Impact Resistance of Reinforced Plastics Based on Polysulfone-Epoxy Blends

Abstract

The low velocity impact behavior of composites based on polysulfone, epoxy resin and polysulfone-epoxy blends (5 and 10% polysulfone) was investigated. Glass and carbon reinforcing fibers were used. Specimens were loaded by three-point bending scheme, that have produced shear delamination of glass fiber reinforced plastics (GFRP) and fibers transversal failure of carbon fiber reinforced plastics (CFRP). A change of loading rate fromstatic to impact have resulted in a shift of GFRP shear strength maximum in the direction of higher PSF content in a matrix. An increase of polysulfone content also leads to the gradual growth of GFRP initiation energy and CFRP total energy. The best impact resistance was obtained for GFRP based on 10% polysulfone blend.

Keywords

impact properties polysulfone polysulfone-epoxy blends glass fiber carbon fiber shear strength failure energy impact toughness

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