纳米铝热剂制备、表征及在微推进阵列中的应用研究
发布时间：2018-09-03 09:52
【摘要】：随着微小型卫星的迅速发展,用于微小卫星姿轨控的微推进技术成为研究热点。本文针对固体化学微推进器点火桥与推进剂点火匹配性以及微装药方法需求,完成了以下主要研究工作：在充分了解纳米铝热剂的制备、表征方法和主要应用的基础上,挑选出四种有发展前景的纳米铝热剂Al/Bi2O3、Al/CuO、Al/Fe2O3和Al/MoO3,再通过它们的热性能,点火性能和燃烧性能进行进一步分析,筛选出兼顾点火可靠性、安全性与高比冲的纳米铝热剂Al/CuO。通过常温固相法制备合成纳米Al/CuO中的CuO,在通过超声共混法制备纳米Al/CuO,并对其结构和点火性能进行表征,实验结果表明固相法合成的CuO粒径在100nnm左右,性能比较活泼,与纳米Al粉在超声共混法下两种纳米粒子相互包覆,混合均匀,并比较了固相法合成的纳米CuO与普通纳米CuO与相同纳米A1粉制备的纳米铝热剂的性能,结果表明,用固相法合成的纳米CuO制备的纳米铝热剂反应活性大,用其制备的纳米铝热剂燃烧较稳定。将喷墨打印和湿法压装相结合进一步优化微装药方法,有效提高了装药密度,研究了NC、PVB和GAP三种含能油墨载体对装药效果的影响和装药后点火燃烧性能的影响,优选出NC最适合用作含能油墨的载体。初步研究了电泳沉积法制备纳米Al/CuO,结果表明,电泳沉积是一种新颖的制备纳米铝热剂的方法。同时,该方法最大的优势在于沉积的纳米铝热剂形状与电极基底一致性较好,有望用于微尺度异型结构的装药。利用喷墨打印装药实现了微推进器阵列装药,并研究铝热剂Φ值、含能油墨载体含量以及原料粒径对微孔中纳米铝热剂的激光点火燃烧性能,实验结果表明铝热剂最优Φ值为1.6,载体NC含量最优为7.5%,在最优的配方多次喷墨打印微孔装药药剂燃烧产生的冲量约为145μ,N.s。
[Abstract]:With the rapid development of micro-satellites, micro-propulsion technology for micro-satellite attitude-orbit control has become a research hotspot. In order to meet the requirements of matching the ignition bridge of solid chemical micropropeller with propellant ignition and the method of micro-charge, the following main research work has been accomplished in this paper: on the basis of fully understanding the preparation, characterization methods and main applications of nano-aluminothermic agents, Four promising nano-aluminotherms, Al/Bi2O3,Al/CuO,Al/Fe2O3 and Al/MoO3, were selected for further analysis through their thermal properties, ignition properties and combustion properties, and the nano-aluminothermic agents Al/CuO., which considered the ignition reliability, safety and high specific impact, were selected for further analysis. The CuO, of nanometer Al/CuO was prepared by solid state method at room temperature. The structure and ignition properties of Al/CuO, were characterized by ultrasonic blending method. The experimental results showed that the size of CuO synthesized by solid phase method was about 100nnm, and the properties of CuO were active. The nano-aluminotherms prepared by solid phase synthesis of nanometer CuO and ordinary nanometer CuO and the same nano-Al powder were compared with each other by ultrasonic blending method. The results showed that the properties of nano-aluminotherms prepared by solid phase method were compared with those of nano-particles prepared by solid phase method. Nanocrystalline aluminotherms prepared by solid phase CuO have high reaction activity, and the combustion of nanocrystalline aluminotherms prepared by nanocrystalline aluminotherms is stable. The combination of inkjet printing and wet pressing can improve the charge density effectively. The influence of three kinds of energetic ink carriers, NC,PVB and GAP, on the charge effect and the ignition and combustion performance after charge are studied. NC is the most suitable carrier for energetic ink. The results of electrophoretic deposition showed that electrophoretic deposition was a novel method for preparing nanocrystalline aluminotherms. At the same time, the advantage of this method is that the shape of the deposited nano-aluminothermic agent is consistent with the electrode substrate, and it is expected to be used in the charge of microscale heterogeneous structure. The micro propeller array charge was realized by ink-jet printing charge, and the combustion properties of Aluminothermic agent 桅, the content of energetic ink carrier and the particle size of raw material to the laser ignition of nano-aluminothermic agent in the micropore were studied. The experimental results show that the optimum 桅 value of the aluminothermic agent is 1.6, the NC content of the carrier is 7.5, and the impulse produced by the combustion of the microporous charge in the optimum formulation is about 145 渭 n 路s.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB383.1;V51
[Abstract]:With the rapid development of micro-satellites, micro-propulsion technology for micro-satellite attitude-orbit control has become a research hotspot. In order to meet the requirements of matching the ignition bridge of solid chemical micropropeller with propellant ignition and the method of micro-charge, the following main research work has been accomplished in this paper: on the basis of fully understanding the preparation, characterization methods and main applications of nano-aluminothermic agents, Four promising nano-aluminotherms, Al/Bi2O3,Al/CuO,Al/Fe2O3 and Al/MoO3, were selected for further analysis through their thermal properties, ignition properties and combustion properties, and the nano-aluminothermic agents Al/CuO., which considered the ignition reliability, safety and high specific impact, were selected for further analysis. The CuO, of nanometer Al/CuO was prepared by solid state method at room temperature. The structure and ignition properties of Al/CuO, were characterized by ultrasonic blending method. The experimental results showed that the size of CuO synthesized by solid phase method was about 100nnm, and the properties of CuO were active. The nano-aluminotherms prepared by solid phase synthesis of nanometer CuO and ordinary nanometer CuO and the same nano-Al powder were compared with each other by ultrasonic blending method. The results showed that the properties of nano-aluminotherms prepared by solid phase method were compared with those of nano-particles prepared by solid phase method. Nanocrystalline aluminotherms prepared by solid phase CuO have high reaction activity, and the combustion of nanocrystalline aluminotherms prepared by nanocrystalline aluminotherms is stable. The combination of inkjet printing and wet pressing can improve the charge density effectively. The influence of three kinds of energetic ink carriers, NC,PVB and GAP, on the charge effect and the ignition and combustion performance after charge are studied. NC is the most suitable carrier for energetic ink. The results of electrophoretic deposition showed that electrophoretic deposition was a novel method for preparing nanocrystalline aluminotherms. At the same time, the advantage of this method is that the shape of the deposited nano-aluminothermic agent is consistent with the electrode substrate, and it is expected to be used in the charge of microscale heterogeneous structure. The micro propeller array charge was realized by ink-jet printing charge, and the combustion properties of Aluminothermic agent 桅, the content of energetic ink carrier and the particle size of raw material to the laser ignition of nano-aluminothermic agent in the micropore were studied. The experimental results show that the optimum 桅 value of the aluminothermic agent is 1.6, the NC content of the carrier is 7.5, and the impulse produced by the combustion of the microporous charge in the optimum formulation is about 145 渭 n 路s.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB383.1;V51
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