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Accelerated weathering performance of Scots pine preimpregnated with copper-based chemicals before varnish coating Part:1 coated with cellulosic and polyurethane varnishes

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Date

2020

Author

Gündüz, Ahmet
Baysal, Ergün
Türkoğlu, Türkay
Altay, Çağlar
Küçüktüvek, Mustafa
Toker, Hilmi
Peker, Hüseyin

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Citation

Gündüz, A., Baysal, E., Türkoğlu, T., Altay, C., Küçüktüvek, M., Toker, H., & Peker, H. (2020). Accelerated weathering performance of Scots pine preimpregnated with copper‐based chemicals before varnish coating Part: 1 coated with cellulosic and polyurethane varnishes. Coloration Technology, 136(1), 34-44.

Abstract

This study aimed to determine the effect of accelerated weathering on gloss, surface hardness and colour changes of Scots pine (Pinus sylvestris L.). Test samples were impregnated with Adolit KD‐5, Wolmanit CX‐8 and Celcure AC‐500 covered with cellulosic and polyurethane varnishes. The results showed that the values of surface hardness and gloss increased after accelerated weathering. While the surface hardness of Scots pine was increased for impregnated and polyurethane‐coated varnish, it decreased for impregnated and cellulosic varnish‐coated Scots pine after 1000 hours of accelerated weathering exposure. Copper‐based chemical impregnation and varnish coating developed the gloss of Scots pine specimens relative to the surface characteristics observed in single‐coated Scots pine specimens. While the most appropriate chemical was Celcure AC‐500 for surface hardness, it was Adolit KD‐5 for the gloss of Scots pine after 1000 hours of accelerated weathering exposure. Wood specimens impregnated prior to the application of varnish were more effective in stabilising the colour of Scots pine than Scots pine only coated with varnish. Polyurethane varnish‐ treated Scots pine showed better colour stability for each partial and total accelerated weathering exposure period. The total colour changes were lowest for polyurethane varnish‐coated Scots pine impregnated with Celcure AC‐500 after 1000 hours of accelerated weathering exposure.

Source

Coloration Technology

Volume

136

Issue

1

URI

https://hdl.handle.net/11494/2107

Collections

  • Orman Endüstri Mühendisliği Bölümü Yayın Koleksiyonu [142]
  • Scopus İndeksli Yayınlar Koleksiyonu [879]
  • WoS İndeksli Yayınlar Koleksiyonu [1133]



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