Selected properties of flat-pressed wood-polymer composites for high humidity conditions
| Autor: | Jacek Wilkowski, Krzysztof Krajewski, Radosław Auriga, Piotr Borysiuk, Alicja Auriga, Adrian Skomorucha |
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| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
Absorption of water Materials science Composite number Bioengineering Young's modulus Pressed wood Polyethylene Surface energy symbols.namesake chemistry.chemical_compound chemistry Flexural strength symbols medicine Composite material Swelling medicine.symptom Waste Management and Disposal |
| Zdroj: | BioResources. 15:5141-5155 |
| ISSN: | 1930-2126 |
| DOI: | 10.15376/biores.15.3.5141-5155 |
| Popis: | This study investigated the possibility of applying flat-pressed wood-polymer composites in conditions of high humidity. The experiment involved three variants of wood-polymer composite panels 16 mm thick, and 680 kg per m3 density. The wood particles were bonded with polyethylene. The share of polyethylene in the core layer was fixed at 50%, while in the face layers the content was varied (40%, 50%, or 60%). The following parameters were examined: modulus of rupture (MOR), modulus of elasticity (MOE), internal bond (IB), screw holding (SH), thickness swelling (TS), water absorption (WA), susceptibility to drilling and milling, wettability and surface free energy, and resistance to mold. The results were compared to particleboard glued with urea-formaldehyde resin. The wood-polymer composite had lower MOR and MOE values and similar IB and SH values. The panels indicated a remarkably higher water resistance (lower TS and WA values) with good surface wettability and high resistance to mold fungi. Additionally, the composites were easier to machine, e.g. drilling or milling, in comparison to standard particleboards. |
| Databáze: | OpenAIRE |
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