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  • Epoxy Gel
Apr 2013
Master Bond Inc.Request Info
HACKENSACK, N.J., April 1, 2013 —  Master Bond’s Super Gel 9, an optically clear, two-component urethane-modified epoxy gel, offers dimensional stability, softness and resilience for applications including the encapsulation of sensitive electronic parts and the sealing of optical components.

The adhesive has an exceptionally low Shore A hardness of about 5-10, making it suitable for retrieving components with a sharp knife or razor blade. It will not shatter during this process and can withstand rigorous thermal cycling and thermal/mechanical shock.

The gel has a 2:1 mix ratio by weight or volume, and a low viscosity and exotherm, enabling it to be cast in sections up to 2 to 3 in. It bonds well to substrates including metals, glass, ceramics and many rubbers and plastics, and has a working life of 7 to 9 h, depending on the mass that is mixed (the smaller the mass, the longer the working life). The service temperature range is –100 to 200 °F.

The gel is available in ½ pints, pints, quarts, gallons, 5-gallon container kits and gun dispensers. The system is used in the aerospace, electronic, optical, electro-optical and other specialty industries.


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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.
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...
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