SURFACING FILM FOR COMPOSITE STRUCTURES AND METHOD OF MAKING THE SAME

摘要

A surfacing film is formed from a curable resin composition containing an epoxy novolac resin a tri functional or tetra functional epoxy resin ceramic microspheres an amine based curing agent particulate inorganic fillers; and a toughening component. The surfacing film exhibits high T and high cross linked density after curing as well as high resistance to paint stripper solutions. The surfacing film is suitable for co curing with fiber reinforced resin composite materials. The surfacing film may optionally contain electrically conductive additives to provide sufficient conductivity for lightning strike protection (LSP) or electromagnetic interference (EMI) shielding.