Bulk graphite is manufactured using graphite scrap as the filler and phenolic resin as the binder. Graphite scrap, which is the by-product of processing the final graphite product, is pulverized and sieved by particle size. The relationship between the density and porosity is analyzed by measuring the mechanical properties of bulk graphite. The filler materials are sieved into mean particle sizes of 10.62, 23.38, 54.09, 84.29, and 126.64 μm. The bulk graphite density using the filler powder with a particle size of 54.09 μm is 1.38 g/cm3, which is the highest value in this study. The compressive strength tends to increase as the bulk graphite density increases. The highest compressive strength of 43.14 MPa is achieved with the 54.09 μm powder. The highest flexural strength of 23.08 MPa is achieved using the 10.62 μm powder, having the smallest average particle size. The compressive strength is affected by the density of bulk graphite, and the flexural strength is affected by the filler particle size of bulk graphite.

Abstract
1. 서 론
2. 실험 방법
    2.1. 벌크흑연 제조
    2.2. 미세조직 관찰
    2.3. 부피밀도 및 기공율 측정
    2.4. 기계적 특성 분석
3. 결과 및 고찰
    3.1. 미세조직 관찰
    3.2. 부피밀도 및 기공률
    3.3. 압축강도
    3.4. 굽힘강도
4. 결 론
References

• 이상혜(금오공과대학교 신소재공학과) | Sang Hye Lee (School of Materials Science and Engineering, Kumoh National Institute of Technology)
• 이상민(금오공과대학교 신소재연구소) | Sang Min Lee (Advanced Material Research Center, Kumoh National Institute of Technology)
• 장원표(금성테크) | Won Pyo Jang (GeumSungTech)
• 노재승(금오공과대학교 신소재공학과) | Jae Seung Roh (School of Materials Science and Engineering, Kumoh National Institute of Technology) Corresponding Author