| Popis: |
One component of Lawrence Livermore National Laboratory's (LLNL) flywheel program is the development of new resin systems to serve as matrix materials for fiber-reinforced composites. A resin matrix for filament-wound flywheels must have a combination of characteristics that is normally difficult to achieve and, at times, may be almost mutually exclusive. The needs most prominent are low viscosity for fiber penetration, a long pot life for handling ease, low toxicity, and low cost. Very few resin systems satisfactorily meet each of these criteria. An additional constraint lies within the service temperatures where the flywheel must operate. Three distinct temperature regimes have been defined at 65, 100, and 120°C or higher. For the low-temperature use, a room-temperature-curable resin system with a glass transition temperature (Tg) of approximately 65°C seems satisfactory [1]. For intermediate-temperature uses, a rubberized epoxy resin cured with an aromatic amine (Tg = 104°C) looks promising [2]. |
