无卤阻燃PC/ABS二元合金的研发

Development of Halogen-free Flame Retardant PC/ABS Alloy

用PC、ABS、MBS、SMA,阻燃剂经双螺杆挤出机熔融共混制备了PC/ABS二元合金。结果表明:当PC含量50%时,PC/ABS二元合金的冲击韧性最佳;磷系阻燃剂RXP对PC/ABS有良好的阻燃作用,添加量为14%时阻燃可达UL94 V0(1.5 mm);增容剂SMA可提高PC/ABS合金的冲击强度;增韧剂MBS可使PC/ABS合金得拉伸强度降低。

PC/ABS alloy was prepared by melt blending of PC,ABS,MBS,SMA,flame retardant by twin screw extruder.The results show that when the content of PC is 50%,the impact toughness of PC/ABS binary alloy is the best,the phosphorus flame retardant RXP has a good flame retardant effect on PC/ABS,and the flame retardant can reach UL94 V0(1.5 mm)when the content of UL94 is 14%.The impact strength of PC/ABS alloy can be improved by SMA,and the tensile strength of PC/ABS alloy can be reduced by toughener MBS.