The reinforcing dispersed phase may be in form of either continuous or discontinuous carbon fibers of diameter about 0.0004” (10 mkm) commonly woven into a cloth.
Carbon fibers are used for reinforcing polymer matrix due to the following their properties:
The main disadvantage of carbon (Graphite) fibers is catastrophic mode of failure (carbon fibers are brittle).
The types of carbon fibers are as follows:
Carbon fibers are also classified according to the manufacturing method:
1. PAN-based carbon fibers (the most popular type of carbon fibers).
In this method carbon fibers are produced by conversion of polyacrylonitrile (PAN) precursor through the following stages:
2. Pitch-based carbon fibers.
Carbon fibers of this type are manufactured from pitch:
The most popular matrix materials for manufacturing Carbon Fiber Reinforced Polymers (CFRP) are thermosets such as epoxy, polyester and thermoplastics such as nylon (polyamide).
Carbon Fiber Reinforced Polymers (CFRP) materials usually have laminate structure, providing reinforcing in two perpendicular directions.
Carbon Fiber Reinforced Polymers (CFRP) are characterized by the following properties:
Carbon Fiber Reinforced Polymers (CFRP) are used for manufacturing: automotive marine and aerospace parts, sport goods (golf clubs, skis, tennis racquets, fishing rods), bicycle frames.