Mussel-inspired PTW@PDA composites for developing high-energy gun propellants with reduced erosion and enhanced mechanical strength

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外文摘要：The severe erosion and inadequate mechanical strength are prominent challenges for high-energy gun propellants.To address it,novel PTW@PDA composites was prepared by polydopamine(PDA)-modifying onto potassium titanate whisker(PTW,K2Ti6O13),and after was incorporated into gun propellant as erosion-reducing and mechanical-reinforcing fillers.The interfacial characterizations results indicated that as-prepared PTW@PDA composites exhibits an enhanced surface compatible with propellant matrix,thereby facilitating their dispersion into propellants more effectively than raw PTW materials.Compared to original propellants,PTW@PDA-modified propellants exhibited significant less erosion,with a Ti-K-based protective coating being detected on the eroded steel.And 0.5 wt％and 1.0 wt％addition of PTW@PDA significantly improved impact,compressive and tensile strength of propellants.Despite the inevitably reduction in relative force,PTW@PDA slightly increase propellant burning rate while exerting little adverse impact on propellant dynamic activity.This strategy can provide a promising alternative to develop high-energy gun propellant with less erosion and more mechanical strength.

外文关键词：

High energy gun propellantPotassium titanate whiskersPolydopamine modificationErosion inhibitorsMechanical reinforcing fillers

作者：

Xijin Wang、Zhitao Liu、Pengfei Sun、Feiyun Chen、Bin Xu、Xin Liao

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作者单位：

School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China

China North Industries Group Corporation Limited,Beijing 100045,China

基金：

the instrument and equipment fund of the Key Laboratory of Special Energy,Ministry of Education,Nanjing University of Science an

项目编号：

出版年：

2024

DOI：

10.1016/j.dt.2023.11.018

防务技术

中国兵工学会

防务技术

CSTPCD

影响因子：0.358

ISSN：2214-9147

年,卷(期)：2024.32(2)

参考文献量59