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Vpliv kemikalij, ki povzročajo nabrekanje celične stene, na impregnabilnost smrekovine : diplomsko delo - univerzitetni študij = Influence of the wood swelling agents on the impregnability of the Norway spruce : graduation thesis - university studies
Pajor, Ajda
Baker-etanolaminski pripravki so trenutno ena izmed najpomembnejših skupin za zaščito lesa v 3. in 4. razredu izpostavitve po standardu SIST EN 335-1/2. Pogosto jih uporabljamo za zaščito naravno ...neodporne smrekovine, ki v Sloveniji predstavlja najpogosteje uporabljano lesno vrsto v konstrukcijske namene. Pri impregnaciji smrekovine z baker-etanolaminskimi pripravki se soočamo s problemom slabe penetracije in izpiranjem bakra iz impregniranega lesa. Z namenom, da bi to težavo omilili, smo obstoječemu Cu-EA pripravku Silvanolinu dodali pet različnih kemikalij, ki povzročajo nabrekanje celične stene (amonijak, dimetil sulfoksid, etilen glikol, trietanolamin in mravljinčno kislino) v treh različnih koncentracijah (2,5 %, 5 % in 10 %). S posameznimi raztopinami smo impregnirali smrekove vzorce z vakuumsko-tlačnim in vakuumskim postopkom in nato določili mokre navzeme, globino penetracije ter delež izpranega bakra po standardu ENV 1250-2. Ugotovili smo, da sta dodatka mravljinčne kisline in trietanolamina močno povečala penetracijo in navzem Cu-EA pripravka v les, obenem pa sta poslabšala fiksacijo bakra v lesu.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [A. Pajor], 2012
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