Composites are artificially created materials in order to obtain new qualities that combine the properties of the components that build them. Most often these materials consist of two components, which are regarded as two solid phases. The main phase (resin) is called a matrix. The components embedded in the matrix are called reinforcing material (reinforcement). The basic requirement that ensuring normal operation of the composites between the two phases does not have any interference, for example chemical interactions or diffusion processes.