Structure of Reinforcing Components

Particle reinforced composite systems can be either large particle or dispersion strengthened. If a composite is reinforced by large particles (larger than 0.1 [xm and equiaxed, which are harder and stiffer than the matrix), mechanical properties are dependent on volume fractions of both components and are enhanced by increase of particulate content. Concrete is a common large particle strengthened composite where both matrix and particulate phases are ceramic materials. 

The global market for advanced composites consumes over 140,000 tonnes/year of fibre reinforcements (of carbon, aramid, high modulus PE, boron, various types of glass fibres). 

Carbon fibres have been known for more than 100 years, however, only after 1950s, did they become more common after the increase of interest for high strength and light 

Glass Fibres (provide low dielectric properties, better insulation, heat formability)  

Para-Aramid Fibres (provide low lammability, low GTE, low de, insulation)  

---