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含能材料  2013 

含能粘结剂丙烯酸偕二硝基丙酯-乙酸乙烯酯共聚物的合成及性能

Keywords: 高分子化学,丙烯酸偕二硝基丙酯,乙酸乙烯酯,溶液共聚合,含能粘结剂

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Abstract:

以丙烯酸偕二硝基丙酯(DNPA)和乙酸乙烯酯(VAc)为单体,偶氮二异丁腈为引发剂,乙酸乙酯为溶剂,合成了含能粘结剂DNPA-VAc共聚物。讨论了单体配比、引发剂用量和反应时间对共聚反应的影响。采用FT-IR、1HNMR、DSC、TG等方法研究了DNPA-VAc共聚物的结构和性能。研究结果表明,DNPA和VAc的投料摩尔比为31,在80℃下反应8h,获得共聚物产率为72%。DNPA-VAc共聚物的玻璃化温度是59.7℃,热分解峰温为259.1℃,放气量1.7mL·g-1,真空安定性好,与RDX和HMX相容,是较稳定的聚合物。

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