MPPO (modified polyphenylene oxide) composite material and preparation method thereof

The invention discloses an MPPO (modified polyphenylene oxide) composite material which comprises, by weight, 45-70 parts of PPO (polyphenylene oxide), 10-25 parts of polystyrene, 3-18 parts of flame retardants, 2-10 parts of toughening agents, 0.1-1 part of antioxidant, 0.1-1 part of sulfide and 0.1-1 part of oxide. The viscosity of the PPO is 40-45dl/g. The invention further provides a preparation method of an MPPO material which is high in impact strength, heat resistance and CTI (comparative tracking index) and good in halogen-free flame retardant effect. The composite material can pass a 125 DEG C ball indentation test, is uniform in comprehensive performance and can be widely applicable to the electronic and electrical appliance fields such as shells of electronic products and glue filling boxes of computer control systems. 本发明公开了种MPPO复合材料，所述材料包括以下重量百分比含量的原料组分：PPO45～70重量份，聚苯乙烯10～25重量份，阻燃剂3～18重量份，增韧剂2～10重量份，抗氧剂0.1～1重量份，硫化物0.1～1重量份，氧化物0.1～1重量份，所述的PPO粘度为40-45dl/g。本发明还提供了高冲击高耐热高CTI值无卤阻燃MPPO材料的方法。本发明复合材料的冲击强