3M DP8407NS
Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.
Main features
- 24.1 MPa Typical 24-Hour Cold-Rolled Steel Overlap Shear
- 5 to 7-Minute Work Life
- 0.010-Inch Glass-Bead Control
Product Description
3M Scotch-Weld Metal Bonder Acrylic Adhesive DP8407NS is a toughened two-part acrylic adhesive for structural bonding of metals and many plastics, including slightly oily metal surfaces. It uses a 10:1 mix ratio and contains 0.010-inch glass beads for bondline control. Typical work life in a static mixing nozzle is 5 to 7 minutes, with 7 minutes of open time before bond closure. Typical time to structural strength of 6.9 MPa overlap shear is 28 to 32 minutes, separate from the typical one-day full cure. Typical 24-hour overlap shear at 23 deg C is 24.1 MPa on cold-rolled steel and 31 MPa on etched aluminum.
Key features
- 5 to 7-minute work life: This typical interval is the maximum static-mixer residence time before dispensing requires undue force.
- 0.010-inch bondline-control beads: Embedded glass beads physically control the spacing of the bonded surfaces.
- 24.1 MPa steel overlap shear: Typical strength is measured on cold-rolled steel at 23 deg C after a 24-hour dwell.
Applications
Structural bonding of bare and coated metals and many plastics where peel, impact, and bond durability are selection factors.
Technical Specifications
General Properties
Physical Properties
Other Properties
Additional Information
As-supplied / before-processing properties
Values are typical and not specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Mix ratio | 10:1 | - | Two-part system |
| Base viscosity | 15,000 | cP | 23 deg C; cone-and-plate |
| Accelerator viscosity | 50,000 | cP | 23 deg C; cone-and-plate |
| Work life | 5 to 7 | min | Static mixing nozzle |
| Open time | 7 | min | Maximum before bond closure and fixing |
| Set time | 22 to 26 | min | 23 deg C; time to 0.3 MPa overlap shear |
| Time to structural strength | 28 to 32 | min | Time to 6.9 MPa overlap shear |
| Full cure | 1 | day | Typical mixed material |
After-processing / final-state properties
Values are typical and not specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Modulus | 1,200 | MPa | 23 deg C; ASTM D638 / ISO 527 |
| Tensile strain at break | 10 | % | 3 mm Type I specimen |
| Cold-rolled steel overlap shear | 24.1 | MPa | 23 deg C; 24 h dwell |
| Etched aluminum overlap shear | 31 | MPa | 23 deg C; 24 h dwell |
| Bell peel | 88 | N/cm | 23 deg C; etched aluminum; 24 h cure |
| Tensile strength | 16.5 | MPa | 3 mm Type I specimen |
