FIELD: chemistry.
SUBSTANCE: invention relates to epoxy compositions for use in prepregs as a curable matrix and to epoxy compositions reinforced with fibre, as well as to laminated structures comprising one or more layers of a cured prepreg. Compositions comprise a polyfunctional epoxy resin, a phenoxy resin, a flame retardant, a toughener and a curing system. Laminated structures are suitable for use in the manufacture of aircraft components, in particular interior and exterior trim panels and rotor blade couplings in helicopters.
EFFECT: invention provides the production of materials with high strength and other required mechanical properties, as well as high fire-resistant properties.
32 cl, 1 dwg, 5 tbl, 3 ex
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