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Učinkovitost izbranih hidrofobnih pripravkov za les : diplomski projekt = Efficiacy of selected hydrophobic formulations for wood : B. Sc. thesis
Dim, Andrej
Les kot organski material navadno sam po sebi ni dovolj odporen za uporabo na prostem, kjer je izpostavljen različnim dejavnikom razkroja. Zato ga je treba ustrezno zaščititi. Ena od rešitev je ...zaščita s hidrofobnimi pripravki, s katerimi poskušamo preprečiti dodatno navlaževanje lesa in ga s tem obvarovati pred glivnim razkrojem. Preučevali smo, kako učinkovito različni hidrofobni pripravki preprečujejo navlaževanje lesa. Iz smrekovine (Picea abies) smo pridobili vzorce, ki smo jih impregnirali z različnimi hidrofobnimi pripravki (rustikal olje, silikonska emulzija, laneno olje, montanski vosek, tungovo olje, itd.). Po impregnaciji in fiksaciji smo impregnirano stran vzorcev potopili v vodo. Navlaževanje vzorcev smo določili v skladu z modificiranim standardom EN 927-5. Vzorce smo potopili v vodo za točno določena časovna obdobja (1, 2, 3, 4 in 7 dni) in jim gravimetrično določili vlažnost. Nekateri hidrofobni pripravki dobro zaščitijo les pred vlago, drugi pa slabše. Med testiranimi hidrofobnimi pripravki se je najbolje obneslo rustikal olje, najslabše pa polietilenski vosek, ki smo ga pred testiranjem segrevali na 145 °C (WE1 50).
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [A. Dim], 2012
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