Bu-NENA基改性 基推进剂的力学性能 安全性

Shi Xiong Sun, Ben Bo Zhao, Chao Sang, Yuan Cheng*, Yun Jun Luo

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

2 引用 (Scopus)

摘要

A novel double-base propellant plasticized by Bu-NENA which substitutes NG with high solid content was prepared by solvent-free process to improve mechanical and security performance. The tensile mechanical performance, dynamic mechanical properties, and mechanical sensitivities were tested by universal tensile tester, dynamic thermomechanical analyzer and sensitive testers. The results showed that, compared with NG, Bu-NENA can obviously decrease mechanical sensitivity and enhance mechanical properties of propellant. When the mass fraction of Bu-NENA is 19.1%, the mechanical properties of the propellant(code B3)are better. By contract with the blank group(NG based double base propellant, B0), the elongation under -40℃ was promoted by 114% from 3.5% to 7.57%. Friction sensitivity was decreased by 95.7% from 46% to 2%, meanwhile, H50 was increased by 95.3% from 17.2cm to 33.6cm. The study of dynamic mechanical properties shows that Bu-NENA has better plasticizing effect on nitrocellulose(NC). The β transition temperature of B3 propellant decreases from -33.8℃ of B0 to -37.8℃, and the toughness increases. The Bu-NENA based propellant exhibited an excellent low temperature mechanical property and low sensitivity which has certain application prospect in short range tactical weapon.

投稿的翻译标题Mechanical Performance and Security Performance of Bu-NENA Based Modified Double-base Propellant
源语言繁体中文
页(从-至)561-566
页数6
期刊Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
45
4
DOI
出版状态已出版 - 2022

关键词

  • Bu-NENA
  • energetic plasticizer
  • high solid content
  • modified double base propellant
  • physical chemistry

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