3M DP8405NS
Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.
Main features
- 10:1 Acrylic Mixing by Volume
- 0.010-Inch Glass-Bead Control
- 18 to 20-Minute Structural Strength
Product Description
3M Scotch-Weld Acrylic Adhesive DP8405NS is a toughened, non-sag two-part acrylic adhesive for structural bonding of metals and many plastics, including slightly oily metal surfaces. It mixes 10:1 by volume or 9.5:1 by weight and contains 0.010-inch glass beads to control bondline thickness. Typical mixed viscosity is 60,000 cP. At 23 deg C, typical work life is 4 to 6 minutes; open time is 3 minutes before bond closure. Typical time to structural strength of 6.9 MPa overlap shear is 18 to 20 minutes. Typical full cure takes 24 hours at 23 deg C, defined by reaching at least 80% of ultimate overlap-shear strength.
Key features
- 0.010-inch bondline-control beads: Embedded glass beads physically control the adhesive spacing between bonded surfaces.
- 4 to 6-minute work life: This typical interval is the maximum static-mixer residence time at 23 deg C before dispensing requires undue force.
- 18 to 20-minute structural-strength development: The typical endpoint is 6.9 MPa overlap shear, distinct from the 24-hour full-cure interval.
Applications
HVAC, appliance, sporting-goods, specialty-vehicle, and sign-manufacturing assemblies; bonding plastics, composites, and powder coats to metal.
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 by volume (B:A) | 10:1 | - | Two-part system |
| Mix ratio by weight (B:A) | 9.5:1 | - | Two-part system |
| Mixed viscosity | 60,000 | cP | Typical value |
| Open time | 3 | min | Maximum before bond closure and fixing |
| Work life | 4 to 6 | min | 23 deg C; static mixing nozzle |
| Time to structural strength | 18 to 20 | min | Time to 6.9 MPa overlap shear |
| Time to full cure | 24 | h | 23 deg C; time to at least 80% ultimate overlap shear |
| Glass-bead diameter | 0.010 | in | Bondline-thickness control |
