Preparation of Ultrafine TATB and the Technology for Crystal Morphology Control  

作　　者：Yang,Li Ren,Xiaoting Li,Tiecheng Wang,Shiwei Zhang,Tonglai 

机构地区：[1]State Key Laboratory of Explosion Seience and Technology,Beijing Institute of Technology,Beijing 100081,China [2]The 42nd Institute of the Fourth Academy of China Aerospace Science and Technology Corporation,Xiangyang 441003,China

出　　处：《Chinese Journal of Chemistry》2012年第2期293-298,共6页中国化学（英文版）

摘　　要：The ultrafine 1,3,5-triamino-2,4,6-trinitrobenzene （TATB） has been prepared by using solvent and non-solvent method, and the influencing factors in close relationship with the grain size and crystal morphology control such as categories and dosage of surfactants, volume ratio of solvent to non-solvent have also been considered in this paper. It showed that these factors had remarkable effect on the crystal morphology, particle size and agglomeration during the crystallization process. By using 0.095% （mass percentage） ionic surfactant （S） as the additive and using spray-drops feeding device as the dropping equipment, 1.06 g TATB raw materials have been refined into free-running ellipsoid and spherical TATB grains with the grain size from 30 to 50 nm. By using 0.014% （mass percentage） non-ionic surfactant （P） as the additive, spherical TATB grains with the particle diameter of 50 nm and with narrow particle-size distribution have also been obtained. It was shown by the characterizations that the ultrafine particle of TATB had better heat resisting evenness and its 5 seconds ignition point is advanced by 7.5 K.The ultrafine 1,3,5-triamino-2,4,6-trinitrobenzene （TATB） has been prepared by using solvent and non-solvent method, and the influencing factors in close relationship with the grain size and crystal morphology control such as categories and dosage of surfactants, volume ratio of solvent to non-solvent have also been considered in this paper. It showed that these factors had remarkable effect on the crystal morphology, particle size and agglomeration during the crystallization process. By using 0.095% （mass percentage） ionic surfactant （S） as the additive and using spray-drops feeding device as the dropping equipment, 1.06 g TATB raw materials have been refined into free-running ellipsoid and spherical TATB grains with the grain size from 30 to 50 nm. By using 0.014% （mass percentage） non-ionic surfactant （P） as the additive, spherical TATB grains with the particle diameter of 50 nm and with narrow particle-size distribution have also been obtained. It was shown by the characterizations that the ultrafine particle of TATB had better heat resisting evenness and its 5 seconds ignition point is advanced by 7.5 K.

关 键 词：1 3 5-triamino-2 4 6-trinitrobenzene solvent and non-solvent method ULTRAFINE crystal morphology crystal growth SURFACTANTS 

分 类 号：TQ564[化学工程—炸药化工] TB383[一般工业技术—材料科学与工程]