Glass fibers mechanical properties Fiber reinforced plastics 2 Mechanical properties 2 Rubber 2 epoxy 2 Additives 1 Adhesion 1 Adipic acids 1 Bending strength 1 Biodegradable polymers 1 Butadiene 1 Butadiene-acrylonitrile rubber 1 Composite materials 1 Composite wind turbine blade 1 Coupling agents 1 Cracks 1 Cross-linking density 1 Dissolution 1 Environmental problems 1 Environmental stress cracking resistances 1 Epoxidised natural rubber 1 Epoxy resins 1 Fibre-reinforced epoxy 1 Flexural properties 1 Friction 1 Glass-fibers 1 Hemp 1 Impact strength 1 Kenaf fibers 1