diplomsko delo
Megi Pilko (Author), Marko Petrič (Reviewer), Sebastian Dahle (Mentor), Matjaž Pavlič (Co-mentor)

Abstract

V diplomskem delu smo analizirali površino smrekovega (Picea abies (L.) Karst.) lesa, po obdelavi z dielektrično barierno razelektritveno (DBD) plazmo in premazovanju površin. Uporabili smo transparentna brezbarvna premazna sredstva (na osnovi organskih topil in vode) ter okolju prijaznejše sredstvo (tungovo olje). Znano je, da na estetske in fizikalne lastnosti lesa (npr. barva, sijaj, oprijemna trdnost, napake) negativno vpliva izpostavitev površin vremenskim in okoljskim vplivom. Z določanjem stičnih kotov na obdelanih in neobdelanih površinah smo preučili vpliv spreminjanja parametrov obdelave na omočljivost lesa. Po izpostavitvi zunanjim pogojem smo vzorce spremljali v časovnih obdobjih enega, treh, šestih mesecev in ob koncu preskusa (po 10 mesecih). Ugotovili smo, da je obdelava lesa s plazmo zmanjšala stopnjo okuženosti na prostem izpostavljenih premazanih površin z biotskimi dejavniki in posredno, da je pozitivno vplivala na globino penetracije premaza, ni pa imela pomembnejšega vpliva na obarvanje in sijajnost površin ter oprijemnost premazov.

Keywords

DBD plazma;premazni sistemi;smreka;izpostavitev na prostem;oprijemnost;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL BF - Biotechnical Faculty
Publisher: [M. Pilko]
UDC: 630*829.9
COBISS: 29025283 Link will open in a new window
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Downloads: 104
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Other data

Secondary language: English
Secondary title: Influence of plasma treatment on the performance of surface systems during outdoor exposure
Secondary abstract: In this thesis, we analysed the surface of spruce (Picea abies (L.) Karst.) wood after treatment with dielectric barrier discharge (DBD) plasma and subsequent surface coating. We used transparent colourless coatings (solvent- and water-borne) and a more environmentally friendly agent (tung oil). It is known that the aesthetic and physical properties of wood (eg. colour, gloss, adhesive strength, defects) are negatively affected by the exposure of surfaces to weather and environmental influences. By determining the contact angles on treated and untreated surfaces, we studied the influence of changing treatment parameters on the wettability of wood. After exposure to external conditions, the samples were monitored over time periods of one, three, six months and at the end of the test (after 10 months). The results showed that the plasma treatment of wood decreased the degree of contamination of coated surfaces, exposed in exterior, with biotic factors, and indirectly it had a positive effect on the penetration depth of the coatings, but did not have such significant effect on the colour, gloss of surfaces and adhesion of coatings.
Secondary keywords: DBD plasma;coating systems;spruce;outdoor exposure;adhesion;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Thesis comment: Univ. v Ljubljani, Biotehniška fak., Oddelek za lesarstvo
Pages: IX, 48 f., [13] f. pril.
ID: 12042843