Abstract
The main objective of this study was to evaluate the effect of thermal treatment of strand particles (pre-treatment) and panels (post-treatment) on the physical and mechanical properties of OSB. The experimental design consisted of five treatments, with the evaluation of the following: two particle treatment temperatures (473.15 and 513.15 K) for a period of 60 min, thermal post-treatment of the panels produced with and without application of wax emulsion at 493.15 K for a period of 12 min, and panels without heat treatment (control). For each treatment, three panels were produced with adhesives based on phenol formaldehyde. The pressing cycle of the panels was at a pressure of 3.51 MPa, 433.15 K and 8 min. Through the analysis of the results, it was possible to draw the following conclusions: the panels produced with the particles heat-treated at 513.15 K showed the best dimensional stability. The thermal post-treatment caused a significant improvement in some of the physical properties of the panels without compromising the mechanical properties. The thermal pre-treatment provided a more pronounced effect on the panel properties than the thermal post-treatment providing improved physical properties and lower mechanical properties.
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References
ASTM D-1037 (2006) Standard methods of evaluating properties of wood-base fiber and particles materials. American Society for Testing and Materials Annual book of ASTM standard. Annual Book of ASTM Standards, Philadelphia, pp 1–30
Ayrilmis N, Laufenberg TL, Winandy JE (2009) Dimensional stability and creep behavior of heat-treated exterior medium density fiberboard. Eur J Wood Prod 67:287–295
Brito JO, Garcia JN, Bortoletto G Jr, Pessoa AMC, Silva PHM (2006) The density and shrinkage behavior of Eucalyptus grandis wood submitted to different temperatures of thermoretification. Cerne Lavras 12(2):182–188
Brito JO, Silva FG, Leao MM, Almeida G (2008) Chemical composition changes in eucalyptus and pinus woods submitted to heat treatment. Bioresour Technol 99:8545–8548
Chang HT, Chang ST (2003) Improvements in dimensional stability and lightfastness of wood by butyrylation using microwave heating. J Wood Sci Tokyo 49(5):455–460
Chen Y, Choong ET, Barnes HM (1995) Effect of selected water—soluble bulking chemicals on moisture diffusion and dimensional stability of wood. Forest Prod J 45(5):84–90
CSA 0437–0 (1993) OSB and waferboard. Canadian Standards Association, Ontario, 18 p
Del Menezzi CHS (2004) Dimensional stabilization by thermal treatment and its effects on properties of oriented strand boards (OSB). Thesis (Doctorate in Forestry Engineering)—Federal University of Paraná, Curitiba, p 226
Del Menezzi CHS, Tomaselli I (2006) Contact thermal post-treatment of oriented strand board to improve dimensional stability: a preliminary study. Holz Roh Werkst 64:212–217
DIN 52362 (1982) Testing of wood chipboards bending test, determination of bending strength. DIN, Berlin p 40
Gohar P, Guyonet R (1998) Development of wood rectification process at the industrial stage. In: Proceedings of international symposium on wood preservation, 4, Cannes, pp 173–178
Goroyias GJ, Hale MDC (2002) Heat treatment of wood strands for OSB production: effect on the mechanical properties, water absorption and dimensional stability. Intern Res Group Wood Prot, Cardiff, p 1
Hill CAS, Mallon S (1999) The chemical modification of Scots pine with succinic anhydride or octenyl succinic anhydride. I. Dimensional stabilization. Holzforschung 52(4):427–433
Hsu WE, Schwald W, Shields JA (1989) Chemical and physical changes required for producing dimensionally stable wood—based composite. Part 2: heat post-treatment. Wood Sci Technol 23:281–288
Irle M (2009) Technically speaking. Wood Based Panels, June/July 2009. http://www.wbpionline.com/Technicallyspeaking. Accessed on 15 August 2009
Iwakiri S (2005) Reconstituted wood panels. FUPEF, Curitiba, p 245
Iwakiri S, Saldanha LK, Albuquerque CEC, Mendes LM (2009) Effects of particles thickness and veneer reinforced layer in the properties of oriented strand boards-0SB. Cerne Lavras 15(1):116–122
Kelly MW (1977) A critical literature review of relationships between processing parameters and physical properties of particleboards. US Forest Production Laboratory, Madison, p 66. (General Technical Report, FPL-10)
Kim G-H, Yun K-E, Kim J–J (1998) Effect of heat treatment on the decay resistance and the bending properties of radiata pine sapwood. Mater Org 32(2):101–108
Maloney TM (1993) Modern particleboard and dry-process fiberboard manufacturing, 2nd edn. M. Freeman, San Francisco, p 689
Mendes LM, Iwakari S, Matos JLM, Keinert S Jr, Saldanha LK (2003) Effects of board density and layers composition on the physical and mechanical properties of OSB manufactured from clones of Eucalyptus spp. Floresta e Ambiente Rio de Janeiro 10(1):1–17
Moslemi AA (1974) Particleboard, vol 2. Southern Illinois University Press, London
Okino EYA, Teixeira DE, del Menezzi CHS (2007) Post-thermal treatment of oriented strandboard (OSB) made from cypress (Cupressus glauca Lam.). Maderas Ciencia y Tecnología, Concepción 9(3):199–210
Paul W, Ohlmeyer M, Leithoff H, Boonstra MJ, Pizzi A (2006) Optimising the properties of OSB by a one-step heat pre-treatment process. Holz Roh Werkst 64:227–234
Paul W, Ohlmeyer M, Leithoff H (2007) Thermal modification of OSB-strands by a one step heat pre-treatment—influence of temperature on weight loss, hygroscopicity and improved fungal resistance. Holz Roh Werkst 65:57–63
Paz JJ, Sanabria EO (2000) Dimensional stabilization of Aspidosperma quebracho blancowith polyethylene glycol. In: Proceedings of IUFRO WORLD CONGRESS, 21, Kuala Lumpur, 2000, vol 3. IUFRO, Kuala lumpur, p 236
Rowell RM, Youngs RL (1981) Dimensional stabilization of wood in use. US Forest Service, Madison. (For. Prod. Lab. Rep., 0243)
Sernek M, Kamke AF, Glasser WG (2004) Comparative analysis of inactivated wood surface. Holzforschung 58:22–31
Tjeerdsma BF, Militz H (2005) Chemical changes in hydrothermal treated wood: FTIR analysis of combined hydrothermal and dry heat-treated wood. Holz Roh Werkst 63:102–111
Tjeerdsma BF, Boonstra M, Pizzi A, Tekely P, Militz H (1998) Characterization of thermally modified wood: molecular reasons for wood performance improvement. Holz Roh Werkst 56:149–153
Winandy JE, Krzysik AM (2007) Thermal degradation of wood fibers during hot-pressing of MDF composites: part I. relative effects and benefits of thermal exposure. Wood Fiber Sci 39(3):450–461
Winistorfer PM, Xu W, Helton CM (1996) Influence of three wax formulations and three application rates on thickness swell performance of southern pine flakeboards. Forest Prod J 46(3):63–67
Acknowledgments
The authors express their thanks to the Escola Superior de Agricultura Luiz de Queiroz/ESALQ-USP, for supporting the experimental work, and the funding organization of the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq).
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Mendes, R.F., Júnior, G.B., de Almeida, N.F. et al. Effect of thermal treatment on properties of OSB panels. Wood Sci Technol 47, 243–256 (2013). https://doi.org/10.1007/s00226-012-0494-7
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DOI: https://doi.org/10.1007/s00226-012-0494-7