http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
오늘 본 자료
李準雄 光云大學校 1976 論文集 Vol.5 No.-
The lower dielectric constant obtainable with foamed insulation of FEP resin varies directly with void content. In order to decrease the dielectric constant of Fluorinated Ethylene Propylene (FEP) resin has made use of foaming specimens. As the results of the study, the logarithm of the dielectric constant decrease linearly from 2.1 of pure FEP resin to 1.52 or less, and at 1 mega Hertz, dielectric loss tangent is also observed about ????? order, so it is very suitable for high frequency insulation cable. The volume resistivity ????? ��m was obtained.
이준웅,LEE, Junwung 한국군사과학기술학회 2015 한국군사과학기술학회지 Vol.18 No.4
MOFs(Metal-Organic Frameworks) are new kinds of materials comprised of metal ions and functional organic ligands, and have large pores in its rigid structures which give the materials various functionalities, including gas absorption, separation, drug delivery etc. Recently photoluminescence properties of MOFs and possibilities of its application to high explosive sensing technologies are drawing attentions from scientists and engineers, because these methods are simple, cheap and easy to perform detection operations. In this article the author reviews the mechanisms of photoluminescence of MOFs, the detection methods of high explosives using MOFs and recent research progresses based on the papers published mainly during last 10 years.
고분자 결합제를 함유한 입상체의 압축특성 1 압축과정의 분류
이준웅,이승무,김현수,박방삼 한국화학공학회 1989 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.27 No.3
고분자 물질(Viton-A, Estane, PE)을 결합제로 사용하여 분체상 물질(Filler-R, CaCO₃)을 피복-응집시킨 입상체의 압축특성을 규명하기 위하여, 분체의 압축성과 복원성의 정량적 산출이 가능한 실시간 자료 수집장치를 개발하였고, 압축-해압 전체과정 동안 가압상태하의 밀도를 연속 측정함으로써 결합제종류, 입상체 크기 및 입도분포에 따른 단계별 압축과정을 분류하였다. The compression characteristics of the flocculated granule with polymeric binders were investigated. To evaluate quantitatively the compressibility and reassertion (postpressing growth) of the granular bed, real time data acquisition system was specially designed. Nearly continuous pressure-density curves clearly showed the dominating volume-reduction mechanisms during the entire compression and decompression process and showed the effects of the binder characteristics, granule size.
이준웅,이성일,홍진웅,주인규 한국고무학회 1993 엘라스토머 및 콤포지트 Vol.28 No.3
The dielectric properties of silicone rubbers are very important to investigate the polymer structure. The characteristics of the dielectric absorption in silicone rubbers were studied in the frequency range of 30㎐ to 1×106㎐ at the temperature range of 30℃ through 170℃. As the results of the study, dielectric constant, tangent 8 were measured 2.8∼4.5, 0.007∼0.08.
이준웅,김현수,박방삼 한국화학공학회 1990 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.28 No.1
고분자 물질을 결합제로 사용하여 고형충전물을 피복-응집시킨 입상체를 압축할 때, 입상계층 내의 intragranular stress, 입자-벽면간의 마찰, 압축밀도간의 상관관계를 규명하였다. 입상체층 상단에 가해진 압력과 하단에 전달간 압력간에는 선형관계가 성립되었고, 압축밀도에 대한 입상체크기와 입도분포의 영향은 결합제의 특성에 의해 결정되었다. When the flocculated granule with polymeric binders were compressed, correlations for intragranular stress, particle-wall friction, and %TMD in the granular bed has been investigated. The relation between the applied pressure and the transmitted pressure was linear over the entire applied pressure range for all of the samples. The effect of the granule size and distribution on the compacted density was dominated largely due to the binder characteristics.