Glass matrix composites, fiber-reinforced impact resistance

In the form of short (1/4-1/2 in.) fibers, glass leads to good impact strength, electrical properties, and temperature resistance in many thermosetting compositions. This use is not to be confused with its function as long fibers or woven fabric to reinforce resin matrix composites. 

This felt contained all components of the composite (i.e., matrix and reinforcement) in short fiber form. It was found that even a relatively small amount of GF (45 wt.% flax, 5 wt.% glass) resulted in a significant improvement in the dynamic impact properties. If the GF content was 20 wt.% and flax 30 wt.%, a twofold increase in the impact resistance was observed. 

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