超细AP/HTPB悬浮液的流变特性

Rheological Behavior of AP(SH)/HTPB Suspensions

在改进NDJ-4型旋转粘度仪的基础上,对切应力τ、切变速率γ·及剪切速度指数n等流变学参数进行了估算。从填充分数、工艺助剂等方面对含硼富燃固体推进剂用超细AP/HTPB悬浮液流变特性进行了实验研究。结果表明,AP颗粒间通过粘合剂体系形成相互作用是悬浮液呈假塑性流动的主要原因,表面活性助剂(SH)可明显改善超细粒AP的表面性能。

The rheological behavior of superfine AP/HTPB suspensions,which is based on Boronbased fuelrich solid propellant, for AP with loading fractions,surface properties and its surfactant has been studied, using the improved NDJ4 Rotary viscometer by us. The results indicate that the suspensions appear as the pseudo plastic behavior mainly due to the interaction among AP particles from binder system.The surface property of superfine AP may be improved by SH.