Fracture Properties of Basalt Fibre Composites with Cured or Pyrolysed Matrix
Composite materials based on polysiloxane matrix reinforced by basalt fibres were prepared in laboratories of the IRSM ASCR. The composite samples were pyrolysed at 400 ÷ 750 °C after moulding and curing at 250 °C. Measurement of several mechanical characteristics (flexural strength, fracture toughness, impact strength, and measurement of elasticity) demonstrates a favourable influence of pyrolysis in comparison with the cured-only composite material. Fracture toughness was measured by chevron-notch technique and fracture surfaces were investigated using a scanning electron microscopy.
J. Dusza, R. Danzer, R. Morrell and G.D. Quinn
M. Černý et al., "Fracture Properties of Basalt Fibre Composites with Cured or Pyrolysed Matrix", Key Engineering Materials, Vol. 409, pp. 326-329, 2009