钨颗粒增强铝/聚四氟乙烯材料的冲击反应特性

doi:10.3969/j.issn.1000-1093.2016.05.014

兵工学报 ›› 2016, Vol. 37 ›› Issue (5): 872-878.doi: 10.3969/j.issn.1000-1093.2016.05.014

钨颗粒增强铝/聚四氟乙烯材料的冲击反应特性

任会兰，李尉，刘晓俊，陈志优

（北京理工大学爆炸科学与技术国家重点实验室，北京 100081）

收稿日期:2015-11-03 修回日期:2015-11-03 上线日期:2016-07-06
通讯作者: 任会兰 E-mail:huilanren@bit.edu.cn
作者简介:任会兰(1973—)，女，教授，博士生导师
基金资助:
国家自然科学基金项目(11572049)

Reaction Behaviors of Al/PTFE Materials Enhanced by W Particles

REN Hui-lan, LI Wei, LIU Xiao-jun, CHEN Zhi-you

（State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China）

Received:2015-11-03 Revised:2015-11-03 Online:2016-07-06
Contact: REN Hui-lan E-mail:huilanren@bit.edu.cn

摘要/Abstract

摘要： 针对模压烧结法制备的4种不同配比的铝/钨/聚四氟乙烯(Al/W/PTFE)反应材料，采用分离式霍普金森压杆加载方法和高速摄影技术研究其冲击反应特性。实验结果表明：随着W含量的增加，反应材料的屈服强度和破坏强度提高；反应材料的应力-应变曲线分为弹性阶段、硬化阶段和破坏阶段，动态压缩特性具有明显的应变率效应；Al/W/PTFE反应材料的冲击反应过程可分为变形、破坏和燃烧反应；Al/W/PTFE反应材料中增加W含量，提高了材料的反应应变率阈值和比能量阈值。

关键词: 兵器科学与技术, 铝/钨/聚四氟乙烯反应材料, 分离式霍普金森压杆, 动力学特性, 反应应变率阈值

Abstract: The reaction behaviors of four kinds of Al/W/PTFE materials prepared by compression molding and sintering are studied by split Hopkinson pressure bar (SHPB) and high speed photography. The results show that yield strength and failure strength are improved with the increase in mass fraction of W. The stress-strain curve of the material in quasi-static compression tests can be divided into elastic stage, hardening stage and failure stage. The impact reaction process of Al/W/PTFE material includes deformation, failure and combustion reaction. The calculated results indicate that the strain-rate reaction threshold and unit energy threshold of material increase with the increase in content of W.

Key words: ordnance science and technology, Al/W/PTFE reactive material, split Hopkinson pressure bar, dynamic characteristics, strain-rate reaction threshold

中图分类号:

TJ04

任会兰，李尉，刘晓俊，陈志优. 钨颗粒增强铝/聚四氟乙烯材料的冲击反应特性[J]. 兵工学报, 2016, 37(5): 872-878.

REN Hui-lan, LI Wei, LIU Xiao-jun, CHEN Zhi-you. Reaction Behaviors of Al/PTFE Materials Enhanced by W Particles[J]. Acta Armamentarii, 2016, 37(5): 872-878.

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钨颗粒增强铝/聚四氟乙烯材料的冲击反应特性

Reaction Behaviors of Al/PTFE Materials Enhanced by W Particles

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