3M™ Scotch-Weld™ Structural Adhesives Primer EC-2174

• Spray, brush or roller application meets a variety of process requirements
• Corrosion inhibiting pigment provides protection inside the bondline
• Corrosion inhibiting pigment provides protection inside the bondline
• Promotes long-term durability in bonded joints
• Stable coating protects etched and anodized substrates for long-term storage
• Provides a solvent resistant coating when cured at 250°F for durable protection
• Can be co-cured with adhesives at 350°F to accommodate a variety of requirements

3M developed the 3M™ Scotch-Weld™ Structural Adhesive Primer EC-2174 to promote long-term durability for joints in metal bonding applications. This solvent-based adhesive primer is especially effective with 3M™ Scotch-Weld™ Structural Adhesive AF 31. The formula dries at ambient temperature and cures to a tough coating in contact with an adhesive film.

3M™ Scotch-Weld™ Structural Adhesive Primer EC-2174 helps ensure complete wetting of the film adhesive system to bonding surfaces and improves durability of the film adhesive. The EC-2174 provides a high degree of protection against corrosive environments, both inside and outside the adhesive bondline, and is designed for optimal performance when used with 3M™ Scotch-Weld™ Bonding Films, particularly the nitrile phenolic Scotch-Weld AF 31. When cured with a 350°F adhesive film, it helps promote long-term durability for bonded metal joints. EC-2174 retains high shear strength to 500°F (260°C) on 17-17PH stainless steel when used with Scotch-Weld AF 31.