以三氯氧磷、新戊二醇、9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO)、1,4-对苯醌等原料,反应合成了一种基于磷杂菲基团的新型无卤阻燃剂2-(6-氧-6H-二苯并-(c,e)(1,2)-氧磷杂己烷基)-1,4-二(5’,5’-二甲基-1,4-二氧杂己内磷酰氧基)苯(DP-POBQ).通过质谱(MS)、元素分析、傅立叶红外光谱(FT-IR)以及核磁共振波谱(1 H-NMR、31 P-NMR)等表征了目标化合物的结构,并讨论其在乙烯-醋酸乙烯酯(EVA)泡沫复合材料中的阻燃性能.热分析质谱联用测试(TG-Mass)表明该阻燃剂具有较高的热稳定性和良好的成炭性,热失重5％时的温度为260．2℃,1000℃时的残炭率可达19．1％.
2-(6-oxido-6Hdiben-(c,e)(1,2)-oxaphosphorin-6-yl)-1,4-bis(5’,5’-dimethyl-1,4-dioxaphosphori-nanyl-2-oxy)benzene (DPPOBQ),a novel halogen-free flame retardant with phosphaphenanthrene group,was synthesized via phospous oxychloride,neopentyl glycol,9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO)and 1 ,4-benzoquinone by a three step reaction.And the structure of DPPOBQ was characterized and studied by mass spectrometry (MS),elementary analysis,fourier transform infrared spectra (FT-IR),1 H and 31P nuclear magnetic resonance spectrum (1H-NMR,31P-NMR),respectively.Then the flame retardance in EVA foam composites was discussed.The results of TG-Mass show that the flame retardant has a high thermal stability and excellent char-forming ability.The 5% weight loss temperature of title compound was above 260.2 ℃ and the char yield was about 19.1% at 1 000 ℃.
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