Generalized Hybrid Modeling to Determine Chemical Shrinkage and Modulus Evolutions at Arbitrary Temperatures

摘要

We propose a generalized hybrid modeling to determine the chemical shrinkage and modulus evolution at arbitrary temperatures. Using the existing curing kinetics modeling, we have developed a theoretical formulation to provide a mathematical relationship between the evolution properties at arbitrary temperatures and those obtained at a reference temperature. The evolution properties at the reference temperature are obtained first by the fiber Bragg grating (FBG) sensor method. The activation energy of the evolution properties is determined from the supplementary curing extent data obtained at various temperatures using the differential scanning calorimeter (DSC). The shift factors are calculated from the activation energy, and the evolution properties at temperature range of interest are estimated from the reference properties using the shift factors.