新型耐热材料芳基乙炔聚合物的性能  

Properties of novel heat resistant polyarylacetylene

作　　者：丁学文 庄元其[2] 王俊[2] 

机构地区：[1]上海新天和树脂有限公司,上海201404 [2]华东理工大学材料学院,上海200237

出　　处：《合成树脂及塑料》2004年第5期50-53,共4页China Synthetic Resin and Plastics

摘　　要：合成了具有耐高温性能的芳基乙炔聚合物(PAA),并对其性能进行了研究。芳基乙炔预聚物粘度低,在室温下储存稳定性较差,可加热直接固化,300℃可完全固化。固化后,PAA的玻璃化转变温度为316.3℃,起始热分解温度高达503℃,最大热分解温度为663℃,900℃时残碳率为84％。PAA可以作为新型耐烧蚀材料使用。A kind of novel heat resistant polyarylacetylene (PAA) resin was synthesized. The resultant PAA was characterized by viscometry, Fourier transform infrared spectrometry (FTIR), thermal mechanical analysis (TMA) and thermogravimetry (TG). The results show that the PAA prepolymer has low viscosity and inferior stability at ambient temperature. It can be cured directly by heating and thoroughly cured at 300℃. The cured PAA has glass transition temperature of 316.3℃, initial thermal decomposition temperature of up to 503℃ and maximum decomposition temperature of 663℃. The charing yield of PAA at 900℃ attains 84%. For its excellent heat resistance and high charing yield, PAA can be used as heat resistant material, particularly as ablation resistant material.

关 键 词：新型 耐热材料 芳基乙炔聚合物 预聚物 残碳率 固化 热分解温度 PAA 玻璃化转变温度 合成 

分 类 号：O631[理学—高分子化学]