以阻燃齐聚物(PSPTR)和酚醛树脂(PF)作为膨胀型阻燃剂(IFR)阻燃丙烯晴-丁二烯-苯乙烯共聚物(ABS),通过极限氧指数(LOI)和水平垂直燃烧(UL-94)测试研究了阻燃PSPTR-PF/ABS体系的阻燃性能.研究表明,当PSPTR:PF=1∶1(质量比),总质量分数为30％时,体系的LOI为28.2％,UL-94达V-1级别.采用热重-红外联用(TG-IR)技术探索了阻燃体系的热性能和热分解历程,发现PSPTR-PF阻燃剂的加入延缓了ABS的热分解,提高了ABS的热稳定性能.采用SEM、XRD和Raman光谱分析了燃烧炭层的形貌和结构.结果表明,PF不仅改善了炭层的致密度,而且完善了炭层的石墨结构,最终提高了ABS的阻燃性能.
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