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오영석(Youngseok Oh),서대우(Daewoo Suh),김영진(Youngjin Kim),최재붕(Jaeboong Choi),백승현(Seunghyun Baik) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
Conductive polymers, prepared by mixing electrically conductive fillers with a suitable polymeric formulation, are widely used in applications such as interconnecting materials for high density electronic packaging. However, resins of conductive pastes used as binders and vehicles are generally nonconductive, so that they may prevent the electrical contact between conductive fillers and reduce electron transmission. In this study, we improved conductivity of silver paste by the incorporation of cabon nanotubes. It is important to achieve homogeneous dispersion of CNTs to act as reinforcements efficiently in matrix. We carried out acid treatment on nanotubes for their homogeneous dispersion in silver/conducting polymer matrix. The dispersion states of nanotubes were characterized by raman spectra and filed emission scanning electron microscope. The electrical resistivity of CNTs incorporated silver paste was also measured by 4-point probe method.
이정익(Jeongick Lee),이병채(Byungchai Lee),정기삼(Kisam Jeong),이현미(Hyunmi Lee),서대우(Daewoo Suh) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11
This paper showed three years result of specialized plan which is currently needed in specialization of college. The education purpose of our college is throughly focused on having a practical analysis on the base of sound knowledge in inner side and having a growing up an expert human resources in outer side. In doing so, the most suitable and the most applicable development of specialized educational procedure is made for our junior college students. The results of this paper are helpful to specializing college in economically and institutionally.