Astrium Sas

Eads Space Transportation Sa

Estelle Chauray

Brigitte Defoort

Alain Soum

Frédéric Boursereau

The invention relates to a material with high fracture toughness based on a vinyl ester resin and/or on an epoxide resin and to its process of manufacture. This material comprises at least one polymerized resin chosen from vinyl ester resins and epoxide resins which can be polymerized at a temperature of less than 70&#xb0; C. and their blends, and a thermoplastic adjuvant present in this resin in the form of particles, and exhibits a fracture toughness (K) of greater than or equal to 1.2 MPa&#xb7;mas determined according to Standard ISO 13586:2000. It also relates to a composite material comprising a matrix composed of said material and a reinforcement. Applications: automobile, railway, ship-building, aeronautical, aerospatial and other industries.

High toughness vinylester and/or epoxy resin-based material, its process of manufacture, composite material comprising it and uses thereof

A material having a fracture toughness (K) of at least 1.2 Mpam.mas determined according to Standard ISO 13586:2000 comprises a vinyl ester and/or epoxide resin polymerizable at a temperature of less than 70&#xb0; C. combined with thermoplastic particles.

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Pessac, France

Estelle Chauray