3M™ Scotch-Weld™ Metal Primer 3901, Red, 0.5 Pint, 12 Can/Case

3M™ Scotch-Weld™ Metal Primer 3901 is a one-component, metal and glass primer designed for applications using 3M™ Scotch-Weld™ film and liquid structural adhesives. This product is specially formulated to enhance metal and glass adhesion, making it easier to bond surfaces. It also protects cleaned surfaces until bonding operations can be completed, simplifying production scheduling. Additionally, it offers resistance to environmental exposure and improved corrosion protection to metal. The low viscosity of 3M™ Scotch-Weld™ Metal Primer 3901 ensures ease-of-application and complete wetting of the film adhesive to adhered surfaces, providing an ideal application surface.

3M™ Scotch-Weld™ Metal Primer 3901 is ideal for applications using 3M™ Scotch-Weld™ Structural Adhesives. It ensures that surfaces remain relatively free of oxidation until the bonding application is completed. Protection from and resistance to corrosion and environmental exposure is key to successful, long-lasting adhesion.

Epoxy adhesives are a type of structural adhesive that includes polyurethane, acrylic, cyanoacrylate, and others. They are formulated as liquid reactive polymers that undergo a chemical reaction when mixed and then cure to form a solid plastic material. Once the two parts are mixed in their specified ratio, they begin the curing process and offer a limited work life (open time) where the adhesive can be applied and the two surfaces positioned as needed. These structural adhesives provide high shear and peel strengths, depending on the formula, and better heat and chemical resistance than other common adhesives. Epoxy adhesives have the highest overall strength and offer the best performance and most resistance to high temperatures, solvents, and outdoor weathering.

Epoxy adhesives are widely used in building and home construction, aircraft and automobile manufacturing, bicycle, boat, golf clubs, ski and snowboard assembly, as well as a host of home use and other applications. They are used virtually anywhere high-strength bonds are needed along with resistance to environmental conditions. These adhesives are popular for their ease of use, mechanical strength, and chemical resistance. Formulations can be created to make epoxies flexible or rigid, transparent or opaque, quick setting or slow setting. The versatility with which epoxy adhesives can be formulated helps meet almost any requirement for bonding wood, metal, glass, stone, and various plastics.

Industrial uses for epoxies range widely and, in addition to adhesives, include coatings and composite materials like carbon fiber and glass-reinforced composites. They are the preferred choice due to their ability to flow and conform to the work area, strong adhesion, chemical and heat resistance, and exceptional mechanical and electrical insulating properties.