Master Bond Speedbond 31 is an extra-fast curing, no-mix high performance toughened acrylic adhesive system offering exceptional ease of application and remarkably high bonding strength to metals, ceramics, glass, wood, most plastics and rubbers. This unique product comprises a low viscosity liquid activator and the base adhesive resin. No mixing is necessary prior to use. For bonding, the activator is applied to one or both of the surfaces to be joined and let dry for approximately 2 minutes. The adhesive resin is then applied to either of the surfaces to be joined and the parts to be bonded are assembled. Only contact pressure sufficient to maintain the parts in their proper position need be applied during assembly until handling strength is developed. This unique polymer system can be used over the exceptionally wide temperature range of -60 to +250°F. Handling strength is achieved surprisingly fast usually within less than 3 minutes, the time depending on the surfaces to be joined and the gap width. For many closely fitting surfaces handling strength can be obtained within less than 1 minute. Maximum bonding strength is achieved within 6 hours or less.

Rapidly providing high shear strength as well as superior impact and shock resistance Master Bond Speedbond 31 adhesive system optimizes many difficult bonding operations, enhances productivity and reduces failures not only during manufacturing operations but also during shipment of bonded parts and in actual services. Master Bond Speedbond 31 offers excellent bonding strength to a great number of different metal and plastic substrates. Unlike most other adhesives, its performance is relatively insensitive to substrate cleaning procedures. In many cases adequate adhesion can be obtained even to oily metal surfaces. For optimal strength proper substrate cleaning is recommended. The table below summarizes the outstanding characteristics of the Master Bond Speedbond 31 adhesive system. The convenience of an ambient temperature, no-mix cure and the reliable high performance of this adhesive system have assured its wide usage in the electronic, electrical, computer, metalworking, appliance and aerospace industries. The Master Bond Speedbond 31 system is 100% reactive and does not contain any solvents or diluents.