhesive failure | ||
3,925 psi | Overlap Shear Strength | 10,080 min | 23°C | 50 % | Aluminum – abraded, 150 grit sandpaper | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" pieces of substrates. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before tested. The separation rate of the testing jaws was 0.1 inch per minute for metals and 2 inches per minute for plastics, Cohesive failure | ||
4,100 psi | Overlap Shear Strength | 10,080 min | 23°C | 50 % | Aluminum – bare | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" pieces of substrates. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before tested. The separation rate of the testing jaws was 0.1 inch per minute for metals and 2 inches per minute for plastics, Adhesive failure | ||
3,025 psi | Overlap Shear Strength | 10,080 min | 23°C | 50 % | Cold-Rolled Steel (CRS) – solvent cleaned | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" pieces of substrates. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before tested. The separation rate of the testing jaws was 0.1 inch per minute for metals and 2 inches per minute for plastics, Adhesive failureOverlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" pieces of substrates. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before tested. The separation rate of the testing jaws was 0.1 inch per minute for metals and 2 inches per minute for plastics, Cohesive failure | ||
2,600 psi | Overlap Shear Strength | 10,080 min | 23°C | 50 % | Cold-Rolled Steel – slightly oily | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" pieces of substrates. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before tested. The separation rate of the testing jaws was 0.1 inch per minute for metals and 2 inches per minute for plastics, Adhesive failure | ||
3,875 psi | Overlap Shear Strength | 10,080 min | 23°C | 50 % | Stainless Steel | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" pieces of substrates. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before tested. The separation rate of the testing jaws was 0.1 inch per minute for metals and 2 inches per minute for plastics, Adhesive failure | ||
2,625 psi | Overlap Shear Strength | 10,080 min | 23°C | 50 % | Green Fiberglass Reinforced Plastic | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" pieces of substrates. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before tested. The separation rate of the testing jaws was 0.1 inch per minute for metals and 2 inches per minute for plastics, Substrate failure | ||
950 psi | Overlap Shear Strength | 10,080 min | 23°C | 50 % | Acrylic | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" pieces of substrates. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before tested. The separation rate of the testing jaws was 0.1 inch per minute for metals and 2 inches per minute for plastics, Substrate failure | ||
1,400 psi | Overlap Shear Strength | 10,080 min | 23°C | 50 % | Polyvinylchloride (PVC) | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" pieces of substrates. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before tested. The separation rate of the testing jaws was 0.1 inch per minute for metals and 2 inches per minute for plastics, Substrate failure | ||
1,025 psi | Overlap Shear Strength | 10,080 min | 23°C | 50 % | Polycarbonate (PC) | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" pieces of substrates. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before tested. The separation rate of the testing jaws was 0.1 inch per minute for metals and 2 inches per minute for plastics, Substrate failure | ||
1,050 psi | Overlap Shear Strength | 10,080 min | 23°C | 50 % | Acrylonitrile Butadiene Styrene (ABS) | 23°C | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute | ||
4,800 psi | Overlap Shear Strength | 10,080 min | 20 to 25°C Room Temperature | 50 % | Etched Aluminum | Control (no immersion) | 604,800 sec | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute | |
6,800 psi | Overlap Shear Strength | 66°C | 50 % | Etched Aluminum | 604,800 sec | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C)except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute | |||
2,175 psi | Overlap Shear Strength | 66°C | 50 % | Etched Aluminum | Tap water | 604,800 sec | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute | ||
4,850 psi | Overlap Shear Strength | 50 % | Etched Aluminum | 20% Bleach solution | 604,800 sec | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute | |||
3,825 psi | Overlap Shear Strength | 50 % | Etched Aluminum | IPA (isopropyl alcohol) | 604,800 sec | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute | |||
2,525 psi | Overlap Shear Strength | 50 % | Etched Aluminum | Unleaded gasoline | 604,800 sec | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute | |||
4,400 psi | Overlap Shear Strength | 50 % | Etched Aluminum | Diesel fuel | 604,800 sec | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute | |||
4,650 psi | Overlap Shear Strength | 50 % | Etched Aluminum | 50% Antifreeze | 604,800 sec | Overlap Shear (ASTM D-1002-64, 3M Test Method C-236) strength was measured on 1" wide x 1/2" overlap specimen. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at 73°F (23°C) except when noted, and samples were allowed to cure at 75°F (24°C) and approximately 50% RH for 1 week before immersed. The separation rate of the testing jaws was 0.1 inch per minute | |||
800 psi | Overlap Shear Strength | 50 % | Etched Aluminum | Toluene | 604,800 sec | Overlap Shear (ASTM D1002-64, 3M Test Method C-236) strength was measured on 1 in. wide x 1/2 in. overlap specimens. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". Bonds were allowed to cured for 7 days @ 73°F (23°C) and approximately 50% RH before tested. The separation rate of the testing jaws was 0.1 inch per minute. | |||
2,675 psi | Overlap Shear Strength | 10,080 min | -55°C | 50 % | Etched Aluminum | MEK (methyl ethyl ketone) | -55°C | Overlap Shear (ASTM D1002-64, 3M Test Method C-236) strength was measured on 1 in. wide x 1/2 in. overlap specimens. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". Bonds were allowed to cured for 7 days @ 73°F (23°C) and approximately 50% RH before tested. The separation rate of the testing jaws was 0.1 inch per minute. | |
4,475 psi | Overlap Shear Strength | 10,080 min | 24°C | 50 % | Etched Aluminum | Acetone | 24°C | Overlap Shear (ASTM D1002-64, 3M Test Method C-236) strength was measured on 1 in. wide x 1/2 in. overlap specimens. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". Bonds were allowed to cured for 7 days @ 73°F (23°C) and approximately 50% RH before tested. The separation rate of the testing jaws was 0.1 inch per minute. | |
2,625 psi | Overlap Shear Strength | 10,080 min | 49°C | 50 % | Etched Aluminum | 49°C | Overlap Shear (ASTM D1002-64, 3M Test Method C-236) strength was measured on 1 in. wide x 1/2 in. overlap specimens. These bonds were made individually using 1" x 4" coupons. The thickness of the adhesive bond line was approximately 0.005". Bonds were allowed to cured for 7 days @ 73°F (23°C) and approximately 50% RH before tested. The separation rate of the testing jaws was 0.1 inch per minute. | ||
1,000 psi | Overlap Shear Strength | 10,080 min | 82°C | 50 % | Etched Aluminum | 82°C |
Shore D Hardness Test Methods
Shore D Hardness | Shore Hardness Test Method |
---|---|
70 | ASTM D2240. Specimen were cured for a minimum of 24 hours @ 73°F (23°C) before tested |

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