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  • Optically Clear Epoxy

Photonics Spectra
Jun 2011
Master Bond Inc.Request Info
For demanding applications where highly flexible, impact-resistant bonds are required, Master Bond Inc. has developed Polymer System EP37-3FLF. This optically clear, two-component epoxy exhibits good resistance to cryogenic temperatures and severe thermal cycling. Its low exo-therm also makes it a good potting, encapsulating and casting system, especially where wider cross-section thicknesses are specified. Its combination of properties allows it to cure without stressing delicate electronic components. Serviceable over the range of 4 K to 250 °F, the epoxy cures at room temperature in two to three days, or faster at elevated temperatures. It offers a convenient, noncritical 1:1 mix ratio by weight or volume, and a low mixed viscosity of 1400 to 1500 cycles per second. It bonds well to a variety of substrates.


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Common name for a variety of adhesives used for lens bonding, fiber optic splicing and other photonics applications. The term is actually a prefix denoting the presence of an epoxide group in a molecule.
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...
Pertaining to optics and the phenomena of light.
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