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RISS 인기검색어
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- 저자 : 강신재(S.J. Kang) (검색결과 75 건)
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CNT 직경에 따른 CNT-Polyamide 복합체의 특성 변화
박영수(Y.S. Park),송준혁(S.J. Song),김경재(K.J. Kim),허몽영(H.M. Huh),유명한(M.H. Yoo),문민석(M.S. Moon),오제하(J.H. Oh),정우성(W.S. Jeong),강신재(S.J. Kang),양성모(S.M. Yang) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
The effect of CNT diameters on properties of CNT-polyamide composites were investigated such as electrical conductivity, tensile strength and thermal conductivity. To get different diameter distributions of CNTs, several portions of Mo and Fe in Mo-Fe/MgO catalysts were synthesized by a combustion method at 600℃. And all CNTs growed at 900℃ with 3 SLM methane and 1 SLM hydrogen for 40min. Four kinds of CNTs with different diameter distributions, such as 1~3㎚, 3~7㎚, 7~13㎚, and 10~30㎚, were selected to make CNT-polyamide composites. Each composite was manufactured by a solution mixing using bar-type ultra-sonicator in the CNT portions from 1phr to 50 phr. And electrical conductivity, tensile strength, and thermal conductivity were measured. Three properties of CNT-polyamide composite, manufactured with 10㎚ diameter, were more excellent compared to other composites, with electrical conductivity 10°Ω at 7phr, thermal conductivity 2.4.W/mK at 40phr, tensile strength 60㎫ at 30phr. CNTs with diameter 10㎚ were superior to other diameters for the multi-functional composite such as CNT-polyamide Composites.
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논문 ( Contributed Papers ) : 이중공기공급 속도비에 따른 이류체 선회분무 특성 연구
강신재(S J Kang),오제하(J H Oh),송기정(K J Song),노병준(B J Rho) 한국분무공학회 2000 한국분무공학회지 Vol.5 No.3
In this study, spray characteristics of a dual airblast atomizer are addressed. Three dimensional characteristics of a dual airblast atomizer with air swirl are measured to Provide the significant data The liquid flow rate was fixed at 0.06 kg/min, and atomizing air was controlled at the liquid-air mass ratio of 4.0. The performance of the spray with co-swirl and counter-swirl flow was investigated at each point in the developed spray region using a Un~e-component phase Doppler particle analyzer. This instrument was also used to evaluate the concentration profiles. The three dimensional mean velocity were investigated to present flow characteristics of the dual airblast atomizer. 1n addition, drop size distributions, mean droplet size profile, and droplet concentration were analyzed to understand atomization characteristics. This experimental results can be conveniently utilized for the preliminary design of gas turbine engines for aircraft.
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