Microfluidic strategy for rapid and high-quality control of crystal morphology of explosives,Reaction Chemistry & Engineering

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Microfluidic strategy for rapid and high-quality control of crystal morphology of explosives
Reaction Chemistry & Engineering ( IF 3.4 ) Pub Date : 2020-04-24 , DOI: 10.1039/d0re00119h
Jinyu Shi _{1,

2,

3,

4,

5} , Peng Zhu _{1,

2,

3,

4,

5} , Shuangfei Zhao _{1,

2,

3,

4,

5} , Ruiqi Shen _{1,

2,

3,

4,

5} , Huanming Xia _{2,

3,

4,

6} , Hanyu Jiang _{4,

7,

8,

9} , Siyu Xu _{4,

7,

8,

9}

Affiliation

The crystal morphology of explosives has a great influence on their detonation performance and safety. In order to realize the crystal morphology control of explosives, a new strategy based on microfluidics was proposed. The new strategy consisting of morphology predictions and microfluidic verification experiments has the characteristics of excellent accuracy, less sample consumption, and fast verification. The shapes and sizes of explosives were predicted by simulations and theoretical analysis with different solvents, respectively. Considering an ideal crystallization environment for verification experiments, the parameters of the microfluidic platform were optimized. Under the optimal parameters, the verification experiments were conducted using a microfluidic platform. Here, we used hexanitrohexaazaisowurtzitane (HNIW, also known as CL-20) as a sample to study the applicability of the new strategy for crystal morphology control of explosives. The optimized flow rate ratio and number of chambers were adapted to the verification experiments. It was found that the thicknesses of HNIW have positive correlation with the polarities of the solvents and the sizes have negative correlation with the concentrations, which is in line with predictions. This study demonstrates the feasibility of an efficient, accurate strategy to realize the crystal morphology control of explosives based on a microfluidic platform.

中文翻译：

快速高效控制炸药晶体形态的微流控策略

炸药的晶体形态对其爆炸性能和安全性有很大影响。为了实现炸药的晶体形态控制，提出了一种基于微流控的新策略。由形态预测和微流验证实验组成的新策略具有精度高，样品消耗少，验证速度快的特点。通过使用不同溶剂的模拟和理论分析分别预测了炸药的形状和大小。考虑到用于验证实验的理想结晶环境，对微流体平台的参数进行了优化。在最佳参数下，使用微流体平台进行了验证实验。在这里，我们使用了六硝基六氮杂异纤锌矿型结构烷烃（HNIW，也称为CL-20）作为样本，以研究炸药晶体形态控制新策略的适用性。优化的流量比和腔室数量适用于验证实验。结果发现，HNIW的厚度与溶剂的极性呈正相关，尺寸与浓度呈负相关，这与预测相符。这项研究证明了基于微流控平台的高效，准确策略实现炸药晶体形态控制的可行性。结果发现，HNIW的厚度与溶剂的极性呈正相关，尺寸与浓度呈负相关，这与预测相符。这项研究证明了基于微流控平台实现炸药晶体形态控制的有效，准确策略的可行性。结果发现，HNIW的厚度与溶剂的极性呈正相关，尺寸与浓度呈负相关，这与预测相符。这项研究证明了基于微流控平台的高效，准确策略实现炸药晶体形态控制的可行性。

更新日期：2020-04-24

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