Influences of additives on HMX crystal morphology

The influences of additives (acetamide, acrylamide and ethylamine) on HMX crystal morphology were studied by theoretical computation and experiment methods. The results show that the sequence of additives influences on HMX crystal morphology was: acetamide> acrylamide> ethylamine. Acetamide had negative influence on HMX crystal morphology and made HMX crystal morphology change in non-spherical direction, and acrylamide had active influence on HMX crystal morphology. Due to the attachment energy of ethylamine to HMX crystal faces was low, a clear variation of HMX crystal morphology has not been founded. The results of experiments have a good agreement with theoretical computation results. The additives have no influence on crystal purity. The acrylamide made the sensitivity of HMX crystal change better and the stability of HMX crystal change little.