3M™ Scotch-Weld™ Epoxy Adhesive DP105
The 3M™ Scotch-Weld™ Epoxy Adhesive DP105 is a fast-setting, highly flexible, two-part epoxy adhesive that cures to a clear finish. Its unique combination of rapid curing and flexibility makes it ideal for bonding dissimilar materials, especially in applications where thermal expansion or vibration is a concern.
Key Features
Fast Setting: Achieves handling strength in approximately 20 minutes at room temperature.
Flexible When Cured: Accommodates movement and thermal expansion between bonded substrates.
Clear Appearance: Maintains a clear, colorless bond line, making it suitable for applications where aesthetics are important.
1:1 Mix Ratio: Simplifies mixing and ensures consistent adhesive performance.
High Peel Strength: Provides durable bonds that resist peeling forces.
Technical Specifications
Color (Mixed) : Clear
Mix Ratio (Volume) : 1:1
Work Life : 4–5 minutes at 23°C (73°F)
Time to Handling Strength : Approximately 20 minutes at 23°C (73°F)
Full Cure Time : 48 hours at 23°C (73°F)
Shore D Hardness : 25–30
Elongation : 120%
Dielectric Strength : 465 V/mil
Thermal Conductivity : 0.193 BTU-ft/ft²-hr-°F
Thermal Expansion Coefficient : 60–234 × 10⁻⁶ in/in/°C
Applications
Bonding dissimilar materials such as metals, plastics, glass, ceramics, and wood.
Applications requiring flexibility to accommodate thermal expansion or mechanical vibration.
Situations where a clear bond line is aesthetically desirable.
Handling & Safety
Surface Preparation: Ensure surfaces are clean, dry, and free from contaminants. For optimal bond strength, remove paint, oxide films, oils, dust, mold release agents, and other surface contaminants.
Mixing: Combine equal parts by volume of Part A and Part B. Mix thoroughly until a uniform clear color is achieved.
Application: Apply the mixed adhesive to one of the surfaces to be bonded. Join the parts together within the work life of the adhesive.
Curing: Allow the bonded assembly to cure at room temperature. Handling strength is typically achieved in 20 minutes, with full cure in 48 hours.
Storage: Store in a cool, dry place at temperatures between 60–80°F (15–27°C). Rotate stock on a first-in, first-out basis.
SDS
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