Hackensack NJ November 2018. – Apart from their traditional use as fastening materials, adhesives also find wide application in bonding and encapsulation in segments as diverse as military/aerospace, medical, automotive, and industrial. Adhesive systems can differ in temperature resistance, thermal cycling resistance, viscosity, flexibility, cure times and other properties. They can withstand temperatures as low as 4K and as high as 600°F for applications that require resistance to extreme temperatures.
Master Bond’s UV26 is a new, one part UV curable system featuring a very high glass transition temperature (Tg), ranging from 160°C to 170°C. By way of review, Tg is the point at which a cured material alters state – going from a rigid solid to a more flexible, softer compound.
According to Master Bond, UV26 cures quickly when exposed to UV light emitting at a wavelength of 320-365 nm with an energy output as low as 20-40 milliwatts per cm². In fact, UV26 cures so quickly that care must be taken not to cure it in sections thicker than .004 to .005 inches (for bonding, a thickness of .001 to .002 inches is said by the supplier to be is more than adequate).
This NASA low outgassing certified compound offers strong adhesion to a wide variety of substrates such as glass, surface treated metals and many plastics including polycarbonates and acrylics. Master Bond says that UV26 is able to withstand acids, bases, fuels, and aggressive solvents far better than typical UV systems.
UV26 can be applied by brushing or syringe. It does not contain any solvents or volatiles and is not oxygen inhibited. It is available for purchase in 10 cc and 30 cc syringes, ½ pint and 1 pint containers and has a shelf life at 75°F of 6 months in the original unopened containers.