Characterization of GAP modified single base spherical powder

GAP modified single base spherical powder was prepared by inside dissolving technique, and it was observed and characterised by means of SEM, pseudodensity tester, Laser Granulometer and FT-IR. The results show that GAP modified single base spherical powder presents high roundness rate, no bonding between the particles and excellent fluidity; The better GAP modified single base spherical power can be obtained by slowly increasing vacuum and temperature during the process of taking out solvent. When time of taking out solvent increases from 10 min to 60 min, pseudodensity of modified single base spherical powder increases from 0.5467g·cm^-3 to 0.8315g·cm^-3, and the optimum time of taking out solvent is 40 min~50 min; When stirring speed increases from 700 r/min to 1500r/min, the medium diameter of particales(d₅₀)of GAP modified single base spherical powder decreases from 134.53 μm to 59.80 μm, and the optimum stiring speed is 1000 r/min ~1500 r/min.