【摘要】 将水镁石、氢氧化铝（ATH）、聚磷酸铵（APP）这3种阻燃剂复配,并应用于不饱和聚酯树脂（UPR）,得到阻燃型UPR复合材料。通过氧指数、垂直燃烧（UL94）、烟密度等级（SDR）、DSc-TG对阻燃复合材料的阻燃、抑烟及热稳定性能进行了研究,结果表明,在该复配阻燃体系中,水镁石、ATH、APP三者存在明显的协效作用,在水镁石：ATH：APP为2：1：1（质量比）、复合阻燃剂含量为40%时,复合材料氧指数达33．8%,垂直燃烧达FV-0级,烟密度等级为56．74,满足国家B₁级电器类热固性塑料的使用要求。更多还原

【Abstract】 Flame-retarded UPR composites were prepared by introducing brucite,aluminum hydroxide （ATH）,and ammonium polyphosphate（APP） into unsaturated polyester resin（UPR）.Flame retardan- cy,smoke suppression,and thermal stability were studied by limiting oxygen index（LOI）,UL94 flame retardancy,smoke density rate（SDR）,and DSC-TG.The results indicated that a synergistic flame-re- tarding effect was generated among brucite,ATH,and APP.When the loading of the flame-retarding system （brucite:ATH:APP=2:1:1） was introduced,LOI of 33.8 %,UL94 of FV-0,and SDR of 56.74 were achieved.These properties met the requirements for thermoset wiring of B₁ rate.更多还原