Open AccessExperimental research on thermal ignition of typical shell aluminized mixed explosive under fast thermal action
Author(s) -
Sheng Wei Zhao,
Gang Zhou,
C. L. Wang
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1507/3/032069
Subject(s) - explosive material , ignition system , materials science , thermocouple , casting , thermal , composite material , autoignition temperature , nuclear engineering , thermodynamics , chemistry , physics , engineering , organic chemistry
In order to obtain the thermal ignition characteristics of the typical aluminized mixed explosive with shell under fast thermal action, this research takes the casting TNT RDX Al (THL) explosive and casting PBXN-109 explosive as the research target, and establishes the thermal ignition experiment platform for fast heating shell explosives and thermal ignition model of explosive with shell, and carries out the thermal ignition experiment of two explosives under different sizes. It uses the fast heating device to generate fast thermal action, and heat the explosives in steel restraints, which uses the thermocouple to tests the temperature history to obtain the explosion temperature and delay time of the explosive thermal ignition. The results show that: ①The explosion temperature and delay time of the two kinds of explosives increase with the ratio of heating range to explosive size decrease, and both of them are larger than the 5s brustpoint. ②In a certain error range, the model calculation values and experimental results are basically consistent, which can be used for semi quantitative predicting explosion temperature and delay time. ③THL explosive is casting type with high density and high hardness, which damaged greatly after thermal ignition. PBXN-109 explosive is a casting plastic bonded explosive with low density and soft quality, and its damage is not so serious as the THL explosive after thermal ignition.