TATB颗粒温压成形PBX的初始细观损伤  

Initial Mesoscopic Damage of TATB based PBX Pressed by Warm Compaction

作　　者：张伟斌[1] 李敬明[1] 杨雪海[1] 肖丽[1] 冯立羊[1] 雍炼[1] 杨占锋[1] 

机构地区：[1]中国工程物理研究院化工材料研究所,四川绵阳621999

出　　处：《含能材料》2015年第2期202-204,共3页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金NSAF重点基金(U1330202);国家自然科学基金青年基金(11204279)

摘　　要：用X射线微层析成像(X-μCT)技术无损研究了TATB造型颗粒经单、双向钢模温压(UWDC和BWDC)法和软模温等静压(IWSC)法成形的高聚物粘结炸药(PBX)三维微细结构特征。结果表明,单向、双向压法压成的PBX内部存在初始细小裂纹和一些残余孔隙。初始损伤尺度范围从百微米至毫米。在相同温度(85℃)和压力(90 MPa)下,UWDC和BWDC法可产生初始细观损伤,但IWSC法能避免初始细观损伤。Three-dimension （3D） mesoscopic structure features of polymer bonded explosives （PBXs） pressed by unidirectional and bidirectional warm die compaction （UWDC and BWDC） and isostatic warm soft compaction （IWSC） methods with the modeling granules of TATB were nondestructively studied by X-ray micro-tomography （ X-μCT） technique. Results show that the initial fine crack and some residual pores are existed in the PBXs pressed by unidirectional and bidirectional compaction methods. The scale range of initial mesoscopic damage is from hundred microns to millimeter. At the same temperature （85 ℃）and pressure （90 MPa） , the initial mesoscopic damage can be produced by UWDC and BWDC methods, but this damage can avoid by IWSC method.

关 键 词：TATB颗粒的温压成形 介观结构 初始细观损伤 X射线微层析成像(X-μCT) 

分 类 号：TQ560.1[化学工程—炸药化工]