Abstract
Energetic ink, combined with energetic materials and additives through adaptive three-dimensional printing technology, is a promising method of replacing traditional charge styles, and its rheological property is an important factor in the preparation process. Sorbitan monooleate (Span-80) and polyoxyethylene sorbitan monooleate (Tween-80) are two surfactants that have been commonly used to improve the rheological properties of suspensions. The influence of surfactants in the viscosity of energetic ink is a significant issue that is worth exploring. The effects of the surfactant percentage and hydrophilic−lipophilic balance (HLB) numbers on ink viscosity were obtained based on the the addition of different contents of Span-80 and Tween-80 to an ultrafine cyclotetramethylenete tranitramine (HMX)/alcohol nylon/ethanol system. The results are presented using the rules of viscosity, the non-Newtonian indexes that reflected the rheological stability, and the yield values that reflect the degree of difficulty from the static state to flow. The best HLB number that effectively increased the rheological property in this study was chosen according to the results, which may provide some reference for additives in the preparation process of energetic ink.
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