Epoxy resin

A common thermoset material used in aircraft construction. Used as the bonding matrix to distribute the stresses to the fibers, and hold the fibers together. When mixed with a catalyst, they are adhesive, resistant to chemicals, are water resistant, and are unaffected by heat or cold. One part of a two part system which combines the resin and the catalyst to form the bonding matrix. In composites, the term “resin” is often used to describe the two parts mixed together.