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用二甲苯作溶剂,二氯磷酸苯酯与二乙烯三胺共聚合成了二氯磷酸苯酯-二乙烯三胺共聚物阻燃剂。采用正交设计方法对物料摩尔比、反应温度、溶剂用量进行了考察。结果表明:最佳n(二乙烯三胺)∶n(二氯磷酸苯酯)=1.21∶1,最佳反应温度为100~110℃,溶剂用量50 mL,反应时间9 h,最高产率72.4%。通过FTIR、1HNMR对共聚物的分子结构进行了表征,并通过TGA考察了其热稳定性。当w(聚磷酸铵)=10%,w(共聚物)=15%应用于低密度聚乙烯(LDPE),可使氧指数达到26,垂直燃烧达到UL-94 V-0级,满足了聚烯烃电线电缆及管材的阻燃要求。
With xylene as solvent, dichloro-phenyl phosphate and diethylenetriamine copolymerization of dichloro-phenyl phosphate - diethylenetriamine copolymer flame retardant. Orthogonal design method was used to investigate the molar ratio of materials, reaction temperature and the amount of solvent. The results showed that the best n (diethylenetriamine): n (phenyl dichlorophosphate) = 1.21:1, the optimal reaction temperature was 100 ~ 110 ℃, the amount of solvent was 50 mL, the reaction time was 9 h and the highest yield was 72.4 %. The molecular structure of the copolymer was characterized by FTIR and 1HNMR, and its thermal stability was investigated by TGA. When w (ammonium polyphosphate) = 10% and w (copolymer) = 15% were applied to low density polyethylene (LDPE), the oxygen index reached 26 and the vertical burning reached UL-94 V-0. Flame-retardant requirements of olefinic wire and cable and pipe.