20.500.12556/RUL-117627 Primerjava novih in starejših standardnih postopkov izpiranja bakrovih učinkovin iz lesa diplomski projekt Comparison of new and past standard procedures for leaching of copper active ingredients from wood Leseni izdelki so na prostem izpostavljeni biotskim in abiotskim dejavnikom razgradnje. V kolikor jih ţelimo ohraniti, ga moramo zaščititi z biocidnimi proizvodi, ki lesu znatno podaljšajo trajnost. Poleg učinkovitosti, je dobra vezava v les ena od ključnih zahtev za dober biocidni proizvod. Za zaščito lesa v zahtevnih zunanjih pogojih uporabe se uporabljajo večinoma bakrovi biocidi, ki jim moramo dodati ustrezne dodatke, ki omogočijo vezavo v les. V preteklosti so se v te namene uporabljale predvsem kromove spojine, danes pa bakrove učinkovine kombiniramo z etanolaminom. V okviru te naloge smo fiksacijo bakrovih in kromovih spojin določali s tremi različnimi standardnimi postopki in sicer; CEN/TS 15119-1:2008, CEN/TS 15119-2:2008 ter ENV 1250-2:1994. Ugotovili smo da so postopki zelo selektivni, in da na količino izpranega bakra vpliva čas trajanja izpostavljenosti lesa v stiku z vodo. Wood in outdoor applications is exposed to biotic and abiotic factors of degradation. To protect it biocidal products, significantly extending the service life of wood, should be used. Besides efficacy, fixation is the second most important criterium for high quality formulation. In demanding conditions, predominately copper biocides are applied for the protection of wood They are supplemented with appropriate chemicals enabling fixation. Previously chromium compounds were used, but nowadays copper substances are combined with ethanolamine predominately. Fixation of copper and chromium compounds was determined according to 3 different standard procedures: CEN/TS 15119-1:2008, CEN/TS 15119-2:2008, and ENV 1250-2:1994. Procedures are very selective, and the amount of leached copper is related to the duration and intensity of leaching. izpiranje bakra primerjava standardov zaščita lesa fiksacija copper leaching standard comparison wood protection fixation true false false [T. Tekalec] Slovenski jezik Angleški jezik Delo diplomskega projekta/projektno delo 2020-07-17 14:52:54 2020-07-17 14:52:59 2022-08-30 03:59:15 0000-00-00 00:00:00 2014 0 Ljubljana 2014 Ljubljana IX, 35 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*841.4 2262153 DIP_Tekalec_Tilen_2014.pdf DIP_Tekalec_Tilen_2014.pdf 1 3CA9E312B433F7C70D1E4E7E864D295D fb4df4f57912d6270d28cfdb723d51f0243274c7f6cbfa6d92131c4787e2ce21 399a731d-a1b9-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=131508 Biotehniška fakulteta 0 0 0