3M Scotch-Weld Low Odour Acrylic Adhesive DP810

Prepare bonding surfaces. For oily metals, light wiping with a clean cloth is typically sufficient—extensive degreasing is not required. For painted or powder-coated surfaces, ensure good surface integrity. Roughen very smooth surfaces lightly with sandpaper if optimal adhesion is critical.

Ensure surfaces are dry. Moisture interferes with acrylic cure; allow wet surfaces to air dry or wipe with a cloth to remove excess moisture before adhesive application.

Prime surfaces if recommended. For critical applications or difficult substrates, consult 3M recommendations for optional primers that enhance adhesion on specific materials.

Mix the two-part adhesive. Dispense equal volumes of resin and hardener from the cartridge dispenser onto a disposable surface (cardboard, plastic sheet). Mix thoroughly with a stick or spreader, ensuring uniform colour and complete blending—inadequate mixing results in incomplete cure.

Apply to one bonding surface. Using a disposable stick or applicator, apply a thin, even bead of mixed adhesive to one surface. Avoid excessive application—a thin bond line (approximately 0.5–1 mm) delivers optimal strength.

Bring surfaces together. Press the bonded surfaces together firmly, holding or clamping them in alignment.

Allow initial handling strength to develop. After 20 minutes, the adhesive achieves handling strength allowing light movement or fixture removal. However, full strength development requires 8–24 hours depending on temperature and application thickness.

Provide clamping pressure during cure. Where feasible, apply clamps or fixtures to maintain alignment and pressure throughout the 8–24 hour cure period. Clamps should be removed after full cure to avoid damaging the cured adhesive.

Support heavy assemblies during cure. For vertical joints or overhead applications, provide temporary bracing to support weight during cure; the adhesive must support loads once cure is complete, but curing adhesive cannot support loads.

Allow full cure before service. Although handling strength develops in 20 minutes, allow full 8–24 hour cure before exposing the assembly to design loads or operating conditions.

Clean excess adhesive promptly. Remove uncured excess adhesive with a disposable cloth or scraper before it hardens. Cured adhesive requires mechanical removal.

Store unused adhesive properly. Store cartridges and mixed components at 0°C (32°F) to extend shelf life and maintain cure performance. Room temperature storage limits open time and can affect workability.

Product Type Two-part low-odour acrylic structural adhesive

Adhesive Classification Acrylic, room-temperature curing

Physical Form Flowable liquid requiring mixing

Container Format Cartridge with dispenser

Available Sizes 48.5 mL, 400 mL cartridges

Packaging Units per case: 6 or 12 cartridges

Mix Ratio 1:1 by volume (equal parts resin and hardener)

Work Life 10 minutes at 72°F (22°C)

Handling Strength 20 psi (20 minutes)

Full Cure Time 8–24 hours depending on temperature and application

Shear Strength 4200 psi

Adhesion Strength 20 psi

Specific Gravity 1.07

Cure Colour Tan or black (colour varies by lot)

Odour Profile Low odour compared to traditional acrylics

Flammability Non-flammable

Surface Compatibility Oily, painted, powder-coated, smooth, unpainted metals; plastics; composites; nylon

Temperature Range Storage at 0°C (32°F); application at room temperature

Application Method Manual mixing and application with applicator or dispenser

Clamping Requirement Recommended for optimal strength development

Impact Resistance Toughened formulation for impact and vibration environments

Industries Construction, manufacturing, metalworking, transportation, electronics, signage, woodworking

HS Code 3506.10

• Safety Data Sheet