3M™ Scotch-Weld™ Epoxy Adhesive 2290
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Details
Highlights
- 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 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.
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 and motors and wire windings. B-staging coated and dried parts are 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
Typical Properties
| Adhesive Type | Epoxy |
| Brands | Scotch-Weld™ |
| Container Size (Metric) | 3.8 Litre, 18.93 Litre, 208.2 Litre |
| Flame Retardant | UL94 HB |
| Full Cure | 30 - 60 min @ 350 °F (177 °C) @ 75 psi |
| Indoor/Outdoor | Both |
| Industries | Military and Government, Transportation, Construction, Consumer Goods, General Industrial, Electronics, Specialty Vehicle |
| Physical Form | Liquid |
| Product Form | Gallon |
| Product Type | Epoxy Adhesive |
| Shear Strength at 72 Degrees F (22 Degrees C) | 5000 psi |
| Solids Weight Percent (Approximate) | 19.5 % - 23 % |
| Storage Temperature (Celsius) | 22.0 °C |
| Units per Case | 1.0, 4.0 |
| Viscosity | Self-leveling |
| Volume (metric) | 19 L, 250.03 L |
Resources
Safety Data Sheets
Document Number: MSDS_1096718_MY_EN
(PDF)
