1. All 3M Products
  • 3M™ Scotch-Weld™ Structural Adhesives Primer EC-3909, Blue, 900 ml
  • 3M™ Scotch-Weld™ Structural Adhesives Primer EC-3909, Blue, 900 ml

    3M ID FS910038603
    • Protects surface treated metals and diminish strongly the rate of natural re-oxidation
    • Protects surface-treated metals and diminishes the rate of natural re-oxidation
    • Improves shear and peel performance on both etched and anodized surfaces
    • Results in excellent environmental performance
     More...
    Specifications
    Attribute Name
    Value
    Product Type
    Primer
    Volume (Metric)
    900 mL
    Product Details
    • Protects surface treated metals and diminish strongly the rate of natural re-oxidation
    • Protects surface-treated metals and diminishes the rate of natural re-oxidation
    • Improves shear and peel performance on both etched and anodized surfaces
    • Results in excellent environmental performance
    • Simplifies production scheduling by protecting the cleaned surfaces until bonding operations can be completed
    • Can be co-cured with heat curing film or 1-part paste adhesives

    EC-3909 is a structural adhesive primer for AF 42, AF 126-2 and AF 3109-2 type of film adhesives.

    Prime Time Product
    3M™ Scotch-Weld™ Structural Adhesives Primer EC-3909 is a compatible primer for Scotch-Weld™ Film Adhesives in applications where improved adhesion to anodized aluminum is desired. This product provides optimal shear and peel performance on etched and anodized surfaces. It can be co-cured with heat curing film or 1-part paste adhesives, and is especially designed for use with the AF 163-2, AF 3109-2 and AF 126 film adhesives.

    EC-3909 can be applied by brush or spray and ensures complete wetting of film adhesives to adherend surfaces. This primer can help simplify production scheduling by protecting the cleaned surfaces until bonding operations can be completed. It also protects surface treated metals, resulting in a diminished rate of natural re-oxidation and excellent environmental performance.

    Primed for Take-Off
    In general, 3M Scotch-Weld™ structural adhesive primers complement the Scotch Weld™ Structural Adhesives portfolio and can be used to protect prepared substrates to be bonded. They facilitate "wet-out" of the primary adhesive agent to facilitate the bond between substrate and coating extrudate, and then are cured to enhance chemical resistance. Our adhesive primers help prepare the surfaces for the bonding agents and improve the conditions so that the adhesives are more effective and create stronger, longer lasting bonds.

    Our Best for Your Best
    3M is proud to partner with organizations across the spectrum of aerospace and related industries. Enabling efficiencies, reducing process times and lowering aircraft weight is how we execute our never-ending mission to offer best-in-class adhesives, sealants, surface protection products and composite resins that effectively reduce costs on multiple fronts. Professionals across the industry know the numerous advantages of 3M Aerospace. Our brand is widely recognized for the highest standards of quality and performance, adding value to the final results. By engineering reliability, longevity and value into all of our products, we have a history of saving money by reducing waste, rework and time.