Estimation of thermo-mechanical and fire resistance profile of epoxy coated polyurethane/fullerene composite films

Novel polyurethane (PU) was prepared and reinforced with fullerene C-60 (1-10wt.%). An epoxy, diglycidyl 1,2-cyclohexanedicarboxylate, was coated on PU/Full-C60 films using dip coating technique. Epoxy coated PU/Full-C60 revealed dense and consistent network morphology of epoxy-polyurethane with embedded fullerene nanoparticles. Epoxy coated PU/Full-C60 1-10 films showed higher values of tensile strength 86.9-90.3MPa (79% increase relative to PU) and tensile modulus 33.3-47.6GPa. In Epoxy coated PU/Full-C60 1-10, T-max was increased to 521 degrees C and char yield to 45%. Moreover increasing fullerene content decreased PHRR from 302 to 138kW/m(2), i.e., 55% reduction in flammability than PU. [GRAPHICS] .