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Properties of Board Manufactured from Sawdust, Ricehusk and Charcoal

톱밥과 왕겨 및 숯을 이용하여 제조한 보드의 성질

  • HWANG, Jung-Woo (Department of Wood Science & Technology, Jeonbuk National University) ;
  • OH, Seung-Won (Department of Wood Science & Technology, Jeonbuk National University)
  • Received : 2019.11.04
  • Accepted : 2019.12.27
  • Published : 2020.01.25

Abstract

In this study, the environmentally friendly material charcoal was added to ricehusk, an agricultural by-product, and sawdust, which emerges during the sawing process, to produce board by mixing ratio and concentration levels of ricehusk and charcoal; it then investigated its physical properties for development purposes and achieved the following results. The water absorption and thickness swelling of the compounded board produced per adding ratio of ricehusk and charcoal showed a gradually decreasing tendency along with the increase in adding ratio of the charcoal, and as the density of the compounded board increased, the water absorption decreased, while the thickness swelling increased. The internal bond strength of the compounded board had indicated its highest value of 0.49N/㎟ at the density of 0.7g/㎤. This satisfied the quality standard for KSF 3104 Particleboard. The internal bond strength of the compounded board manufactured per adding ratio of ricehusk and charcoal showed a steady decrease with the decrease in the adding ratio of ricehusk, and an increase in the addingratio of the charcoal. Also, in cases when the ratio of the ricehusk and charcoal by KSF 3104 quality standard were 35:5 and 30:10, it satisfied the quality standard of 15.0-type, whereas it satisfied the 13.0-type quality standard if the ratios were 25:15 and 20:20. It showed a tendency of increasing hardness of the compounded board with the increase in density, and decreasing hardness with the increase in the adding ratio of the charcoal.

본 연구에서는 농업부산물인 왕겨와 제재과정에서 발생되는 톱밥에 환경 친화적인 소재인 숯을 첨가하여 왕겨와 숯의 혼합비율 및 밀도별로 보드를 제조한 후 용도개발을 위하여 물리적 성질을 조사하여 다음과 같은 결과를 얻었다. 왕겨 및 숯의 첨가율 별로 제조된 혼합보드의 수분흡수율과 두께팽윤율은 숯의 첨가율이 증가할수록 완만하게 감소하는 경향을 나타내었고, 또한 혼합보드의 밀도가 증가할수록 수분흡수율은 감소하고 두께팽윤율은 증가하는 경향을 나타냈다. 혼합보드의 박리강도는 밀도가 0.7g/㎤일 때 0.49N/㎟로 가장 높은 수치를 나타내었다. KSF 3104 파티클 보드의 품질기준을 만족시켰다. 왕겨 및 숯의 첨가율별로 제조된 혼합보드의 박리강도는 왕겨의 첨가율이 감소하고 숯의 첨가율이 증가할수록 박리강도가 완만하게 감소하는 경향을 나타냈다. 또한 KSF 3104 파티클 보드의 품질기준 왕겨와 숯의 비율이 35:5와 30:10일 때는 15.0형, 25:15와 20:20일 때 13.0형의 품질기준을 만족시켰다. 혼합보드의 밀도가 증가할수록 경도가 증가하는 경향을 나타냈고, 왕겨의 첨가율이 감소하고 숯의 첨가율이 증가할수록 경도는 감소하는 경향을 나타냈다.

Keywords

References

  1. Chio, Y.S., Kwon. G.J., Hwang, W.J., Han, T.H., Kwon, J.H., Kim, N.H. 2000. New Utilization of Boards Manufactured with Wastewood and Charcoal. Journal of the Korean Society of Furniture Design and Technology 11(2): 67-72.
  2. Hwang, J.W., Oh, S.W. 2017. Physical and mechanical properties of board made from carbonized rice husk. Journal of the Korean Wood Science and Technology 45(1): 62-71. https://doi.org/10.5658/WOOD.2017.45.1.62
  3. Kang, C.W., Kim, N.H., Kim, B.R., Kim, Y.S., Byeon, H.S., So, W.T., Yeo, H.M., Oh, S.W., Lee, W.H., Lee, H.H. 2008. New wood Physics and mechanics. hyangmunsa. 297-299.
  4. Kim, I.B., Kim, Y.G. 2001. Recycling evaluation of rice-hull and sawdust using carborization. Journal of korean Society of environmental Administration 7(3): 439-443.
  5. KS F 3104. 2006. Particleboard. Korean Standards Association.
  6. Kim, G.C. 2017. A study on the strength properties of board using the carbonized rice husks to develop a structural insulation. Journal of the Korean Wood Science and Technology 45(5): 511-518. https://doi.org/10.5658/WOOD.2017.45.5.511
  7. Lee, H.H., Cho, Y.M., Park, H.S. 2004. Effect of overlaid white charcoal board on the ethylene gas adsorption and preservation life of strawberry. Journal of the Korean Wood Science and Technology 32(5): 86-92.
  8. Lee, H.H., Cho, Y.M., Park, H.S. 2005. Manugacture and preperties of white charcoal board in relation with final mat moisture content and charcoal particle size. Journal of the Korean Wood Science and Technology 33(3): 22-29.
  9. Lee, H.H., Seo, I.S., Park, H.S. 2006. The scavenging effect of formaldehyde release made from charcoal of waste wood. Proceedings of the Korean Society of Wood Science and Technology annual meeting. pp. 208-209.
  10. Lee, P.W., Yoon, H.U. 1994. The properties of sawdust board in using MDI (Methylene diphenyldiisocyanate) resin(I) - On the specific gravity, resin additive content and mat moisture content -. Journal of the Korea Furniture Socieety 5: 51-61.
  11. Oh, S.W. 2003. Physical and mechanical properties of sawdust board made of thinning logs(II)-The effect of density and additive quentity of powder phenolic resin. Journal of the Korean Wood Science and Technology 31(3): 17-23.
  12. Oh, S.W. 2013. Manufacturing and physical properties of composite board with sawdust and orange peels. Journal of the Korean Wood Science and Technology 41(6): 528-534. https://doi.org/10.5658/WOOD.2013.41.6.528
  13. Oh, S.W. 2014. Prooerties of sawdust-rice husk mixed ceramic according to the rice husk mixing ratios. Journal of the Korean Wood Science and Technology 42(4): 420-427. https://doi.org/10.5658/WOOD.2014.42.4.420
  14. Oh, S.W., Park, H.J. 2010. A change in surface temperature of ceramics made from board mixed with sawdust and rice husk -Effect of resin impregnation rate and carbonization temperature-. Journal of the Korean Wood Science and Technology 38(1): 43-48. https://doi.org/10.5658/WOOD.2010.38.1.43
  15. Oh, S.W., Park, H.J., Hwang, J.W. 2012. Charactistics of board made from miscanthus sinensis var. purpuracsens particles. Journal of Agriculture & Life Science 46(2): 43-48
  16. Oh, S.W., Park, S.C. 2009. Properties of boards prepared from woody of Broussonetia Kazinoki Sieb. Journal of the Korean Wood Science and Technology 37(3): 216-221.
  17. Oh, S.W., Piao, J.J., Jeong, I.S. 2005. Properties of ceramics from a board mixed with sawdust and rice husk -Effect of resin impregnation rate and carbonization temperature-. Journal of the Korean Wood Science and Technology 33(3): 30-37.
  18. Park, H.M., Lee, S.K., Seok, J.H., Choi, N.K., Kwon, C.B., Heo, H.S., Byeon, H.S., Yang, J.K., Kim, J.C. 2012. Effect of green tea and sawdust contents on dynamic modulus of elasticity of hybrid boards and prediction of static bending strength performances. Journal of agriculture & life science 46(2): 9-17
  19. Park, H.M., Heo, H.S., Sung, E.J., Nam, K.H., Lim, J.S. 2013. Effect of the kind and content of raw materials on mechanical performances of hybrid composite boards composed of green tea, charcoals and wood fiber. Journal of the Korean Wood Science and Technology 41(1): 64-76. https://doi.org/10.5658/WOOD.2013.41.1.64
  20. Park, S.B., Lee, S.M., Park, J.Y., Kang, E.C. 2007. Properties and formaldehyde emission of particleboard fabricated with waste wood charcoal. Journal of the Korean Society of Furniture Design and Technology 18(3): 205-210.
  21. Piao, J.J. 2004. Physical and mechanical properties of ceramics from a board mixed with sawdust and rice husk. chonbuk national university master's thesis
  22. Seo, I.S., Lee, H.H. 2010. Properties of Black Charcoal Board Manufactured from Domestic Wood Waste by Using Serum Protein Adhesive. Journal of agricultural science 37(2): 267-270.
  23. Sun, B.C.H., Hawke, R.N., Gale, M.R. 1994. Effect of polyisocyanate level on physical properties of wood fiber composite materials. Forest Products Journal 44(4): 53-58.