Mechanistic study of thermal behaviour and combustion performance of carbon fibre-epoxy resin composites fire retarded with a phosphorus-based curing system

摘要: Abstract The fire retardant action in epoxy resins based on tetraglycidyl 4,4'-diaminodiphenylmethane (TGDDM) either alone or combined with the diglycidylether of bisphenol A (DGEBA), cured bis(m-aminophenyl)methylphosphine oxide (BAMPO) was studied. Comparison oxygen index (OI) and nitrous suggests a condensed phase mechanism. yield intumescent char continuously increases providing polymer shielding upon increasing concentration retardants. In composite carbon fibres play role inert fillers combustion test with, however, fibre orientation having an important effect. suppress intumescence behaviour char. chemical mechanism thermal degradation charring is studied using thermogravimetry, volatilisation analysis, characterisation by FTIR, solid state NMR, X-ray, EPR elemental analysis.