An Investigation into the Effect of Moisture Content on Adhesion strength of Half-polyester and Polyurethane Clear Paints Applied to Wood Surface

Fazeli, Anooshe; Ghofrani, Mohammad; Hassani Khorshidi, Fatemeh

doi:10.22092/ijwpr.2018.122224.1478

Document Type : Research Paper

Authors

¹ Wood Science and Technology Department, Faculty of Materials Engineering and New Technologies, Shahid Rajaee Teacher Training University, Tehran

² Professor, Wood Science and Technology Department, Faculty of Materials Engineering and New Technologies, Shahid Rajaee Teacher Training University, Tehran,

³ Corresponding author, Wood Science and Technology Department, Faculty of Materials Engineering and New Technologies, Shahid Rajaee Teacher Training University, Tehran,

https://doi.org/10.22092/ijwpr.2018.122224.1478

Abstract

The present study was conducted to inverstigate the effect of moisture content on adhesion strength of sealer half-polyester and sealer polyurethane on beech (Fagus orientalis) and hornbeam (Carpinus betulus) wood types of northern regions of Iran. PH values of beech and hornbeam was 5.51 and 5.19, respectively. Dried specimens were put in a climatization room to reach moisture contents of 7%, 11% and 15%. After the preparation stage, two layers of sealer were placed on the specimens using a spray. Next, polyurethane and half-polyester were applied to the specimens. The pull-off test was performed on the specimens according to the ASTM D 4541 Standard. The results showed that the most adhesion strength was that of the sealer polyurethane used on the beech wood type with the moisture content of 7 percent and the least adhesion strength belonged to the sealer half-polyester used on the hornbeam wood type with the moisture content of 15 percent. It was also observed that increasing moisture content caused a decrease in adhesion strength of both wood types.

Keywords

Main Subjects

Biology and Wood Protection

References

-Budakci, M., 2003. Design and Production of a New Adhesion Testing Device and Its Utilization with Testing of Wood Varnishes, Ph.D. Thesis, Department of Furniture and Decoration, Gazi University, Ankara.

-Chang, H.T. and Chang, S.T., 2003. Improvements in dimensional stability and lightfastness of wood by butyrylation using microwave heating. Journal of Wood Science, 49(5), 455-460.

-Feng, S.X., Dvorchak, M., Hudson, K.E., Renk, C., Morgan, T., Stanislawczyk, V. and Papenfuss, J., 1999. New high performance two-component wood coatings comprised of a hydroxy functional acrylic emulsion and a water-dispersible polysiocyanate. Journal of Coatings Technology, 71(899), 51-57.

-Kayagin,B.,and Akgun, E., 2008. Comparison of conventional varnishes with nanolake UV varnish with respect to hardness and adhesion durability, Int.J.Mol.Sci, 476-485.

-Keshani, S., 2006. The comparison of polyester, acid catalyzed lacquers and nitrocellulose lacquers effect on Fagus orientalis” wood and plywood furniture, M.Sc. Thesis, Faculty of Natural Resources, University of Tehran, 231p (In Persian).

-Keskin, H., Atar, M., Korkut, S. and Tekin, A., 2010. Scratch resistance of cellulosic, synthetic, polyurethane, waterborne, and acid-hardening varnishes used on woods. Industrial Crops and Products, 31(2), 219-224.

-Kudela, J. and Liptakova, E., 2006. Adhesion of coating materials to wood. Jornal of adhesion science and technology, 20(8), 875-895.

-Kureli, I., 1996. Search on application possibility of chip-Wood and fiber plates over wet surface, Ph.D. Thesis, Department of Furniture and Decoration, Gazi University, Ankara.

-Kollman, F.P., and Cote, W.F., 1984. Solid wood, principles of Wood Science and Technology, Reprint Springer – Verlag, Tokyo, 1:180.

-Latibari, A.J., 2007. Science and technology of lignocellulose materials adhesion. Islamic Azad University, Karaj Branch, Publications.

-Manavi, G.H., Ghofrani, M. and Mirshokraei, S.A., 2012. Effects of wood type, moisture content and paint type on adhesion strength of conventional clear paints used in furniture manufacture, Iranian. J. Wood Paper Sci. Res. 27, 743-753.

-Ozdemir, T. and Hiziroglu, S., 2007. Evaluation of surface quality and adhesion strength of treated solid wood, J. Mat.Processing Technol, 186, 311- 314.

-Skaar, C., 1984. Wood – Water Relationships. Chapter 3. Advances in Chemistry, Vol. 207., pp 127–172.

-Sonmez, A., Budakcı, M. and Pelit, H., 2011. The effect of moisture content of the wood on layer performance of water borne varnishes. BioResources, 6(3), 3166-3177.

-Sonmez, A., Budakci, M. and Bayram, M., 2009. Effect of wood moisture content on adhesion of varnish coatings. Scientific Research and Essays, 4(12), 1432-1437.

-Stamm, A.J. and Millett, M.A., 1940. The Internal Surface of Cellulosic Materials. Presented at the Seventeenth Colloid Symposium, held at Ann Arbor, Michigan, June 6-8, 43-45.

-Yakin, M., 2001. Effects of the resistance to adhesion, glossy and hardness at the waterborne varnishes, M.Sc. Thesis, Department of Furniture and decoration, Gazi University, Ankara.

Iranian Journal of Wood and Paper Science Research

An Investigation into the Effect of Moisture Content on Adhesion strength of Half-polyester and Polyurethane Clear Paints Applied to Wood Surface

References

References

Volume 33, Issue 4 - Serial Number 65
February 2019
Pages 511-521

An Investigation into the Effect of Moisture Content on Adhesion strength of Half-polyester and Polyurethane Clear Paints Applied to Wood Surface

References

References

Volume 33, Issue 4 - Serial Number 65February 2019Pages 511-521

Volume 33, Issue 4 - Serial Number 65
February 2019
Pages 511-521