Influences of Nano-carbon Materials on Combustion Performance of Boron-based Thermite

doi:10.3969/j.issn.1000-1093.2019.01.006

Abstract

Abstract: Three kinds of nano-carbon materials, including nanographite flake, carbon nanotubes and reduced graphene oxide, are introduced into the system of boron/molybdenum trioxide in order to improve the combustion performance of boron-based thermite. The thermophysical properties of boron-based thermite sample were tested using a heat flux method, and their combustion processes were recorded using a high-speed camera, while the burning rates were calculated and analyzed. Then the firing test was conducted with a metal bridge for testing the critical firing current of thermite. The test results show that the addition of nanocarbon materials could improve the heat-conducting property of B/MoO₃ thermite, increase its burning rate, and reduce its critical firing current. In particular, the reduced graphene oxide is added to increase the thermal conductivity and burning rate of thermite by 258.3% and 1 756 times, respectively, and the critical firing current is reduced by 27.1%. The ignition test results of metal bridge show that the critical firing currents of thermite are decreased with maximum reduction of 27.1%. It is proved that the reduced graphene oxide has the ability to reduce the firing threshold of thermite significantly. Key

Key words: thermite, nano-carbonmaterial, thermalconductivity, burningrate, criticalfiringcurrent

CLC Number:

TJ450.4

LIU Jie， LI Hanjian， REN Hui， JIAO Qingjie. Influences of Nano-carbon Materials on Combustion Performance of Boron-based Thermite[J]. Acta Armamentarii, 2019, 40(1): 42-48.

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第40卷第1期
2019 年1月兵工学报ACTA
ARMAMENTARIIVol.40No.1Jan.2019

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