3M™ Scotch-Weld™ Epoxy Adhesive 2216 is a high-strength, non-sag formula made to deliver a precision application for greater bond line control. Its long-lasting bond is flexible enough to withstand contraction and expansion, as well as the impact of environmental aging. With up to 120 minutes of working time, it offers ample time to adjust and reposition. Fully cured in 30 minutes at 200 °F (93 °C), 3M™ Scotch-Weld™ Epoxy Adhesive 2216 offers fast-setting results with multiple curing times and temperatures to meet the demands of your project. This product is ideal for use on metals and other substrates in construction, specialty vehicle, and any applications where a dense, smooth bond line is required.
Excellent for Cryogenic Bonding Applications
Our 3M™ Scotch-Weld Epoxy Adhesive 2216NS is designed to perform under extremely frigid temperatures. Because it can withstand temperatures up to -423°F/-252°C it is ideal for cryogenic bonding applications. At room temperature it offers a 90 minute work life to allow for repositioning and adjustments. It will slowly cure over 7 days, but can be heat cured to reduce this to as little as 30 minutes (at 200°F/93°C.) It has a bonded shear strength that can withstand up to 3,200 psi at 72°F/24°C.
Understanding Epoxy Adhesives
Epoxy adhesives, including 5 minute epoxy are part of the class of adhesives called "structural adhesives," which include polyurethane, acrylic, cyanoacrylate and others. Epoxies 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 working time where the adhesive can be applied and the two surfaces positioned as needed. This work life lasts anywhere from a few minutes to several hours. These structural adhesives provide high shear and peel strengths, depending on the formula, and better heat and chemical resistance than other common adhesives. In general, epoxy adhesives have the highest overall strength and offer the best performance and most resistance to high temperatures, solvents and outdoor weathering.
Epoxy adhesive (often referred to as epoxy glue) is 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. It is 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 epoxy for plastic flexible or epoxy for metal rigid, epoxy resin transparent or opaque, quick setting or slow setting. The versatility with which these adhesives can be formulated helps meet almost any requirement for bonding wood, metal, glass, stone and various plastics.
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