Reinforcements

Glass:
Low-cost high specific strength, modest specific stiffness

Carbon:
High cost but with high specific strength AND stiffness

Others:
Aramids, Basalt etc.

Resins

Epoxies

Vinyl/Poly-ester

“Toughened” Resins:
ETBN/CTBN Reactive Liquid Polymers
Core Shell Rubber
Nano-technologies

Thermoplastics