Hygrothermal behavior of T700 and T300 BMI used for advanced polymeric composite

摘要

The mechanism of hydrothermal ageing was investigated for T700/BMI 5428 and T300/QY8911 by studying its glass transition temperature, tensile/compressive properties, changes of surface morphology absorbed in water with 100°C temperature. Results show that the glass transition temperature getting lower with the rate of water absorption. The tensile/compressive strength of composite decreased in the humid and heat environments, although with the identical failure mode.