新型无卤阻燃增韧高抗冲聚苯乙烯的制备

Preparation of new halogen free toughening flame retardant HIPS

研究了新型无卤阻燃增韧高抗冲聚苯乙烯(HIPS)的制备方法,并考察了阻燃剂配方及用量对HIPS阻燃性能的影响;同时,对HIPS进行增韧改性,探讨在最佳阻燃剂配方中添加增韧剂——聚氨酯与热塑性弹性体混合物(PU/SEBS)对HIPS阻燃及抗冲击性能的影响。结果表明:三聚氰胺尿酸盐与白度化红磷阻燃剂体系具有很好的协效阻燃作用;添加PU/SEBS可以显著提高HIPS的悬臂梁缺口冲击强度,当PU/SEBS,HIPS,阻燃剂,磷酸三苯酯助剂,硼酸锌质量比为15∶45∶30∶7∶3时,制备的无卤阻燃增韧HIPS复合材料具有优异的阻燃性能,而且可保持较高的冲击强度。

This paper presents the preparation of new halogen free toughening flame retardant high impact polystyrene（HIPS）. The influence of the formula and the amount of flame retardant on HIPS are investigated as well; polyurethane resins /thermoplastic elastomers（PU-SEBS）mixture is used as toughening agent to explore its contribution to flame retardance and impact resistance of HIPS. The research results indicate that melamine urate（MCA）/whitened red phosphorus flame retardant system exhibits excellent synergistic effect; the introduction of PU-SEBS significantly improve the notch impact strength of HIPS resin, which shows excellent flame retarding abilities as well as high impact strength when the mass ratio of PU-SEBS/HIPS/flame retardant/triphenyl phosphate/zinc borate is15∶45∶30∶7∶3.