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Effect of thermal modification of wood on the rheology, mechanical properties and dimensional stability of wood composite filaments and 3D-printed parts [Elektronski vir]Krapež Tomec, Daša, 1990- ...This paper describes the development and characterisation of wood-filled polylactic acid (PLA) composite filaments for application in fused filament fabrication three-dimensional (3D) printing. Four ... different wood-polymer composite filaments for 3D printing were prepared, and specimens were 3D-printed with the obtained materials. The composite filaments consisted of wood particles (10% or 20% mass ratio) and a PLA polymer matrix. Wood particles were prepared by grinding and sieving non-modified beech wood and thermally modified (TM) (at 200 °C) beech wood. Thermal modification of wood affected particle preparation and smaller particles with lower aspect ratios were obtained. Filaments with TM wood particles were extruded better than with non-modified wood particles, with lower surface roughness and lower porosity. With a higher wood ratio, the surface roughness and porosity of the filament increased. Non-homogenous filaments also affected extrusion in 3D printing and reduced the properties of 3D-printed parts. Parts 3D-printed from filaments with TM particles had better tensile strength than from filaments with non-modified particles, but were lower than from pure PLA filaments. The tensile strength of the injection-moulded specimens was 18–69% higher than that of the 3D-printed specimens, depending on the filament composition. The results indicate some positive effects of thermal modification of wood particles on the properties of filaments and 3D-printed parts. Nevertheless, further optimisation of particle preparation and extrusion parameters is needed to obtain quality filaments with this size of wood particles.Vir: Wood material science & engineering. - ISSN 1748-0280 (Vol. [sprejeto v objavo], iss. [sprejeto v objavo], 2024, str. 1-15)Vrsta gradiva - e-članek ; neleposlovje za odrasleLeto - 2024Jezik - angleškiCOBISS.SI-ID - 186147843
Avtor
Krapež Tomec, Daša, 1990- |
Schöflinger, Manfred |
Leßlhumer, Jürgen |
Žigon, Jure |
Humar, Miha |
Kariž, Mirko
Teme
les-PLA kompozit |
3D tisk |
termično modificiran les |
dimenzijska stabilnost |
mehanske lastnosti |
wood-polylactic acid composite |
3D printing |
thermally modified wood |
dimensional stability |
mechanical properties
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Avtor | Krapež Tomec, Daša, 1990- ... |
Naslov | Effect of thermal modification of wood on the rheology, mechanical properties and dimensional stability of wood composite filaments and 3D-printed parts [Elektronski vir] |
Datum objave | 2024-02-15 |
COBISS.SI-ID | 186147843 |
Verzija objave v repozitoriju | Založnikova različica |
Licenca objave v repozitoriju | Creative Commons Priznanje avtorstva 4.0 Mednarodna |
Embargo | Ni določeno |
Projekti, iz katerih je bila financirana objava
Naziv | Akronim | Številka projekta | Financer |
---|---|---|---|
Les in lignocelulozni kompoziti | P4-0015-2020 |
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Gozdno-lesna veriga in podnebne spremembe: prehod v krožno biogospodarstvo | P4-0430-2022 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Krapež Tomec, Daša, 1990- | 52214 |
Schöflinger, Manfred | ![]() |
Leßlhumer, Jürgen | ![]() |
Žigon, Jure | 37804 |
Humar, Miha | 19106 |
Kariž, Mirko | 29227 |
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