PC/aBS alloys have excellent overall properties. Although the PC itself has a certain flame retardancy (LOI = 25%), the flame retardancy is degraded after blending with aBS. In order to meet the application of PC/aBS alloys in electronics, electrical switches, electrical appliances, etc., flame retardants must be added. Flame retardants commonly used in commercial flame retardant PC/aBS alloys are brominated flame retardants such as brominated epoxy resins, brominated polycarbonates, brominated polystyrene, decabromodiphenylethane; phosphate esters. It is a flame retardant. Such as TPP, RDP, BaPP; phosphorus-bromo structure flame retardant, such as tris(2,4-dibromophenyl phosphate), the trade name is KroitePB--460. Their flame retardant PC/aBS alloys each have their own characteristics.
A comparative test was conducted on the flame retardant used in the flame retardant PC/aBS alloy. The results show that when the PC/aBS mass ratio is 7:3. Adding about 3% of the flame retardant PC/aBS alloy to the bromine-based flame retardant can make the flame retardant performance of the material reach UL-94V-0 (1.6nun); the phosphate ester flame retardant is resistant to aBS The burning effect is not good. Only when the PC mass fraction is more than 70% in the material, the flame retardant effect is obtained: with the bromine monophosphate flame retardant, even if the PC mass fraction of the material is 50%, the uL- can be achieved. 94V-O grade (1.6mm), indicating that phosphorus and bromine have synergistic effect in PC/aBS alloy, and phosphate ester flame retardant is compounded with bromine flame retardant in flame retardant PC/aBS alloy. . There are similar effects.
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