CURING STUDIES OF EPOXY-RESIN WITH NADIC ENDCAPPED PHOSPHORYLATED AMINES

Polyimides have aromatic moieties in the backbone structure which are responsible for their increased thermal stability. If phosphorus is in troduced in the main chain structure of polyimides, there is further i mprovement in the thermal stability. This has been proved by the work carried out in our group. The polyimide having amine termination can b e used for crosslinking of epoxy resins.In the present study amine ter minated phosphorus containing nadicimide were taken as curing agent fo r DGEBA resins. The curing characteristics of DGEBA resin were studied by DSC using different amounts of nadic endcapped phosphorylated amin es. DSC thermogram showed the heat of polymerization was lower as comp ared to system cured with aromatic amines.