纳米Ni/CNTs对AP/HTPB推进剂热分解及燃烧性能的影响  

Effect of nano Ni/CNTs on thermal decomposition and combustion properties of AP/HTPB propellants

作　　者：刘永[1] 刘建勋[1] 姜炜[1] 李凤生[1] 

机构地区：[1]南京理工大学国家特种超细粉体工程技术研究中心,南京210094

出　　处：《固体火箭技术》2008年第4期363-367,共5页Journal of Solid Rocket Technology

基　　金：国家自然科学基金项目(No.50602024);总装预研项目(62301070202)

摘　　要：采用化学液相沉淀法制备了纳米Ni/CNTs复合催化剂,用SEM、XRD、XPS对纳米Ni/CNTs的形貌、微观结构、组成进行了表征,采用DSC研究了其对AP和AP/HTPB推进剂热分解的催化性能,并考察了纳米Ni/CNTs对AP/HTPB推进剂燃速和压强指数的影响。结果表明,纳米Ni能够均匀包覆在CNTs表面,纳米Ni/CNTs可显著降低AP及AP/HTPB推进剂的热分解峰峰温,使AP及AP/HTPB的总表观分解热明显增大,并能有效提高AP/HTPB推进剂的燃速和降低其压强指数。相同量的纳米Ni/CNTs、纳米Ni和纯CNTs进行对比,纳米Ni/CNTs具有更好的催化性能,表现出较好的正协同催化效应。Nano Ni/CNTs composite catalyst was prepared by chemical liquid deposition. The morphology, microstructure and composition of nano Ni/CNTs were characterized by means of SEM, XRD and XPS. The catalysis of nano Ni/CNTs on thermal decomposition of AP and AP/HTPB propellant was investigated by means of DSC. The effects of nano Ni/CNTs on the burning rate and pressure exponent of AP/HTPB propellant were analyzed. The results show that nano Ni can be coated uniformly on the surface of CNTs,nano Ni/CNTs can make thermal decomposition peak temperature of AP and AP/HTPB propellant fall and total apparent decomposition heat increase obviously. In addition,it can improve burning rate and reduce pressure exponent of AP/HTPB propellant effectively. Under the same content, nano Ni/CNTs possesses the better catalytic property and positive synergistic effect compared with pure CNTs and nano Ni.

关 键 词：纳米Ni/CNTs复合催化剂 高氯酸铵 AP/HTPB推进剂 热分解 燃烧催化剂 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]