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세라믹(BNT)-폴리머(LCP) 복합체 제조 및 유전특성
박명성,전명표,조정호,남중희,최병현,남산,Park, Myoung-Sung,Chun, Myoung-Pyo,Cho, Jung-Ho,Nam, Joong-Hee,Choi, Byung-Hyun,Nahm, Sahn 한국전기전자재료학회 2009 전기전자재료학회논문지 Vol.22 No.11
In this research, the composites (100-x)LCP-xBNT (x = 0, 10, 20, 30, 40 vol.%) were fabricated with thermoplastic LCP(Liquid Crystal Polymer) and BNT($BaNd_2Ti_4O_{12}$) which is a high frequency dielectric material. Their dielectric properties, mechanical strength and microstructure were investigated by Impedance analyser, Instron and SEM. In order to fabricate LCP-BNT composites, LCP resin was put into the twin screw type mixer($310^{\circ}C$), melted by keeping for 10 min. After that, BNT filler was dispersed with melted LCP resin for 15 min. in the mixer. For measuring the dielectric properties and mechanical strength, Composite specimens were made by pressing composite granule (LCP-BNT) with 7 ton in the mold at $310^{\circ}C$. With increasing the BNT content (0~40 vol.%) of the composite, Its dielectric constant increased, dielectric loss and flexural strength decreased. The dielectric constant and flexural strength of composites with 20~30 vol.% of BNT filler are 4.1~6.0 and 35~55 MPa respectively. BNT/LCP composite is the potential substrate material for the high frequency application.
보일러 스팀 운영 최적화를 위한 축열기 효율 향상 제어 시스템 개발 및 실증
박명성,이정한 제어·로봇·시스템학회 2023 제어·로봇·시스템학회 논문지 Vol.29 No.10
To ensure competitive advantage in the steelworks industry, the operation of the steam boiler used during the production process must be optimized. The by-product gas generated in a steel mill is used as a raw material for the steam boiler. As the amount of heat generated by the boiler depends on the process and raw materials used, the varying properties of the by-product gas lead to significant fluctuations in the amount of steam produced. This study proposes a method for correcting the calorific value of the raw material input to the boiler for stable steam production through an equation; further, the effectiveness of the method is verified by applying the correction equation to actual boiler operation.
보일러 스팀 발생 안정화를 위한 부생가스 열량 보정 방안 실증 평가
박명성(Myung-Sung Park),이정한(Joung-Han Lee) 제어로봇시스템학회 2021 제어·로봇·시스템학회 논문지 Vol.27 No.5
To secure the competitiveness of continuous steelworks, it is necessary to optimize the amount of steam used during the production process. The by-product gas generated in a steel mill is used as a raw material for the boiler that produces steam in the process, and the amount of heat provided by the by-product gas fluctuates considerably depending on the process and raw materials. Consequently, the amount of steam produced fluctuates considerably. In this paper, we describe a method to correct the calorific value of the raw material input to the boiler for stable steam production through an equation and verify the effect of this correction equation on actual boiler operation.
Intestinal parasite infections in the inhabitants along the Hantan River, Chorwon-gun
Myung-Sung Park(박명성),Sun-Woong Kim(김선웅),Yong-Sang Yang(양용상),Chan-Hum Park(박찬흠),Won-Tae Lee(이원태),Chang-Uck Kim(김창억),Eun-Mi Lee(이은미),Soo-Ung Lee(이수응),Sun Huh(허선) 대한기생충학열대의학회 1993 The Korean Journal of Parasitology Vol.31 No.4