CHINESE JOURNAL OF ENERGETIC MATERIALS
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Al/PTFE/W反应材料的准静态压缩性能与冲击释能特性
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作者单位:

(南京理工大学 智能弹药技术国防重点学科实验室, 江苏 南京 210094)

作者简介:

周杰(1989-),男,博士生,主要从事含能材料高效毁伤技术研究。e-mail: 15950462538@126.com 通信联系人: 何勇(1964-),男,教授,博士生导师,主要从事战斗部总体技术和新概念战斗部技术研究。e-mail: yhe1964@mail.njust.edu.cn

通讯作者:

何勇(1964-),男,教授,博士生导师,主要从事战斗部总体技术和新概念战斗部技术研究。e-mail: yhe1964@mail.njust.edu.cn

基金项目:

国家自然科学基金资助(51375244)


Quasi-static Compression Properties and Impact Energy Release Characteristics of Al/PTFE/W Reactive Materials
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(Ministerial Key Laboratory of ZNDY, Nanjing University of Science & Technology, Nanjing 210094, China)

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    摘要:

    为了提高铝/聚四氟乙烯/钨(Al/PTFE/W)氟聚物基反应材料的冲击反应毁伤效能, 开展了Al/PTFE/W反应材料的准静态压缩实验。分析了W的含量(0%, 30%, 65%)、Al颗粒粒径(13, 45, 75 μm)以及PTFE颗粒尺寸(25, 160 μm)对反应材料的准静态力学性能的影响。用准静态密闭反应容器对反应材料进行了冲击释能测试, 测得反应材料在750~1200 m·s-1的冲击反应压力、释能持续时间。分析了Al颗粒粒径及PTFE材料粒径对冲击反应释能特性的影响。结果表明, 当W的含量为0, 30%和65%时, 反应材料的失效强度分别为55.6、64.8和22.8 MPa, W的含量变化对屈服强度的影响不大。Al颗粒的尺寸从75 μm减小到13 μm时, 反应材料的失效强度从64.7 MPa提高到83.1 MPa, 提高幅度为28.4%。增大PTFE基体材料的粒径也可有效地提高反应材料的失效强度。反应材料的初始反应压力阈值和释放能量持续时间受材料粒径和准静态压缩力学性能的影响。

    Abstract:

    To improve the impact reaction damage effectiveness of Al/PTFE/W fluoropolymer-matrix reactive materials (RMs), quasi-static compression experiments of Al/PTFE/W RMs were carried out. The effects of W content(0%, 30%, 65%), Al particle size(13, 45, 75 μm) and PTFE particle size (25, 160 μm) on the quasi-static mechanical properties of the RMs were analyzed. The impact energy release test of the RMs was performed by quasi-sealed reaction vessel, the impact reaction pressure and duration of energy release of the RMs in the range of 750-1200 m·s-1 were measured. The influence of Al particle size and PTFE particle size on the impact reaction energy release characteristics was analyzed. Results show that when the contents of W are 0%, 30% and 65%, the failure strength of the RMs is 55.6, 64.8 and 22.8 MPa respectively, and the change in W content has little effect on the yield strength. When the size of Al particles decreases from 75 μm to 13 μm, the failure strength of the RMs increases from 64.7 MPa to 83.1 MPa, the range increases by 28.4%. Increasing the particle size of the PTFE matrix material can also effectively improve the failure strength of the reactive material. The initial reaction pressure threshold and the duration of energy release of the RMs are affected by the particle size and quasi-static compressive mechanical properties of the materials.

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引用本文

周杰,何勇,何源,等. Al/PTFE/W反应材料的准静态压缩性能与冲击释能特性[J].含能材料, 2017, 25(11):903-912. DOI:10.11943/j. issn.1006-9941.2017.11.004.
ZHOU Jie, HE Yong, HE Yuan, et al. Quasi-static Compression Properties and Impact Energy Release Characteristics of Al/PTFE/W Reactive Materials[J]. Chinese Journal of Energetic Materials, 2017, 25(11):903-912. DOI:10.11943/j. issn.1006-9941.2017.11.004.

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  • 收稿日期: 2017-04-28
  • 最后修改日期: 2017-06-01
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  • 在线发布日期: 2017-11-23
  • 出版日期: 2017-11-29