Kubota Research Associates Inc. and DuPont-Toray Co. Ltd. have developed prepreg thermoplastic composites based on high-tenacity long fibers such as DuPont's Kevlar.
Ruba-C composites based on Kevlar, polypropylene and polyvinyl butyral are available in limited quantities in the fourth quarter of 2005. Kevlar-reinforced thermoplastic polyimide and other high-performance resins will be introduced in 2006, said Kubota from the firm's Hockessin, Del., office.
Extremely high tenacity, shatter resistance, light weight and high productivity are key advantages Kubota claims for the new composites. DuPont-Toray and Kubota are promoting early potential uses of the prepregs in automotive parts and sports equipment. The new materials are made using Kubota's P-Wave manufacturing process based on near-infrared radiation.
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