diplomsko delo
Povzetek
Cilj diplomske naloge je bil ugotoviti, kako površinske poškodbe vplivajo na dinamiko navlaževanja lesenih okenskih profilov. Za raziskavo smo pripravili vzorce različnih lesenih okenskih profilov s površinskimi razami in poškodbami toče ter jih v časovnem obdobju dveh mesecev izpostavili tedenskemu ciklu, sestavljenem iz 4 faz (izpostavitev visoki zračni vlažnosti, sušenje, simulacija dežja, sušenje). Po vsaki fazi cikla smo vzorcem izmerili maso in vlažnost. Analizirali smo tudi barvne spremembe površine. Cilj naloge je bil tudi ugotoviti, kako določene površinske poškodbe vplivajo na razvoj gliv modrivk in plesni. Drugi skupini enako pripravljenih vzorcev, izpostavljenih v klimi z visoko relativno zračno vlažnostjo, smo vsak teden izmerili maso ter opazovali razvoj plesni in gliv modrivk na površini. Ugotovili smo, da površinske poškodbe ne vplivajo na spremembo barve. Kontrolni vzorci brez površinskega premaza so imeli največje barvne spremembe. Hipoteza, da bodo vzorci poškodovanih lesenih okenskih profilov imeli višjo vlažnost, kot referenčni nepoškodovani vzorci, je bila pravilna, saj so pri vsaki izpostavitvi visoki vlagi vzorci s poškodbami dosegali višje vrednosti. Poškodbe niso vplivale na končno vlažnost po sušenju. Poškodbe zaradi toče so najbolj vplivale na dinamiko navlaževanja. Druga hipoteza, da se bodo pod poškodovanim zaščitnim filmom prej pojavile glive modrivke kot pod nepoškodovanim zaščitnim filmom, je bila pravilna, saj so se hife najprej pojavile na poškodovanih območjih.
Ključne besede
les;dinamika navlaževanja;vlažnost lesa;glive modrivke;plesni;
Podatki
Jezik: |
Slovenski jezik |
Leto izida: |
2021 |
Tipologija: |
2.11 - Diplomsko delo |
Organizacija: |
UL BF - Biotehniška fakulteta |
Založnik: |
[D. Heller] |
UDK: |
630*842:630*844.1 |
COBISS: |
73033987
|
Št. ogledov: |
263 |
Št. prenosov: |
22 |
Ocena: |
0 (0 glasov) |
Metapodatki: |
|
Ostali podatki
Sekundarni jezik: |
Angleški jezik |
Sekundarni naslov: |
Influence of window profile damage on moisture performance of wood |
Sekundarni povzetek: |
The aim of the diploma thesis was to determine how certain surface damages affect the moisture dynamics of wooden window profiles. For the research, we prepared samples of various wooden window profiles with surface scratches and hail damage and exposed them to a weekly cycle consisting of 4 phases (exposure to high humidity, drying, rain simulation, drying) over a period of two months. After each phase of the cycle, the samples were measured for mass and moisture content. We also analysed the colour changes of the surface. The aim of the thesis was also to determine how certain surface damages affect the development of mould and staining-fungi. We measured the mass of another group of equally prepared samples every week that were exposed to a climate with high relative humidity and observed the development of mould and staining-fungi on the surface. We found that surface damage did not affect the colour change. Control samples without surface coating had the largest colour changes. The hypothesis that the samples of damaged wooden window profiles will have a higher wood moisture content than the reference undamaged samples was correct, as with each exposure to high humidity, the damaged samples reached higher values. The damage did not affect the final moisture content after drying. Hail damage had the greatest impact on moisture dynamics. The second hypothesis that staining-fungi would appear under the damaged protective film sooner than under the undamaged protective film was correct, as hyphae first appeared in the damaged areas. |
Sekundarne ključne besede: |
wood;moisture dynamics;moisture content;staining fungi;mould; |
Vrsta dela (COBISS): |
Diplomsko delo/naloga |
Študijski program: |
0 |
Komentar na gradivo: |
Univ. v Ljubljani, Biotehniška fak., Oddelek za lesarstvo |
Strani: |
X, 46 f., [4] f. pril. |
ID: |
13243600 |