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Korean Chemical Engineering Research,
Vol.49, No.4, 443-448, 2011
Vol.49, No.4, 443-448, 2011
활성탄소섬유를 이용한 추진제 저장수명 연장
Propellant Shelf-life Extension by Surface-modified Activated Carbon Fiber
추진제는 저장 중 발생되는 질소산화물로 인해서 저장수명이 짧아진다. 추진제의 저장수명을 연장할 목적으로 활성 탄소섬유로 추진제에서 발생하는 질소산화물을 흡착하였다. 활성탄소섬유에 폐추진제를 첨착시키고 열처리하여 표면을 개질한 결과 비표면적이 약간 감소하였으나 피리딘(pyridine), 피리돈(pyridone) 및 피롤(pyrrol) 등의 질소기능기가 생기는 것을 확인하였다. NO에 대한 흡착시험을 통해서 표면개질한 활성탄소섬유의 흡착능이 개질 이전의 활성탄소 섬유에 비해 약 2배 증가하였다. 그리고 추진제에 대한 가속수명시험 결과 표면개질한 활성탄소섬유를 동봉하면 추진제의 저장수명이 약 25% 증가하였다.
The propellant has a short shelf-life because of nitrogen oxides that were released from nitrocellulose decomposition. As-received and surface-modified ACFs were applied to remove the nitrogen oxides with intend to extend the shelf-life of propellant. The specific surface area of modified ACFs was slightly decreased but nitrogen function groups such as pyridine, pyridone and pyrrol were created on the surface of ACFs. As a result, the NO removal capacity of the surface-modified ACF by propellant waste increased about twice than that of the as-received ACF. The shelf-life of propellant was extended about 1.25 times by accompanying surface-modified ACF.
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