Performance of Wood Flooring UV Coatings Interfacial Modified by Nano-Silica

Abstract:

Cork flooring maintains the natural qualities of cork, showing the unique and elegant natural patterns, and also has series of advantages such as thermal insulation, sound insulation, moisture barrier, insulation, and no static. Ultraviolet (UV) curable coatings have no volatile organic compounds, little environmental pollution, fast curing, and are suitable for high speed automated production, which is the development of environmentally friendly wood floor coatings. In this paper, the UV-curable wooden coatings for floor were interfacially modified with nanosilica. The process parameters were optimized by orthogonal experiments, and the overall performance of wood flooring UV coating was obtained. The mechanical properties of the coating (hardness, adhesion and impact strength), resistance to liquid properties (resistance to aqueous sodium chloride solution, resistance to aqueous sodium hydroxide solution, resistance to alcohol, resistance to blue and black ink, resistance to sauce) and gloss were tested. It was found that wood flooring UV coating had good performance, hardness reached 3H, adhesion reached one grade, impact strength was 40 kgcm, and fluid-resistant performance (120 h) of coating reached one grade when the nanosilica content was 0.50%~0.70%, the drying time was 2 min, and medium pressure mercury UV lamp was 3. The gloss results showed that gloss of wood flooring UV coatings decreased with the increase of nanosilica content. When the nanosilica content was 0.50%~0.70%, the gloss value was in the vicinity of 35%, showing a matte gloss. This study provides new perspectives in wood flooring UV coating for industrial applications.

• Periodical: Key Engineering Materials (Volumes 609-610)
• Pages: 118-123
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.609-610.118
• Online since: April 2014
• Authors: Xiao Xing Yan*, Guo Yue Xu, Yan Wu, Zhi Hui Wu
• Keywords: Coating, Flooring, Nanosilica, UV

References

[1] S. Sabani, A.H. Onen, A. Gungor, Preparation of hyperbranched polyester polyol-based urethane acrylates and applications on UV-curable wood coatings, J. Coat. Technol. Res. 9 (2012) 703-716.

DOI: 10.1007/s11998-012-9418-6

[2] C.E. Corcione, M. Frigione, UV-cured polymer-boehmite nanocomposite as protective coating for wood elements, Prog. Org. Coat. 74 (2012) 781-787.

DOI: 10.1016/j.porgcoat.2011.06.024

[3] J.L. Peng, Z.G. Liu, X.P. Luo, et al, Preparation of low odor UV-curable woodenware coatings, China Coat. 27 (2012) 46-48.

[4] J.P. Zheng, J. Zhang, Influencing factors of film gloss stability of semi-gloss PU varnish, China Coat. 23 (2008) 23-25.

[5] V. Jancovicova, M. Mikula, B. Havlinova, et al, Influence of UV-curing conditions on polymerization kinetics and gloss of urethane acrylate coatings, Prog. Org. Coat. 76 (2013) 432-438.

DOI: 10.1016/j.porgcoat.2012.10.010

[6] M.A.G. Bardi, L.D.B. Machado, Accompanying of parameters of color, gloss and hardness on polymeric films coated with pigmented inks cured by different radiation doses of ultraviolet light, Radiat. Phys. Chem. 81 (2012) 1332-1335.

DOI: 10.1016/j.radphyschem.2011.11.068

[7] V. Landrya, B. Riedl, P. Blanchet, Nanoclay dispersion effects on UV coatings curing, Prog. Org. Coat. 62 (2008) 400-408.

DOI: 10.1016/j.porgcoat.2008.02.010

[8] S.M. Mirabedini, M. Mohseni, S. PazokiFard, et al, Effect of TiO2 on the mechanical and adhesion properties of RTV silicone elastomer coatings, Colloid. Surface A, 317 (2008) 80-86.

DOI: 10.1016/j.colsurfa.2007.09.044

[9] F.C. Zhang, J.J. Yang, Q.Y. Wu, et al, Synthesis and characterization of alcohol-soluble polyurethane modified by castor oil and nano-SiO2, Fine Chem. 29 (2012) 1021-1025.

[10] P.W. Shum, Z.F. Zhou, K.Y. Li, et al, Mechanical and tribological properties of amorphous carbon films deposited on implanted steel substrates, Thin Solid Films 458 (2004) 203-211.

DOI: 10.1016/j.tsf.2003.12.073