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The water immersion technique is conducted to increase the surface area of the triple base propellant. In order to investigate the influence of water erosion on triple base propellants, the SEM and material tester were used to observe the surface texture and test the mechanical property at different temperature .The result shows that the effect of water erosion on structure is superficial, the erosion depth is about 50~150 μm after 60 minutes,which does not impact the interior structure. The tests of mechanical property indicate that the mechanical property declines with the time of water erosion increasing, the decrease at room temperature is less than the decrease at high and low temperature.

In order to obtain surface micro-holes structure of triple-base propellants, using hot water erosion triple base propellant. Control the immerse time interval, forming different surface micro-structure samples, the combustion performance was studied through closed-bomb test and the anti-tensile intensity was measured by material testing machine. Experimental results indicate that, surface micro-structure can form by immersed in hot water, the surface micro-structure decreased combustion time of propellant, on the other hand, decreased the anti-tensile intensity of propellants.