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UV-Curable System

Photonics Spectra
May 2013
Master Bond Inc.Request Info
HACKENSACK, N.J., March 14, 2013 — Master Bond Inc.’s UV25 offers a one-part, no-mix system and rapid cures upon exposure to UV light. It features high temperature resistance and optical clarity with high light transmission properties.

With its thermal stability and glass transition temperature of 186 °C, it is serviceable from –60 °F to 500 °F. When exposed to UV light emitting at 320 to 365 nm with an energy output of 20 to 40 mW/cm², it cures in 20 to 30 s, depending upon the compound’s distance from the light source, the thickness of the section and the intensity of the light source. The adhesive bonds well to glass, surface-treated metals and plastics including polycarbonates and acrylics.

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

The system is suitable for bonding, sealing, coating and encapsulation applications for the aerospace, fiber optic, optical, electronic and related industries. It is available in syringes, ½-pint, pint, quart, gallon and 5-gallon containers.


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An intermolecular substance that serves to hold materials together. Two types are used in the optical industry: one, which must be transparent and colorless, to cement lenses together; and a general-purpose adhesive for bonding prisms and other glass parts to their metallic supports.
A noncrystalline, inorganic mixture of various metallic oxides fused by heating with glassifiers such as silica, or boric or phosphoric oxides. Common window or bottle glass is a mixture of soda, lime and sand, melted and cast, rolled or blown to shape. Most glasses are transparent in the visible spectrum and up to about 2.5 µm in the infrared, but some are opaque such as natural obsidian; these are, nevertheless, useful as mirror blanks. Traces of some elements such as cobalt, copper and...
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