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Hybrid fiber tows containning both nano-fillers and continuous fibers, hybrid composites, and their production processes

United States Patent Application

20080020193
A1
View the Complete Application at the US Patent & Trademark Office
Disclosed is a hybrid fiber tow that comprises multiple continuous filaments and nanoscale fillers embedded in the interstitial spaces between continuous filaments. Nanoscale fillers may be selected from a nanoscale graphene plate, non-graphite platelet, carbon nano-tube, nano-rod, carbon nano-fiber, non-carbon nano-fiber, or a combination thereof. Also disclosed are a hybrid fiber tow impregnated with a matrix material and a composite structure fabricated from a hybrid fiber tow. The composite exhibits improved physical properties (e.g., thermal conductivity) in a direction transverse to the continuous fiber axis. A roll-to-roll process for producing a continuous fiber tow or matrix-impregnated fiber tow and an automated process for producing composite structures containing both continuous filaments and nanoscale fillers are also provided.
Jang, Bor Z. (Centerville, OH), Zhamu, Aruna (Centerville, OH), Guo, Jiusheng (Centerville, OH), Song, Lulu (Centerville, OH)
11/ 491,657
July 24, 2006
[0001] This invention is based on the research results of a project supported by the U.S. Department of Energy (DOE) SBIR-STTR Program. The US Government has certain rights on this invention.