IFR阻燃ABS体系燃烧性能的研究

Study on Flame Retardant of IFR/ABS Composites

以均匀设计数学模型为基础，利用计算机辅助系统（CAD），研究膨胀阻燃剂（IFR）三组分，聚磷酸铵（APP）、季戊四醇（PER）、三聚氰胺（MEL）对ABS阻燃性能的影响，体系中IFR质量分数为30％。结果表明：MEL用量为30份，APP／PER的质量比约为2／1时，垂直燃烧（UL-94）难燃级别可以达到V-0级；固定APP／PER的质量比为2／1，随着MEL用量的增加，极限氧指数（LOI）降低，UL-94垂直燃烧时间增大；通过实验观察，提出“T型头”和“火焰簇”两种燃烧现象，并利用IFR阻燃机理，解释了LOI与UL-94形成竞争关系的原因。

In this paper, CAD system and the mathematical model of homogeneous design was used. The effect of flame retarding ABS with 3 component of IFR which included APP, PER and MEL was re-searched, and the adding amount of IFR was 30 wt%. The results showed that： when the content of MEL was 30 phr, and the mass radio of APP and PER was 2/1, the vertical burning （UL-94） flame retardant levels of ABS achieved at V-0. When the mass ratio of APP and PER was 2 ： 1, the limiting oxygen index （LOS） decreased, and UL-94 vertical combustion time increased, with the MEL content increasing. Though experimental observation, the ＂T-head＂ and ＂flame cluster＂ of two combustion phenomena was proposed, and used IFR flame retardant mechanism to explain the reason of LO! and UL-94 competition.