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Zaščita lesa pred UV-svetlobo s titanovim dioksidom in premazi : diplomsko delo = Protection of wood against UV-light with titanium dioxide and coatings : B. Sc. thesisKrižan, JernejUltravijolična (UV) svetloba negativno vpliva na obstojnost lesa. Posledično je za boljšo obstojnost treba les zaščititi. Na lignin, sestavino, ki najbolj vpliva na barvo lesa, fotodegradacijski ... učinki vplivajo najbolj. Za zaščito lesa pred UV-svetlobo uporabljamo tudi nanodelce titanovega dioksida. V raziskavi smo izvedli depozicijo titanovega dioksida na smrekov les in termično modificiran smrekov les. Prisotnost delcev TiO2 na površini lesa smo potrdili z analizo z vrstičnim elektronskim mikroskopom (SEM). Preskušance smo nato premazali s komercialnim pripravkom na osnovi naravnih olj, namenjenim zaščiti lesa na prostem. Vzorce smo izpostavili UV-svetlobi in merili barvo in sijaj. V času 14-dnevnega merjenja smo ugotovili, da se je kot barvno najbolj stabilen izkazal termično modificiran les z depoziti titanovega dioksida ter les, ki je bil premazan z oljem, najslabše pa navaden smrekov les, brez depozitov in olja. Delci titanovega dioksida na termično modificiranem smrekovem lesu izboljšajo odpornost proti UV-svetlobi, medtem ko omenjeni nanodelci v kombinaciji z oljem na navadnem smrekovem lesu ne pokažejo učinka zaščite. Kontaktni kot vode je večji pri preskušancih z oljem. Navzem vode se z zaščito s titanovim dioksidom in oljem zmanjša.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [J. Križan], 2017Language - slovenianCOBISS.SI-ID - 2803337
Author
Križan, Jernej
Other authors
Petrič, Marko, 1962- |
Poljanšek, Ida
Topics
zaščita lesa |
UV-svetloba |
titanov dioksid |
sprememba barve |
wood protection |
UV-light |
titanium dioxide |
color change
Library | Call number – location, accession no. ... | Copy status |
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BF, Dept. of Wood Technology, Lj. | Knjižnica BF za lesarstvo dv1 92 IN: 020170112 |
available - reading room |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Križan, Jernej | |
Petrič, Marko, 1962- | 00395 |
Poljanšek, Ida | 12041 |
Source: Personal bibliographies
and: SICRIS
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