Tridimenzionalno tiskanje z mešanico lepila in lesnega prahu : magistrska naloga

Žakelj, Luka (author), Šernek, Milan (mentor), Kariž, Mirko (comentor), Kitek Kuzman, Manja (reviewer)

Tridimenzionalno tiskanje predstavlja nov način izdelovanja predmetov iz računalniškega modela v realen izdelek. Od klasičnih izdelovalnih tehnologij, ki temeljijo na odvzemanju materiala (rezkanje, struženje, brušenje), se razlikuje po tem, da izdelek nastaja z dodajanjem materiala v plasteh. Razvitih je že veliko tehnologij, ki so predvsem primerne za tiskanje s polimeri ali kovinami. V raziskavi smo uporabili tehnologijo 3D-tiskanja za tiskanje kompozita na lesni osnovi. Naš namen je bil prilagoditi obstoječo strojno opremo (3D-tiskalnik) do te mere, da bo omogočal tiskanje mešanice lepila in lesnega prahu ter določiti optimalno mešanico lesnega prahu in lepila za optimalno ekstrudiranje materiala ter zadovoljive mehanske lastnosti natisnjenega izdelka. Pripravili smo dve vrsti mešanic (s PVAc in UF-lepilom) z različnimi deleži lesnega prahu (od 12,5 % do 25 %). V prvem delu raziskave smo določali optimalno mešanico lesnega prahu in lepila ter sile, potrebne za ekstrudiranje mešanice skozi šobo tiskalne glave. V drugem delu pa smo natisnili preizkušance in jih testirali na upogibno trdnost. Ugotovili smo, da so lastnosti končnega natisnjenega materiala predvsem odvisne od lastnosti uporabljenega lepila. Po rezultatih opravljene raziskave lahko sklepamo, da je tridimenzionalno tiskanje z mešanico lepila in lesnega prahu možno, vendar v omejenih dimenzijah (predvsem ploščati izdelki) in z omejenimi mehanskimi lastnostmi izdelka.

• Language: Slovenian
• Keywords: tridimenzionalno tiskanje, lepila za les, lesni prah, upogibna trdnost, modul elastičnosti
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: L. Žakelj
• Year: 2016
• Number of pages: IX, 47 f., [2] f. pril.
• PID: 20.500.12556/RUL-158671
• UDC: 630*824.8
• COBISS.SI-ID: 2683017
• Publication date in RUL: 19.06.2024

ŽAKELJ, Luka, 2016, Tridimenzionalno tiskanje z mešanico lepila in lesnega prahu : magistrska naloga [online]. Master’s thesis. Ljubljana : L. Žakelj. [Accessed 18 May 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=158671

Secondary language

• Language: English
• Title: Three-dimensional printing with a mixture of adhesive and wood powder : M. Sc. thesis

Abstract

Three-dimensional printing is a new way of making real objects from a computer model. From the classical production technologies, based on the removal of the material (milling, turning, grinding) is different in that the product is formed by adding material in layers. There have been developed many technologies that are especially suitable for printing with polymers or metals. In this study we used 3D printing technology to print a mixture of adhesive and wood powder. Our intention was to adapt existing hardware (3D printer) to the extent that will allow printing a mixture of adhesive and wood powder, and to determine the optimal mix of adhesive and wood powder for optimum extrusion material and satisfactory mechanical properties of the printed product. We prepared two types of mixtures (with PVAc and UF adhesive) with different proportions of the wood powder (from 12.5% to 25%). In the first part of the study, we determined the optimal mixture of wood powder and the adhesive and the force needed for extrusion of the mixture through the nozzle of the print head. In the second part, we printed test pieces and tested for flexural strength. We have found out that the properties of the finished printed materials mainly depend on the properties of the adhesive. According to the results of research carried out we can conclude that the three-dimensional printing with a mixture of glue and wood dust is possible, but in limited sizes (mainly flat products) and with limited mechanical properties of the product.

• Keywords: three-dimensional printing, adhesives, wood powder, bending strength, elasticity modulus