PREPREG CARBON FIBER
Intermediate sheet material of reinforcing fibers impregnated with a polymer matrix resin system. Matrices are typically thermosetting resins in a partially cured (B-staged) form, though thermoplastic resins are also employed. Carbon fibers may be incorporated into a Prepreg directly as rovings (i.e, unidirectional tape), or as a fabric, either woven or non-woven. In addition to the constituents, prepregs are classified by their aerial weight, typically in grams per square meter (gsm) or ounces per square yard (oz/yd2).