DOI QR코드

DOI QR Code

국산 참나무류의 이용활성화를 위한 건조특성 및 가공수율 평가

Evaluation of Drying Properties and Yields of Domestic Quercus Species for Enhancing Utilization

  • 장윤성 (국립산림과학원 임산공학부) ;
  • 신현경 (국립산림과학원 임산공학부) ;
  • 김세종 (국립산림과학원 임산공학부) ;
  • 한연중 (국립산림과학원 임산공학부) ;
  • 김민지 (국립산림과학원 임산공학부) ;
  • 엄창득 (국립산림과학원 임산공학부) ;
  • 이영근 (국립산림과학원 산림생산기술연구소) ;
  • 심국보 (국립산림과학원 임산공학부)
  • Chang, Yoon-Seong (Department of Forest Products, National Institute of Forest Science) ;
  • Shin, Hyun-Kyeong (Department of Forest Products, National Institute of Forest Science) ;
  • Kim, Sejong (Department of Forest Products, National Institute of Forest Science) ;
  • Han, Yeonjung (Department of Forest Products, National Institute of Forest Science) ;
  • Kim, Min-Ji (Department of Forest Products, National Institute of Forest Science) ;
  • Eom, Chang-Deuk (Department of Forest Products, National Institute of Forest Science) ;
  • Lee, Young-Geun (Forest Practice Research Center, National Institute of Forest Science) ;
  • Shim, Kug-Bo (Department of Forest Products, National Institute of Forest Science)
  • 투고 : 2017.08.18
  • 심사 : 2017.09.08
  • 발행 : 2017.09.25

초록

본 연구에서는 국산 참나무류의 고부가가치재 이용기술 개발을 위해 굴참나무와 신갈나무를 대상으로 입목으로부터 마루판재까지의 가공수율을 조사하였다. 또한 참나무류 건조시간 단축을 위한 건조스케줄의 개선 및 물성평가를 수행하였다. 건조시간은 총 173시간이 소요되었으며, 최종함수율은 굴참나무 5.39%, 신갈나무 4.17%로 측정되었다. 건조에 따른 굴참나무와 신갈나무의 재색변화는 ${\Delta}E$ 값이 7~11으로 현저한 변화를 보였다. 건조에 따른 수축률은 굴참나무의 경우, 접선방향 8.1%, 방사방향 5.0%이었으며, 신갈나무의 경우, 접선방향 8.5%, 방사방향 6.2%로 평가되었다. 제재수율은 30~40%, 최종제품수율은 8~15%로 평가되었다. 본 연구에서 조사된 참나무류의 가공특성은 아직까지 저이용되고 있는 국산 활엽수의 효율적인 생산계획을 수립하는데 기여할 수 있을 것으로 기대된다.

In order to develop value-added utilization technology of domestic oaks the processing yield rate from the standing tree to the flooring material for the Quercus variabilis and Quercus mongolica were investigated. Also, to reduce drying time, improved drying schedule was applied and the physical properties were measured. The drying time was 173 hours in total, and the final moisture content was 5.39% (Quercus variabilis) and 4.17% (Quercus mongolica). The color difference of oak lumber before and after drying showed a significant change as ${\Delta}E$ value from 7 to 11. The shrinkage rates of Quercus variabilis and Quercus mongolica during drying were 8.1% and 8.5% in the tangential direction and 5.0% and 6.2% in the radial direction, respectively. The lumber manufacturing yield rate of sawn lumber was 30 to 40% and that of the final product was 8 to 15%. It is expected that the processing characteristics of the Quercus species investigated in this research could contribute to formulate an efficient production plan of domestic hardwoods that are still under utilization.

키워드

참고문헌

  1. Babos, K. 1993. Tyloses formation and the state of health of quercus pertraea trees in Hungary. IAWA Journal 13(3): 239-243. https://doi.org/10.1163/22941932-90001274
  2. Han, E.J., Cho, J.Y. 2005. Color Analysis of Printed Silk with Digital Textile Printing Method. Journal of the Korean Society of Design Culture 11(2): 126-134.
  3. Han, G.S., Jung, H.S. 1986. Effect of presurfacing on drying rate and drying defect of Quercus grosseserrata Bl. Journal of Korean Wood Science and Technology 14(4): 29-39.
  4. Hong, B.P., Jung, H.S. 1986. Study on drying characteristics of heartwood and sapwood of quercus acutissima. Journal of Korean Wood Science and Technology 14(6): 20-29.
  5. Kang, H.Y. 1992. Presteaming effect on properties of native oak lumber. Journal of Korean Wood Science and Technology 20(2): 73-80.
  6. Kang, H.Y., Kim, S.W. 2004. Air- and kiln-drying the boards and disks of Quercus variabilis. Journal of Korean Wood Science and Technology 32(1): 52-58.
  7. Lee, S.J., Jung, H.S. 1990. Studies on drying rate, stress and defect with board thicknesses and drying schedules of Quercus grosseserrata B1. Journal of Korean Wood Science and Technology 18(1): 39-51.
  8. Murmanis, L. 1975. Formation fo tyloses in felled quercus rubra L. Wood Science and Technology 9: 3-14.
  9. National Institute of Forest Science. 2013. Classification for domestic log. Nifos notification.
  10. National Institute of Forest Science. 2013. Distribution of major species on Korea. Breaking news of Forest Science. National Institute of Forest Science.
  11. Korea Forestry Promotion Institution. 2017. https://fps.kofpi.or.kr
  12. Oh, S.W. 1999. The relationship between anatomical characteristics and bending strength in major species of korean lepidobalanus. Journal of Korean Wood Science and Technology 27(1): 9-17.
  13. Rodolfo, C., Livio, T., Ottaviano, A. 2007. White beech: a tricky problem in the drying process. Proceedings of International scientific conference on hardwood processing. September 24-26, Quebec city, Canada, p. 135-140.
  14. Tarvainen, V., Saranpaa, P., Repola, J. 2001. Discoloeration of Norway spruce and Scots pine timber during drying. Proceedings of 7th International IUFRO wood drying conference. July 9-13, Tsukuba, Japan, p. 294-299.