溴系阻燃剂对ABS阻燃及力学性能的影响

Flame retardancy and mechancial properties of ABS with brominated flame retardants

分别以十溴二苯乙烷(DBDPE)、溴代三嗪(FR-245)、六溴环十二烷(HBCD)为阻燃剂,三氧化二锑(Sb_2O_3)为协效剂,对丙烯腈-丁二烯-苯乙烯共聚物(ABS)进行阻燃改性。采用极限氧指数、垂直燃烧仪(UL-94)、扫描电子显微镜(SEM)、热重分析(TGA)、力学性能等手段研究了阻燃剂的种类和用量对ABS阻燃性能与力学性能的影响。结果表明,阻燃效率的排列顺序为DBDPE>HBCD>FR-245,而HBCD阻燃ABS复合材料的力学性能最佳。

Acrylonitrile-butadiene-styrene copolymer(ABS)was modified with decabromodiphenyl ethane(DBDPE),hexabromocyclododecane(HBCD),tri(tribromophenyl)cyanurate(FR-245)as flame retardant,respectively,and antimony trioxide(Sb2O3)as synergist.The effects of type and content of flame retardant on the flame retardant properties and mechanical properties of the composites were studied by means of Limited oxygen index(LOI),UL-94 vertical burner,scanning electron microscopy(SEM)and thermogravimetric analysis(TGA).The results showed that the order of flame-retardant efficiency was that DBDPE >HBCD >FR-245,while the HBCD flame-retardant ABS composites exhibited the best mechanical properties.