Differential Scanning Calorimetry as a Quality Control Method for Epoxy Resin Prepreg

摘要

Differential scanning calorimetry is a reliable and effective method for the quality control of an epoxy resin prepreg material. There are two basic methods for determining the extent of cure for this material, the glass transition temperature and the heat of reaction. The first method requires the measurement of the glass transition temperature for the uncured material and the glass transition temperature for a fully cured material. This data can then be used to determine the degree of cure for an unknown sample. The second method requires the measurement of the enthalpy of the cure reaction for an uncured material and relates this value to the enthalpy of a sample. The use of one or both of these methods can be used to evaluate an epoxy resin to determine the extent of cure of the material. (aw)