Effect of Preparation Technological Condition on Particle Size of Sub-micron TATB

The sub-micron TATB was prepared by solvent-nonsolvent technique.The effect of preparation technological condition on the particle size of the sub-micron TATB was studied.The effect of major factors were studied by means of single factor test and orthogonal test,and the energy output of the sub-micron TATB and that of its raw material were tested.It was proved by experiment that major factors affecting particle size of TATB were temperature difference between solution and water,solution concentration,mixing speed,solution adding rate and drying method.Optimized technological conditions obtained by orthogonal test are: temperature difference between solution and water,70℃;solution concentration,23.6 g/100 mL;mixing speed,1 600 r/min;adding rate,0.75 mL/s and vacuum refrigerator drying.The temperature difference between solution and water is the most important factor that affect particle size of the product.Energy output of the sub-micron TATB is higher than that of its raw material.