Investigation On Detonation Failure Of Emusion Matrix And Emusion Explosive

In this paper, a machine which presses emulsion explosive and emulsion matrix into several tubes of different material is designed. This paper studies on the critical diameter of emulsion matrix. Based on the critical diameter of emulsion matrix, the critical thickness of emulsion matrix is measured. By measuring the detonation velocity of corner effect and a helical curved charge, the experiment shows quantitatively that detonation is failure in a curved charge when the charge curvature is more than certain critical value and the detonation steadily propagates along linear charge. Main conclusions are as follows:(1) The critical diameter of emulsion matrix is related deeply to constraint conditions of tubes and the temperature of emulsion matrix in kinds of tubes. When constraint conditions are stronger and the temperature is higher, the critical diameter of emulsion matrix will become smaller. The critical diameter of emulsion matrix: At ordinary temperatures, the critical diameter of emulsion matrix, which is charged in containing seamless tubes of 3mm thickness, is 15mm; When the charge temperature is at 90℃,100℃,110℃and 120℃, the critical diameters of emulsion matrix are 50mm,48mm,34mm and 32mm in the stainless steel tube of 0.3mm thickness, respectively.(2) The critical thickness of emulsion matrix is related deeply to constraint conditions and charge temperature, too. The critical thickness of emulsion matrix: when a ceramic tube of 4.5mm thickness is put into emulsion matrix along its axes, charged in a stainless steel tube 48mm in diameter, 3.0mm thick, 400mm long, the critical thickness of emulsion matrix is greater than 16mm.(3) The experiment on helical curved charges shows that detonation is failure in a curved charge when the charge curvature is more than certain critical value and the failure diameter will become greater and the failure curved radius will become smaller when constraint conditions are stronger and the charge temperature is higher. When the charge temperature is at 130℃and the curved radius is 60mm, detonation along the helical curved charge is failure in a stainless steel corrugated tube, 25mm to 32mm in diameter and 0.3mm thick, curved like a helical curve.