FIELD: chemistry.
SUBSTANCE: invention relates to a composition curable epoxy resin, a method for preparing it, to composite and method for production thereof, as well as to cable for overhead power transmission. Curable epoxy resin composition containing (a) from 60 to 85 weight percent of a cycloaliphatic epoxy resin, (b) from 15 to 40 weight percent of an oxazolidone ring containing epoxy resin, (c) at least one anhydride hardener, and (d) at least one toughening agent improving impact strength. Weight percent values are relative to total weight of epoxy resins in the curable epoxy resin composition. Method for preparing the composition involves mixing said components of the curable epoxy resin. Composite involves continuous reinforcing fiber, imbedded in product of reaction for composition curable epoxy resin, and cable containing composite as a core.
EFFECT: invention ensures production of composite materials, which are characterized by high ultimate tensile strength, higher working temperatures, lower coefficient of thermal expansion.
15 cl, 2 tbl, 1 dwg, 2 ex
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