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含能材料  2010 

NEPE推进剂/衬层/绝热层界面迁移组分定量分析

DOI: 10.3969/j.issn.1006-9941.2010.03.020

Keywords: 高分子化学,NEPE推进剂,界面,迁移,定量分析,高效液相色谱(HPLC),气相色谱(GC)

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Abstract:

应用高效液相色谱(HPLC)、气相色谱(GC)对含硝酸酯的聚醚(NEPE)推进剂/端羟基聚丁二烯(HTPB)衬层/三元乙丙橡胶(EPDM)绝热层Φ25圆柱标准粘接试件粘结界面主要迁移组分进行了定量分析研究。研究结果表明,HPLC适合于同时测定粘接界面主要迁移组分增塑剂硝化甘油(NG)、丁三醇三硝酸酯(BTTN)、功能助剂AD;GC法适合于测定增塑剂癸二酸二辛酯(DOS)。采用建立的相应方法测定衬层中这四个组分,结果变异系数小于6%,样品回收率大于90%,测定方法准确度和精密度可满足一般测定要求。样品测定结果表明,推进剂中的NG、BTTN、AD可向衬层和绝热层迁移,其中衬层中含量较高,AD比NG、BTTN迁移更为明显,且AD易在衬层富聚。衬层中的DOS则只向绝热层迁移,不向推进剂迁移。

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