微流控技术制备DNTF/LLM-105复合材料及其安全性能分析  

Preparation of DNTF/LLM-105 Composites Using the Microfluidic Technology and It′s Safety Performance Analysis

作　　者：王宇利 张怡婧 李媛媛[2] 刘博 南海[2] 杨建武[1] 马海霞[1,3] WANG Yu-li;ZHANG Yi-jing;LI Yuan-yuan;LIU Bo;NAN Hai;YANG Jian-wu;MA Hai-xia(School of Chemical Engineering,Northwest University/Xi′an Key Laboratory of Special Energetic Materials,Xi′an 710069,China;Xi′an Modern Chemical Research Institute/Science and Technology on Combustion and Explosion Laboratory,Xi′an 710065,China;Rocket Force University of Engineering,Xi′an 710025,China)

机构地区：[1]西北大学化工学院/西安市特种能源材料重点实验室,陕西西安710069 [2]西安近代化学研究所/含能材料全国重点实验室,陕西西安710065 [3]火箭军工程大学,陕西西安710025

出　　处：《火炸药学报》2024年第6期513-520,I0003,共9页Chinese Journal of Explosives & Propellants

基　　金：陕西省创新团队建设项目(No.2022T-33);国防科技重点实验室基金(No.2022-JCJQ-LB-037)。

摘　　要：为了提高3,4-二硝基呋咱基氧化呋咱(DNTF)的使用安全性,利用微流控技术将其与2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105)进行复合,分别制备了质量比分别为50∶50、60∶40和70∶30的DNTF/LLM-105复合材料。采用扫描电子显微镜(SEM)对所制备的DNTF/LLM-105复合材料进行了形貌及结构表征;采用DSC法测试了3种复合材料的热分解性能;测试了3种复合材料的机械感度。结果表明,3种复合材料均为棱柱形,颗粒尺寸较原料明显减小,热分解峰温分别为269.0、262.6和255.4℃,较原料DNTF分别提前了21.2、27.6和34.8℃;机械感度测试结果表明,相比于原料DNTF,微流控技术制备的复合材料的特性落高分别提高了(50±2)、(45±2)和(45±2)cm;相比于原料LLM-105,复合材料的特性落高分别提高了(15±2)、(10±2)和(10±2)cm;复合材料摩擦感度的临界载荷均大于360N。说明利用微流控技术可以制备出颗粒尺寸小、机械感度优于含能材料单体的复合材料。In order to improve the safety performances of 3,4-dinitrofurazanfuroxan(DNTF),2,6-diamino-3,5-dinitropyrazine-1-oxide(LLM-105)was used to combine with it by using the microfluidic technology,DNTF/LLM-105 composites with different mass ratios of 50∶50,60∶40 and 70∶30 were prepared.Scanning electron microscopy(SEM)was used to characterize the morphology and structure of prepared DNTF/LLM-105 composites,and the thermal decomposition were tested by DSC method.The mechanical sensitivities of the composites were tested.The results show that DNTF/LLM-105 composites are all in the prism-shaped structure,and the particle size are significantly smaller than that of raw DNTF,the thermal decomposition peak temperature of the composites are beyond 269.0,262.6,and 255.4℃,which is 21.2,27.6,34.8℃lower than that of DNTF,respectively.The mechanical sensitivity test shows that the characteristic drop height of the prepared DNTF/LLM-105 composites increased by(50±2),(45±2)and(45±2)cm,respectively,compared with raw materials of DNTF,and the characteristic drop height increased by(15±2),(10±2)and(10±2)cm,respectively,compared with raw materials of LLM-105.The critical load of friction sensitivity of the DNTF/LLM-105 composites are all higher than 360 N.The results indicate that the microfluidic technology can be used to prepare the composites with small particle size and better sensitivity than the corresponding energetic material monomers.

关 键 词：物理化学 DNTF/LLM-105复合材料 微流控技术 热分析 机械感度 静电火花感度 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O64[理学—物理化学]