What is epoxy?

  • (noun): A thermosetting resin; used chiefly in strong adhesives and coatings and laminates.
    Synonyms: epoxy resin, epoxy glue
    See also — Additional definitions below


Epoxy is a term used to denote both the basic components and the cured end products of epoxy resins, as well as a colloquial name for the epoxide functional group. Epoxy resins, also known as polyepoxides are a class of reactive prepolymers and polymers which contain epoxide groups. Epoxy resins may be reacted (cross-linked) either with themselves through catalytic homopolymerisation, or with a wide range of co-reactants including polyfunctional amines, acids (and acid anhydrides), phenols, alcohols and thiols. These co-reactants are often referred to as hardeners or curatives, and the cross-linking reaction is commonly referred to as curing. Reaction of polyepoxides with themselves or with polyfunctional hardeners forms a thermosetting polymer, often with high mechanical properties, temperature and chemical resistance. Epoxy has a wide range of applications, including metal coatings, use in electronics / electrical components, high tension electrical insulators, fiber-reinforced plastic materials and structural adhesives.

Read more about Epoxy.

Some articles on epoxy:

Juvenile-hormone Esterase
... chemical reaction methyl (2E,6E)-(10R,11S)-10,11-epoxy-3,7,11-trimethyltrideca-2,6-dienoate + H2O (2E,6E)-(10R,11S)-10,11-epoxy-3,7,11-trimethyltrideca-2,6-dienoate + methanol The 3 ... enzyme class is methyl-(2E,6E)-(10R,11S)-10,11-epoxy-3,7,11-trimethyltrideca-2,6-die noate acylhydrolase ...
Fiberglass Sheet Laminating - Safety
... Be sure to keep fiberglass and epoxy away from open flames Do not inhale excess fumes from epoxy or allow epoxy to come in contact with eyes or skin ...
Carbon-fiber-reinforced Polymer - Manufacture - Molding
... One method of producing graphite-epoxy parts is by layering sheets of carbon fiber cloth into a mold in the shape of the final product ... The mold is then filled with epoxy and is heated or air-cured ... Parts used in less critical areas are manufactured by draping cloth over a mold, with epoxy either preimpregnated into the fibers (also known as pre-preg) or "painted" over it ...
Epoxy - Health Risks
... The primary risk associated with epoxy use is often related to the hardener component and not to the epoxy resin itself ... Liquid epoxy resins in their uncured state are mostly classed as irritant to the eyes and skin, as well as toxic to aquatic organisms ... Solid epoxy resins are generally safer than liquid epoxy resins, and many are classified non-hazardous materials ...
Epoxy Putty
... Epoxy putty is a room-temperature-hardening substance used as a space-filling adhesive ... Unlike many other types of glues, an epoxy adhesive can fill gaps and even be molded into a structural part ...

More definitions of "epoxy":

  • (verb): Glue with epoxy.
    Example: "Epoxy the shards"