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Full Length Research Paper
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Impacts of
impregnation with boric acid and borax on the red colour
tone of some hardwoods and varnishes
Hakan Keskin1*, Musa Atar2 and Abbas
Ketizmen3
1Gazi
University, Industrial Arts Education Faculty, Department of
Industrial Technology, 06830 Gölbasi, Ankara-Turkey.
2Gazi
University, Technical Education Faculty, Department of
Furniture and Decoration, 06500 Besevler, Ankara-Turkey.
3Gazi
University, Education Faculty, Department of Fine Arts
Education, 06500 Besevler, Ankara-Turkey.
*Corresponding author. E-mail:
khakan@gazi.edu.tr.
Tel.: +903124851124-1088, Fax: +903124853123
Accepted 15 May, 2009 |
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Abstract |
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This study was performed to determine the impacts of
impregnation with boric acid and borax on the red colour
tone of some hardwoods and varnishes. For this purpose, the
test specimens prepared from Oriental beech (Fagus
orientalis Lipsky) and European oak (Quercus petraea
Liebl.) wood which met the requirements of ASTM D
358 are impregnated with boric acid and borax according to
ASTM D 1413-99 by vacuum technique. After impregnation,
surfaces were coated by cellulosic, synthetic, polyurethane,
water-borne, acrylic and acid hardening varnishes in
accordance with ASTM D 3023 standards. The red colour tone
values were determined according to ASTM D 2244 standards
after varnishing. Depending on wood material types, the red
colour tone value was highest in Oriental beech, synthetic
and borax, whereas it was lowest in European oak,
water-borne and boric acid. According to wood material +
impregnation material + varnish interaction, the red colour
tone value was highest in Oriental beech + boric acid +
synthetic varnish, whereas it was lowest in European oak +
boric acid + polyurethane varnish. Consequently,
impregnation of wood material with boron compounds show
decreasing impact on the red colour tone.
This impact
might be taken into consideration in the applications where red
color tone values of hardwood are important.
Key words:
Red colour tone, boric acid, borax, impregnation, varnishes,
hardwoods. |
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