Bazı bitkisel ekstraktlar ile emprenye edilen ağaç malzemelerin yüzey parlaklık özellikleri

Abstract

Özet: Bu çalışmada, %5 ve %10 konsantrasyonlarda mimoza (Acacia mollissima) ve kebrako (Shinopsis lorentzii) ekstraktları ve %4.5’lik Tanalith-E ile emprenye edilen kayın (Fagus orientalis L.) odunundan hazırlanan deney örnekleri poliüretan, selülozik ve su bazlı vernikler ile üst yüzey işlemine tabi tutulmuştur. 100 ve 300 saatlik hızlandırılmış yaşlandırma sonrasında yüzey parlaklığında meydana gelen değişimler araştırılmıştır. Elde edilen sonuçlara göre, yaşlandırma öncesi ve yaşlandırma sorası en yüksek parlaklık değerleri emprenye edilmemiş kontrol örneklerinde elde edilmiştir. Ayrıca poliüretan verniği haricinde genel olarak yaşlandırma işlemi ile birlikte vernik yüzeylerindeki parlaklık değerlerinde azalma meydana gelmiştir. Vernik çeşitleri içerisinde en iyi parlaklık değerleri poliüretan verniğinde elde edilmiştir. 100 saat yaşlandırma işlemine tabi tutulan poliüretan vernikli deney örnekleri kontrol örneklerine göre daha yüksek parlaklık değeri vermiştir. Tanenler ile emprenye edilen örneklerde konsantrasyon seviyesi %5’ten %10’a arttırıldığında parlaklık değerlerinde belli oranlarda azalma görülmüştür. Bu sonuçlara göre, mimoza ve kebrako ekstraktları ile emprenye edilen ağaç malzemeler poliüretan verniği uygulanarak hem dayanıklılıkları hem de yüzey parlaklıkları uzun süre korunabilir.

Anahtar kelimeler: Tanen, vernik, hızlandırılmış yaşlandırma, parlaklık

Received (Geliş): 23.09.2016 - Revised (Düzeltme): 20.10.2016 -   Accepted (Kabul): 02.11.2016

Keywords

• Tanen,vernik,hızlandırılmış yaşlandırma,parlaklık

Surface glossiness properties of wood impregnated with some plant extracts

Abstract

Abstract: In this study, beech woods (Fagus orientalis L.)  were subjected to coating process with polyurethane, cellulosic and water-based varnishes after impregnated with  mimosa (Acacia mollissima) and quebracho (Shinopsis lorentzii) extracts at 5%, and 10% concentration levels and Tanalith-E at %4.5. The changes in surface glossiness were investigated after accelerated weathering for 100 and 300 hours. According to the obtained results, the highest glossiness values for before and after accelarated weathering were obtained untreated control samples. Also, the surface glossiness values were decreased with the accelerated weathering the except for polyurethane varnish. The best result for varnishes types in terms of glossiness have been obtained in polyurethane varnish. The surface glossiness of polyurethane gave higher values when the weathering period reached 100 hours as compared before weathering. When the concentration levels of tannis reached from 5% to 10%, the glossiness values were decreased in certain rates. When the wood materials that impregnated with mimosa and quebracho extracts applied to polyurethane varnish, they can be maintained both durability and surface glossiness for a longer time.

Keywords: Tannin, varnish, accelerated weathering, glossiness

Received (Geliş): 23.09.2016 - Revised (Düzeltme): 20.10.2016 -   Accepted (Kabul): 02.11.2016

Keywords

• Tannin,varnish,accelerated weathering,glossiness

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