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Fabrication of isotropic bulk graphite using artificial graphite scrap KCI 등재

  • 언어ENG
  • URLhttps://db.koreascholar.com/Article/Detail/278146
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Carbon Letters (Carbon letters)
한국탄소학회 (Korean Carbon Society)
초록

Isotropic synthetic graphite scrap and phenolic resin were mixed, and the mixed powder was formed at 300 MPa to produce a green body. New bulk graphite was produced by carbon-izing the green body at 700°C, and the bulk graphite thus produced was impregnated with resin and re-carbonized at 700°C. The bulk density of the bulk graphite was 1.29 g/cm3, and the porosity of the open pores was 29.8%. After one impregnation, the density increased to 1.44 g/cm3 while the porosity decreased to 25.2%. Differences in the pore distribution before and after impregnation were easily confirmedby observing the microstructure. In addition, by using an X-ray diffractometer, the degrees-of-alignment (Da) were obtained for one side perpendicular to the direction of compression molding of the bulk graphite (the “top-face”), and one side parallel to the direction of compression molding (the “side-face”). The anisot-ropy ratio calculated from the Da-values obtained was 1.13, which indicates comparatively good isotropy.

저자
  • Lee, Sang-Min(School of Advanced Materials and Systems Engineering, Kumoh National Institute of Technology)
  • Kang, Dong-Su( School of Advanced Materials and Systems Engineering, Kumoh National Institute of Technology) | Kang, Dong-Su
  • Kim, Woo-Seok( Carbolab Co., Ltd.) | Kim, Woo-Seok
  • Roh, Jea-Seung( School of Advanced Materials and Systems Engineering, Kumoh National Institute of Technology) | Roh, Jea-Seung