20.500.12556/RUL-353
Fungicidne lastnosti lesa impregniranega z vodnimi emulzijami voskov
diplomsko delo - visokošolski strokovni študij
Fungicidal properties of wood impregnated with water based wax emulsions
graduation thesis - higher professional studies
Večina slovenskih lesnih vrst ima neodporen les, zato mu pogosto želimo izboljšati to pomanjkljivost. V preteklosti so se v te namene uporabljali predvsem biocidni pripravki, danes pa želimo odpornost izboljšati predvsem z nekemičnimi rešitvami. Eno od možnosti predstavljajo tudi vodne emulzije voskov. Z namenom osvetliti to možnost smo z izbranimi emulzijami voskov (montanskega, polietilenskega in oksidiranega polietilenskega voska) proizvajalcev BASF in Samson impregnirali smrekove in bukove vzorce in jih po 4 tednih sušenja izpostavili delovanju lesnih gliv. Bukove vzorce smo izpostavili delovanju gliv bele trohnobe (Trametes versicolor, Hypoxylon fragiforme in Pleurotus ostreatus), smrekove pa glivam, ki povzročajo rjavo trohnobo (Gloeophyllum trabeum, Antrodia vaillantii in Serpula lacrymans), kot to predpisuje standard SIST EN 113. Po 16 tednih smo vzorce izolirali in gravimetrično določili izgubo mase. Iz rezultatov je razvidno, da vodne emulzije lahko v določenih primerih dobro zaščitijo les pred glivami razkrojevalkami in podaljšajo življenjsko dobo lesa. Med testiranimi emulzijami sta se najbolje obnesli emulziji polietilenskega voska.
The majority of the Slovenian wood species has non-durable wood: therefore, there is general interest to overcome this issue. Biocidal preservatives were used in the past for these purposes, mainly. Nowadays, non-biocidal solutions are preferred. Water wax emulsions are one of the potential solutions. To elucidate this potential, several wax emulsions produced by BASF and Samson (montan, polyethylene, oxidized polyethylene wax) were use for impregnation of wood specimens. After 4 weeks of conditioning, spruce wood specimens were exposed to brown rot fungi (Gloeophyllum trabeum, Antrodia vaillantii in Serpula lacrymans) and beech wood blocks exposed to white rot fungi (Trametes versicolor, Hypoxylon fragiforme in Pleurotus ostreatus) according to the EN 113 procedure. After 16 weeks of exposure, specimens were isolated and their mass loss gravimetrically determined. It can be resolved that some of the wax emulsions can protect wood against wood decay fungi, water emulsions of polyethylene wax, being the most effective.
vodne emulzije voskov
zaščita lesa
lesne glive
montanski vosek
polietilenski vosek
wax water emulsion
wood preservation
wood decay fungi
montan wax
polyethilene wax
true
false
false
[G. Smrdelj]
Slovenski jezik
Angleški jezik
Diplomsko delo
2014-07-11 12:25:13
2014-07-11 12:25:13
2022-07-11 10:20:05
0000-00-00 00:00:00
2009
0
Ljubljana
0
X, 40 f.
0000-00-00
NiDoloceno
NiDoloceno
NiDoloceno
0000-00-00
0000-00-00
0000-00-00
630*841
1716617
vs_smrdelj_gregor.pdf
vs_smrdelj_gregor.pdf
1
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7471a170ec456aedd3f19414b7c9a1f84ea8229793b5f78d2d8670ef780848e1
5dc5d102-a1b9-11eb-a523-00155dcfd717
20.500.12556/rul/33a3aa8b-e09d-46ce-bb3a-dba6d160cc98
https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=132315
Biotehniška fakulteta
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