Lagane drvno-plastične kompozitne ploče: mogućnost proizvodnje i svojstva
| Autor: | Pavlo Lyutyy, Pavlo Bekhta, Galyna Ortynska |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
040101 forestry
Materials science lightweight wood plastic composites recycled low density polyethylene expanded polystyrene wood particles lamination lagani drvno-plastični kompoziti reciklirani polietilen niske gustoće ekspandirani polistiren drvne čestice laminiranje 0401 agriculture forestry and fisheries Forestry 04 agricultural and veterinary sciences Pressed wood Composite material 010402 general chemistry 01 natural sciences 0104 chemical sciences |
| Zdroj: | Drvna industrija Volume 69 Issue 1 |
| ISSN: | 1847-1153 0012-6772 |
| Popis: | Usually the conventional wood plastic composites (WPC) are produced with the densities of approximately 800-1000 kg/m3. The possibility of manufacture and properties of the lightweight fl at pressed WPC using expanded polystyrene was described in this study. The shredded recycled low density polyethylene (rLDPE), wood particles (WP) and expanded polystyrene (EPS) were used for making one-layer lightweight WPC boards (non-laminated and laminated). Bending strength (MOR), modulus of elasticity (MOE), tensile strength perpendicular to the plane of the board (IB) and thickness swelling after immersions in water for 2 hours (TS/2h) and 24 hours (TS/24h) of the lightweight WPC boards were evaluated. It was established that the EPS content and boards’ density as well as the lamination process have a significant impact on the properties of lightweight WPC boards. Thus, it was found that the use of expanded polystyrene enables the production of lightweight WPC within a density range of 500-700 kg/m3, which is almost twofold less than the density of the conventional WPC. The results of research have shown that the bending strength, modulus of elasticity and internal bond strength of non-laminated lightweight WPC boards meet the requirements (for lightweight particleboards) of EN 16368 (type LP1) and ANSI A208.1 (types LD-1 and LD-2) standards. The bending strength and modulus of elasticity of laminated lightweight WPC boards meet the requirements of ISO 13894-2. Konvencionalni drvno-plastični kompoziti (WPC) obično se proizvode s gustoćom od približno 800 – 1000 kg/m3. Tema ove studije jest mogućnost proizvodnje lakih WPC ploča proizvedenih dodatkom ekspandiranog polistirena i njihova svojstva. Za izradu jednoslojnih laganih WPC ploča (nelaminiranih i laminiranih) upotrijebljeni su: usitnjeni reciklirani polietilen niske gustoće (rLDPE), drvne čestice (WP) i ekspandirani polistiren (EPS). Istraživanjem su određena ova svojstva laganih WPC ploča: čvrstoća na savijanje (MOR), modul elastičnosti (MOE), vlačna čvrstoća okomito na ravninu ploče (IB) i debljinsko bubrenje nakon uranjanja ploča u vodu u trajanju 2 sata (TS/2 h) i 24 sata (TS/24 h). Utvrđeno je da udio EPS-a i gustoća ploča, kao i proces laminiranja imaju značajan utjecaj na svojstva laganih WPC ploča. Tako je utvrđeno da upotreba ekspandiranog polistirena omogućuje proizvodnju laganih WPC ploča u rasponu gustoće 500 – 700 kg/m3, što je gotovo dvostruko manje od gustoće konvencionalnih WPC ploča. Rezultati istraživanja pokazali su da čvrstoća na savijanje, modul elastičnosti i čvrstoća unutarnje veze nelaminiranih laganih WPC ploča udovoljavaju zahtjevima (za lagane ploče iverice) standarda EN 16368 (tip LP1) i ANSI A208.1 (tip LD-1 i LD-2). Čvrstoća na savijanje i modul elastičnosti laminiranih laganih WPC ploča udovoljavaju zahtjevima norme ISO 13894-2. |
| Databáze: | OpenAIRE |
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