摘要
为了解决喷墨打印装药效率低、多晶型主体炸药易转晶等问题,以海藻酸钠(SA)和水溶性丙烯酸树脂(AE)为双组分黏结体系,亚微米ε-CL-20为主体炸药,设计并制备了一种炸药颗粒质量分数为40%的CL-20基微纳颗粒悬浮型含能复合物油墨,采用喷墨打印工艺进行了成型;利用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、差示扫描量热仪(DSC)、BAM摩擦感度仪和BAM落锤仪分别对打印样品的表面形貌、主体炸药晶型、热稳定性和机械感度进行了测试,并对打印成型样品的微爆轰性能进行了试验和分析。结果表明,所设计的含能油墨具有良好的可打印性,成型样品表面光滑,内部结构呈均匀分布的多微孔蜂巢状,微观颗粒粒径约为200~400nm,CL-20炸药在喷墨打印过程中未发生转晶,仍为ε型;与亚微米CL-20相比,成型样品的临界撞击能与临界摩擦力分别上升了0.5J和48N,热分解峰温稍有上升,展现了较为优异的热、机械安全性;成型样品的爆轰临界尺寸和爆轰速度分别为1mm×0.033mm与7348.3m/s,显示了较好的微尺度传爆能力。
In order to solve the problems of low charging efficiency and easy crystal transition of polycrystalline main explosives in inkjet printing process,sodium alginate(SA)and water-soluble acrylic ester(AE)were used as a two-component bonding system,and submicronε-CL-20 was used as the main explosive,a CL-20-based micro-nano particle suspension energetic composite ink with 40%(mass fraction)explosive particle was designed and prepared,which was molded by inkjet printing process.The surface morphology,main explosive crystal form,thermal stability and mechanical sensitivity were tested by scanning electron microscope(SEM),X-ray diffractometer(XRD),differential scanning calorimeter(DSC),BAM friction sensitivity meter and BAM drop weight meter.The micro-detonation performance of the printed samples was tested and analyzed.The results show that the designed energetic ink has good printability.The surface of the molded sample is smooth and the internal structure is uniformly distributed in the shape of multi-microporous honeycomb.The microscopic particle size is about 200—400nm.The CL-20 explosive has no crystal transition in inkjet printing process,and the crystal form is stillε-type.Compared with the submicron CL-20,the critical impact energy and critical friction force of the printed sample are increased by 0.5J and 48N respectively.The thermal decomposition peak temperature increase slightly,exhibiting excellent thermal and mechanical safety.The detonation critical size and detonation velocity of the printed sample are 1mm×0.033mm and 7348.3m/s respectively,which shows a good detonation ability in micro-scale.
作者
冯致远
郑步昊
吴族慧
徐传豪
安崇伟
景小飞
何建忱
FENG Zhi-yuan;ZHENG Bu-hao;WU Zu-hui;XU Chuan-hao;AN Chong-wei;JING Xiao-fei;HE Jian-chen(School of Environment and Safety Engineering,North University of China,Taiyuan 030051,China;Office of the First Military Representative in Chengdu Region,Chengdu 610000,China)
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2023年第11期984-989,I0004,共7页
Chinese Journal of Explosives & Propellants
基金
国家自然科学基金(No.22275170)。
