微流控技术制备叠氮化铅起爆药及其改性

Rui shan Han; Fang Zhang; Fei peng Lu; Yan lan Wang; Lei Zhang; Jian hua Chen; Rui Zhang; Hai fu Wang; En yi Chu

doi:10.11943/CJEM2022011

微流控技术制备叠氮化铅起爆药及其改性

Translated title of the contribution: Preparation and Modification Technology of Lead Azide Primary Explosive Based on Microfluidics

Rui shan Han, Fang Zhang, Fei peng Lu, Yan lan Wang, Lei Zhang, Jian hua Chen, Rui Zhang, Hai fu Wang^*, En yi Chu^*

^*Corresponding author for this work

School of Mechatronical Engineering

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

The conventional lead azide (Pb(N₃)₂, LA) preparation process has problems such as the risk of self‑explosion. Aiming at the above problems, the spin‑T microfluidic chip with the characteristics of short diffusion distance, large specific surface area, and continuous reaction was used as a microreactor. And then, the LA primary explosive synthesized by microfluidics was spherically modified by using the flow‑focusing droplet chip. The effects of the flow rate, crystal form control agent, and other factors on the product were investigated by SEM, XRD, and DSC. The sensitivity and explosion performance of microfluidic LA, microsphere LA, and powder LA were compared. The results show that by controlling the microfluidic reaction parameters, the particle size of the LA can be effectively controlled, and they were all α‑type. After the spheroidization, the impact sensitivity H₅₀ (25.5 cm to 12.1 cm) was significantly improved, but the electrostatic spark E₅₀ (1.98 kV to 2.97 kV) and flame sensitivity L₅₀ (26.3 cm to 16.1 cm) were reduced. At the same time, the detonation pressure was increased (by 63.6%). It shows that the microfluidic technology was an effective method that can safely prepare and modify the LA primary explosive, which provided an idea for the controllable preparation and regulation of sensitive primers.

Translated title of the contribution	Preparation and Modification Technology of Lead Azide Primary Explosive Based on Microfluidics
Original language	Chinese (Traditional)
Pages (from-to)	451-458
Number of pages	8
Journal	Hanneng Cailiao/Chinese Journal of Energetic Materials
Volume	30
Issue number	5
DOIs	https://doi.org/10.11943/CJEM2022011
Publication status	Published - 25 May 2022

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10.11943/CJEM2022011

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title = "微流控技术制备叠氮化铅起爆药及其改性",

abstract = "The conventional lead azide (Pb(N3)2, LA) preparation process has problems such as the risk of self‑explosion. Aiming at the above problems, the spin‑T microfluidic chip with the characteristics of short diffusion distance, large specific surface area, and continuous reaction was used as a microreactor. And then, the LA primary explosive synthesized by microfluidics was spherically modified by using the flow‑focusing droplet chip. The effects of the flow rate, crystal form control agent, and other factors on the product were investigated by SEM, XRD, and DSC. The sensitivity and explosion performance of microfluidic LA, microsphere LA, and powder LA were compared. The results show that by controlling the microfluidic reaction parameters, the particle size of the LA can be effectively controlled, and they were all α‑type. After the spheroidization, the impact sensitivity H50 (25.5 cm to 12.1 cm) was significantly improved, but the electrostatic spark E50 (1.98 kV to 2.97 kV) and flame sensitivity L50 (26.3 cm to 16.1 cm) were reduced. At the same time, the detonation pressure was increased (by 63.6%). It shows that the microfluidic technology was an effective method that can safely prepare and modify the LA primary explosive, which provided an idea for the controllable preparation and regulation of sensitive primers.",

keywords = "Lead azide(LA), Microfluidic, Primer, Sensitivity, Spheroidization",

author = "Han, {Rui shan} and Fang Zhang and Lu, {Fei peng} and Wang, {Yan lan} and Lei Zhang and Chen, {Jian hua} and Rui Zhang and Wang, {Hai fu} and Chu, {En yi}",

year = "2022",

month = may,

day = "25",

doi = "10.11943/CJEM2022011",

language = "繁体中文",

volume = "30",

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journal = "Hanneng Cailiao/Chinese Journal of Energetic Materials",

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T1 - 微流控技术制备叠氮化铅起爆药及其改性

AU - Han, Rui shan

AU - Zhang, Fang

AU - Lu, Fei peng

AU - Wang, Yan lan

AU - Zhang, Lei

AU - Chen, Jian hua

AU - Zhang, Rui

AU - Wang, Hai fu

AU - Chu, En yi

PY - 2022/5/25

Y1 - 2022/5/25

N2 - The conventional lead azide (Pb(N3)2, LA) preparation process has problems such as the risk of self‑explosion. Aiming at the above problems, the spin‑T microfluidic chip with the characteristics of short diffusion distance, large specific surface area, and continuous reaction was used as a microreactor. And then, the LA primary explosive synthesized by microfluidics was spherically modified by using the flow‑focusing droplet chip. The effects of the flow rate, crystal form control agent, and other factors on the product were investigated by SEM, XRD, and DSC. The sensitivity and explosion performance of microfluidic LA, microsphere LA, and powder LA were compared. The results show that by controlling the microfluidic reaction parameters, the particle size of the LA can be effectively controlled, and they were all α‑type. After the spheroidization, the impact sensitivity H50 (25.5 cm to 12.1 cm) was significantly improved, but the electrostatic spark E50 (1.98 kV to 2.97 kV) and flame sensitivity L50 (26.3 cm to 16.1 cm) were reduced. At the same time, the detonation pressure was increased (by 63.6%). It shows that the microfluidic technology was an effective method that can safely prepare and modify the LA primary explosive, which provided an idea for the controllable preparation and regulation of sensitive primers.

AB - The conventional lead azide (Pb(N3)2, LA) preparation process has problems such as the risk of self‑explosion. Aiming at the above problems, the spin‑T microfluidic chip with the characteristics of short diffusion distance, large specific surface area, and continuous reaction was used as a microreactor. And then, the LA primary explosive synthesized by microfluidics was spherically modified by using the flow‑focusing droplet chip. The effects of the flow rate, crystal form control agent, and other factors on the product were investigated by SEM, XRD, and DSC. The sensitivity and explosion performance of microfluidic LA, microsphere LA, and powder LA were compared. The results show that by controlling the microfluidic reaction parameters, the particle size of the LA can be effectively controlled, and they were all α‑type. After the spheroidization, the impact sensitivity H50 (25.5 cm to 12.1 cm) was significantly improved, but the electrostatic spark E50 (1.98 kV to 2.97 kV) and flame sensitivity L50 (26.3 cm to 16.1 cm) were reduced. At the same time, the detonation pressure was increased (by 63.6%). It shows that the microfluidic technology was an effective method that can safely prepare and modify the LA primary explosive, which provided an idea for the controllable preparation and regulation of sensitive primers.

KW - Lead azide(LA)

KW - Microfluidic

KW - Primer

KW - Sensitivity

KW - Spheroidization

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SN - 1006-9941

VL - 30

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JO - Hanneng Cailiao/Chinese Journal of Energetic Materials

JF - Hanneng Cailiao/Chinese Journal of Energetic Materials

IS - 5

ER -

微流控技术制备叠氮化铅起爆药及其改性

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