Two-component, urethane adhesive cures at room temperature for convenient easy use
Strong, impact-resistant structural bonds meet tough specifications and requirements
Excellent adhesion to many primed or painted metal and plastic substrates minimizes prep
Designed to develop sag resistance approximately 30 seconds after mixing to keep processes moving

3M™ developed Scotch-Weld™ Urethane Adhesive EC-3532 B/A as a fast acting, two-part urethane adhesive which cures at room temperature or with heat to form tough, impact-resistant structural bonds. Our adhesive offers strong adhesion on metals, plastics, composites, and many primed or painted metal and plastic substrates. It also becomes non-sag approximately 30 seconds after mixing.

3M™ Scotch-Weld™ Urethane Adhesives EC-3532 B/A creates strong impact-resistant bonds and is engineered to be sag-resistant approximately 30 seconds after mixing so the adhesive doesn't run, drip, or migrate. Its 5-15 minute work-life allows ample time for handling, accurate application, and positioning of parts. EC-3532 B/A forms a fast, secure bond between parts for desired results. To help keep your processes moving forward, 3M Scotch-Weld Urethane Adhesive EC-3532 B/A cures in 24 hours at room temperature, or sooner with heat. This option gives you control over the speed in which the bond reaches the shear strength required. And to meet various application methods and other needs, Scotch-Weld™ EC-3532 B/A can be applied using a spatula, trowel or flow equipment.

What is Urethane Adhesive?
Urethanes are a class of polymers generally noted for their flexibility when cured. Two-part urethane adhesives comprise two independent formulations designed to be mixed, much like an epoxy adhesive. The isocyanate stream, generally the accelerator or hardener side, reacts with the polyol or resin side. These two components will react when mixed, curing more quickly than one-part, moisture cure urethane systems — and with no depth of cure issues.

Urethane adhesives will work on most common materials such as wood, metals, rubbers, cured epoxy, leather, tile and glass, many plastics, concrete and more. The versatility of urethane adhesives comes from its chemical recipe; different chemical combinations result in different properties that produce different levels of stiffness, density, flexibility, or hardness. They can cure to a solid and be relatively rigid, or cure to a semi-hardened state and remain flexible to meet a wide range of requirements. In either finished state, urethane adhesives will maintain bond strength integrity through variable environmental factors such as temperature, moisture and chemical exposure.

The Benefits of Using a Structural Adhesive

Utilizing a structural adhesive like 3M™ Scotch-Weld™ Urethane Adhesive EC-3532 B/A comes with several advantages, such as:
Eliminating the need to damage surfaces (i.e. drilling holes)
Joining dissimilar materials and works well with many surfaces
Producing aesthetically pleasing results as refinishing steps are not required
Good environmental and chemical resistance
Delivers excellent temperature and solvent resistance
Does not need access to air or moisture to dry and therefore has an unlimited depth of cure

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.

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