Varnish layer hardness of oriental beech (Fagus orientalist L.) wood as affected by impregnation and bleaching

Atar M., Keskin H., Yavuzcan H. G.

Journal of Coatings Technology and Research, vol.1, no.3, pp.219-224, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 1 Issue: 3
  • Publication Date: 2004
  • Doi Number: 10.1007/s11998-004-0015-1
  • Journal Name: Journal of Coatings Technology and Research
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.219-224
  • Keywords: hardness, bleaching, varnish, impregnation, Oriental beech, surface analysis, application methods, scratch resistance, water-based, data analysis, statistics, wood, DURABILITY
  • Gazi University Affiliated: Yes

Abstract

The impacts of impregnation and bleaching on the varnish layer hardness of Oriental beech (Fagus orientalist L.) wood were investigated. A number of bleaching combinations {[NaOH-H2O2, [NaOH-Ca(OH) 2-H2O2], [NaOH-MgSO4-H 2O2], [NaHSO3-H2C2O 4], [NaSiO3-H2O2], [KMnO4 + NaHSO3 + H2O2]} were applied at 18% concentration for bleaching to both impregnated and unimpregnated specimens of Oriental beech wood. Subsequently, water-based (WB) varnish was coated over the samples and the varnish layer hardness values were determined in accordance with ASTM D 4366-95. All of the chemicals used for bleaching reduced the surface hardness. However, after varnish coating, the hardness of most samples was similar to that of the varnish-coated natural (control) samples.