EPOXY MATRIX TOUGHENED WITH POLYIMIDE THERMOPLASTIC RESIN

摘要

the invention relates to a composition of matrix comprising at least two components epoxy toughened epoxy hardener, an amine, and about 10% to 25% of a thermoplastic polyimide micropulvu00e9risu00e9 having a molecular weight between about 20 000 and 100 000 and a tg of at least s about 220 degrees celsius.the invention also relates to a process for preparing a composition consisting of epoxy cured matrix) for preheating a mixture of at least two epoxy compounds at a temperature of about 130 degrees to about 140 degrees; (b) mixing the mixture of the step (a), an epoxy, a the rmoplastique micropulvu00e9risu00e9 polyimide; and (c) mixing the epoxy and thermoplastic mixture at a temperature of aboutabout 130 degrees to 110 degrees of iron; and (d) is added to the mixture of a hardener and epoxy, amino, and then mixed with about 110 degrees and 130 degrees to obtain a low viscosity of the mixture.the invention also concerns a pre preg prepared from the composition of epoxy matrix specified above, and from the appropriate reinforcement, as well as a process for the production of such components.