Weathering Performance of Oriental Beech impregnirane glicerolom i glioksalom
This study aimed to improve some surface properties such as color, gloss, and surface roughness changes of Oriental beech (Fagus orientalis L.) wood impregnated with some water repellent chemicals such as glycerol (GR) and glyoxal (GX) after weathering. Oriental beech wood specimens were impregnated...
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Published in | Drvna industrija Vol. 74; no. 2; p. 213 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
Sveuciliste U Zagrebu
01.06.2023
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Online Access | Get full text |
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Summary: | This study aimed to improve some surface properties such as color, gloss, and surface roughness changes of Oriental beech (Fagus orientalis L.) wood impregnated with some water repellent chemicals such as glycerol (GR) and glyoxal (GX) after weathering. Oriental beech wood specimens were impregnated with a 4 % aqueous solution of GR, GX, and a mixture of GR and GX (1:1; weight : weight) (GR+GX) and then exposed to weathering in Mugla Province in Turkey. Results showed that AL* values of all wood specimens were decreased after weathering. Moreover, the decreases in the control specimen were higher than in the impregnated wood specimens. Oriental beech wood specimens showed a greenish and yellowish tendency, giving -Aa* and +Ab* values, respectively. Total color changes of GR impregnated Oriental beech was the lowest after weathering. The gloss of all Oriental beech test specimens decreased after weathering. The control specimen gave the lowest value in all three surface roughness parameters (Ra, R, and Rq) after weathering. Among the impregnated specimens, the groups impregnated with GR had, in general, the highest value in all three roughness degrees and showed the most negative results in surface roughness. KEYWORDS: glycerol, glyoxal, oriental beech, surface properties, impregnation Cilj ovog istrazivanja bilo je poboljsanje nekih svojstava, npr promjene boje, sjaja i hrapavosti povrsine drva kavkaske bukve (Fagus orientalis L.) impregnirane vodoodbojnim kemikalija kao sto su glicerol (GR) i glioksal (GX) nakon izlaganja vremenskim utjecajima. Uzorci drva kavkaske bukve impregnirani su 4 %-tnom vodenom otopinom glicerola, glioksala i mjesavine glicerola i glioksala (1 : 1; v : v) (GR + GX) te su zatim izlozeni vremenskim uvjetima u provinciji Mugla u Turskoj. Rezultati su pokazali da su vrijednosti AL* svojstava svih uzoraka drva nakon izlaganja vremenskim uvjetima smanjene. Nadalje, smanjenje tih vrijednosti na kontrolnim je uzorcima bilo vece nego na impregniranima. Uzorci drva kavkaske bukve pokazali su tendenciju povecanja zelenoga (-Da*) i zutog tona (+Db). Nakon izlaganja vremenskim utjecajima ukupne promjene boje ispitivanog drva kavkaske bukve impregniranoga glicerolom bile su najmanje. Sjaj svih uzoraka ispitivanog drva smanjio se nakon izlaganja vremenskim utjecajima. Pri izlaganju vremenskim uvjetima i nakon toga kontrolni je uzorak imao najmanju hrapavost povrsine za sva tri parametra hrapavosti (Ra, Rz, i Rq). Od impregniranih uzoraka najvece vrijednosti svih triju parametara hrapavosti imali su uzorci impregnirani glicerolom, koji su pokazali i najlosije rezultate hrapavosti povrsine. KLJUCNE RIJECI: glicerol, glioksal, drvo kavkaske bukve, svojstva povrsine, impregnacija |
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ISSN: | 0012-6772 |
DOI: | 10.5552/drvind.2023.0054 |