3M™ Scotch-Weld™ Epoxy Adhesive DP420
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Details
Highlights
- High peel and shear strength maintains lasting bond at high and low temperatures
- Toughened for impact and fatigue resistance
- 20 minute work life provides time for positioning and adjustment
- Adhesive cures at room temperature, making it a convenient and easy to use solution for challenging applications
- Reaches high strength quickly with heat cure
3M™ Scotch-Weld™ Epoxy Adhesive DP420 is a toughened, two-part epoxy structural adhesive that provides good strength along with high impact and fatigue resistance to meet demanding bonding challenges. 3M™ Scotch-Weld Epoxy Adhesive DP420 can replace mechanical fasteners, screws, rivets and spot welds in many applications.
High Peel and Shear Strength Maintains Lasting Bond at High and Low Temperatures
3M™ Scotch-Weld™ Epoxy Adhesive DP420 maintains bond strength at high and low temperatures and can withstand paint bake operations up to 400°F for 60 minutes. It works well on a variety of substrates such as metals, ceramics, wood, glass, many composites and plastics, and is an excellent indoor bonding agent for joining, gluing, potting, panel bonding, and structural bonding. 3M™ Scotch-Weld™ Epoxy Adhesive DP420 Off-White meets the requirements for UL 94 HB.
Recommended Applications
Small joint assembly
Heavy-duty mounting assembly
Metalworking
Carbon fiber epoxy bonding
20 Minute Work Life Provides Time for Positioning and Adjustment
3M™ Scotch-Weld™ Epoxy Adhesive DP420 reaches handling strength in approximately two hours and is fully cured in 24 hours (at 72°F/22°C.) The mix ratio is 2:1 and provides a 20 minute work life, providing time to adjust for desired fit prior to curing. This adhesive is available in a variety of package sizes and can be dispensed in several ways to meet the demands of the user and the job.
Toughened for Impact and Fatigue Resistance
3M™ Scotch-Weld ™ Epoxy Adhesive DP420 is appropriate for applications that will face tough environmental challenges. Formulated to provide strong adhesion for the long-term, this resilient epoxy is another way 3M meets and exceeds the demands of even the toughest applications.
What are Epoxy Adhesives?
Epoxy adhesives are part of the class of adhesives called "structural adhesives," which also includes polyurethane, acrylic, cyanoacrylate and others. Epoxies are formulated as liquid reactive polymers that undergo a chemical reaction when mixed and then cure to form a solid plastic material. Once the two parts are mixed in their specified ratio, they begin the curing process and offer a
Typical Properties
| Adhesive Type | Epoxy |
| Applications | Impact Resistance, Bonding, Potting |
| Brands | Scotch-Weld™ |
| Container Size (Metric) | 3.78 L, 18.93 L, 50 mL, 200 mL, 208.2 L, 400 mL |
| Features | Low Odor |
| Hardness | 75 - 80 Shore D |
| Industries | Construction, Consumer Goods, Electronics, General Industrial, Military and Government, Specialty Vehicle, Transportation, Metalworking, Signage, Woodworking, Plastic, Composite |
| Mix Ratio Volume Base:Accelerator | 2:1 |
| Open Time | 20 min @ 72 °F (22 °C) |
| Performance Level | Best |
| Physical Form | Flowable Liquid |
| Product Form | Kit, Each, Cartridge |
| Set Time | 2 hr |
| Shear Strength at 72 Degrees F (22 Degrees C) | 4500 psi |
| Specific Gravity | 1.1, 1.13, 1.14 |
| Specifications Met | UL 94 HB |
| Storage Temperature (Celsius) | 22℃, 16°C - 27°C |
| Surface Type | Unpainted, Powder Coated, Painted, Smooth |
| Units per Case | 1.0, 6.0, 12.0 |
| Volume (metric) | 3.8 L, 18.927 L, 50 mL, 200 mL, 208.198 L, 400 mL |
| Work Life | 4 - 8 min, 15 min - 30 min |
Resources
Safety Data Sheets
Document Number: MSDS_2205219_MY_EN
(PDF)
Safety Data Sheets
Document Number: MSDS_0876383_MY_EN
(PDF)
Safety Data Sheets
Document Number: MSDS_0873521_MY_EN
(HTML)
