Product Introduction
3M™ Scotch-Weld™ Epoxy Adhesive 2290 is a solvent-based, low viscosity amber tinted thermosetting epoxy adhesive requiring heat cure. It is designed for metal-to-metal coating and subsequent bonding, for example, in motor lamination and wire winding.
Exceptional High Shear and Peel Strength
3M™ Scotch-Weld™ Epoxy Adhesive 2290 is designed to coat and bond metal substrates, including steel and aluminum. This epoxy is a low (21% solids) formulation with very low viscosity. 3M™ Scotch-Weld™ Epoxy Adhesive 2290 can be applied in a variety of methods including: brushing, flow coating, dip coating, roll coating, knife coating, and spraying. It is ideal for assembling metal laminations and various applications on metal cores, rotors, motors, and wire windings. B-staging coated and dried parts is optional, allowing final cure up to 3 months later.
Recommended Applications:
- Assemble laminated steel cores for electrical motor stators and rotors
- Adhere copper foil to B-staged epoxy in the manufacture of printed circuits
- Coat, protect and utilize coils and electronic subassemblies
- Thin metal stack laminations such as those used in magnetic tape heads
Understanding Epoxy Adhesives
Epoxy adhesives are part of the class of adhesives called “structural adhesives,” which include polyurethane, acrylic, cyanoacrylate and others. One-part heat cured epoxies are rigid adhesives that have outstanding strength when measured at elevated temperatures. These adhesives require a thermal cure, typically around 250°-350°F (120°-180°C) for 40-60 minutes, to achieve full strength. They provide high shear and peel strengths, depending on the formula, and better heat and chemical resistance than other common adhesives.
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.
Bringing Better Ideas to the Surface through Science and Innovation
In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.
3M™ Scotch-Weld™ Epoxy Adhesive 2290 Features
- Offers exceptionally high shear and peel strength
- Solvent-based low viscosity coating formulation
- Dries to a tack-free film which allows bonds to be made up to 3 months later for B-staging and multi-stage processes
- Excellent wetting during cure requires only coating a single surface
- Heat press during cure recommended for lamination use
3M™ Scotch-Weld™ Epoxy Adhesive 2290 Applications
- Assembly of laminated steel cores for electrical motor stators and rotors
- Copper foil lamination to B-staged epoxy for printed circuit boards
- Coating and protecting coils and electronic subassemblies
- Bonding thin metal stack laminations, such as those used in magnetic tape heads
- Metal bonding tasks requiring long-term bonding flexibility with B-staging capability
About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.
| Property | Value |
|---|---|
| Adhesive Type | Epoxy |
| Brands | Scotch-Weld™ |
| Container Size (Imperial) | 1 Gallon, 5 Gallon, 55 Gallon |
| Container Size (Metric) | 3.8 Liter, 18.93 Liter, 208.2 Liter |
| Flame Retardant | UL94 HB |
| Full Cure Time | 30 – 60 min @ 350 °F (177 °C) @ 75 psi |
| Indoor/Outdoor | Both |
| Industries | Military & Government, Transportation, Construction, Consumer Goods, General Industrial, Electronics, Specialty Vehicle |
| Physical Form | Liquid |
| Product Color | Amber |
| Product Form | Gallon |
| Product Type | Epoxy Adhesive |
| Shear Strength | 5000 psi |
| Smallest Saleable Unit | Canister, Drum |
| Solids Weight Percent (Approximate) | 19.5 % – 23 % |
| Specific Gravity | 1.2 in dried state |
| Storage Temperature (Celsius) | 22.0 °C |
| Storage Temperature (Fahrenheit) | 72.0 °F |
| Units per Case | 1.0, 4.0 |
| Viscosity | Self-leveling |
| Viscosity Range (cps) at Room Temperature | 40-80 |
| Volume (Imperial) | 1 gal, 5 gal, 55 gal |
| Volume (Metric) | 19 L, 250.03 L |
