1. Introduction: HWR-128 is an unmodified liquid epoxy resin with medium viscosity produced from bisphenol-A and epichlorohydrin. This is a standard liquid epoxy resin and a wide variety of curing agents are available to cure this liquid epoxy resin at ambient conditions and also at elevated temperature. When cured with appropriate hardener, HWR-128 gives excellent mechanical, chemical, electrical and adhesion properties. Because of these properties it finds use in various