Summary Report on Desensitizing CP Explosive to Electrostatic Discharge Via Additives.

摘要

The purpose of this study was to experimentally investigate the possibility of desensitizing pressed CP (2-(5-cyanotetrazolato)pentaamminecobalt (III) perchlorate) explosive to electrostatic discharge through the incorporation of small percentages of additives. It was subsequently shown that graphite,calcium stearate and aluminum flake in the amounts of 3to 5weight percent were effective in reducing the electrostatic spark sensitivity of CP explosive by one or more orders of magnitude at a given CP concentration. The desensitization was accomplished with little change in the explosive output. An unexpected benefit was an improvement in the no-fire current from 0.75amp to 0.986for CP with 5weight percent aluminum flake. Detrimental effects discovered include sensitization of mixtures containing small percentages of electrical conductors,ignition of CP/aluminum mixtures upon multiple pulsing and possible electrical conductivity and compatibility problems. The advantages appear to outweigh the disadvantages sufficiently that the use of additives (not necessarily the ones used in this study) appears warranted. (ERA citation 04:017032)