코르크참나무 수피(코르크)의 물리적 성질에 관한 연구 = The Physical Properties of the Bark of Quercus suber L.

다국어 초록 (Multilingual Abstract)

The anatomical, physical and mechanical properties of the bark of Quercus suber L. were examined for comparing with those of Quercus variabilis Blume. The results obtained are as follows ;
1)The cork tissue consists of cork cells(92.9%), lenticels(4.6%), sclereids(0.6%) and darkbrown zone(1.8%).
2)The average ring widths and the percentage of late cork were 2.06mm and 10.6%, respectively.
3)Density in oven-dry and in air-dry of the cork were 0.18g/cm3 and 0.19g/cm3, respectively.
4)The amounts of water absorption for 24 hours, in the tangential, cross and radial sections were 1.00×10-2, 0.53×10-3 and 0.49×10-2(g/cm2), respectively.
5)E.M.C. for the cork(7.1%) was found about 5% lower than that for woods.
6)Total shrinkage and swelling of the cork were slightly smaller in the radial direction than in the tangential and longitudial directions, but shrinkage and swelling could be considered isotropic practically.
7)The modulus of elasticity on compression in radial direction(484kgf/cm2) was approximately twice of those in tangential(316kgf/cm2) and longitudial direction(282kgf/cm2).
8)When compressed 0.1, the cork recovered almost to its original dimension in all three directions, immediately after being unloaded. However, when 0.5 compressed, cork recovered by about 80% immediately after being unloaded and after 24 hours had recovered by approximately another 5%.

목차 (Table of Contents)

• 서언
• 재료 및 방법
• 1.재료
• 2.방법
• 결과 및 고찰
• 1.코르크의 구조
• 2.물리적 성질
• 3.기계적 성질
• 적요
• 인용문헌