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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.1
- 수록면
- 8 - 20 (13page)
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This study was conducted to analyze the pore structure of Yellow poplar. Cross-sectional surfaces of heartwood and sapwood of Yellow poplar (Liriodendron tulipifera) were observed by SEM, and the true density of the heartwood, intermediate wood and sapwood were measured by gas pycnometery, while gas permeability and pore size of heartwood, intermediate wood and sapwood were measured by capillary flow porometery. The pores were classified as through pore, blind pore and closed pore. It was determined that the permeability was increased due to the content and size of through pore being increased although the total porosity of specimen showed slight difference from pith to bark. The content of through pore porosity was 33.754 % of heartwood and 47.810 % of sapwood, showed an increasing trend from pith to bark, however, those for the blind pore porosity and closed pore porosity were 27.890 % and 19.492 % for heartwood and 19.447 % and 4.660 % for sapwood, showed a decreasing trend from pith to bark. The max pore size of specimens was increased by about 5 times from $5.927{\mu}m$ to $31.334{\mu}m$, and mean flow pore size was increased by about 315 times from $0.397{\mu}m$ to $12.437{\mu}m$ from pith to bark.
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참고문헌 (22)
참고문헌 신청
2012 / ASTM. 2012. Standard test method for true specific gravity of refractory materials by gascomparison pycnometry
2015 / ASTM. 2015. Standard test method for real density of calcined petroleum coke by Helium pycnometer
2004 / ASTM D4892-89. Standard test method for density of solid pitch (Helium Pycnometer Method)– Committee D02 on Petroleum Products and Lubricants
2011 / ASTM F316-03. Standard test methods for pore size characteristics of membrane filters by bubble point and mean flow pore test
Chen, P. Y. / 1991 / Variation in longitudinal permeability of three US hardwoods / Forest Products Journal 41(11-12):79~83
2015 / ASTM. 2015. Standard test method for real density of calcined petroleum coke by Helium pycnometer
2004 / ASTM D4892-89. Standard test method for density of solid pitch (Helium Pycnometer Method)– Committee D02 on Petroleum Products and Lubricants
2011 / ASTM F316-03. Standard test methods for pore size characteristics of membrane filters by bubble point and mean flow pore test
Chen, P. Y. / 1991 / Variation in longitudinal permeability of three US hardwoods / Forest Products Journal 41(11-12):79~83
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