CuO结构特性及其对固体推进剂的催化特性

Structure characteristic of CuO and catalytic property on propellant

为了解不同粒度和不同形态下CuO的催化能力,采用热重/差热联用(TG/DTA),水下声发射实验方法,研究了普通球形CuO、球形纳米级CuO、棒状纳米级CuO对A3、PBT、HMX、AP等含能材料的热分解影响,并测试了不同种类CuO对固体复合推进剂燃烧速率的影响。结果表明,CuO类催化剂均能催化A3、PBT、HMX、AP等含能材料的热分解,但催化效果和CuO的形态关系密切,和粒度关系不大;棒状纳米CuO可有效地提高推进剂的燃速;而球形纳米CuO只在低压条件下可提高推进剂的燃速,高压下反而抑制了推进剂的燃速。

Using TG/DTA and burning rate test,the catalysis characteristics of CuO within different particle size and morphology have been investigated.By this study,the effects of general spherical CuO,pherical nanoscale CuO,clavate nanoscale CuO on the thermal decomposition of energetic materials are included.Different forms of CuO result in different burning rate of composite solid propellant.Results indicate that the CuO would catalyze the thermal decomposition of energetic material,and the catalytic properties are related to the forms of CuO,which has little relationship with sizes of CuO.Clavate nanoscale CuO can effectively improve the burning rate of composite solid propellant.Pherical nanoscale CuO can improve the burning rate of composite solid propellant under low pressure,and restrain the burning rate under high pressure.