Fibre reinforced composites

摘要

A method is disclosed for producing a fibre reinforced composite by pultrusion having variable strength characteristics along its length including the steps of drawing through a pultrusion die 38 a series of reinforcing fibres 32 to form a pultruded fibre composite product. The method is characterised by incorporating in the reinforcing fibres 14 prior to the pultrusion step additional fibres 20 to form modified fibres 32 having a characteristic such as tenacity or modulus different from that of the first said reinforcing fibres 14 in order to vary the strength characteristics of the final composite 42 substantially without altering the cross-sectional area thereof. A curable or settable plastics material 40 is applied around the fibres during the pultrusion step and which is cured, part-cured or allowed to set to form the finished composite 42. <IMAGE>