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LCD Colorfilter용(用) Millbase의 분산특성과 레올로지 거동
나대엽,정일봉,남수용,유춘우,최용정,Na, Dae-Yup,Jung, Il-Bong,Nam, Su-Yong,Yoo, Choon-Woo,Choi, Yong-Jung 한국전기전자재료학회 2007 전기전자재료학회논문지 Vol.20 No.5
LCD color filters have been manufactured in a process called photolithography to date, but various printing methods have been studied currently in response to the trend of low-end LCD panels. Direct Printing Process is a suitable fabrication technique to develope pigment components whose dimensions are in nano. The success of this process depends on the systematic preparation of pigment millbase. Conventional millbase dispersions are constituted of the organic pigments, monomer, dispersant and solvents. An experimental study on the rheology of millbase dispersions is presented. Subsequently, this thesis attempts to find out the dispersive characteristics as well as the selection of pigments, monomers and dispersants in the part of millbase among the stages of manufacturing LCD color filters using the direct printing methods. The dispersive characteristics were shown through analytic devices such as PSA, Rheometer, etc.
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아임계와 초임계유체로써 폐타이어 분해와 추출에 미치는 용매의 영향
강원석(W . S . Kang),나대엽(D . Y . Na),김인실(I . S . Kim),한성범(S . B . Han),박판욱(P . W . Park) 한국고무학회 1999 엘라스토머 및 콤포지트 Vol.34 No.3
N/A Side wall samples from a used automotive tire were subjected to subcritical and supercritical decomposition and extraction with three solvents, water, 28% ammonia solution and ammonia. For 6㎜ cube samples the rate of supercritical extraction with water followed a first-order kinetics with an activation energy of 140 kJ/㏖. Solvent power of 28% ammonia solution at supercritical condition was found to be higher than supercritical water at initial extraction as pressure decreased. These phenomena were considered to be an effect of ammonia involved in water.
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