Comparison of Some Physical and Mechanical Properties of Waterborne Acrylic Coating Systems Containing Commercial UV Absorbers and Tree Bark Extracts

Year 2019, Volume: 19 Issue: 3, 310 - 316, 23.12.2019

Özlem Özgenç , Süleyman Kuştaş Sefa Durmaz

https://doi.org/10.17475/kastorman.662697

Abstract

Aim of study: The aim of this study was to compare solid content, dry film thickness, and adhesion strength of different tree bark extract based and a commercial UV absorber.
Materials and methods: Waterborne acrylic-based coating systems containing 5 different tree bark extracts (maritime pine, Calabrian pine, black pine, alder, fir) and a commercial UV absorber (Tinuvin 400 DW) were applied to 2 different wood species; Scots pine (Pinus sylvestris L.) and beech (Fagus orientalis L.). The dry-film thicknesses of the coatings were measured with light microscopy. The adhesion strength of the coatings was determined to investigate the bonding ability of the coatings with wood surfaces. The solid contents of the coatings were also determined.
Main results: Permeability is an important parameter for dry-film thickness and adhesion strength. Wood species also influenced the dry-film thickness as well as adhesion strength. The dry-film thicknesses of the coatings containing bark extracts were higher than those with commercial UV absorbers. Similarly, the solid content of the coating containing maritime pine bark extract was found to be the highest.
Highlights: The dry-film thickness and adhesion strength of waterborne acrylic coatings on wood substrate seem to be affected by addition of tree bark extracts.

Keywords

Acrylic Coating, Adhesion Strength, Dry Film Thickness, Tree Bark Extract, Pull-Off Test

Ticari UV Absorber ve Ağaç Kabuk Ektraktı İçeren Su Bazlı Akrilik Yüzey Koruyucu Sistemlerin Bazı Fiziksel ve Mekanik Özelliklerinin Karşılaştırılması

Abstract

Çalışmanın amacı: Bu çalışmanın amacı su bazlı yüzey koruyucu sistemlerin bazı fiziksel ve mekanik özelliklerinin incelenmesidir.
Materyal ve yöntem: 5 farklı ağaç türü (göknar, kızılçam, karaçam, kızılağaç, sahil çamı) ve UV absorber (Tinuvin 400 DW) içeren su bazlı akrilik reçine yüzey koruyucu sistemleri 2 farklı ağaç türüne; sarıçam (Pinus sylvestris L.) ve kayın (Fagus orientalis L.) uygulanmıştır. Kuru film kalınlıkları ışık mikroskobu ile ölçülmüştür. Yüzey koruyucuların yüzey ile bağlanma yeteneklerini incelemek amacıyla yapışma direnci belirlenmiştir. Ayrıca yüzey koruyucuların katı madde miktarları da belirlenmiştir.
Sonuçlar: Geçirgenlik, kuru film kalınlığı ve adezyon direnci için önemli bir parametredir. Aynı zamanda odun türü de kuru film kalınlığı ve adezyon direncini etkilemektedir. Kabuk ekstraktı içeren yüzey koruyucuların kuru film kalınlıkları ticari UV absorver içerenlerden daha yüksek bulunmuştur. Benzer şekilde, en yüksek katı madde miktarı sahil çamı ekstraktı içeren yüzey koruyucuda bulunmuştur.
Önemli vurgular: Su bazlı akrilik yüzey maddelerinin kuru film kalınlığı ve adezyon direncinin ahşap malzemeler üzerinde önemli etkileri vardır.

Keywords

Akrilik Yüzey Maddesi, Yapışma Direnci, Kuru Film Kalınlığı, Ağaç Kabuk Ekstraktı, Çekme Testi

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