BF, Dept. of Wood Technology, Lj. (BFLES)
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Lastnosti macesnovega lesa obdelanega z emulzijami voskov : magistrsko delo = Properties of larch wood treated with wax emulsions : M. Sc. thesisŽitko, SamoSibirskega macesna se drži sloves odporne drevesne vrste. Zaradi vse večje uporabe macesnovine, se uporabniki pogosto zatekajo k alternativam. Zato se na trgu vse pogosteje pojavlja tudi plantažni ... les macesna, ki ima slabše odpornostne lastnosti. Sibirski macesen je znan tudi po problemih, povezanih z iztekanjem smole. Zato smo želeli raziskati možnosti predobdelave oziroma različne priprave površin lesa sibirskega macesna, ki bo omogočala kakovostno obdelavo. Zanimal nas je vpliv različnih temperatur sušenja na iztekanje smole. Najbolje se je izkazala najvišja temperatura. Zato smo polovico vseh vzorcev za 30 minut izpostavili na 140 °C. Za medsebojno primerjavo smo teste izvajali še na navadni in termično modificirani smrekovini. Vzorce smo zaščitili z različnimi koncentracijami hidrofobnega pripravka Silvacera (emulzija voska) in oljem Remmers. Lastnosti površine smo ovrednotili v laboratoriju, obnašanje modificiranega lesa smo spremljali tudi med terensko izpostavitvijo. Z laboratorijskimi testi smo ovrednotili vodoodbojnost, kratkotrajni in dolgotrajni navzem vode in vodne pare. Vzorce na prostem smo izpostavili vremenskim vplivom in opazovali barvne in površinske spremembe. Termično modificirana smrekovina je izkazovala najboljše lastnosti pri testih v laboratoriju. S termično modifikacijo se izboljšajo sorpcijske lastnosti in večja dimenzijska stabilnost zaradi manjše higroskopnosti. Zunanji testi so pokazali, večja kot je bila koncentracija pigmenta, manjše barvne spremembe smo zaznali.Type of material - master's thesis ; adult, seriousPublication and manufacture - Ljubljana : [S. Žitko], 2021Language - slovenianCOBISS.SI-ID - 57973507
Author
Žitko, Samo
Other authors
Lesar, Boštjan |
Humar, Miha
Topics
vosek |
sibirski macesen |
smrekovina |
hidrofobni pripravki |
staranje |
staranje |
wax emulsions |
Siberian larch |
spruce |
hydrophobic formulations |
ageing |
ageing
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Knjižnica BF za lesarstvo du2 0000000065 IN: 020210016 Knjižnica BF za lesarstvo du2 65 IN: 020210016 |
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DRS, in which the journal is indexed
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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Žitko, Samo | ![]() |
Lesar, Boštjan | 28503 |
Humar, Miha | 19106 |
Source: Personal bibliographies
and: SICRIS
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