火炸药学报2017，Vol.40Issue(6)：29-35,7.DOI:10.14077/j.issn.1007-7812.2017.06.005
纳米PbZrO3对AP、RDX、HMX热分解和NG/NC双基推进剂燃烧性能的影响
Effects of Nano PbZrO3 on the Decompositions of AP ,RDX ,HMX and the Combustion of (NG/NC) Propellant
摘要
Abstract
Nanoscale lead zirconate (PbZrO3 ) was prepared by using co-precipitation method ,and characterized by X-ray diffraction (XRD) ,scanning electron microscope (SEM ) and transmission electron microscope (TEM ) .The catalytic performances of PbZrO3 on the decomposition of ammonium perchlorate (AP) ,cyclotrimethylene trinitra-mine (RDX) and cyclotetramethylene tetranitramine (HMX ) were examined by differential scanning calorimetry (DSC) .The thermal behaviors ,nonisothermal decomposition kinetics of nitroglycerin /nitrocotton (NG/NC) doub-le-base propellant with nano PbZrO3 (PbZrO3-DB) were also studied .The results show that PbZrO3 presents a typi-cal perovskite structure .Nano PbZrO3 can remarkably reduce the thermal decomposition temperature and apparent activation energy of decomposition process (reduced by 21 ,7 .4 and 15 kJ/mol respectively ) .The thermal decompo-sition of PbZrO3-DB propellant is heterogeneous .Thermal decomposition mechanism of PbZrO3-DB propellant is a contracting cylinder with phase boundary reaction ,and the kinetic equation is :dα/dt = 10 (16 .7)/β 2(1 - α) 1/2 exp( - 1 .696 × 105 /RT) .Used as a combustion catalyst of NG /NC solid propellant ,nano PbZrO3 can obviously increase the burn-ing rate and decrease the pressure exponent (0 .37 - 0 .39) in the pressure range of 2 - 14 MPa .The catalytic com-bustion action of nano PbZrO3 is much better than that of PbO .关键词
纳米PbZrO3/NG/NC双基推进剂/金属复合氧化物/固体推进剂/热分解/催化燃烧Key words
nano PbZrO3/NG/NC double-base propellant/metal composite oxide/solid propellant/thermal decom-position/catalytic combustion分类
军事科技引用本文复制引用
王为民,魏涛涛,高红旭,肖立柏,徐抗震,赵凤起..纳米PbZrO3对AP、RDX、HMX热分解和NG/NC双基推进剂燃烧性能的影响[J].火炸药学报,2017,40(6):29-35,7.基金项目
The national defence key laboratory of propellant and explosive combustion (No.914 * 162) and postdoctoral science foundation of China (No.2014M552480) . （No.914 * 162）
