Study on recrystallization process of nitroguanidine by directly adding cold water to control temperature DOI Creative Commons

Jianjuan Zhang

Open Chemistry, Journal Year: 2024, Volume and Issue: 22(1)

Published: Jan. 1, 2024

Abstract Nitroguanidine (NGu), as a kind of high-energy material, is widely used explosive propellant and energy component explosives smokeless powder. However, NGu crystals prepared by crystallization process are hollow long needles, their bulk density bombing performance greatly limited due to the high at tip, large porosity, poor fluidity. Surprisingly, particle size morphology can effectively be improved recrystallization process. In this article, directly adding cold water control temperature first proposed, aiming improve morphological characteristics reduce NGu. Through single factor experimental research, influences various operating parameters on during were studied in detail. The results showed that smallest average was 19.8 μm when crude concentration, temperature, volume ratio boiling water, stirring speed, polyvinyl alcohol concentration 5 g/100 mL, 0°C, 1:1, 800 rpm, 0.35 respectively. Correspondingly, short rod, which helpful density. This novel has great potential characteristics, providing new idea for preparation military with small

Language: Английский

Carbon nanofibers introduce nitroguanidine propulsion to improve mechanical properties, and the study of thermal decomposition, combustion behavior and molecular dynamics DOI

Ling Chen,

Anning Sun,

Jianwei Zhang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 153932 - 153932

Published: July 11, 2024

Language: Английский

Citations

4

Study on the constant volume combustion performance of single-based propellant by considering heat dissipation correction DOI Open Access

G. Sun,

Ling Chen,

Weidong He

et al.

Journal of Physics Conference Series, Journal Year: 2025, Volume and Issue: 3009(1), P. 012087 - 012087

Published: May 1, 2025

Abstract Aiming at the problem of difference between combustion performance propellant obtained according to current processing method and actual situation, a one-dimensional cylindrical wall axisymmetric unsteady heat transfer model for burning in closed vessel has been established. By utilizing original pressure-time curve from experiments, dissipation corresponding pressure drop were calculated was corrected during process. The curves used investigate impact corrections on single-based propellants under various loading densities test temperatures. Compared with result without correction, maximum rate (0.12 g·cm −3 , 20°C) increased by 7.08% 6.40% respectively after considering correction.

Language: Английский

Citations

0

Construction of nitrate glycerol ether cellulose/RDX energetic composite in gun propellants and its comprehensive performance DOI
Ling Chen, Jianwei Zhang,

Derong Meng

et al.

Cellulose, Journal Year: 2024, Volume and Issue: 31(9), P. 5725 - 5745

Published: May 10, 2024

Language: Английский

Citations

1

Investigating the influence of relative humidity on the hot-air drying mechanism and properties of a double-base propellant DOI

Derong Meng,

Ling Chen,

Weidong He

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(30), P. 11412 - 11425

Published: Jan. 1, 2024

The influence of relative humidity on drying characteristics a double-base propellant is investigated for the first time using hot-air system. Shorter and better quality propellants dried at 50 °C 60% humidity.

Language: Английский

Citations

1

Study on recrystallization process of nitroguanidine by directly adding cold water to control temperature DOI Creative Commons

Jianjuan Zhang

Open Chemistry, Journal Year: 2024, Volume and Issue: 22(1)

Published: Jan. 1, 2024

Abstract Nitroguanidine (NGu), as a kind of high-energy material, is widely used explosive propellant and energy component explosives smokeless powder. However, NGu crystals prepared by crystallization process are hollow long needles, their bulk density bombing performance greatly limited due to the high at tip, large porosity, poor fluidity. Surprisingly, particle size morphology can effectively be improved recrystallization process. In this article, directly adding cold water control temperature first proposed, aiming improve morphological characteristics reduce NGu. Through single factor experimental research, influences various operating parameters on during were studied in detail. The results showed that smallest average was 19.8 μm when crude concentration, temperature, volume ratio boiling water, stirring speed, polyvinyl alcohol concentration 5 g/100 mL, 0°C, 1:1, 800 rpm, 0.35 respectively. Correspondingly, short rod, which helpful density. This novel has great potential characteristics, providing new idea for preparation military with small

Language: Английский

Citations

0