Evaluation of Adhesion Strength of Coatings and Face Layers Properties of Foam Core Lightweight Panels

Document Type : Original Article


1 Wood Science and Technology Department, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran

2 Wood and Civil Engineering Department, Bern University of Applied Science, Biel, Switzerland


The aim of this study was the evaluation of adhesion strength of surface coatings in lightweight foam core panels. Lightweight foam core panels were manufactured with 3, 4, and 5 mm face layers thicknesses and two press temperature of 130 °C and 160 °C. Face layers properties and also adhesion strength of acrylic and polyurethane coating on lightweight panels was investigated. The results showed that the surface soundness, surface roughness, and surface wettability were significantly increased in panels produced by 130 °C whilst the face layers thicknesses increased from 3 to 5 mm. Conversely, the surface soundness, surface roughness, and surface wettability were significantly decreased in panels produced by 160 °C whilst the face layers thicknesses increased from 3 to 5 mm. The results also showed that the adhesion strength of polyurethane coating was drastically higher than that of water-based acrylic coating. The highest adhesion strength was obtained in panels manufactured with press temperature of 130°C, face layers thickness of 5 mm and polyurethane coating.


Main Subjects

  1. Ü. Büyüksarı, Surface characteristics and hardness of MDF panels laminated with thermally compressed veneer. Composites Part B. 44(2013), 675-678.
  2. A. Falahatnezhad, H. R. Mansouri, F. Heydari, Investigation of characteristics of green particleboard made with natural adhesive corn flour/soybean meal flour. J. For. Wood Prod. 71(2018), 61-70.
  3. T. Dilik, S. Erdinler, E. Hazır, H. Koç, S. Hiziroglu, Adhesion strength of wood based composites coated with cellulosic and polyurethane paints. Adv. Mater. Sci. Eng. (2015), 1-5.
  4. N. Ayrilmis, Z. Candan, T. Akbulut, O. Balkiz, Effect of sanding on surface properties of medium density fiberboard.  Drvna industrija: Znanstveni časopis za pitanja drvne tehnologije. 61(2010), 175-181.
  5. M. Akgül, S. Korkut, O. Çamlibel, Z. Candan, T. Akbulut, Wettability and surface roughness characteristics of medium density fiberboard panels from rhododendron (Rhododendron ponticum) biomass. Maderas. Cienc. Tecnol. 14(2012), 185-193.
  6. P. H. G. de Cademartori, A. R. de Carvalho, P. R. D. Marangoni, M. A. C. Berton, P. Blanchet, G. I. B. de Muniz, W. L. E. Magalhães, Adhesion performance and film formation of acrylic emulsion coating on medium density fiberboard treated with Ar plasma. Int. Adhes. Adhes. 70(2016), 322-328.
  7. N. Ayrilmis, J. T. Benthien, H. Thoemen, Effects of formulation variables on surface properties of wood plastic composites. Composites part B. 43(2012), 325-331.
  8. S. C. Moldoveanu, V. David,. Selection of the HPLC method in chemical analysis. Elsevier. (2016).
  9. G. Nemli, I. Ozturk, I. Aydin, Some of the parameters influencing surface roughness of particleboard. Build. Environ. 40(2005), 1337-1340.
  10. G. Nemli, I. Aydin, E. Zekoviç, Evaluation of some of the properties of particleboard as function of manufacturing parameters. Mater Des, 28(2007),1169–76.
  11.  م. غفرانی، س. خجسته خسرو، اثر کیفیت پرداخت سطح چوب بر مقاومت چسبندگی در شفاف پوشه‌ها. نشریه علمی علوم و فناوری رنگ. (1392)4، 345-339.
  12. A. Miszczyk, T. Schauer, Electrochemical approach to evaluate the interlayer adhesion of organic coatings. Prog. Org. Coat. 52(2005), 298-305.
  13. P. Bekhta, T. Krystofiak, S. Proszyk, B. Lis, Adhesion strength of thermally compressed and varnished wood (TCW) substrate. Prog. Org. Coat. 125(2018), 331-338.
  14. E. S. Erdinler, K. H. Koc, T.Dilik, E. Hazir, Layer thickness performances of coatings on MDF: Polyurethane and cellulosic paints. Maderas. Cienc. Tecnol. 21(2019).
  15. H. R. Taghiyari, A. Samadarpour, Effects of nanosilver-impregnation and heat treatment on coating pull-off adhesion strength on solid wood. Wood Industry/Drvna Industrija, 66(2015), 321–327.
  16. T.Ozdemir, S.Hiziroglu, A. Malkocoglu, Influence of relative humidity on surface quality and adhesion strength of coated medium density fiberboard (MDF) panels. Mater. Design. 30(2009), 2543-2546.
  17. S.Danu, D. Darsono, Electron beam curing of epoxy acrylate coatings on medium-density fiberboard. Indonesian J. Chem. 8(2008), 207-214.
  18. A. Shalbafan, J. Welling, J. Luedtke, Effect of processing parameters on mechanical properties of lightweight foam core sandwich panels. Wood Mater. Sci. Eng. 7(2012), 69-75.
  19. BS EN 311, Wood-based panels. Surface soundness. Test method. European Standardization Committee, Brussels; (2002).
  20. J. G. Boon, R. Hashim, O. Sulaiman, T. Sugimoto, M. Sato, N. Salim, M. S. Fatimah, Importance of lignin on the properties of binderless particleboard made from oil palm trunk. ARPN J. Eng. Appl. Sci. 12(2006), 33–40.
  21. S., Saadati, H. R, Mansouri, B. Nosrati, Manufacturing of adhesive free wood-based panels by using sanding dust. J. For. Wood Products. 70(2017), 325-331. (in Persian)
  22. Z. W. Zhong, S.Hiziroglu, C. T. M. Chan, Measurement of the surface roughness of wood based materials used in furniture manufacture. Meas. 46(2013), 1482-1487.
  23. T. Tabarsa, A. Ashori, M. Gholamzadeh, Evaluation of surface roughness and mechanical properties of particleboard panels made from bagasse. Composites Part B. 42(2011), 1330-1335.
  24. A. Jahan Latibari, Science and technology of adhesion for lignocellulosic substances, Islamic Azad university, Karaj. (2007).
  25. E. Csanády, E. Magoss, L. Tolvaj, Quality of machined wood surfaces, Springer. (2015).
  26. A. Pizzi, K. L. Mittal, Wood adhesives. CRC Press, (2011).
  27. K. Yaghoobi, Influence of hydrothermal treatment on physical, mechanical and acoustic properties of mulberry (Morus alba L.) Wood. Master's thesis, Noshahr and Chalous Islamic Azad University (2007). 
  28. G. Mirzaei, B. Mohebby, M.Tasooji, The effect of hydrothermal treatment on bond shear strength of beech wood. European J. Wood Wood Prod. 70(2012a), 705-709.
  29. J. J. Weiland, R. Guyonnet, Study of chemical modification and fungi degradation of thermally modified wood using DRIFT spectroscopy. Holz  als Roh- und Werkstoff. 61(2003), 216-220.
  30. M. J. Boonstra, B. Tjeerdsma, Chemical analysis of heat treated softwoods. Holz als Roh-und Werkstoff. 64(2006), 204-211.
  31. Gh. Mirzaei1, B. Mohebby, T. Tabarsa, Collapsibility and wettability of hydrothermally treated wood. Iranian J. Wood Paper Industries. 3(2012b), 1-11.
  32. M. Ghofrani, E. Samadi, S. khojasteh khosro, Heat treatment of wood and the investigation of its effect on surface wettability and adhesion strength of coating. Iranian J. Wood Paper Sci. Res. 31(2016), 362-373. (in Persian)
  33. W. Chelak, WH. Newman, MDI high moisture content bonding mechanism, parameters, and benefits using MDI in composite wood products. Proc. the. Washingt. State Univ. Int. Part. Mater. Ser. Symp. 1991.
  34. K. Choupani, A. Shalbafan, J. Welling, Effect of ingredient ratios of rigid polyurethane foam on foam core panels properties. J. Appl. Polym. Sci. 134(2017), 44722-44729.