聚芳氧基磷腈的合成及热稳定性的研究  

Synthesis of polyaryloxyphosphazene and their thermal properties

作　　者：贺敏岚 刘鹏[1] 董岩[1] 付凤艳 朱长进[1] 

机构地区：[1]北京理工大学化工与环境学院,北京100081

出　　处：《化工新型材料》2014年第1期146-148,共3页New Chemical Materials

摘　　要：以聚二氯磷腈为主要原料,制备了3种不同的类型的聚芳氧基磷腈聚合物。通过1 H-NMR对高分子结构进行了表征。通过热失重分析研究了高分子在不同条件下的热失重行为;比较了芳环上不同类型的取代基团对高分子热稳定性的影响。结果表明,在氮气条件下3种类型的聚合物都具有较高的初始分解温度;且供芳环上有电子基团的存在有利于提高聚合物材料的热稳定性;空气条件下的热重研究表明,卤素原子的存在,会减缓高分子材料在高温阶段的热分解速率。A series of polyaryloxyphosphazene were synthesized with polydicholophosphazene as the precursor materials. Their structures were confirmed by ^1H-NMR. Furthermore, their thermal properties were studied by thermogravimetric analyzer （TGA）. The effects of the substituent groups of the aromatic ring on the thermal stability of polymer were discussed. The TGA results showed these polymers possessed high thermal stability in nitrogen atmospheres with high initial thermal decomposition temperatures. The presence of electron donating group would improve the thermal stability of these polymers. The TGA curves in air suggested that the presence of halogen group can slow down the rate of the thermal decomposition in high temperature range.

关 键 词：聚磷腈 热稳定性 吸电效应 供电效应 

分 类 号：TQ317[化学工程—高聚物工业]