Primerjava obdelave mizne plošče iz masivne hrastovine z lakom na osnovi organskih topil in z vodnima lakoma : diplomsko delo - visokošolski strokovni študij

Žabčić, Gregor (author), Petrič, Marko (mentor), Pavlič, Matjaž (comentor), Poljanšek, Ida (reviewer)

Ugotavljali smo, če je v manjšem lesarskem obratu možno zamenjati površinski sistem na osnovi organskih topil s površinskim sistemom na vodni osnovi, ter s tem zmanjšati vnos hlapnih organskih spojin v okolje. Testirali smo poliuretanski (PU) lak ter enokomponentni (V1) in dvokomponentni (V2) vodni lak. Za zamenjavo PU laka je najpomembneje, da zagotavlja lak, s katerim ga bomo zamenjali, primerljive lastnosti obdelanih površin. Vse sisteme smo nanesli z navadnim zračnim razprševanjem na masivne širinsko lepljene hrastove plošče. Vsi 3 površinski premazi so bili zračno sušeni. Ugotovili smo, da bi PU sistem lahko zamenjali z obema vodnima sistemoma, vendar so bili pri laku z oznako V2 rezultati boljši kot pri drugem laku (V1). Izračun zmanjšanja hlapnih organskih spojin, ob predpostavljeni proizvodnji, pokaže, da bi z zamenjavo PU sistema z vodnim sistemom zmanjšali emisije hlapnih organskih spojin za slabi 2 toni letno.

• Language: Slovenian
• Keywords: premazi za les, vodni sistemi, odpornostne lastnosti, uredba HOS
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [G. Žabčić]
• Year: 2013
• Number of pages: IX, 62 f.
• PID: 20.500.12556/RUL-117578
• UDC: 630*829.17
• COBISS.SI-ID: 2145673
• Publication date in RUL: 16.07.2020

Secondary language

• Language: English
• Title: Comparison of treatment of a table top made of solid oak wood with a solvent borne varnish and with two water borne varnishes

Abstract

The aim of the research was to establish the possibility for a small joinery workshop to replace wood coating systems on the basis of organic solvents with waterborne varnishes to reduce emissions of volatile organic compounds into the environment. We compared a solvent borne polyurethane (PU) wood coating with 1- and 2- component waterborne coatings. To replace a solvent borne PU wood coating its most important that the alternative waterborne wood finishes assure comparable properties on the treated surfaces. All tested coating systems were applied by a conventional air spraying process on single-layer solid oak wood panels. All 3 surface coatings were air dried. It was found out, that the solvent borne PU coating system could be replaced with both tested waterborne systems. However, the results of the waterborne coating with a V2 label were better than those of the V1 coating. Calculation of the reduction of volatile organic compound emissions for the assumed production shows that the replacement of the solvent borne PU system with the water borne coating systems could reduce emissions of volatile organic compounds for almost 2 tons per year.

• Keywords: wood coatings, water borne systems, resistance properties, VOC Decree