Browse/search for people

Publication - Professor Ian Hamerton

    Atomic oxygen degradation mechanisms of epoxy composites for space applications

    Citation

    He, Y, Suliga, A, Brinkmeyer, A, Schenk, M & Hamerton, I, 2019, ‘Atomic oxygen degradation mechanisms of epoxy composites for space applications’. Polymer Degradation and Stability, vol 166., pp. 108-120

    Abstract

    The effects of atomic oxygen on three commercial composite materials, based on two space-qualified epoxy resins (tetraglycidyl-4,4′-diaminodiphenylmethane (TGDDM) cured with a blend of 4,4′-methylenebis(2,6-diethylaniline) and 4,4′-methylenebis(2-isopropyl-6-methylaniline); and a blend of TGDDM, bisphenol A diglycidyl ether (DGEBA), and epoxidised novolak resin initiated by N’-(3,4-dichlorophenyl)-N,N-dimethylurea) are studied. Samples were exposed to a total fluence of (3.82 × 1020atom/cm2), equating to a period of 43 days in low Earth orbit. The flexural rigidity and modulus of all laminates displayed a reduction of 5–10% after the first exposure (equivalent to 20 days in orbit). Fourier transform infrared (FTIR) spectra, obtained during prolonged exposure to atomic oxygen, were interpreted using multivariate analysis to explore the degradation mechanisms.

    Full details in the University publications repository