Composite materials have the following characteristics:
- they consist of two or more materials of different kinds;
- almost two of these materials have different physical properties «sufficiently» different from one another, to impart different properties to the composite from those of the constituents.
To obtain a composite with high mechanical resistance is essential, in addition to the use of fiber-resistant, ensuring good adhesion between the matrix and the reinforcement.
The reinforcements used in polymer matrix composites are glass, carbon and fibers.
There are several production process of composite materials . The most popular are:
- manual drafting
- resin transfer molding (RTM)
- filament winding
- vacuum infusion
- centrifugal casting
- Closed molding compounds process
- autoclave molding