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Fabrication of isotropic bulk graphite using artificial graphite scrap

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2014, 15(2), pp.142-145
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General

Sang-Min Lee 1 강동수 1 김우석 2 Roh, Jae-Seung 1

1금오공과대학교
2주식회사 카보랩

Accredited

ABSTRACT

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 carbonizing 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 confirmed by 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 anisotropy ratio calculated from the Da-values obtained was 1.13, which indicates comparatively good isotropy.

Citation status

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Total Citation Counts(KCI+WOS) (13) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

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