溶剂气氛调控制备TATBOA北大核心CSTPCD

To prepare TATB with different particle sizes,nano-TATB was exposed to the solvent dimethyl sulfoxide(DMSO)atmosphere,which was used to induced and controlled the growth of TATB particles.And then,the morphology of the pre-pared TATB crystals was observed by field emission scanning electron microscope.The characteristic peaks of TATB were measured by Raman spectroscopy and Fourier transform infrared spectroscopy.The thermal decomposition performance of TATB was analyzed by differential scanning calorimetry(TG-DSC).A solvent atmosphere induction method was proposed,and the effects of solvent atmosphere,test temperature and reaction time on TATB particle size and morphology were studied.The ex-perimental results show that the solvent atmosphere induction method can induce the growth of nano-TATB with a particle size range of 1-17 μm and regulate the microscopic morphology.Compared with the method of preparing TATB in solvent,the desorption amount of residual solvent in the preparation of TATB by solvent atmosphere induction method is significantly less,only 4.7 mg/g,which is about 1/21 of the former.It is also found that the test temperature and solvent solubility are two key control conditions for regulating the growth of nano-TATB crystals,and the growth of TATB particle size can be controlled by adjusting the test temperature and solvent solubility.Raman spectroscopy results show that the phase structure of TATB pre-pared by solvent atmosphere induction does not change.The thermal decomposition results show that with the increase of the average particle size of TATB from 3 µm to 17 µm,the apparent activation energy Ea of thermal decomposition increases from 208.366kJ/mol to 211.753 kJ/mol.