纳米级碳酸铅在NEPE推进剂中的应用

Effects of nanometer PbCO 3 on combustion behavior of NEPE propellant

关键词:  固体推进剂  聚醚推进剂  燃烧催化剂  燃速调节剂  推进剂燃速系数  热分析

Key words:  Solid propellant  Polyether propellant  Combustion catalyst  Burning rate modifier  Propellant burning rate  Thermal analysis

摘要:

研究了纳米级碳酸铅对NEPE推进剂燃速压力指数的影响。采用DSC分析了纳米级碳酸铅与NEPE推进剂主要组分硝酸酯的相容性以及对推进剂固化反应的催化作用和对高氯酸铵、硝胺常压热分解的催化作用,并利用恒压静态燃速仪测试了推进剂在4MPa～11MPa的燃烧速度和燃速压力指数。发现纳米级碳酸铅表现出与硝酸酯良好的相容性,对推进剂的固化反应和硝胺的热分解均有很强的催化作用,对高氯酸铵的热分解则没有明显的影响。当纳米级碳酸铅应用到NEPE推进剂中时,推进剂的燃速压力指数显著降低,含量为1%和2%时分别降至054和052

Abstract:

The effects of nanometer PbCO 3 on combustion behavior of NEPE solid propellant have been studied The compatibility of nanometer PbCO 3 and nitrate ester , as well as the effects of nanometer PbCO 3 on the curing reaction and on the thermal decomposition behaviors of ammonium perchlorate and nitroamino compounds were studied by Differential Scanning Calorimetry (DSC) It was found that nanometer PbCO 3 exhibited good compatibility with nitrate ester which had observable acceleration on the thermal decomposition of nitroamino compounds and on the curing reaction but little effect on ammonium perchlorate When nanometer PbCO 3 was applied to NEPE solid propellant, the pressure exponent were effectively brought down to 0 54 and 0 52 with which content was 1% and 2%respectively