Brands: Scotch-Weld™
Package Sizes:
Shelf Life: 12 months
3M™ Scotch-Weld™ Low Odor Acrylic Adhesive DP8705NS is a black, non-sag, low-odor, two-part structural acrylic adhesive with a non-flammable classification. It is designed for bonding a variety of substrates, including metals, plastics, composites, and painted surfaces, with minimal surface preparation. This adhesive offers a 5-minute work life and achieves handling strength in approximately 6-8 minutes. It provides excellent impact strength, peel resistance, flexibility, and maintains structural strength at temperatures as low as -40°C (-40°F). The formulation includes spacer beads to control bond line thickness and has a reduced toxicological hazard profile, enhancing workplace safety.
| Attribute | Value |
|---|---|
| Color | Black |
| Mix Ratio by Volume (B:A) | 10:1 |
| Mix Ratio by Weight (B:A) | 10:1 |
| Base Viscosity | 15,000 – 80,000 cP¹ |
| Accelerator Viscosity | 5,000 – 20,000 cP¹ |
| Base Density | 1.03 g/cm³ |
| Accelerator Density | 1.1 g/cm³ |
¹ Viscosity measured using cone-and-plate viscometer; reported viscosity at 4 sec⁻¹ shear rate.
| Attribute | Value |
|---|---|
| Density (mixed) | 1.0 g/cm³ |
| Viscosity (mixed) | 40,000 cP |
| Work Life | 3 – 4 minutes¹ |
| Open Time | 4 – 6 minutes² |
| Set Time | 6 – 8 minutes³ |
| Time to Structural Strength | 8 – 12 minutes⁴ |
| Time to Full Cure | 24 hours at 23°C (73°F) |
¹ Maximum time adhesive can remain in a static mixing nozzle and still be expelled without undue force on the applicator.
² Maximum time allowed after applying adhesive to a substrate before bond must be closed and fixed.
³ Minimum time required to achieve 0.3 MPa (50 psi) of overlap shear strength.
⁴ Minimum time required to achieve 6.9 MPa (1,000 psi) of overlap shear strength.
| Attribute | Test Method | Value |
|---|---|---|
| Shore D Hardness | ASTM D2240 | 65 |
Overlap Shear Strength
| Substrate | Surface Preparation | Test Temperature | Dwell Time | Strength¹ |
|---|---|---|---|---|
| Aluminum | Etched | 23°C (73°F) | 24 hours | 16.6 MPa (2,404 psi) |
| Cold Rolled Steel | Light Abrasion and Solvent Clean | 23°C (73°F) | 24 hours | 14.4 MPa (2,092 psi) |
| ABS | Light Abrasion and Solvent Clean | 23°C (73°F) | 24 hours | 3.5 MPa (505 psi) |
| Acrylic (PMMA) | Light Abrasion and Solvent Clean | 23°C (73°F) | 24 hours | 4.2 MPa (616 psi) |
| Epoxy Resin (Fiber-Reinforced) | Light Abrasion and Solvent Clean | 23°C (73°F) | 24 hours | 11.7 MPa (1,701 psi) |
| Polyester (PET) | Light Abrasion and Solvent Clean | 23°C (73°F) | 24 hours | 4.4 MPa (643 psi) |
¹ Tested per ASTM D1002, ISO 4587.
Bell Peel Strength
| Substrate | Surface Preparation | Test Temperature | Dwell Time | Strength¹ |
|---|---|---|---|---|
| Aluminum | Etched | 23°C (73°F) | 24 hours | 79 N |
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As the year draws to a close and the Christmas season arrives, Avantek Viet Nam would like to extend our warmest Christmas greetings to all our valued customers, partners, and friends.
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