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Odpornost lesa, zaščitenega z železovimi ioni in biocidi, proti lesnim glivam in vodi : magistrsko delo = Performance of wood treated with iron ions and biocides against wood decay fungi and water : M. Sc. thesisŠkamlec, MarkoZaradi ekološkega vidika in poznavanja pravilne rabe lesa njegova uporaba vedno bolj narašča. Zanimiv je neobdelan naravno posivel videz lesa. Ker so procesi staranja različni glede na zaščito, način ... vgradnje, mesta vgradnje, orientacije strani neba itd., smo razvili pripravek, ki odstrani oz. zelo zmanjša te vplive in poenoti videz lesa na vseh mestih in načinih vgradnje. Osnovna raztopina je bila sestavljena iz demineralizirane vode in železovega (II) sulfata (FeSO4). V različnih kombinacijah in koncentracijah smo dodajali borovo kislino (Ba) ter kvartarne amonijeve spojine (QUAT), ki se uporabljata za biocidno zaščito. Pripravke smo testirali na lesu macesna (Larix decidua Mill.) in smreke (Picea abies Karst.). Macesen smo uporabili le pri zunanji izpostavitvi. Vzorce smo pred testiranjem za deset minut potopili v različne kombinacije raztopin. Polovico smo jih nato UV izpostavili. Naredili smo test odpornosti proti glivam razkrojevalkam. Pri netretiranih vzorcih smo izmerili povprečno izgubo mase 17,16 %. Najboljšo zaščito lesa smo dosegli s pripravkom 5 % FeSO4 + 0,2 % Ba + 0,2 % QUAT. Prav tako se je ta pripravek najboljše obnesel pri kratkotrajnem in dolgotrajnem potapljanju ter pri izpostavitvi 100 % zračni vlažnosti. Povprečna vsebnost železa po obdelavi, izmerjena na XRF, je znašala približno 990 ppm in se je po prvem tednu skoraj prepolovila. Končna vsebnost po 9 mesecih je bila nekje 80 ppm. Železov sulfat reagira z lesom in v nekaj dneh vzorci pridobijo sivo patino podobno kot pri naravnem staranju. Obdelani vzorci so po enem tednu že temnejši, kot neobdelani po 9 mesecih.Type of material - master's thesis ; adult, seriousPublication and manufacture - Ljubljana : [M. Škamlec], 2021Language - slovenianCOBISS.SI-ID - 76759299
Author
Škamlec, Marko
Other authors
Lesar, Boštjan |
Humar, Miha
Topics
železov (II) sulfat |
biocidi |
staranje |
izpiranje |
navlaževanje |
glive razkorjevalke |
glive razkorjevalke |
iron (II) sulfate |
biocides |
aging |
leaching |
humidification |
wood decay fungi |
wood decay fungi
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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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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Škamlec, Marko | |
Lesar, Boštjan | 28503 |
Humar, Miha | 19106 |
Source: Personal bibliographies
and: SICRIS
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