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含能材料  2011 

硝基甲烷爆轰区热作用下铝、铝热剂和含铝炸药颗粒的温度响应

DOI: 10.3969/j.issn.1006-9941.2011.01.002

Keywords: 爆炸力学,热作用,温度响应,铝颗粒,铝热剂,含铝炸药,硝基甲烷,热渗透深度

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Abstract:

推导了描述炸药爆炸作用所致材料温度响应的表达式。提出了估算材料渗透深度(x)与温度(T)关系的数值方法。借助铝颗粒(体系Ⅰ)、铝热剂(3Fe3O4-8Al)颗粒(体系Ⅱ)和含铝炸药(59/20/20/0.5/0.5-RDX/AP/Al/binder/additive)颗粒(体系Ⅲ)的初温、比热容、密度、热导率和硝基甲烷的爆轰区温度和爆轰持续时间数据,用导出的表达式,通过数值计算,构筑了体系Ⅰ、Ⅱ和Ⅲ的T-x关系图。结果表明,在硝基甲烷爆轰区热作用下使体系达点火温度2070K(体系Ⅰ)、1209.15K(体系Ⅱ)和485.68K(体系Ⅲ)的x值分别为1.053,1.880,0.1905μm,至体系达初温300K的x值分别为10.5,9.6,0.6μm。

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