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http://dx.doi.org/10.5370/KIEE.2013.62.5.649

AC Insulation Breakdown Properties of the EMNC to Application of Distribution Molded Transformer  

Park, Jae-Jun (Dept. of Electrical Electronic Engineering, Joongbu University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.62, no.5, 2013 , pp. 649-656 More about this Journal
Abstract
A conventional epoxy-microsilica composite (EMC) and an epoxy-microsilica-nanosilicate composite (EMNC) were prepared in order to apply them to mold-type transformers, current transformers (CT) and potential transformers (PT). Nanosilicate was exfoliated in a epoxy resin using our electric field dispersion process and AC insulation breakdown strength at $30{\sim}150^{\circ}C$, glass transition temperature and viscoelasticity were studied. AC insulation breakdown strength of EMNC was higher than that of EMC and that value of EMNC was far higher at high temperature. Glass transition temperature and viscoelasticity property of EMNC was higher than those of EMC at high temperature. These results was due to the even dispersion of nanosilicates among the nanosilicas, which could be observed using transmission electron microscopy (TEM). That is, the nanosilicates interrupt the electron transfer and restrict the mobility of the epoxy chains.
Keywords
Electric fields dispersion; Epoxy microcomposites(EMC). Epoxy microsilica-nano layered silicate composites(EMNC); AC insulation breakdown strength; Glass transition temperature; DMA;
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1 Sungtack Kang, Sung Il Hong, Chul Rim Choe, Min Park, Soonho Rim, Junkyung Kim, "Preparation and characterization of epoxy composites filled with functionalized nanosilica particles obtained via sol-gel process", Polymer, Vol. 42, pp.879-887, 2001   DOI   ScienceOn
2 Y. Nakamura, M. Yamaguchi, M. Okubo, and T. Matsumoto, Journal of Applied Polymer Science. Vol. 45, pp. 1281, 1992.   DOI
3 Silvia Barus, Marco Zanetti, Massimo Lazzari, Luigi Costa, "Preparation of polymeric hybrid nanocomposites based on PE and nanosilica", Polymer, Vol. 50, pp. 2595-2600, 2009.   DOI   ScienceOn
4 S. C. Kwon and T. Adachi, Journal of Materials Science. Vol. 42, pp. 5516 ,2007.   DOI
5 Y. L. Liang, R. A. Pearson, "Toughening mechanisms in epoxy-silica nanocomposites (ESNs)", Polymer, Vol. 50, pp. 4895-4905, 2009.   DOI   ScienceOn
6 C. Xenopoulos, L. Mascia, and S. J. Shaw, Journal of Materials Chemistry, Vol. 12, pp. 213 ,2002.   DOI   ScienceOn
7 T. Imai, F. Sawa, T. Ozaki, T. Shimizu, R. Kido, M. Kozako, and T. Tanaka, "Influence of Temperature on Mechanical and Insulation Properties of Epoxy-Layered Silicate Nanocomposite",IEEE Transactions on Dielectrics and Electrical Insulation Vol. 13, No. 1; February 2006.
8 Jae-Jun Park and Jae-Young Lee, "A New Dispersion Method for the Preparation of Polymer/Organoclay Nanocomposite in the Electric Fields", IEEE Transactions on Dielectrics and Electrical Insulation Vol. 17, No. 5; pp. 1516-1522 October 2010   DOI   ScienceOn
9 Jae-Jun Park, Chang-Hoon Lee, Jae-Young Lee and Hee-Dong Kim, "Preparation of Epoxy/Micro- and Nano- Composites by Electric Field Dispersion Process and Its Mechanical and Electrical Properties", IEEE Transactions on Dielectrics and Electrical Insulation Vol. 18, No. 3; pp. 667-674, June 2011   DOI   ScienceOn
10 Li-Yu Lin, Joong-Hee Lee, Chang-Eui Hong, Gye-Hyoung Yoo, Suresh G. Advani, "Preparation and characterization of layered silicate/glass fiber/epoxy hybrid nanocomposites via vacuum-assisted resin transfer molding (VARTM)", Composites Science and Technology(66), pp. 2116-2125, 2006   DOI   ScienceOn
11 T. Imai, F. Sawa, T. Ozaki, T. Shimizu, S. Kuge, M. Kozako, and T. Tanaka,"Approach by Nano-and Micro-filler Mixture toward Epoxy-based Nanocomposites as Industrial Insulating Materials", IEEJ Trans. Fund. Mater. Vol. 126, No. 11, pp. 1136-1143. 2006.   DOI   ScienceOn
12 P. L. Teh, M. Mariatti, H. M. Akil, C. K. Yeoh, K. N. Seetharamu, A. N. R. Wagiman, and K. S. Beh, Mater. Lett. 61, 2156 (2007).   DOI   ScienceOn
13 Y. S. Cho, H. K. Lee, M. J. Shim, and S. W. Kim, "Characteristics of polymer insulator materials : Voltage-lifetime characteristics of DGEBA/MDA/SN system", Materials Chemistry and Physics Vol. 66, pp. 70-76, 2000   DOI   ScienceOn
14 R. Sarathi, R. K. Sahu, and P. Rajeshkumar, "Understanding the thermal, mechanical and electrical properties of epoxy nanocomposites", Materials Science and Engineering A 445-446, pp. 567-578, 2007   DOI   ScienceOn
15 N. Hayakawa, H. Maeda, S. Chigusa, and H. Okubo, "Partial discharge inception characteristics of $LN_2$/epoxy composite insulation system under thermal bubble condition", Cryogenics, Vol. 40, pp. 167-171,2000.   DOI   ScienceOn
16 T. Imai, F. Sawa, T. Nakano, T. Ozaki, T. Shimizu, M. Kozako, and T. Tanaka, "Effects of Nano-and Micro-filler Mixture on Electrical Insulation Properties of Epoxy Based Composites", IEEE Transactions on Dielectrics and Electrical Insulation Vol. 13, No. 1; February 2006