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Lepljenje lesa z lepilom iz odpadnega polistirena = Bonding of wood with the adhesive from waste polystyreneŠernek, Milan ; Kordiš, AljažVsako leto svet proizvede čedalje več obstojnih plastičnih odpadkov, ki se kopičijo v naravi. Ena izmed rešitev je njihova reciklaža in ponovna uporaba za izdelavo novih izdelkov ali polizdelkov. ... Reciklirana plastika, predvsem termoplasti, imajo potencial tudi v lesarstvu. V naši raziskavi smo iz odpadnih kavnih lončkov in žličk iz polistirena ter s topilom dimetilformamid izdelali lepilni mešanici in izdelali lepljence iz lesa za ugotavljanje strižne trdnosti lepilnih spojev po standardu SIST EN 205:2016. Uporabili smo dve temperaturi stiskanja (150 °C in 120 °C) ter štiri načine temperiranja oziroma ohlajanja lepljencev pred odprtjem stiskalnice. S primerjavo različnih postopkov lepljenja smo ugotovili, da lepilo iz lončkov najvišjo trdnost doseže po ohladitvi lepljencev na 75 °C preden smo jih vzeli iz stiskalnice, medtem ko lepilo iz žličk po hlajenju lepljencev na 100 °C ali 25 °C. Ugotovili smo tudi, da se s hlajenjem lepljencev na nižjo temperaturo pred odprtjem stiskalnice bistveno zmanjša variabilnost rezultatov, kar priča o bolj zanesljivih lepilnih spojih. Zahteve standarda SIST EN 204:2016 smo uspeli doseči z lepljencem, ki je bil zlepljen z lepilom iz lončkov pri temperaturi 150 °C in ohlajen na 75 °C preden smo ga vzeli iz stiskalnice.Source: Anali PAZU. - ISSN 2232-416X (Letn. 12, št. 1, apr. 2022, str. 1-16)Type of material - article, component partPublish date - 2022Language - slovenianCOBISS.SI-ID - 106454787
Author
Šernek, Milan |
Kordiš, Aljaž
Topics
lepljenje |
lepilni spoj |
les |
polistiren |
reciklaža |
gluing |
adhesive bond |
wood |
polystyrene |
recycling
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Šernek, Milan | 16382 |
Kordiš, Aljaž | ![]() |
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