HIGH-SPEED PHOTOGRAPHIC STUDY OF THE IMPACT RESPONSE OF AMMONIUM DINITRAMIDE AND GLYCIDYL AZIDE POLYMER

A high-speed photographic study has been performed of the rapid deform ation of ammonium dinitramide (ADN) and glycidyl azide polymer (GAP) b y drop-weight impact, ADN was found to be more sensitive than ammonium perchlorate. Both materials have been suggested as potentially useful oxidizers in explosive and propellant applications. ADN was also foun d to be sensitized by both hard high-melting point grits (60-mu m boro silicate or Pyrex(R) glass) and brittle polymers. High-density polyeth ylene was found to suppress deflagration in this material. Heat-sensit ive film was used to confirm that the events seen using high-speed pho tography were indeed deflagrations. GAP was found to be insensitive wh en impacted in this apparatus, even in the presence of additives or ga s bubbles.