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Original scientific paper

https://doi.org/10.5552/drind.2016.1444

Effects of Different Kinds of Coating Materials on Properties of Flat Pressed WPC Panels

Pavlo Bekhta ; Department of Wood-Based Composites, National University of Forestry and Wood Technology of Ukraine, Lviv, Ukraine
Pavlo Lyutyy orcid id orcid.org/0000-0003-2669-9983 ; Department of Wood-Based Composites, National University of Forestry and Wood Technology of Ukraine, Lviv, Ukraine
Galyna Ortynska ; Department of Wood-Based Composites, National University of Forestry and Wood Technology of Ukraine, Lviv, Ukraine


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Abstract

The effects of different kinds of coating materials on the properties of flat pressed wood plastic composite (WPC) panels were studied in this work. Rotary-cut birch veneer, sliced oak veneer, phenolic impregnated paper, polyethylene (PE) film, and recycled polyethylene (rPE) layer were used as coating materials. One or two-side coating of WPC panels was carried out simultaneously with their fl at pressing. No coupling agents were used for production of WPC. It was found that properties of fl at pressed WPC panels improved by coating with all investigated coating materials. The highest values of modulus of rupture (MOR) were observed in WPC panels coated with rotary-cut birch veneer and MOR values were higher in along direction than in across direction of veneer fibers. The highest values of water resistance were observed in WPC coated with PE fi lm or rPE layer. Coating of WPC with natural veneer leads to the decreasing of water resistance. Besides, water resistance of WPC coated with one side of natural veneer was higher in comparison with two side coated WPC panels with natural veneer. The two-side coating of WPC with phenolic impregnated paper, PE film or rPE layer leads to the decreasing of water absorption and thickness swelling.

Keywords

coating materials; flat pressing; recycled polyethylene; veneer; wood plastic composites

Hrčak ID:

160165

URI

https://hrcak.srce.hr/160165

Publication date:

29.6.2016.

Article data in other languages: croatian

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