The document is a technical data sheet for 3M Scotch‑Weld DP‑460, a two‑component (2B:1A) epoxy structural adhesive. It details the product’s composition, mixing ratio, color, viscosity, density, and pot life. Physical properties such as Shore D hardness, cure schedule, temperature resistance, and thermal expansion are listed, along with thermal conductivity and electrical characteristics (dielectric constant, volume resistivity). The sheet provides step‑by‑step application instructions, describing the cartridge and EPX applicator system, mixing, dispensing, and recommended bond line thickness, as well as solvent resistance. Comprehensive surface‑preparation procedures are given for steel, aluminum, plastics, and rubbers. Performance data include shear‑strength values for a range of substrates, adhesion retention after exposure to water, humidity, solvents, and elevated temperatures, and temperature‑dependent adhesion and shear strength curves. Storage recommendations (15‑month stability, 15‑25 °C), safety precautions (glove use, hand‑cleaning), and 3M Brazil technical support contact information conclude the sheet. All data are marked as typical, not to be used as specifications.
Topics
Product Composition and Mixing Ratio
Bi‑component epoxy adhesive (Part A amber, Part B white) mixed in a 2B:1A volume ratio, with specified viscosities, densities, and a 60‑minute work time after mixing.
Physical, Thermal, and Electrical Property Profile
Typical physical data (Shore D 78, 120 min tack loss, 96 h cure at 23 °C), thermal expansion coefficient, thermal conductivity, dielectric constant, and volume resistivity.
Application Procedure and Cartridge System
Instructions for using the dual‑syringe cartridge with the EPX 3M applicator, mixing methods, dispensing pressure, recommended bond line thickness (0.005–0.008 in), and solvent resistance of the cured adhesive.
Surface Preparation Guidelines for Different Substrates
Step‑by‑step cleaning and abrasion protocols for steel, aluminum, plastics, and rubbers to ensure optimal adhesion.
Shear Strength Performance Across Materials
Measured shear‑strength values (kg/cm²) for aluminum, cold‑rolled steel, stainless steel, galvanized steel, polycarbonate, acrylic, polystyrene, ABS, PVC, SBR‑steel, and neoprene‑steel under standardized test conditions.
Environmental Aging and Adhesion Retention
Adhesion results after 30 days at 22 °C, water immersion, 49 °C/100 % RH, 93 °C/100 % RH, isopropyl‑alcohol immersion, and MEK immersion, showing the adhesive’s durability under harsh environments.
Temperature‑Dependent Adhesion and Shear Strength
Tables showing how peel adhesion and shear strength vary with temperature (‑55 °C, 23 °C, 12 °C, 71 °C, 82 °C) for aluminum‑aluminum bonds.
Storage, Safety Precautions, and Technical Support Contact
Recommended storage temperature (15‑25 °C) for 15‑month stability, mandatory glove use, hand‑cleaning guidance, and 3M Brazil technical service contact details.