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超级铝热剂的制备及其与双基系推进剂组分的相容性

     

摘要

Super thermites Al/PbO and AI/B12O3 were prepared by an ultrasonic dispersion method using nano-Al, nano-PbO and nano-Bi2O3 as raw materials. The physical phase, composition, morphology and structure of raw materials and products were characterized by XRD, SEM-EDS and FT-IR. The vacuum stability test (VST) and DSC were employed to evaluate the compatibilities of two kinds of super thermites with double-base propellants components. The results indicated that Al/PbO and Al/Bi2O3 had good compatibilities with nitrocellulose (NO, nitrocellulose/ nitroglycerine (NC+ NG) and N-nitro dihydroxy ethylamine dinitrate (DINA). The systems of super thermites with cyclo-trimethylene trinitramine (RDX) and 1, 3-dimethyl-l, 3-diphenylurea (C2) were judged to be compatible by VST, while to be incompatible by DSC. The reasons causing different results from different methods were discussed.%以纳米铝粉、纳米氧化铅和纳米三氧化二铋为原料,利用超声分散复合法制备了超级铝热剂Al/PbO和Al/Bi2O3.采用X射线粉末衍射(XRD)、扫描电镜及能谱分析(SEM-EDS)和红外光谱(FT-IR)对原料和产物的物相、组成、形貌和结构进行分析表征;利用真空安定性实验仪(VST)和差示扫描量热仪(DSC)研究了两种超级铝热剂与硝化棉(NC)、吸收药(NC+NG)、黑索今(RDX)、吉纳(DINA)和二号中定剂(C2)五种双基系推进剂主要组分的混合体系的相容性.结果表明,VST法和DSC法实验一致判断纳米超级铝热剂与双基系推进剂主要组分NC,NC+NG和DINA有较好的相容性;而Al/PbO和Al/Bi2O3分别与RDX和Q组成的混合物体系则有不同的分析结果,VST法判断为相容,而DSC法却认为体系敏感,分析了不同方法得出不同结论的原因.

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