HYgrothermal Aging Properties Of Epoxy Matrix For Composite Core

Under conditions of high temperature and high humidity, the moisture absorbing behavior of epoxy resin SUR-2 casting matrix for composite core was investigated, and the variation of the mechanical properties and the heat deformation temperature with hygrothermal aging were researched, The results show that the moisture-absorption behavior of the casting resin followed the Fick law. The mechanical properties and heat deformation temperature decreased with aging, but the behaviors recovered partly after drying.