阻燃剂聚季戊四醇磷酸酯的合成及表征
Fine Chemical Intermediates(2006)
Abstract
以季戊四醇、三氯氧磷为原料,采用无溶剂法首先合成了季戊四醇二磷酸酯二磷酰氟(PDD),n(季戊四醇):n(三氯氧磷)=1:5,收率为84%;然后以PDD和对苯二酚为原料,乙腈为溶剂,三乙胺为缚酸剂,在氮气氛围下合成了低聚阻燃剂聚季戊四醇磷酸酯,n(PDD):n(对苯二酚)=1:1,收率为79%.采用红外光谱、磷谱、热重分析和差示扫描量热法对聚合物的结构和热行为分别进行了表征和研究.结果表明,该聚合物具有较高的玻璃态转变温度(Tg=231℃),聚合物质量损失5%时的温度为301℃.当聚合物被加热到600℃时,其炭残留物的质量分数为46.4%.
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Key words
char residue,flame retardant,polymeric pentaerythrityl phosphate,glass transition temperature,synthesis
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