Plywood Made from Plasma-Treated Veneers: Investigation of Performance Differences between Plasma-Pretreated and Untreated Beech Veneers at Comparable Melamine Resin Load
| Autor: | Wolfgang Viöl, Richard Wascher, Georg Avramidis |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
melamine resin medicine.medical_treatment Plasma treatment engineering.material dielectric barrier discharge mechanical properties chemistry.chemical_compound Flexural strength Ultimate tensile strength medicine beech veneers Composite material QK900-989 Plant ecology Beech Melamine resin biology liquid uptake Forestry biology.organism_classification thermal modification Compressive strength chemistry plasma treatment engineering Veneer dimensional stability Melamine |
| Zdroj: | Forests, Vol 12, Iss 1423, p 1423 (2021) Forests Volume 12 Issue 10 |
| ISSN: | 1999-4907 |
| Popis: | In this study, the dimensional stability and mechanical properties of plywood made from untreated and plasma-pretreated beech veneers were compared. The wood veneers used (native and thermally modified) were impregnated with melamine resin in a simple dipping process prior to plywood production. The duration of the impregnation process was adjusted to give the same melamine resin loading for the different veneer types, with the plasma-pretreated veneers requiring only a fraction of the impregnation time compared with non-plasma-pretreated veneers. With comparable melamine loading, testing of the mechanical properties of the plywood for the different specimen collectives showed significant differences in some cases with respect to compressive strength, bending strength and tensile strength (with the associated moduli of elasticity). For example, it was shown that plywood made from plasma-pretreated native beech veneers shows an increase in bending strength of about 8%, and from plasma-pretreated and thermally modified beech veneers, there is an increase of about 10% compared to the reference. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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