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Vpliv vlažnosti lesa na impregnabilnost in vezavo zaščitnih pripravkov na osnovi bakra in etanolamina : diplomsko delo (visokošolski strokovni študij) = Influence of wood moisture content on impregnability and fixation of copper and ethanolamine based preservatives : graduation thesis (higher professional studies)Nagode, JureBakrovi zaščitni pripravki so zelo razširjeni fungicidi. So zelo učinkoviti, vendar je njihova poglavitna pomanjkljivost slaba vezava v les. Ta lastnost omejuje uporabo zaščitenega lesa tam, kjer ... lahko prihaja do izpiranja aktivnih komponent iz lesa. Fiksacijo bakrovih učinkovin lahko izboljšamo z dodajanjem aminov in karboksilnih kislin. V diplomski nalogi smo raziskovali vpliv vlažnosti lesa na vezavo baker-etanolaminskih pripravkov. Smrekove vzorce smo po postopku polnih celic impregnirali s 4 različnimi kombinacijami in 3 koncentracijami zaščitnih pripravkov na osnovi bakra (bakrovega(II) sulfata ali bakrovega(II) oksida), etanolamina in oktanojske kisline. Po gravimetrično določenem mokrem navzemu smo impregnirane vzorce sušili pri sobni temperaturi. Izpiranje bakrovih učinkovin iz smrekovih vzorcev je potekalo v skladu z nekoliko modificirano standardno metodo SIST EN 1250/2. Delež izpranega bakra v izpirkih smo določili z atomsko absorpcijsko spektroskopijo. Ugotovili smo, da začetna povišana vlažnost vzorcev pozitivno vpliva na vezavo zaščitnih pripravkov na osnovi bakra in etanolamina v les. Najmanj bakra se je izpralo pri vzorcih, ki so imeli celične stene nasičene z vodo (u = 30 %), največ pa pri vzorcih z vlažnostjo med od 0 do 10 %. Tudi sestava pripravkov je vplivala na izpiranje. Pripravki na osnovi bakrovega(II) sulfata so se v les vezali bolje kot pripravki, kjer smo uporabili bakrov(II) oksid.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [J. Nagode], 2007Language - slovenianCOBISS.SI-ID - 1483913
Author
Nagode, Jure
Other authors
Humar, Miha |
Pohleven, Franc
Topics
zašita lesa |
izpiranje |
bakrovi zaščitni pripravki |
etanolamin |
vlažnost lesa |
wood preservation |
leaching |
copper based preservatives |
ethanolamine |
moisture content |
moisture content
Library/institution |
City | Acronym | For loan | Other holdings |
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BF, Department of Wood Science and Technology, Lj. | Ljubljana | BFLES |
reading room 1 cop.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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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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Nagode, Jure | |
Humar, Miha | 19106 |
Pohleven, Franc | 05248 |
Source: Personal bibliographies
and: SICRIS
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