BF, Dept. of Wood Technology, Lj. (BFLES)
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Vpliv dodatka za povečanje ognjeodpornosti na lastnosti ivernih plošč : diplomsko delo = impact of fire retardant on the properties of particleboard : B. Sc. thesisPirš, DejanOdpornost lesnih plošč proti gorenju je, poleg mehanskih in sorpcijskih lastnosti, ena izmed pomembnejših lastnosti, s katero opredeljujemo njihovo uporabnost v konstrukcijske namene. Povečano ... ognjeodpornost ivernih plošč lahko dosežemo z dodajanjem sredstva za povečanje ognjeodpornosti že med izdelavo plošč ali pa z dodajanjem sredstva na že izdelane plošče. S ciljem ugotavljanja dodatka sredstva za povečanje ognjeodpornosti (Burnblock) na mehanske in sorpcijske lastnosti ter odpornosti proti gorenju smo izdelali trislojne iverne plošče katerim smo dodali različne količine Burnblocka, kot sredstva za povečanje odpornosti proti gorenju. Primerno količino Burnblocka (med 10 kg/m3 in 30 kg/m3, glede na maso lesa), smo dodali v fazi priprave lepilne mešanice, ali pa smo brizgali vodno raztopino (18,5 %) na zunanji sloj, pred samim stiskanjem. Vsem ploščam smo določili vlažnost, gostoto in debelino, debelinski nabrek in vpijanje vode, upogibno trdnost in modul elastičnosti, razslojno trdnost, čvrstost površine in stopnjo odpornosti proti gorenju. Ugotovili smo, da se z dodajanjem Burnblocka zmanjša debelinski nabrek (pozitivni učinek), upogibna trdnost in modul elastičnosti (negativni učinek). Stopnja spreminjanja z naraščanjem količine Burnblocka je manj intenzivna. Zaradi dodajanja sredstva v zunanji sloj je bil vpliv na razslojno trdnost minimalen. Pri krajši izpostavitvi (60 sekund) vroči plošči se je izguba mase povečevala z večanjem deleža sredstva, medtem ko je pri daljši izpostavitvi (300 sekund) trend izgube mase obraten. Pri daljšem času izpostavitve smo opazili, da se z večanjem deleža Burnblocka manjša debelina zoglenele plasti.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [D. Pirš], 2021Language - slovenianCOBISS.SI-ID - 81103619
Author
Pirš, Dejan
Other authors
Medved, Sergej |
Lesar, Boštjan |
Humar, Miha
Topics
Burnblock |
gorljivost |
iverne plošče |
mehanske lastnosti |
zaviralec ognja |
Burnblock |
flammability |
particleboard |
mechanical properties |
fire-retardant
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Knjižnica BF za lesarstvo du1 0000000120 IN: 020210095 Knjižnica BF za lesarstvo du1 120 IN: 020210095 |
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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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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Pirš, Dejan | ![]() |
Medved, Sergej | 15410 |
Lesar, Boštjan | 28503 |
Humar, Miha | 19106 |
Source: Personal bibliographies
and: SICRIS
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