间苯二酚-双[二(季戊四醇)]磷酸酯的合成、表征和热稳定性

Synthesis,characterization and thermal stability of resorcinol bis[di(pentaerythritol phosphate)] phosphate

采用季戊四醇、三氯氧磷和间苯二酚为反应物,合成了新型添加型阻燃剂:间苯二酚-双[二(季戊四醇)]磷酸酯(RBPP),通过元素分析、FTIR和1H NMR等测试技术表征了标题化合物的结构,结果表明,所合成的标题化合物的结构与预期的结构一致。热失重分析结果证明,RBPP质量损失5%时的温度在350.0℃,600℃残炭率高达57.4%,具有较高的热稳定性能。阻燃性能实验证明,E-51环氧树脂中添加质量分数为15.2%的RBPP时,极限氧指数达31.8%,UL-94为V-0级。

A novel phosphorus-containing flame retardant,resorcinol bis[di（2,6,7-trioxa-1-phosphabicyclo -octane-1-oxo-4-hydroxymethyl）] phosphate（RBPP）was synthesized from pentaerythritol,phosphorus oxychloride and resorcinol.The title compound was characterized by elemental analysis,FTIR,and 1H NMR.The results showed that the structure of the title compound was consistent with expectation.Thermogravimetry（Tg）investigation on thermal stability of RBPP showed that mass loss of 5% was at about 350 ℃ and residue at 600 ℃ was as high as 57.4%.The limiting oxygen index（LOI）value coulds reach 31.8% and flame retardancy was UL-94 V-0 when mass fraction in E-51 epoxy resin was 15.2%.