Study the Synergetic Activity of Aluminium Tri Hydroxide with Zinc Oxide as Flame Retardants for Unsaturated Polyester Resin


In this work, aluminum tri hydroxide (I), zinc oxide (II) and their mixture (1:1) (III) were used as flame retardants for unsaturated polyester resin in the weight ratios of (0, 2, 4, 7, 10, and 12) %, by preparing films of (130*130*3) mm in dimensions.Three standard test methods used to measure the flame retardation which are: ASTM: D-2863 to measure the limiting oxygen index (LOI), ASTM: D-635 to measure the rate of burning (R.B) & ASTM: D-3014 to measure the maximum height of flame (H). Results obtained from these tests indicated that; ATH, ZnO and their mixture have a good effect as flame retardants for unaturated polyester resin. The synergetic effect was the best.