Improvement of flame retardancy for hybrid composite material by using zinc borate

الملخص EN

Zinc borate was added as a surface layer of (4mm) thickness on the surface of araldite resin reinforced by woven roving carbon-kevlar fibers.

This system was exposed under different exposure intervals (10,15, and 20mm) to a direct flame which generated from oxyacetylene and gas flame (3000ºC, 2000ºC) respectively, and study the range of resistance of flame retardant material layer to the flames and protected the substrate.

Surface temperature opposite to the flame method was used to measuring the temperature transferred through this system.

The experimental results show that a great increment in thermal resistance and flame retardancy after coating by zinc borate and the best percentage was (20 %) from zinc borate, as well as rising flame resistance increased exposure intervals to flame .