Browse > Article
http://dx.doi.org/10.5658/WOOD.2018.46.5.471

Dimensional Stabilization through Heat Treatment of Thermally Compressed Wood of Korean Pine  

Lee, Jeong Min (Department of Wood and Paper Science, College of Agriculture & Life Sciences, Kyungpook National University)
Lee, Won Hee (Department of Wood and Paper Science, Institute of Agricultural Science and Technology, College of Agriculture & Life Sciences, Kyungpook National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.46, no.5, 2018 , pp. 471-485 More about this Journal
Abstract
Post-heat treatment experiments were carried out for complete dimensional stabilization of thermally compressed wood (Pinus koraiensis). An absorption test was carried out to evaluate the dimensional stability. The specific gravity increased from 0.43 to 0.79 by thermal compression at a compression ratio of 50% thickness. Through the post-heat treatment of compressed wood, the water absorption and thickness swelling decreased with increasing the heat treatment temperature and time. In the case of the thickness recovery rate, when the heat treatment was performed for 24 hours at $120^{\circ}C$, $140^{\circ}C$ and $160^{\circ}C$, the thickness recovery was less than 1%. Therefore, it can be confirmed that the method of dimensional stabilization method of the thermal compression wood can be carried out very effectively through post heat treatment process.
Keywords
thermally compressed wood; dimensional stabilization; swelling; water absorption; post-heat treatment;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Cho, B.G., Hwang, S.W., Kang, H.Y., Lee, W.H. 2015. Change of Dimensional Stability of Thermally Compressed Korean Pine (Pinus koraiensis Sieb. et Zucc.) Wood by Heat Treatment. Journal of the Korean Wood Science and Technology 43(4): 470-477.   DOI
2 Dwianto, W., Inoue, M., Norimoto, M. 1997. Fixation of compressive deformation of wood by heat treatment. Mokuzai Gakkaishi 43(4): 303-309.
3 Gerhards, C.C. 2007. Effect of moisture content and temperature on the mechanical properties of wood: an analysis of immediate effects. Wood and Fiber Science 14(1): 4-36.
4 Hillis, W.E. 1984. High temperature and chemical effects on wood stability. Wood Science and Technology 18(4): 281-293.   DOI
5 Hwang, S.W., Cho, B.G., Lee, W.H. 2014. Mechanical Properties of Thermally Compressed Domestic Softwoods. Journal of the Korean Wood Science and Technology 42(6): 666-674.   DOI
6 Hwang, S.W., Cho, B.G., Lee, W.H. 2015. Hardness and Dimensional Stability of Thermally Compressed Domestic Korean Pine. Journal of the Korean Wood Science and Technology 43(1): 68-75.   DOI
7 Inoue, M., Norimoto, M., Tahanashi, M., Rowell, R.M. 1993. Steam or heat fixation of compressed wood. Wood and Fiber Science 25(3): 224-235.
8 Inoue, M., Sekino, N., Morooka, T., Rowell, R.M., Norimoto, M. 2008. Fixation of Compressive Deformation in Wood by Pre-Steaming. Journal of Tropical Forest Science 20(4): 273-281.
9 Inoue. M., Norimoto, M., Otsuka, Y., Yamada, T. 1991. Surface compression of coniferous wood lumber. II. Mokuzai Gakkaishi 37: 227-233.
10 Inoue. M., Norimoto, M. 1991. Permanent fixation of compressive deformation in wood by heat treatment. Wood Res Tech Notes 27: 31-40.
11 Jung, S.S., Lee, W.H. 1998. Characteristics of Moisture Absorption for Heat-Compressed Wood. [Characteristics of Moisture Absorption for Heat- Compressed Wood]. Journal of the Korea furniture Society 9(1): 9-16.
12 Korea Forest Service. 2018. Statistical Yearbook of Forestry.
13 Norimoto, M., Ota, C., Akitsu, H., Yamada, T. 1993. Permanent Fixation of Bending Deformation in Wood by Heat Treatment. Wood Research : bulletin of the Wood Research Institute Kyoto University. No 79: 23-33.
14 Korean Standard Association. 2014. KS F 2204 Method of test for water absorption of wood.
15 Laine, K., Belt, T., Rautkari, L., Ramsay, J., Hill, C.A.S., Hughes, M. 2013. Measuring the thickness swelling and set-recovery of densified and thermally modified Scots pine solid wood. Journal of Materials Science 48(24): 8530-8538.   DOI
16 Morsing, N. 2000. Densification of wood. The influence of Hygrothermal treatment on compression of beech perpendicular to the grain. Department of Structural Engineering and Materials Technical University of Denmark. Series R No 79.