Influence of silicone oil thermal modification on mechanical properties of masson pine wood


  • Kufre Edet Okon
  • Queen Aguma
  • Ebenezer Adeyemi Iyiola
  • Idiana-Abasi Kufre Okon



Hardness, masson pine, mechanical properties, silicone oil, thermal modification


In this study, the effect of silicone oil thermal modification at different treatment temperatures (150 ºC, 180 ºC and 210 ºC for 2 h and 4 h.) on the mechanical properties of masson pine (Pinus massoniana L.) wood was investigated. The density, modulus of elasticity (MOE), modulus of rupture (MOR), impact bending, compressive strength, and hardness of silicone oil thermal treated samples were evaluated and compared with those of untreated samples. Results showed the mechanical properties of masson pine wood reduces after silicone oil thermal modification. The higher the modification temperature, the lower the mechanical properties of Mason pine wood. At 210 ºC for 4 h, mechanical properties of the modified samples were two times lower than the mechanical properties of the untreated. Higher modification temperature and longer treatment time contributed to lower mechanical properties.


Download data is not yet available.


Barca, F.; Caporossi, T.; Rizzo, S. 2014. Silicone oil: different physical proprieties and clinical applications. BioMed Res Int Article ID: 502143.

Bal, B.C.; Bektaş, İ. 2013. The effects of heat treatment on some mechanical properties of juvenile wood and mature wood of Eucalyptus grandis. Dry Technol 31(4): 479-485.

Bekhta, P.; Niemz, P. 2003. Effect of high temperature on the change in color, dimensional stability and mechanical properties of spruce wood. Holzforschung 57(5): 539-546.

Boonstra, M.J.; Van acker, J.; Tjeerdsma, B.F.; Kegel, E.V. 2007. Strength properties of thermally modified softwoods and its relation to polymeric structural wood constituents. Ann For Sci 64(7): 679-690.

Boonstra, M. 2008. A two-stage thermal modification of wood, Université Henri Poincaré-Nancy 1, Nancy, Belgium.

Budakçi, M.; Pelit, H.; Sönmez, A.; Korkmaz, M. 2016. The effects of densification and heat post-treatment on hardness and morphological properties of wood materials. BioResources 11(3):7822-7838.

Dubey, M.K. 2010. Improvements in stability, durability and mechanical properties of radiata pine wood after heat-treatment in a vegetable oil. University of Canterbury, Christchuech, New Zealand.

Esteves, B.; Graca, J.; Pereira, H. 2008. Extractive composition and summative chemical analysis of thermally treated eucalypt wood. Holzforschung 62(3): 344-351.

Esteves, B.; Pereira, H. 2009. Wood modification by heat treatment: A review. BioResources, 4(1): 370-404.

GB/T. 2009. 1936.1: Method of testing in bending strength of wood. Chinese National Standard, People’s Republic of China.

GB/T. 2009. 1936.2: Method for determination of the modulus of elasticity in static. Chinese National Standard, People’s Republic of China.

GB/T. 2009. 1935: Method of testing in compressive strength parallel to grain of wood. Chinese National Standard, People’s Republic of China.

GB/T. 2009. 1940: Method of testing in toughness of wood. Chinese National Standard, People’s Republic of China.

GB/T. 2009. 1941: Method of testing in hardness of wood. Chinese National Standard. Chinese National Standard, People’s Republic of China.

Giebeler, E. 1983. Dimensionsstabilisierung von Holz durch eine Feuchte/Wärme/Druck Behandlung. Holz Roh Werkst 41(3): 87-94.

Gunstone, F.D. 2011. Vegetable Oils in Food Technology: Composition, Properties and Uses. John Wiley.

Hofmann, T.; Wetzig, M.; Rétfalvi, T.; Sieverts, T.; Bergemann, H.; Niemz, P. 2013. Heat-treatment with the vacuum-press dewatering method: chemical properties of the manufactured wood and the condensation water. Eur J Wood Prod 71(1): 121-127.

Kocaefe, D.; Poncsak, S.; Boluk, Y. 2008. Effect of thermal treatment on the chemical composition and mechanical properties of birch and aspen. BioResources 3(2): 517-537.

Kollmann, F. 1951. Technologie des Holzes und der Holzwerkstoffe - Teil 2. Berlin: Springer Verlag (in German). /book/10.1007%2F978-3-642-52947-4

Korkut, S.; Kök, M.S.; Korkut, D.S.; Gürleyen, T. 2008. The effects of heat treatment on technological properties in Red-bud maple (Acer trautvetteri Medw.) wood. Bioresour Technol 99(6): 1538-1543.

Korkut, S.; Aytin, A. 2015. Evaluation of physical and mechanical properties of wild cherry wood heat-treated using the thermowood process. Maderas-Cienc Tecnol 17(1): 171-178.

Lahtela, V.; Kärki, T. 2016. Effects of impregnation and heat treatment on the physical and mechanical properties of Scots pine (Pinus sylvestris) wood. Wood Mater Sci Eng 11(4): 217 227.

Militz, H. 2002. Thermal treatment of wood: European processes and their background. IRG/WP 02-40241. vol 4: 1–17.

Navi, P.; Sandberg, D. 2012. Thermo-hydro-mechanical wood processing. EPFL press. New York, United States. 280 pages.

Okon, K.E.; Lin, F.; Chen, Y.; Huang, B. 2017. Effect of silicone oil heat treatment on the chemical composition, cellulose crystalline structure and contact angle of Chinese parasol wood. Carbohydr Polym 164:179-185.

Okon, K.E.; Lin, F.; Lin, X.; Chen, C.; Chen, Y.; Huang, B. 2018. Modification of Chinese fir (Cunninghamia lanceolata L.) wood by silicone oil heat treatment with micro-wave pretreatment. Eur J Wood Prod 76(1): 221-228.

Percin, O.; Altunok, M. 2017. Some physical and mechanical properties of laminated veneer lumber reinforced with carbon fiber using heat-treated beech veneer. Holz Roh Werkst 75(2): 193 201.

Pelit, H.; Budakçi, M.; Sönmez, A. 2018. Density and some mechanical properties of densified and heat post-treated Uludağ fir, linden and black poplar woods. Eur J Wood Wood Prod 76(1): 79-87.

Pelit, H.; Yorulmaz, R. 2019. Influence of Densification on Mechanical Properties of Thermally Pretreated Spruce and Poplar Wood. BioResources 14(4): 9739-9754.

R Development Core Team 2014. R: a language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria.

Scheiding, W.; Kruse, K.; Plaschkies, K.; Weiß, B. 2005. Thermally modified wood for playground toys: investigations on 13 industrially manufactured products. (PPTX presentation).

Sidorova, E. 2008. Oil heat treatment of wood. In Proceedings of the 4 meeting of the Nordic Baltic network in wood Material Science and Engineering (WSE), November 13-14, 2008, Latvian State Institute of Wood Chemistry Riga, Latvia.

Sundqvist, B.; Karlsson, O.; Westermark, U. 2006. Determination of formic-acid and acetic acid concentrations formed during hydrothermal treatment of birch wood and its relation to colour, strength and hardness. Wood Sci Technol 40(7): 549–561.

Tomak, E. D.; Viitanen, H.; Yildiz, U.C.; Hughes, M. 2011. The combined effects of boron and oil heat treatment on the properties of beech and Scots pine wood. Part 2: Water absorption, compression strength, color changes, and decay resistance. J Mater Sci 46(3): 608-615.

Vernois, M. 2001. Heat treatment of wood in France - state of art. In Proceedings of special seminar review on heat treatment of wood, Antibes, France.

Welbacher, C.R.; Brischke, C.; Rapp, O.A. 2007. Influence of treatment temperature and duration on selected biological, mechanical, physical and optical properties of thermally modified timber. Wood Mater Sci Eng 2: 66–76.

Yildiz, S.; Gezer, E.D.; Yidiz, Ü.C. 2006. Mechanical and chemical behavior of spruce wood modified by heat. Build Environ 41(12): 1762–1766.

Zhao, H.; Lu, K.P.; Lin, J.G. 2015. Efect on properties of Phyllostachys heterocycla Cv Pubescens by heat treatment with oil medium. For Machin Wood Equip 346: 14–16.




How to Cite

Edet Okon, K. ., Aguma, Q. ., Adeyemi Iyiola, E. ., & Kufre Okon, I.-A. . (2021). Influence of silicone oil thermal modification on mechanical properties of masson pine wood. Maderas-Cienc Tecnol, 23, 1–8.