Abstract:This study relates the formability of thermoplastic poly(ethersu1fone) HTA composites to thermooxidative history and rheological behavior. HTA/IM8 graphite fiber preforms were prepared under various temperature, time, and environmental (unbagged and vacuum-bagged) conditions, then consolidated into finished laminates under identical conditions. X-ray photoelectron spectroscopy and pyrolysis/gas chromatography/mass spectrometry were used to assess chemical degradation, and dynamic mechanical analysis (DMA) was … Show more
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