Toughened resin systems for composite applications

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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523527, 524538, 524539, 525422, 525432, 525928, C08L 7908, C08K 340, C08J 524

Patent

active

052487113

ABSTRACT:
Thermosetting resins for use in high performance fiber-reinforced composites are toughened without compromising their processability by the inclusion of micron-sized particles of thermoplastic material which are solid at ambient temperatures but solubilize in the resins at a temperature below the gel temperature of the thermosetting resin. By appropriate selection of the solubilization temperature (or temperature range) of the thermoplastic material, one achieves a composite product having intralaminar or interlaminar toughness emphasized or a combination of both. The invention is of particular utility when applied to bismaleimide resin systems.

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