Structure and Properties of Four-hole Polydopamine-coated Gun Propellant

Libao CUI; Zhao YANG; Yajun DING; Jie ZHOU; Zhongliang XIAO

doi:10.12382/bgxb.2022.0283

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Structure and Properties of Four-hole Polydopamine-coated Gun Propellant

更新时间：2025-08-18

- Structure and Properties of Four-hole Polydopamine-coated Gun Propellant
- Acta Armamentarii Vol. 44, Issue 7, Pages: 2014-2022(2023)
- 作者机构：
  
  1. 南京理工大学化学与化工学院, 江苏南京 210094
  2. 南京理工大学特种能源材料教育部重点实验室, 江苏南京 210094
- 作者简介：
- 基金信息：
- DOI：10.12382/bgxb.2022.0283
  CLC：
- Received：17 April 2022，
  
  Published Online：07 August 2023，
  
  Published：30 July 2023
- 稿件说明：
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Libao CUI, Zhao YANG, Yajun DING, et al. Structure and Properties of Four-hole Polydopamine-coated Gun Propellant[J]. Acta Armamentarii, 2023, 44(7): 2014-2022.
DOI：

Libao CUI, Zhao YANG, Yajun DING, et al. Structure and Properties of Four-hole Polydopamine-coated Gun Propellant[J]. Acta Armamentarii, 2023, 44(7): 2014-2022. DOI： 10.12382/bgxb.2022.0283.

摘要

针对现有球扁发射药的减面性燃烧、钝感剂迁移等突出问题

基于多巴胺(DA)在四孔发射药表面的自聚合反应获得聚多巴胺(PDA)包覆四孔发射药

利用扫描电镜和拉曼光谱研究其微观结构组成

采用热重分析仪、密闭爆发器等分析其热力学、燃烧等性能。研究结果表明:PDA能够较好地包覆于四孔发射药表面

且在四孔发射药表面团聚形成的颗粒尺寸可达5μm;PDA对四孔发射药的表面包覆作用显著提升了四孔发射药燃烧的渐增性

相比于原药

PDA包覆四孔发射药的初始活度

和最大活度

分别降低了42.05%和60.25%

渐增性系数提高了53.90%;经加速老化后PDA包覆四孔发射药的燃烧性能变化较小

55℃老化30d后其

和

仅分别升高了1.69%和0.59%

表明PDA包覆四孔发射药具有良好的长贮稳定性。

Abstract

To address issues such as regressive burning and deterrent migration in oblate spherical propellants

we developed a novel four-hole gun propellant coated with polydopamine (PDA) through self-polymerization of dopamine (DA) on the propellant’s surface. The microstructure

thermodynamics

and combustion performance of the propellant were analyzed using scanning electron microscope

Raman spectrometer

thermogravimetric analyzer

and closed bomb vessel. The results show that PDA can be well coated on the propellant’s surface

and the particle size of PDA can reach 5μm. The surface coating effect of PDA on the propellant can significantly improve the incremental combustion of propellant

resulting in a 42.05% decrease in initial burning activity (

)

a 60.25% decrease in maximum burning activity (

)

and a 53.90% increase in burning progressivity index. After accelerated aging

the combustion performance of the PDA-coated four-hole gun propellant changed slightly. After accelerated aging at 55℃ for 30 days

the

and

only increased by 1.69% and 0.59%

respectively

indicating high long-storage stability for the PDA-coated four-hole gun prop

ellant.

关键词

Keywords

references

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