Patent ID: 6291071
Filing Date: 2001-09-18
Classification: B29C,B32B,Y10T

Abstract:
A composite structure, comprising:a skin layer having a skin-layer surface and comprising a composite material of fibers embedded in a cyanate ester resin matrix, the cyanate ester matrix being a cured form of a matrix precursor curable at a first temperature and post-curable at a second temperature greater than the first temperature;a transition layer of a cured first epoxy resin, said first epoxy resin being co-cured and interdiffused with said cyanate ester resin and being a cured form of a first epoxy resin precursor curable at the first temperature and post-curable at the second temperature;a bonding layer of a second epoxy resin contacting and bonded to the transition layer at a bonding surface, the second epoxy resin being a cured form of a second epoxy resin precursor curable at a third temperature that is no greater than the first temperature; anda substrate bonded to the bonding layer.