Mechanical properties graphite-reinforced plastics

The second stage involves heating the fibers for a further period at 1770 K to eliminate all elements other than carbon. This carbonization is believed to involve cross-linking of the chains to form the hexagonal graphite structure, and this final heat treatment can affect the mechanical properties to a marked extent, as shown in Figure 15.17. The major application so far is in composite structures where they act as extremely effective reinforcing fibers. These reinforced plastic composites find uses in the aircraft industry, in the small-boat trade, and as ablative composites. 

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