20.500.12556/RUL-169787 Vpliv sestave zmesi za 3D tisk iz lesnih delcev, mavca in lepila na lastnosti 3D natisnjenega kompozita The influence of the composition of the 3D printing mixture of wood particles, plaster and adhesive on the properties of the 3D printed composite V okviru raziskave smo se posvetili razvoju novega kompozitnega materiala za 3D tiskanje z ekstrudiranjem na osnovi lesnih delcev, mavca in dodatka lepila. S sistematičnim spreminjanjem razmerij posameznih komponent smo proučevali njihov vpliv na tiskalne lastnosti in mehanske karakteristike končnih izdelkov. Ugotovili smo, da večji delež lesnih delcev povečuje potrebno silo za ekstrudiranje materiala skozi tiskalno šobo, medtem ko dodatek lepila to silo zmanjšuje. Pri utrjenih preskušancih je bila ugotovljena najvišja upogibna trdnost (6,7 N/mm²) pri zmesi, ki je vsebovala 25 % lepila, 22 % lesnih delcev in 53 % mavca. Pri materialih z večjim deležem lesnih delcev smo opazili povečano nagnjenost k skrčku in deformacijam med sušenjem, kar je negativno vplivalo na natančnost geometrije končnih izdelkov. Prihodnje raziskave bi se lahko osredotočile na optimizacijo sestave materiala z namenom zmanjšanja deformacij med sušenjem, uporabo večjih lesnih delcev, večjega deleža lesa ter na razvoj novih vrst veziva, ki bi izboljšalo vezavo med posameznimi komponentami in s tem povečalo dolgoročno stabilnost materiala. As part of our research, we focused on the development of a new, environmentally friendly composite material for extrusion-based 3D printing based on wood particles, plaster and an adhesive additive. By systematically varying the ratios of the individual components, we investigated their influence on the printing and mechanical properties of the end products. It was found that a higher proportion of wood particles increases the force required to extrude the material through the printing nozzle, while the addition of adhesive reduces this force. The highest flexural strength of solidified samples (6.7 N/mm²) was found for the mixture containing 25% adhesive, 22% wood particles and 53% plaster. Materials with a higher proportion of wood particles showed an increased tendency to shrink and deform during drying, which had a negative effect on the geometric accuracy of the final products. Future research could focus on optimizing the material composition to reduce drying-related deformations, using larger wood particles and developing new types of binders that would improve the bonding between the individual components, and thus increase the long-term stability of the material. 3D tiskanje aditivna proizvodnja kompozitni materiali les mavec upogibna trdnost deformacije 3D printing additive manufacturing composite materials wood plaster flexural strength deformations true false true Slovenski jezik Angleški jezik Članek v reviji 2025-06-11 10:45:49 2025-06-11 10:45:59 2025-06-13 03:32:48 0000-00-00 00:00:00 2025 0 0 Str. 5-18 št. 1 Let. 74 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2025-01-01 630*86:004.356.2 2590-9932 10.26614/les-wood.2025.v74n01a01 238982147 LesWood_vol74_no01_a01_OL1st.pdf LesWood_vol74_no01_a01_OL1st.pdf 1 6D2CF03E9F994B2A0F628AD3817F899C 777dbbcad947c7484efca61c0074955c86fdce464b3cac2483601ca314af3b12 66b924d0-469f-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=211493 https://journals.uni-lj.si/les-wood/article/view/21408 1 0162a90c-469f-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=211492 Biotehniška fakulteta Les 0 0 0