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Received July 31, 2013
Accepted February 20, 2014
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B-KNO3 점화제의 가속 노화 특성 연구
A Study on Acceleration Aging Characteristics of B-KNO3 Igniter
국방과학연구소 4본부, 305-152 대전 유성구 북유성대로 488번길 1(주)한화 종합연구소, 305-156 대전 유성구 외삼동 52-1
Agency for Defense Development, Bugyuseong-daero, 488beon-gil, Yuseong-gu, Daejeon 305-152, Korea 1R&D Center, Hanhwa, 52-1 Woisam-dong, Yuseong-gu, Daejeon 305-156, Korea
paikjg@add.re.kr
Korean Chemical Engineering Research, April 2014, 52(2), 166-174(9), 10.9713/kcer.2014.52.2.166 Epub 1 April 2014
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Abstract
본 연구에서는 점화제로 사용되는 B-KNO3의 가속노화 실험에 따른 특성변화를 고찰하였다. 점화제는 보관 방법이나 보관기간에 따라 점화 효율이 저하되는 경향이 있으며 안정된 사용을 위해서는 이에 대한 명확한 이해가 필요하다. 따라서 노화에 대한 원인 규명을 위해 가속화 시험 시편의 미세구조와 결정구조 및 열분석을 수행하였으며 점화 특성에 끼치는 영향성을 규명하고자 하였다. 산화제로 첨가된 KNO3의 결정구조를 분석함으로써 노화에 끼치는 산화제 영향을 해석하였다. 결론적으로 산화제의 결정구조가 안정한 구조로 변화되었으며 활성화 에너지변화에 영향을 끼쳤다.
This research investigated the aging properties of the B-KNO3 system as the igniter. The B-KNO3 system showed the degradation in ignition properties depending on the method and period of storage. It should be found out the cause of the degradation to predict the reliability of the igniters. The changes of the properties by the degradation after aging tests were analyzed by microstructure analysis, XRD analysis and thermal analysis using DSC. It was found out that the_x000D_
lattice parameters of the KNO3 as the oxidizer in the ignition system was changed into the JCPDS values as the aging time increased. Conclusively, the changes of the crystal structure of oxidizer affected the activation energy increasing as aging time increased.
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Umbrajkar SM, Schoenitz M, Dreizin EL, Thermochim. Acta, 451(1-2), 34 (2006)
Kwon J, Ducr JM, Alphonse P, Bahrami M, Petrantoni M, Veyan JF, Tenailleau C, Estve A, Rossi C, Chabal YJ, ACS Appl. Mater. Interfaces, 5(3), 605 (2013)
Comyn RH, “Pyrotechnic Research at DOFL, part II. PyroTechnic Delays,” AD report 273042 (1962)
Pretz A, American Institute of Aeronautics and Astronautics, 82(june), 1189 (1982)
Valenta FJ, “MTV as a Pyrotechnic Composition for Solid Propellant Ignition,” 13th Pyrotechnic Seminar, Grand Junction, CO, USA, July (1988)
Yano Y, Propellant, Explosive, Pyrotechnics, 14(5), 187 (1989)
Chen S, Liu JT, Zeng Q, J. Therm. Anal. Calorim., 80(1), 229 (2005)
Berger B, PROPELLANT-EXPLOS-PYROTECH, 30(1), 27 (2005)
Bhingarkar V, Singh H, Defence Science Journal, 56(3), 345 (2006)
Cho KH, Kim EY, Korean Chem. Eng. Res., 48(6), 695 (2010)
Rajendran AG, Chandrabhanu KS, Rani Krishnan KR, Kartha CB, “Effect of Aging on the Calorific Value and Ignitability of Boron/Potassium Nitrate Charge,” 3rd International High Energy Material Conference and Exhibit, Thirubananthapuram. India, 419- 422 (2000)
Weiser V, Roth E, Eisenreich N, “Burning Behavior of Different B/KNO3 Mixture at Pressure up to 4 MPa,” 37th International Annual Conference of ICT on Energetic Materials, Kahlsruhe, Germany (2006)
“Pallets/Granules Boron/Potassium Nitrate,” MIL-P-46994B (1982)
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Lui QY, Bei YL, Qu GB, Ding YJ, Korean J. Chem. Eng., 25(5), 180 (2008)
Lu HM, Hardy JR, Phys. Rev. B, 44, 7215 (1991)
