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以双酚芴和苯基膦酰二氯为原料,采用溶液聚合法合成了聚苯基膦酸二苯芴酯(PFPPP)。采用FTIR、1H-NMR和31P-NMR对PFPPP的结构、组成进行了表征,GPC和TGA分别对PFPPP的相对分子量、热稳定性能进行了表征,结果表明:成功合成了聚苯基膦酸二苯芴酯,其数均分子量可达11万,分子量分布为1.26,分布较窄;聚苯基膦酸二苯芴酯的初始分解温度为286℃,分解温度分布较宽,于845℃时PFPPP的成炭率高达45%。此外,对PFPPP在PC、PC/ABS体系的阻燃性能进行了测试,研究发现PFPPP在PC体系中的添加量(ω)为3%、PC/ABS体系中ω为5%时,两者阻燃级别均达到V-0级;当ω为10%时,PC的氧指数由25%提高到31%,可见PFPPP的添加提高了PC、PC/ABS的阻燃性能。
Using bisphenol fluorene and phenylphosphonic dichloride as raw materials, diphenylfluorene polyphenylphosphinate (PFPPP) was synthesized by solution polymerization. The structure and composition of PFPPP were characterized by FTIR, 1H-NMR and 31P-NMR. The relative molecular weight and thermal stability of PFPPP were characterized by GPC and TGA, respectively. The results showed that PFPPP was successfully synthesized, Fluorene esters, the number average molecular weight of up to 110,000, the molecular weight distribution of 1.26, the distribution is narrow; polyphenylphosphonic acid dibenzofluorene ester of the initial decomposition temperature of 286 ℃, the decomposition temperature distribution is broad, at 845 ℃ PFPPP Carbon rate up to 45%. In addition, the flame retardancy of PFPPP in PC, PC / ABS system was tested. The results showed that when PFPPP was added to PC system at 3% and PC / ABS at 5% When the omega is 10%, the oxygen index of PC is increased from 25% to 31%. The results show that the addition of PFPPP improves the flame retardancy of PC and PC / ABS.