Izdelava filamenta iz polivinil alkohola in mikrokristalne celuloze

Peric, Matic (author), Valentinčič, Joško (mentor), Lebar, Andrej (co-mentor)

Uporaba aditivnih tehnologij je v porastu. Ena izmed teh je tudi tehnologija ciljnega nalaganja. 3D tiskalniki, ki delujejo po principu ciljnega nalaganja, uporabljajo filamente iz različnih polimerov. Zaradi svetovnih razmer so v ospredju raziskav biorazgradljivi materiali. V nalogi obravnavamo izdelavo okolju prijaznega filamenta za 3D tiskalnik iz polivinil alkohola z dodatkom mikrokristalne celuloze za izboljšanje mehanskih lastnosti. Izdelali smo testne granule iz polivinil alkohola in mikrokristalne celuloze v različnih koncentracijah. S postopkom ekstruzije smo granule pretvorili v filamente z različnimi vsebnostmi celuloze. Na vzorcih filamentov smo opravili optične analize in dimenzijske meritve. Ugotovili smo, da so filamenti v večini homogeni in dobro strukturirani. Vendar so za uporabo filamenta na 3D tiskalniku še potrebne dodelave.

• Language: Slovenian
• Keywords: polivinil alkohol, mikrokristalna celuloza, filamenti, ekstruzija, mešanje praškov, granuliranje
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [M. Peric]
• Year: 2020
• Number of pages: XXII, 44 str.
• PID: 20.500.12556/RUL-119473
• UDC: 621.79:678.7:661.728.7(043.2)
• COBISS.SI-ID: 32550659
• Publication date in RUL: 09.09.2020

Secondary language

• Language: English
• Title: Production of filament from polyvinyl alcohol and microcrystalline cellulose

Abstract

The use of additive manufacturing technologies is on the rise. One of these is also Fused Filament Fabrication. 3D printers, that use FFF technology, use polymer filaments. Due to the global situation, biodegradable materials are at the forefront of research. The aim of the thesis is to make an environmentally friendly filament for 3D printers from polyvinyl alcohol with the addition of microcrystalline cellulose to improve mechanical properties. Test granules from polyvinyl alcohol and microcrystalline cellulose in different concentrations were transformed into filaments with different cellulose contents using extrusion process. Optical analyses and dimensional measurements were carried out on filament samples. We found out that filaments are mostly homogenous and well structured. But for use on a 3D printer out methodology needs some finishing.

• Keywords: polyvinyl alcohol, microcrystalline cellulose, filaments, extrusion, powder mixing, granulation