The low thermal resistance of polymeric materials to high temperatures considered
the main limitation to used these materials in such applications required high thermal
resistance ,so ,the present research aimed to study the possibility to increasing flame
retardancy of advanced polymeric composite materials reinforced by fibers by
coating by a flame retardant layer represent antimony tetroxide (Sb2O4) as a coating
layer (4mm) thickness to react and prevent spread of flame on surface of composite
material consist of araldite resin(AY103) reinforced by woven roving carbon - Kevlar
fibers (0°-45°) and exposed this coating layer to direct flame generated from
oxyacetylene flame with different exposure distances (10mm,15mm,20mm) and
study the range of resistance of flame retardant material layer to the flames and
thermal resistance and flame retardancy after coating by antimony tetroxide as well
as rising flame resistance increased exposure distances to flame .