Hygrothermal Durability and Thermal Aging Behavior Prediction of High Temperature Polymer Matrix Composites and Their Resins

摘要

Prediction of the cure induced T_g increases and associated matrix and composite mechanical property deterioration of BMI systems in real service environment is attempted by network structure interrelations with mechanical and thermal properties as a function of composition (initial monomer ratio) and time-temperature cure cycles. Tensile and flexural properties of four BMI compositions at six different cure cycles (or degree of cure) have been determined at three temperatures, 23deg C, 177deg C, and 250deg C and correlated to T_g and density of the systems.