The Effect of Stabilizer(DPA, <TEX>$CaCO_3$</TEX>) Addition on the Shelf Life of the Single Base Propellant

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Journal of the Korea Institute of Military Science and Technology 2003;6(2):9-19.

The Effect of Stabilizer(DPA, $CaCO_3$) Addition on the Shelf Life of the Single Base Propellant

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단기추진제 저장수명에 미치는 안정제(DPA, $CaCO_3$) 첨가의 효과

윤근식, 고석일, 유승곤

¹국방품질관리소
²충남대학교 화학공학과

Abstract

Nitrogen oxide gases which were produced by spontaneous reaction of nitrocellulose(NC) in the single base propellant accelerate the decomposition of propellant, and result in the reduction of shelf life. The amount of nitrogen oxide was reduced by the addition of 0.3wt% $CaCO_3$ to conventional stabilizer(DPA) and down of the solvent leaching temperature from $64^{circ}C$ to $56^{circ}C$, which extended the shelf life of the single base propellant as much as twice compare with commercial propellant. The perforation diameter increase of propellant from 0.64mm to 0.77mm could compensate for the drop of burning rate which was caused the addition of $CaCO_3$.

Key Words: Propellant, Shelf Life, Stabilizer