Improving the Measurement of Prepreg Viscosity, Gel and Cure Using an Encapsulated Specimen Rheometer
The ATD (an encapsulated specimen rheometer that meets ASTM D7750) is used to measure the cure of prepregs under various processing conditions from isothermal to various temperature ramps and various hold temperatures using viscoelastic properties. The results show the effect of these parameters on the gel point, cure times and the resulting modulus. Studies over the last few years have verified the capability of the system to measure the gel point, cure and Tg of prepregs.
Author: Henry Pawlowski
Conference: SAMPE Seattle 2017