AP/HTPB悬浮液的流变特性研究

Study on the rheological behavior of AP/HTPB suspension

对含硼富燃固体推进剂用AP/HTPB悬浮液的流变学特性及其影响因素AP粒度形状、填充分数及表面活性剂等方面进行了实验研究。结果表明:AP颗粒间通过粘合剂体系相互作用形成网络结构是悬浮液呈假塑性流动的主要原因;相对表观粘度和填充分数的关系可用含结构粘度项的公式很好地描述。加入表面活性剂SH可改善超细粒AP的表面性能。

The rheological behavior of AP/HTPB suspension of boronbased fuelrich solid propellant and the effects of AP particle size and shape, loading fraction and surfactant are studied. The results show that pseudoplastic behavior of the suspension is mainly due to the interaction among AP particles with the aid of binder system to form a quasinet structure. The relationship between the relative viscosity and the loading fraction can be described by a formula with construction viscosityterm. The surface properties of superfine AP may be improved by adding surfactant SH.