Nabiullah,, M. and Gupta, R.N. and Singh, B. (1989) Studies on the thermal behaviour of detonating fuse and detonators. journal of thermal analysis and calorimetry, 35 (4). pp. 1165-1172. ISSN 1388-6150

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Investigations of the thermal stability of detonating fuse containing 10 g pentaerythrol tetranitrate (PETN) revealed that the cord burnt under unconfinement at 403 K. Under confinement in a steel pipe or copper tube there was a partial detonation at 403 K. In order to characterize the thermal stability of PETN and pyrotechnic composition used in fuse head of electric detonators differential thermal analysis (DTA) was used. The electric detonators of aluminium cell and copper cell were heated from ambient temperature to 373 K at an average rate of 0.4 deg/min. The rate of heating was increased gradually to 1.5 deg/min till explosion. The detonation temperature varied between 373 K and 375 K. The impact and friction sensitivity of detonating fuse was poor. There was no detonation when a 5 kg hammer was repeatedly hit over the fuse from a height of one metre. There was no detonation when the detonating fuse was rubbed by a blunt edge of steel plate till it was smashed.

Item Type: Article
Subjects: Explosive Research
Depositing User: Dr. Satyendra Kumar Singh
Date Deposited: 29 Feb 2012 10:02
Last Modified: 29 Feb 2012 10:02

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