• Title/Summary/Keyword: Compound Material

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A Conformational Comparison of 1,2-Bis(phenylthio)-o-carborane, $C_{14}H_{20}B_{10}S_2$, by X-Ray Diffraction Method and Molecular Orbital Calculation

  • Song, Kyu-Ho;Ko, Jae-Jung;Kang, Sang-Ook;Han, Won-Sik;Kwon, Soon-Nam;Suh, Il-Hwan
    • Korean Journal of Crystallography
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    • v.19 no.1
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    • pp.1-6
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    • 2008
  • The reaction of dilithio-o-carborane with dipenyl disulfide produces a phenyl thiolated o-carborane and it has been confirmed that there is conformational similarity between the structure of the compound elucidated by X-ray crystallography and that calculated by ab initio and density functional theory.

Conductivity Pattern Manufacture Technology of Solid Surface Compound Polymer Material (입체면 복합 폴리머 소재의 전도성 패턴 제작 기술)

  • Youn, Shin-Yong
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.65 no.3
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    • pp.224-234
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    • 2016
  • This study developed the conductivity pattern of solid surface using laser direct pattern and compound polymer material technology. For development direct patterning system of solid surface, we used the laser power stabilizer, the dynamic focusing, 3D scanner S/W and the auto aligning techniques. Also For conductivity pattern, we are developed compound polymer material with additive by electro-less plating. These technologies are already used commercially. However operation and control integrated system for direct patterning of solid surface are not yet developed. The objective of this paper is to introduce the laser direct structuring for simple process improvement instead complex PCB process, and develop the operating stability and integration system. Also we implemented new application of laser direct structuring through sample manufacture.

A Study on Fatigue Performance Evaluation of Stress Concentration of Plate Members Using Composite Material (복합재료 사용 바닥판 부재의 응력집중부에 대한 피로성능 평가에 관한 연구)

  • Park, Tai-Young;Park, Joon-Seok;Kim, Doo-Hwan
    • 한국방재학회:학술대회논문집
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    • 2008.02a
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    • pp.529-532
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    • 2008
  • Recently the compound material has interested in using the structural material as the bridge member assembly. It is the lighter material against existing construction material and has excellent durability and economy. The existing floor of bridge has its short period to repair and replace compared to other parts of the bridge with the pavement and the shoe. These deteriorations of usage and safety by aging and corrosion are needed frequent maintenance. The use of compound material as a structural member suggests solve these problems. So this thesis evaluates the static and the fatigue performance for whether there are fiber lamination direction and stress concentration section of FRP floor plate, the compound material.

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Design of the Compound Smart Material Pump for Brake System of Small·Medium Size UAV (중소형 무인기 브레이크 시스템용 복합형 지능재료펌프 설계)

  • Lee, Jonghoon;Hwang, Jaihyuk;Yang, Jiyoun;Joo, Yonghwi;Bae, Jaesung;Kwon, Junyong
    • Journal of Aerospace System Engineering
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    • v.9 no.3
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    • pp.1-7
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    • 2015
  • In this study, the design of compound smart materials hydraulic pump that can be applied to a small-medium size UAV having a limited space envelope and weight has been conducted. Compound Smart Material Pump(CSMP) proposed in this paper is composed of a pressurize pump and a flow pump for supplying the high pressure and fluid displacement to overcome the disadvantages of the piezoelectric actuator which has a small strain. Though this compound smart material pump has been designed as small size and lightweight as possible, it can sequentially supply the sufficient large flow rate and pressure required for the brake operation. For the design of CSMP, about 2,700 kg (6,000 lb) class fixed wing manned aircraft was selected. Based on the established requirements, the design of the CSMP have been done by strength, vibration, and fluid flow analysis.

A Study on the Cooling Characteristics and Subcooling Improvement of TMA-Water Clathrate Compound (TMA-물계 포접화합물의 냉각특성과 과냉각 개선에 대한 연구)

  • Park, Seul-Hyun;Kim, Chang-Oh
    • Journal of the Korean Solar Energy Society
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    • v.34 no.6
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    • pp.85-92
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    • 2014
  • This study carried out experimental on the cooling characteristics of clathrate compound including TMA(Tri-Methyl-Amine ; $(CH_3)_3N$) as a low temperature latent heat storage material. And additive was used for subcooling improvement of TMA-water clathrate compound. The conclusion of above study is as following ; TMA 25wt%-water clathrate compound is shown stable phase change and low subcooling degree. The subcooling was improved in the case ethanol($CH_3CH_2OH$) 0.5wt% is added to TMA 25wt%-water clathrate compound.

Study on the Water Vapor Permeation Properties of the Inorganic Thin Composite Film for the Passivation Layer in the OLED (유기 EL 보호층으로 적용하기 위한 무기 복합 박막의 투습율 특성 연구)

  • 김광호;이주원;김영철;주병권;김재경
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.17 no.4
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    • pp.432-438
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    • 2004
  • In this study, we investigated the WVTRs Properties of inorganic thin composite films(ITCFs) to be newly adopted as the passivation layer of the OLED to replace the inorganic compound material Because we thought that inorganic compound materials were limited to enhance the barrier property of thin film. So, ITCFs were fabricated by mixing the cooperated material with the base material. And then, ITCFs were deposited onto the plastic substrate using the electron beam evaporation system and the water vapor transmission rates(WVTRs) were measured using the Mocon equipment. As a result of the WVTR measurement, we could analyze the WVTR values for various ITCFs. ITCFs had a remarkably lower value than the inorganic compound film. Through the analysis of thin film, we can understand the crystal structure and mixed amount. Therefore, ITCFs can be used as the inorganic passivation layers of OLED with the inorganic compound film.

A Study on the Methionine Content of Cold Storage Broiler in the Cooking (Broiler저장의 온도 및 경시에 따른 Methionine 함량 변화에 관한 연구)

  • 홍종만
    • The Korean Journal of Food And Nutrition
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    • v.1 no.1
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    • pp.7-12
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    • 1988
  • In the view of the fact that data are scare concerning the change of Methionine composition of poultry meat in function of storage temperature and cooking method. The present study was carried out to change in these compounds and the results were summarized as follows. 1. The result of measuring methionine compound of raw material stored under the condition of 5$^{\circ}C$, 1$0^{\circ}C$ for 6 weeks were increased as temperature increases. 2. The result of change in methionine compound of roasting were decreased than raw material It was greatly decreased in the storage for 42 days at 1$0^{\circ}C$ and slightly decreased in the storage for 14 days at 5$^{\circ}C$ 3. When the boiling in the water, methionine compound was decreased than roasting to compare with raw material 4. By the results of this study, one of the best cooking method is roasting, because of the change in methionine compound of roasting is slightly decrease.

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A Study on the Methionine Content of Cold Storage Broiler in the Cooking (냉장계육의 조리시 메치오닌함량의 변화에 대한 연구)

  • 한은해
    • Journal of the Korean Home Economics Association
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    • v.19 no.1
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    • pp.47-52
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    • 1981
  • In the view of the fact that data are scare concerning the change of Methionine composition of poultry meat in function of storage temperature and cooking method. The present study was carried out to change in these compounds and the results were summarized as follows. 1. The result of measuring Methionine compound of Raw material stored under the condition of $5^{\circ}C$, $10^{\circ}C$ for 6 weeks were increased as temperature increases. 2. The result of change in Methionine compound of Roasting were deceased than Raw material It was greatly decreased in the storage for 42 days at 1$0^{\circ}C$ and slightly decreased in the storage for 14 days at $5^{\circ}C$. 3. when the Boiling in the water, Methoinine compound was decreased than Roasting to compare with Raw material 4. By the results of this study, one of the best cooking method is Roasting, Because of the change I Methionine compound of Roasting is slightly decrease.

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A study on DC breakdown strength due to variation of specimen shape of epoxy/SiO$_{2}$ compound material treated with silane coupling agent

  • 김명호;김재환;김경환;박찬옥;손인환;박재준
    • Electrical & Electronic Materials
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    • v.5 no.4
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    • pp.393-399
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    • 1992
  • In order to increase the coupling strength between bisphenol-A type epoxy resin and filler SiO$_{2}$ it was treated to filler with silane coupling agent[KBM-603]. To observe how silane coupling agent effects on dielectric breakdown strength of Epoxy/SiO$_{2}$ compound material, specimens of eight type were made like following. (A-1, A-2), (B-1, B-2), (C-1, C-2), (D-1, D-2) (see 2-2. Specimen) Specimen treated with silane coupling agent had always bigger dielectric breakdown strength than non-treated specimen. Under the influence of silane coupling agent, increment ratio of dielectric breakdown strength at specimen manufactured by hand drill was very bigger than that of specimen inserted spherical electrode. Therefore, as the specimen shape was varied, it was studied on effect that silane coupling agent affects on dielectric breakdown strength of Epoxy/SiO$_{2}$ compound material.

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A Study on Mechanical and Electrical Properties at Interfaces Between Epoxy and ifs Molded Metal (에폭시 매입금구 표면거칠기에 따른 전기적, 기계적 특성 연구)

  • 김수연;하영길;이성진;김영성;박완기;김성진
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 1999.05a
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    • pp.226-229
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    • 1999
  • Epoxy compound has been used as insulation material in electrical equipment for a long time because of its excellent electrical, mechanical and chemical properties. Nowdays, becoming higher voltage system, the properties of interface between epoxy and metal insert become more important. The breakdown voltage of epoxy compound for electric material is variable according to the surface roughness of metal insert. Generally, with metal insert sanding, the adhesion strength is enhanced and the breakdown strength is reduced. But in this study, we knew that the adhesion strength became enhanced but the breakdown strength didn\`t reduced with metal insert sanding. So in this study sanding. So in this study, we suggest the optimum interface condition by adjusting the surface roughness.

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