• Title/Summary/Keyword: Nam-myoung

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Preparation and Dielectrics Properties of Ceramic-polymer Composite Materials (세라믹-폴리머 복합체 제조 및 유전 특성)

  • Park, Myoung-Sung;Myoung, Seong-Jae;Chun, Myoung-Pyo;Jo, Jung-Ho;Nam, Joong-Hee;Kim, Byung-Ik;Nahm, Sahn
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2008.11a
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    • pp.182-183
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    • 2008
  • 본 연구에서는 유전 손실이 낮고, 고분자(LCP)의 유전율을 높이기 위하여 (100-x)LCP(polymer)-xNPO(ceramic) 복합체 (x= 0, 10, 20, 30, 40, 50)의 유전 특성 및 미세구조를 연구하였다. LCP와 ceramic filler(NPO)는 Brabender Mixer를 사용하여 $300^{\circ}C$에서 혼합한 후, Hot press 사용하여 $300^{\circ}C$, 7ton 성형 압력으로 pellet 형태 $(2.5cm\times2.5cm\times0.1cm)$로 제조 하였다. LCP-NPO 복합 소재를 SEM을 통해 미세구조를 관찰하였고, 복합체의 유전 특성을 조사하였다.

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Evaluation of Anti-Stain Efficacy of Myoung-oil, Traditional Coating Agent (전통 마감제인 명유의 방미효력 평가)

  • Yoon, Sae-Min;Park, Yonggun;Jeon, Woo-Seok;Lee, Hyun-Mi;Hwang, Wonjoung;Nam, Kee Dal;Park, Jae-Gwan
    • Journal of Conservation Science
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    • v.36 no.6
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    • pp.505-510
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    • 2020
  • In this study, the anti-stain effect of the Traditional Myoung-oil, which has been reproduced through traditional method, the Clean Myoung-oil, which was developed in an eco-friendly method through scientific analysis of Traditional Myoung-oil, and the perilla oil, which is the raw material of Myoung-oil and is currently used as a finishing agent when repairing wooden cultural properties was evaluated. As a result of the evaluation, perilla oil showed almost no anti-stain effect, whereas both types of Myoung-oil showed high anti-stain effect. However, it was confirmed that the anti-stain effect was significantly reduced after 4 weeks of exposure to the strain when Myoung-oil was diluted with terpene oil, a natural solvent. Thus, it was considered that the amount of treatment in the wood affected the anti-stain effect of Myoung-oil. In other words, in constructing wooden buildings, Myoung-o il is more suitable as a finishing agent to suppress mold growth than perilla oil. And, in order to increase the applicability of Myoung-oil, it is suggested that additional research on the optimal treatment amount and treatment method that can inhibit mold growth inhibition in outdoor environments is necessary.