中文摘要：

将无水CuCl2、无水AlCl3、无水FeCl3、无水MnCl2,无水MgCl2和无水ZnCl2加入到双酚A-苯胺型聚苯并恶嗪中,通过红外光谱（FTIR）,核磁共振氢谱（1H-NMR）,热失重分析（TGA）和元素分析等手段,研究了加入金属盐对聚苯并恶嗪热稳定性的影响及作用机理。结果表明,加入金属盐后聚苯并恶嗪的热稳定性均有不同程度的提高。无水MnCl2、无水ZnCl2和无水MgCl2配位能力较弱,苯并恶嗪主要发生热固化反应生成酚羟基邻位Mannich桥结构。无水CuCl2、无水AlCl3和无水FeCl3配位能力较强,能催化苯并恶嗪生成较多的苯胺对位Mannich桥结构。正是固化物中较多的苯胺对位连接结构,有效抑制了高温下苯胺衍生物的形成和挥发,从而赋予了聚苯并恶嗪更高的热稳定性。

英文摘要：

The anhydrous CuCl2,AlCl3,FeCl3,MnCl2,MgCl2 and ZnCl2 were added to the bisphenol A-aniline based polybenzoxazines.The effects of metal salts on the thermal stability of polybenzoxazines and the mechanism were investigated by Fourier transform infrared（FTIR） spectroscopy,1H nuclear magnetic resonance（1H NMR） spectroscopy,thermo-gravimetric analysis（TGA） and element analysis.The results showed that the thermal stabilities of polybenzoxazines with metal salts were increased in various degrees.The thermal curing reaction occured mainly for benzoxazine and the Mannich bridge structure on o-phenolic hydroxyl was formed because of the weak coordination of MnCl2,MgCl2 and ZnCl2.The CuCl2,AlCl3 and FeCl3 had strong coordination abilities and the benzoxazines could be catalysted to generate more Mannich bridge structure on the para position of aniline.It was more connection structure on the para position of aniline of the cured product that effectively inhibited the formation and evaporation of aniline derivatives at high temperatures which gived the polybenzoxazine higher thermal stability.