含能材料桌面式在线分析检测系统的研究

Research on Desktop Online Analysis and Detection System for Energetic Materials

为了能对含能材料结晶过程中重要参数实现原位在线检测,设计并构建了能够实现多种检测功能的微流控结晶过程在线检测系统(MCPMS)。该系统集成了在线光谱仪、激光器、工业电感耦合元件图像传感器相机与激光粒度仪等多种在线检测装置,可对微反应器的混合效果、炸药结晶关键过程参数(晶体溶解度、介稳区宽度等)以及含能材料晶体形貌等多个重要因素与性能进行分析检测。利用该系统分析了混沌对流微混合器的混合过程,表征了共轴聚焦流微混合器的混合强度。以六硝基茋(HNS)炸药为例,基于涡流微混合器测定了HNS的结晶热力学与动力学参数;基于测定的粒径分布数据研究了HNS基高聚物黏结炸药的晶体生长动力学;基于微筛孔混合器分析了延期药常用氧化剂铬酸钡的晶体厚度与光学性质间的联系。该系统具备良好的功能性与实用性。

In order to achieve in-situ online detection of important parameters in the crystallization process of energetic materials,a microfluidic crystallization process monitoring system(MCPMS)with multiple detection functions was designed and constructed.This system integrates various online detection devices such as online spectrometers,lasers,CCD cameras,and laser particle size analyzers.It can detect and analyze multiple important factors and properties such as the mixing effect of microreactors,key process parameters of explosive crystallization(crystal solubility,metastable zone width,etc.),and crystal morphology of energetic materials.The mixing process of the chaotic micromixer was analyzed using this system,and the mixing strength of the coaxial micromixer was also characterized.Taking HNS as an example,the crystallization thermodynamic and kinetic parameters of HNS were measured based on a vortex micromixer.The crystal growth kinetics of HNS-based polymer bonded explosives were investigated based on measured particle size distribution data.The relationship between the thickness and optical properties of barium chromate crystals,a commonly used oxidant in delay agents,was analyzed based on a microporous mixer.The system has good functionalities and practicalities.