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Title:Lepljenje lesa z lepilom iz odpadnega polistirena
Authors:ID Šernek, Milan (Author)
ID Kordiš, Aljaž (Author)
Files:.pdf Lepljenje_lesa_z_lepilom-Sernek-2022.pdf (8,82 MB)
MD5: EC9BA043762E391D4CFA8A0A83510FAB
 
URL https://journals.um.si/index.php/anali-pazu/article/view/1895
 
Language:Slovenian
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:UZUM - University of Maribor Press
Abstract:Vsako 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.
Keywords:lepljenje, lepilni spoj, les, polistiren, reciklaža
Publication status:Published
Publication version:Version of Record
Submitted for review:17.09.2021
Publication date:30.04.2022
Place of publishing:Maribor
Publisher:Univerza v Mariboru, Univerzitetna založba
Year of publishing:2022
Number of pages:16
Numbering:Letn.12, št.1
PID:20.500.12556/DKUM-97267 New window
UDC:630*82
ISSN on article:2820-364X
COBISS.SI-ID:106454787 New window
DOI:10.18690/analipazu.12.1.1-18.2022 New window
Publication date in DKUM:26.02.2026
Views:148
Downloads:4
Metadata:XML DC-XML DC-RDF
Categories:Misc.
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Record is a part of a journal

Title:Anali PAZU
Publisher:Združenje Pomurska akademsko znanstvena unija, Združenje Pomurska akademsko znanstvena unija, Univerzitetna založba Univerze v Mariboru
ISSN:2232-416X
COBISS.SI-ID:257553152 New window

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:P4-0015
Name:Les in lignocelulozni kompoziti

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

Language:English
Title:Bonding of Wood With the Adhesive From Waste Polystyrene
Abstract:Each year the world produces more and more durable plastic waste, which is accumulating in nature. One of the solutions to ease its impact is to recycle and reuse it for new products and intermediate products. Recycled plastic, especially thermoplastic, has great potential in the wood industry. In our research, we have used waste coffee cups and spoons made of polystyrene to make two adhesive mixtures, using dimethylformamide as a solvent. To establish the shear strength of adhesive bonds, we made bonded wood panels according to the instructions by standard SIST EN 205:2016. The idea was to optimize the temperature of hot pressing and to add a cooling procedure to ensure better shear strength of the bond, which is needed to reach the minimum criteria of the SIST EN 204:2016 standard. We used two temperatures for hot pressing (150 °C and 120 °C) and four ways of panel cooling in a closed press. After trying out different procedures, we came to the conclusion that the best way to use a coffee cup adhesive is to cool it down to 75 °C, while for the spoon-based adhesive the best bonding method is to cool the joints down to 100 °C or 25 °C. We also found that by cooling the panels in a closed press the consistency of the results increases, which makes the adhesive bonds more reliable. We managed to reach standard criteria with a sample which had been glued with coffee cup adhesive, hot pressed at 150 °C and cooled down to 75 °C before being taken out of the press.
Keywords:gluing, adhesive bond, wood, polystyrene, recycling


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  1. Anali PAZU

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