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The effects of surface roughness on varnish adhesion strength of wood materials

Abstract

In this study, the effects of surface roughness of wood material on the adhesion strength of varnish layers have been tested. For this purpose, test samples of beech (Fagus orientalis L.), Scots pine (Pinus sylvestris L.), and cherry (Prunus cerasus) wood species were prepared and sanded with 80, 120, and 180 grit abrasives. The surface roughness values of specimens were determined using a stylus-type profilometer TIME TR 200 according to the ISO 4287 standards. Then, water-based, polyurethane, and acrylic varnish were applied to the surfaces of the samples in accordance with ASTM-D 3023. Layer adhesion strength was determined to the TS EN ISO 4624 standards. As a result, the highest adhesion strength value (2.52 N/mm2) was found in cherry, while the Scots pine had the lowest value (2.32 N/mm2). For the varnish types, polyurethane varnish types gave the highest value (3.15 N/mm2), while the lowest value was obtained from the water-based varnish. Looking at interactions between adhesion strength and surface roughness, the water-based varnish had the strongest correlation with adhesion strength (69%) and acrylic varnish also had a similar result (67%), while polyurethane varnish had the weakest result (33%) in this interaction.

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References

  1. 1.

    Forest Products Laboratory (US), Wood Handbook: Wood as an Engineering Material (No. 72). The Laboratory, (1974)

  2. 2.

    Kopač, J, Šali, S, “Wood: An Important Material in Manufacturing Technology.” J. Mater. Process. Technol., 133 (1) 134–142 (2003)

    Google Scholar 

  3. 3.

    Aydin, I, Colakoglu, G, “Effects of Surface Inactivation, High Temperature Drying and Preservative Treatment on Surface Roughness and Colour of Alder and Beech Wood.” Appl. Surface Sci., 252 (2) 430–440 (2005)

    Article  Google Scholar 

  4. 4.

    Kurtoglu A, Wood Material Finishing, Published by Forest Faculty of Istanbul University, Pub. Number: 463, Istanbul, p 4 (2000).

  5. 5.

    Söğütlü, C, “The Effect of Some Factors on Surface Roughness of Sanded Wood Material.” Gazi Univ. Techn. Educ. Fac. J. Polytech., 8 (4) 345–350 (2005)

    Google Scholar 

  6. 6.

    Fujiwara, Y, Fujii, Y, Okumura, S, “Relationship Between Roughness Parameters Based on Material Ratio Curve and Tactile Roughness for Sanded Surfaces of Two Hardwoods.” J. Wood Sci., 51 (3) 274–277 (2005)

    Article  Google Scholar 

  7. 7.

    Stumbo, DA, “Surface Texture Measurement Methods.” For. Prod. J., 13 (7) 299–304 (1963)

    Google Scholar 

  8. 8.

    Richter, K, Feist, WC, Knaebe, MT, “The Effect of Surface Roughness on the Performance of Finishes. Part 1. Roughness Characterization and Stain Performance.” For. Prod. J., 45 (78) 91 (1995)

    Google Scholar 

  9. 9.

    Taylor, JB, Carrano, AL, Lemaster, RL, “Quantification of Process Parameters in a Wood Sanding Operation.” For. Prod. J., 49 (5) 41 (1999)

    Google Scholar 

  10. 10.

    Peters, CC, Cumming, JD, “Measuring Wood Surface Smoothness: A Review.” For. Prod. J., 20 (12) 40–43 (1970)

    Google Scholar 

  11. 11.

    Fujiwara, Y, Fujii, Y, Sawada, Y, Okumura, S, “Development of a Parameter to Reflect the Roughness of a Wood Surface That Corresponds to Tactile Roughness.” Eur. J. Wood Wood Prod., 59 (5) 351–355 (2001)

    Article  Google Scholar 

  12. 12.

    Efe, H, Gurleyen, L, “Bonding Strength of Some Wood Materials Glued with Polyurethane Adhesive and Sanded with Different Sandpapers.” J. Polytech., 10 (2) 185–189 (2007)

    Google Scholar 

  13. 13.

    Sonmez, A, “Important Resistance Against to Mechanical, Physical and Chemical Effects of the Varnishes Used on the Upper Surface of Wooden Furniture.” Ph.D. Thesis, Gazi University, Institute of Science and Technology, Turkey (1989)

  14. 14.

    Sonmez, A, Budakci, M, Bayram, M, “Effect of Wood Moisture Content on Adhesion of Varnish Coatings.” Sci. Res. Essays, 4 (12) 1432–1437 (2009)

    Google Scholar 

  15. 15.

    Bayram M, “The Effect of Wood Material Moisture Content to Adhesion Strength of Varnishes,” M.Sc. Thesis, Gazi University, Institute of Science and Technology, Turkey (2004)

  16. 16.

    Ozdemir T, “Investigation of Characteristics of Some Varnish on the Some Wood Types Grown in Turkey,” Ph.D. Thesis, Karadeniz Technical University, Institute of Science and Technology, Turkey (2003)

  17. 17.

    TS 2470, Wood—Sampling Methods and General Requirements for Physical and Mechanical Tests. Turkish Standard Institute, Ankara, 1976

    Google Scholar 

  18. 18.

    TS 2471, Wood, determination of moisture content for physical and mechanical tests. Turkish Standard Institute, Ankara, 2005

    Google Scholar 

  19. 19.

    ASTM D 1667–87, Standard Methods for Conducting Machining Tests of Wood and Wood-Base Materials. ASTM Standards, ASTM International, W. Conshohocken, PA, 1999

    Google Scholar 

  20. 20.

    ASTM D 3023, Standard Practice for Determination of Resistance of Factory Applied Coatings on Wood Products to Stains and Reagents, pp. 1–3. ASTM Standards, ASTM International, W. Conshohocken, PA, 1998

    Google Scholar 

  21. 21.

    ISO 4287, Geometrical Product Specifications Surface Texture Profile Method Terms, Definitions and Surface Texture Parameters, International Organization for Standardization, 1997

  22. 22.

    TS 2495 EN ISO 3274, Geometrical Product Specifications (GPS)—Surface Texture: Profile Method—Nominal Characteristics of Contact (Stylus) Instruments.” Turkish Standard Institute, Ankara, 2005

    Google Scholar 

  23. 23.

    TS EN ISO 3274, Paints and Varnishes-Pull-Off Test for Adhesion. Turkish Standard Institute, Ankara, 2006

    Google Scholar 

  24. 24.

    Kaygın B, Strength Properties of Opaque Paint Used on Wood Surfaces, M.Sc. Thesis, Zonguldak Karaelmas University, Institute of Science and Technology, Turkey (1997)

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Correspondence to Cevdet Söğütlü.

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Söğütlü, C., Nzokou, P., Koc, I. et al. The effects of surface roughness on varnish adhesion strength of wood materials. J Coat Technol Res 13, 863–870 (2016). https://doi.org/10.1007/s11998-016-9805-5

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Keywords

  • Wood material
  • Surface roughness
  • Varnish
  • Sanding
  • Adhesion strength