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News

Dimensionally stable UV curable system with high glass transition temperature

Master Bond : 10 March, 2013  (New Product)
Suitable for high production applications, Master Bond UV25 offers fast fixture times, rapid curing and high temperature resistance. This multifunctional one component UV curable system was developed for bonding, sealing, coating and encapsulation applications. It is widely used in aerospace, fibre-optic, optical, electronic and related industries.
Dimensionally stable UV curable system with high glass transition temperature

Master Bond UV25’s most notable feature is its thermal stability, with a glass transition temperature of 186C. It is serviceable over the broad range of -60 to +500°F. Additionally, this material is optically clear with a refractive index of 1.55 at room temperature.

The Tg of Master Bond <a href=adhesives, sealants and potting compounds range from as low as 50C to above 250C." src="https://www.newmaterials.com/ckfinder/userfiles/images/Master Bond glass-transition_300x203.gif" style="border-bottom: 1px solid; border-left: 1px solid; margin: 3px 5px; width: 250px; float: right; height: 169px; border-top: 1px solid; border-right: 1px solid" />Upon exposure to a UV light source emitting at a wavelength of 320-365 nm with an energy output of 20-40mwW/cm<sq> UV25 cures in 20-30s. The rate of cure also depends upon the compound’s distance from the light source, the thickness of the section and the intensity of the light source. It is not oxygen inhibited and therefore does not require any special treatment in that regard. The product does not contain any solvents or volatiles and features low shrinkage upon curing. It bonds well to glass, surface treated metals and plastics such as polycarbonates and acrylics, among others.

When being used in potting applications, this system can cure in section up to 0.100-0.120 inches. At room temperature, UV25 has a moderate viscosity of 7000-11,000 cps. It is also a competent electrical insulator.

UV25 can be stored for up to 6 months in its original, unopened containers with no exposure to light.

Most Popular Products with High Glass Transition Temperature

EP17HT One component, no mix structural epoxy adhesive. Cures at 300F in 90-120 minutes. Tg > 220C. Excellent chemical resistance. Superior electrical insulation properties.
EP65HT-1 Fast curing, two component epoxy adhesive. Tg > 125C. NASA low outgassing certified. Available in convenient gun applicator.
Supreme 10HT Single part, heat curing epoxy adhesive. High peel and shear strength. Resistant to thermal cycling and vibration, impact and shock. Tg 130-160C.
EP62-1 Easy to use epoxy system. Long working life at room temperature. Cures at moderately elevated temperatures. Outstanding chemical resistance properties. Glass transition temperature > 170C. Superior dimensional stability.

 

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