纳米/微米粉体填料对推进剂浆料特性的影响

Influence of nano-/micro- powder filler on properties of propellant slurry

高性能固体推进剂配方中往往需要引入纳米或微米级粉体材料。为了获得各种超细粉体对推进剂浆料特性的影响,分别研究了粉体填料的粒度大小、品种、组合使用以及表面包覆处理等对推进剂浆料的粘度、分散性及机械感度的影响。结果表明,粉体填料的粒度减小,浆料的粘度增大;粉体填料的种类不同,对浆料粘度的影响也不同,其中超细高氯酸铵对浆料粘度影响最大;粉体填料的表面经适当包覆处理后对浆料的粘度、机械感度及分散性都有明显改善。

To get high performance solid propellants, nano-or micro-particles are often introduced in the components of the propellants. Many superfine particles with various particle diameter, varieties, mixture and coated surface have been employed to study the influence on viscosity, dispersion, impact and friction sensitivity of the propellant slurry. The results indicate that, the viscosity of slurry increases while the superfine particle diameter decreases; the viscosity of slurry is obviously influenced by the variety of particle; superfine AP has the most remarkable influence on the viscosity of the slurry; viscosity, impact and friction sensitivity and dispersion of slurry are remarkably improved after particle surface coated properly.