IMPROVING THERMAL RESISTANCE FOR COMPOSITE MATERIAL REINFORCED BY FIBERS BY USING FLAME RETARDANT MATERIAL LAYER

Abstract

In this research we studied the effect of flame retardant material addition which is zinc borate on the flame resistance for composite material consist of phenol formaldehyde resin reinforced by woven roving carbon fiber(0O-90O) with (225g/cm3) density . where we added zinc borate as a protected surface layer from direct flame with (4mm) thickness on the surface of composite material and measuring the rang of its thermal resistance by applied thermal erosion test , which included exposition the flame retardant layer direct flame gas torch (butane-propane) with different exposed distances (10mm ,15mm ,20mm,25mm) and study the influence one substrate composite material as illustrated in the diagrams between surface temperature and time .