Influences of charge porosity on cook-off response of explosive

A cook-off equipment was developed to explore influences of charge porosity on the cook-off response of explosives. The cook-off test was carried out by taking the TNT and JB-B explosives for examples. Experimental results indicate that with the increase of charge porosity, the lasting time from the beginning of self-acceleration decomposition reaction to the start of cook-off reaction is prolonged, the corresponding cook-off temperature is elevated, and the violence of the cook-off response is intensified.