Some surface characterıstıcs of orıental beech wood ımpregnated wıth some fıre-retardants and coated wıth polyurea/polyurethane hybrıd and epoxy resıns


  • Çağlar Altay
  • Hilmi Toker
  • Ergün Baysal
  • İlknur Babahan



Epoxy coating, fire retardants, oriental beech, polyurea coating, polyurethane coating, surface characteristics


This study was made to determine surface characteristics such as colour, gloss, and surface hardness changes of Oriental beech (Fagus orientalis). The wood specimens were firstly impregnated with some fire-retardants (FRs) and primed with epoxy resin (EPR) and then coated with polyurethane/polyurea hybrid resin (PUU). Oriental beech was impregnated with 3 % aqueous solution of boric acid (BA), borax (BX), boric acid and borax mixture (1:1), and ammonium sulphate (AS). While Sikafloor®-156 was used for epoxy coating (EPR), Sikalastic®-851 R was used for polyurethane/polyurea hybrid coating (PUU). According to our results, all treatment groups gave negative lightness stability values after accelerated weathering. The colour stability of epoxy resin coated Oriental beech was higher than that of polyurethane/polyurea hybrid resin coated Oriental beech. Except for boric acid impregnated and polyurethane/polyurea hybrid resin coated Oriental beech, all fire-retardants treatment before polyurethane/polyurea hybrid resin and epoxy resin coatings decreased the gloss losses of Oriental beech after accelerated weathering. Fire-retardants impregnation before epoxy resin and polyurethane/polyurea hybrid resin coatings improved the surface hardness values of Oriental beech after accelerated weathering.


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Anderson, E.L.; Pawlak, Z.; Owen, N.L.; Feist, W.C. 1991. Infrared studies of wood weathering. Part I: Softwoods. Appl Spectrosc 45(4): 641- 647.

Aslan, S.; Özkaya, K. 2009. Investigation of combustion resistance of wood-based panels treated with different chemicals. Turk J For 2: 122–140.

American Society for Testing and Materials. 1964. ASTM D1536-58: Tentative method of test color difference using the color master differential colorimeter. Replaced by D2244 ASTM. West Conshohocken, PA, USA.

American Society for Testing and Materials. 2018. ASTM D523-14: Standard test method for specular gloss. ASTM. West Conshohocken, PA, USA.

American Society for Testing and Materials. 2014. ASTM D4366-14: Standard test methods for hardness of organic coatings by pendulum damping tests. ASTM. West Conshohocken, PA, USA.

American Society for Testing and Materials. 2016. ASTM G154-06: Standard practice for operating fluorescent light apparatus for UV exposure of nonmetallic materials. ASTM. West Conshohocken, PA, USA.

American Society for Testing and Materials. 2007. ASTMD 1413-07e1: Standard test method for wood preservatives by laboratory soil-block cultures (Withdrawn 2016). ASTM. West Conshohocken, PA, USA.

Abed, M.S.; Ahmed, P.S.; Oleiwi, J.K.; Fadhil, B.M. 2020. Low velocity impact of Kevlar and ultra high molecular weight polyethylene (UHMWPE) reinforced epoxy composites. Model Mater Struct 16(6): 1617-1630.

Attard, T.L; He, L.; Zhou, H. 2019. Improving damping property of carbon-fiber reinforced epoxy composite, through novel hybrid epoxy-polyurea interfacial reaction. Comp Part B 164: 720-731.

Babahan, I.; Zheng, Y.; Soucek, M.D. 2020. New bio based glycidal epoxides. Prog Org Coat 142: 105580.

Baysal, E. 2012. Surface characteristics of CCA treated Scots pine after accelerated weathering. Wood Res 57(3): 375-382.

Baysal, E. 2008. Some physical properties of varnish coated wood preimpregnated with copperchromated boron (CCB) after 3 months of weathering exposure in Southern Eagen Sea region. Wood Res 53(1): 43-54.

Budakçı, M. 2006. Effect of outdoor exposure and bleaching on surface color and chemical structure of Scots pine. Prog Org Coat 56(1): 46-52.

Bodirlau, R.; Teaca, C.A.; Rosu, D.; Rosu, L.; Varganici, C.D.; Coroaba, A. 2013. Physico-chemical properties investigation of softwood surface after treatment with organic anhydride. Cent Eur J Chem 11: 2098–2106.

Catto, A.L.; Montagna, L.S.; Almeida, S.H.; Silveira, RM.; Santana, R.M. 2016. Wood plastic composites weathering: effects of compatibilization on biodegradation in soil and fungal decay. Int Biodeter Biodegr 109: 11–22.

Chern, Y.C.; Tseng, S.M.; Hsieh, K.H. 1999. Damping properties of interpenetrating polymer networks of polyurethane‐modified epoxy and polyurethanes. J Appl Polym Sci 74(2): 328-335.<328::AID-APP14>3.0.CO;2-W.

Chattopadhyay, D.K.; Raju, K.V.S.N. 2007. Structural engineering of polyurethane coatings for high performance applications. Prog Polym Sci 32(3): 352-418.

Cogulet, A,; Blanchet, P.; Landry, V. 2018. The multifactorial aspect of wood weathering: a review based on a holistic approach of wood degradation protected by clear coating. BioResources 13: 2116–2138.

Çakıcıer, N.; Korkut, S.; Korkut, D. S.; Kurtoğlu, A.; Sönmez, A. 2011. Effects of QUV accelerated aging on surface hardness, surface roughness, glossiness, and color difference for some wood species. Int J Phys Sci 6(8): 1929-1939.

Evans, P.D.; Michell, A.J.; Schmalzl, K.J. 1992. Studies of the degradation and protection of wood surfaces. Wood Sci Technol 26: 151-163.

Evans, P.D.; Thay, P.D.; Schmalz, K.J. 1996. Degradation of wood surfaces during natural weathering. Effects on lignin and cellulose and on the adhesion of acrylic latex primers. Wood Sci Technol 30: 411–422. .

González-Laredo, F.R.; Rosales-Castro, M.; Rocha-Guzmán, N.E.; Gallegos-Infante, J.A.; MorenoJiménez, M.R.; Karchesy, J.J. 2015. Wood preservation using natural products. Madera Bosques 21: 63–76.

Gündüz, A.; Baysal, E.; Türkoğlu, T.; Küçüktüvek, M.; Altay, Ç.; Peker, H.; Toker, H. 2019. Accelerated weatherıng performance of Scots Pine preimpregnated with copper based chemicals before varnish coating. Part II: coated with water based varnish. Wood Res 64(6): 987-998.

Gündüz, A.; Baysal, E.; Türkoğlu, T.; Altay, Ç.; Küçüktüvek, M.; Toker, H.; Peker, H. 2020. Accelerated weathering performance of scots pine preimpregnated with copper-based chemials before varnish coating. Part I: coated with cellulosic and polyurethane varnish. Color Tech 136(1): 34-44.

Grelier, S.; Castellan, A.; Kamdem, D.P. 2000. Photo-protection of copper amine treated pine. Wood Fiber Sci 32(2): 196-202.

Hon, D.N.S.; Chang, S.T. 1985. Photoprotection of wood surfaces by wood-ion complexes. Wood Fiber Sci 17(1) : 92-100.

Keskin, H.; Atar, M.; Korkut, S.; Korkut, D.S. 2011. Impact of impregnation with Imersol Aqua on the surface adhesion strength of synthetic, acrylic, polyurethane, and water-based varnishes. Pigment Resin Technol 40: 154-160.

Leary, G.J. 1968. Photochemical production of quinoid structures in wood. Nature 217: 672–673.

Meijer, M. 2001. Review on the durability of exterior wood coatings with reduced VOC-content. Prog Org Coat 43(4): 217-225.

Olsson, S.K.; Johansson, M.; Westin, M.; Östmark, E. 2014. Reactive UVabsorber and epoxy functionalized soybean oil for enhanced UV protection of clear coated wood. Polym Degrad Stab 110: 405–414.

Peker, H. 1997. Mobilya üst yüzeylerinde kullanılan verniklere emprenye maddelerinin etkileri. Phd. Thesis, Karadeniz Technical University, Forest Industry Engineering Department, Trabzon, Turkey. (In Turkish).

Petric, M.; Kricej, B.; Humar, M.; Pavlic, M.; Tomazic, M. 2004. Patination of cherry wood and spruce wood with ethanolamine and surface finishes. Surf Coat Int 87: 195-201.

Rosu, D.; Mustata, F.; Tudorachi, N.; Varganici, C.D.; Rosu, L.; Musteata, V.E. 2016. A study on coating properties of an epoxy system hardened with maleinized castor oil. Prog Org Coat 99: 480–489. oat.2016.07.009.

Sivrikaya, H.; Hafızoglu, H.; Yasav, A.; Aydemir, D. 2011. Natural weathering of oak (Quercus petraea) and chestnut (Castanea sativa) coated with various finishes. Color Res Appl 36(1): 72-78.

Söğütlü, C.; Döngel, N. 2009. The effect of the impregnate process of wooden material to color changes and surface roughness. Politeknik Dergisi 12(3): 179–184.

Şimşek, H.; Baysal, E. 2012. An investigation on colour and gloss changes of wood impregnated with borates. Wood Res 57(2): 271-277.

Türkoğlu, T.; Baysal, E.; Toker, H. 2015. The effects of natural weathering on color stability of impregnated and varnished wood materials. Adv Mater Sci Eng 2015: 526570.

Üstün, S.; Baysal, E.; Türkoğlu, T.; Toker, H.; Saçlı, C.; Peker, H. 2016. Surface characteristics of Scots pine treated with chemicals containing some copper compounds after weathering. Wood Res 61(6): 903-914.

Özgenç, O.; Yıldız, Ü.C.; Yıldız, S. 2013. The wood surface protection with some new generation wood preservatives and coating processings against weathering conditions. ACU J 14: 203-215 .

Varganici, C.D.; Rosu, L.; Rosu, D.; Mustata, F.; Rusu, T. 2021. Sustainable wood coatings made of epoxidized vegetable oils for ultraviolet protection. Environ Chem Lett 19: 307-328.

Wagner, W.W.W.G. 2015. Two-component hybrid coating for roofs. IST Inter Surfa Tech 8:10-11.

Yalınkılıç, M.K.; İlhan, R.; Imamura, Y.; Takahashi, M.; Demirci, Z.; Yalınkılıç, A.C. 1999. Weathering durability of CCB-impregnated wood for clear varnish coatings. J Wood Sci 45: 502–514.

Zhang, X. 2003. Photo-resistance of alkyl ammonium compound treated wood. M.S.c. Thesis, The University of British Columbia, Vancouver, Canada.




How to Cite

Altay, Çağlar ., Toker, H. ., Baysal, E. ., & Babahan, İlknur . (2021). Some surface characterıstıcs of orıental beech wood ımpregnated wıth some fıre-retardants and coated wıth polyurea/polyurethane hybrıd and epoxy resıns. Maderas-Cienc Tecnol, 24, 1–12.




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