火炸药学报2024，Vol.47Issue(6)：559-565,7.DOI:10.14077/j.issn.1007-7812.202403011
基于温度原位监测的微反应器在HNS微流道制备过程中的应用
Application of Temperature In-situ Monitoring Based Microreactor in HNS Microfluidic Preparation Process
摘要
Abstract
In order to resolve the lack of temperature in-situ monitoring means during the microfluidic preparation of energy-containing materials,a microreactor system with an integrated thin-film temperature sensor is proposed.The microreactor con-sists of a glass substrate containing the thin-film temperature sensor bonded to a silicon substrate containing the microfluidic channel.Three temperature sensors are placed upstream,midstream,and downstream of the microfluidic channel to achieve high spatial resolution temperature measurement during the microreaction process.Based on this microreactor,a continuous mi-crofluidic preparation system for hexanitrostilbene(HNS)is constructed,and the temperature changes during the micro-and nanosizing and sphericalisation of HNS are monitored in real time.The results show that the microreactor has the advantages of high precision,corrosion resistance and observability.HNS micro-and nanosizing is an exothermic reaction with a maximum fluid temperature rise of 6.4 ℃.Due to the gradual precipitation of HNS,the solid content in the fluid increases,the flow rate slows down,and the distribution of the fluid temperature changes.The mixing of two-phase fluids during the HNS spheronisa-tion process is an exothermic process,with a maximum temperature rise of 2.3 ℃.The temperature at the midstream of the microfluidic channel is significantly higher than that at the upstream and downstream,and it is deduced that when the droplets flow to the midstream,the HNS microspheres have already been prepared.关键词
物理化学/微反应器/薄膜温度传感器/实时温度监测/六硝基芪/HNS/微流控Key words
physical chemistry/microreactor/thin-film temperature sensor/real-time temperature monitoring/hexanitrostilbene/HNS/microfluidic分类
军事科技引用本文复制引用
黄健,时育坤,和欣,张松,韩瑞山,周继明,张方,吴梦希,刘军山..基于温度原位监测的微反应器在HNS微流道制备过程中的应用[J].火炸药学报,2024,47(6):559-565,7.基金项目
国家重点研发计划青年科学家项目(No.2022YFB3204600) （No.2022YFB3204600）
大连理工大学医工交叉联合基金(No.DUT23YG215) （No.DUT23YG215）
大连理工大学科技领军人才团队项目(No.DUT22LAB504) （No.DUT22LAB504）
