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RISS 인기검색어
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- 저자 : DaeWoo Ihm (검색결과 3 건)
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임대우(DaeWoo Ihm),안병관(ByungKw an Ahn) 호서대학교 공업기술연구소 2015 공업기술연구 논문집 Vol.34 No.1
부식 억제제 서스펜션을 함유한 마이크로캡슐이 멜라민 포름알데하이드의 in situ 중합법에 의해 제조되었다 . 평균직경 9 .6/仰의 안정된 마이크로캡슐이 관 찰 되 었 으 며 , 이 캡슐의 표면 모폴로지와 화학구조 , 열적특성을 광학현미경 , 주사전자현미경 (SEM), 적외선 분광분석 (FT-IR), 열중량분석 (TGA)등으로 측정하였다 . 또한 이 마이크로캡슐이 자기치유 특성을 갖는 부식방지용 코팅제로서의 적용 가능성을 고찰한다 . Microcapsules containing suspension of corrosion inhibitors were prepared b y in-situ polym erization of m elam ine and formaldehyde. Stable m icrocapsules were prepared and the m ean diameter of the observed microcapsules w as in the range o f 9.6/해. T he surface m orphology and chemical structure of microcapsules were investigated using scanning electron m icroscope(SEM ), optical m icroscope(OM ), and Fourier transfo rm infrared spectroscopy (F T - IR ). T he therm al properties of samples were investigated b y therm ogravim etric an alysis(T G A ). It is suggested th at microcapsules containing suspension of corrosion inhibitors, could be used as the corrosion protection materials v ia a self-healing mechanism .
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Jinyeol Kim,Sijoong Kwon,DaeWoo Ihm 한국물리학회 2007 Current Applied Physics Vol.7 No.2
Emeraldine salt of polyaniline-dodecylbenzenesulfonic acid (PANI-DBSA) in organic solvents such as toluene and xylene wasobtained by a direct one-step emulsion polymerization technique. When the molar ratio of DBSA to aniline monomer was 1.5:1, solu-PANI-DBSA was obtained on glass or plastic substrate under ambient conditions. PANI solution can also be easily blended with poly-urethane and polystyrene polymers in toluene. Better electrical performance (up to 5 S/cm), good light transmittance (up to 70% at500 nm thickness), were obtained and more homogeneous morphology was observed for the casting lm of PANI-DBSA preparedby the present method as compared with that prepared by the aqueous emulsion polymerization. The partially dispersed PANI-DBSAsamples was conrmed from the XRD patterns.
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A simplified process for the bus electrodes of low resistance in passive matrix OLEDs
Seungjun Yi,Youn Soo Shin,DaeWoo Ihm 한국물리학회 2009 Current Applied Physics Vol.9 No.3
A simplified process for the bus electrodes of low resistance in passive matrix OLEDs using cathode separators is presented. The cathode separators are patterned both in a peripheral area and in an active area so that the bus electrodes can be formed out of a cathode metal of low resistance when the cathode metal is deposited. Using this simplified process, a single and bi-layer of aluminum and copper were tried out to form the bus and cathode electrodes and the results were analyzed. This method reduces the fabrication processes and lowers the power consumption. A simplified process for the bus electrodes of low resistance in passive matrix OLEDs using cathode separators is presented. The cathode separators are patterned both in a peripheral area and in an active area so that the bus electrodes can be formed out of a cathode metal of low resistance when the cathode metal is deposited. Using this simplified process, a single and bi-layer of aluminum and copper were tried out to form the bus and cathode electrodes and the results were analyzed. This method reduces the fabrication processes and lowers the power consumption.
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