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
王宇利 1张怡婧 1李媛媛 2刘博 3南海 2杨建武 1马海霞4
作者信息
- 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
- 4. 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;火箭军工程大学,陕西西安 710025
- 折叠
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.
Abstract
In order to improve the safety performances of 3,4-dinitrofurazanfuroxan(DNTF),2,6-diamino-3,5-dinitropy-razine-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 char-acterize 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 decomposi-tion 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 360N.The results indicate that the microfluidic technology can be used to prepare the composites with small particle size and better sensi-tivity 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Key words
physical chemistry/DNTF/LLM-105 composite materials/microfluidic technology/thermal analysis/mechanical sensitivity/electrostatic spark sensitivity引用本文复制引用
基金项目
陕西省创新团队建设项目(2022T-33)
国防科技重点实验室基金(2022-JCJQ-LB-037)
出版年
2024
国家科技期刊平台
NSTL
万方数据