COMPOSITE MATERIALS ARE NON-HOMOGENEOUS MATERIALS WITH VERY HIGH MECHANICAL PROPERTIES AND LOW DENSITY.
THEY ARE MADE UP OF SEVERAL DIFFERENT SIMPLE MATERIALS, CALLED MATRIX AND REINFORCEMENT BECAUSE OF THEIR FUNCTION.
THE ROLE OF THE MATRIX IS TO ENCLOSE AND PREVENT THE DISPERSION OF THE REINFORCEMENT, WHICH IS DISPERSED IN THE MATRIX TO ENSURE THE MECHANICAL PROPERTIES OF THE WHOLE.
DEPENDING ON THE TYPE OF REINFORCEMENT, COMPOSITES ARE DEFINED AS FIBROUS OR PARTICULATE.
IN PARTICLE COMPOSITES, THE REINFORCEMENT CONSISTS OF PARTICLES.
THERE ARE VARIOUS TRADE NAMES FOR PARTICLE COMPOSITES, WHICH HAVE PARTICULAR HYGIENIC PROPERTIES: THEY ARE MADE UP OF ABOUT 2/3 MINERAL RESIN AND 1/3 ACRYLIC RESIN, WITH THE POSSIBLE ADDITION OF PIGMENTS.