Effect of polymeric material on 3D print quality : bachelor thesis

Napredna tehnika koja omogućava stvaranje čvrstih predmeta iz digitalnog zapisa je tehnika trodimenzionalnog ispisa. Ta tehnika osim što uvelike može olakšati svakodnevni život, može postići veliku preciznost i geometrijsku točnost zadanih proporcija. Kod svake nove tehnike, tako i kod ove, težnja je smisliti procedure gdje će proizvodi imati veliku kvalitetu a troškovi procesa biti što manji. Upravo je to cilj ovog završnog rada: ispitati kvalitetu trodimenzionalnog ispisa za različite polimerne materijale (polilaktid-PLA, akrilonitril/butadien/stiren-ABS, kopoliester-CPE). Kvaliteta ispisa se temelji na ispitivanju vodonepropusnosti pri različitim brzinama ispisa (0,06; 0,10 i 0,20 mm 3 /s). Korišten je 3D pisač Ultimaker 3. Svi ispitivani materijali podvrgnuti su termogravimetrijskoj analizi (TGA) i diferencijalnoj pretražnoj kalorimetriji (DSC) kako bi se odredila toplinska svojstva samih polimera. Nakon ispisa, površina je promatrana polarizacijskim mikroskopom. Temeljem ispitivanih parametara utvrđeno je da je kopoliester najkvalitetniji materijal za trodimenzionalni ispis.Advanced technique that allows for the creation of solid materials from digital writing is the technique of three-dimensional printing. Besides from great simplification of everyday life, this technique can accomplish great precision and geometrical accuracy of designated proportions. As with every new technique, the aim of this one is to develop procedures that will ensure manufacture of high quality products and reduction of the production costs. The main goal of this bachelor thesis is, therefore, the analysis of the quality of three-dimensional printing of various polymeric materials (PLA, ABS, CPE). The quality of printing is based on the watertightness analysis at various speeds of printing (0,06, 0,10, 0,20 mm 3 /s). The 3D printing machine that has been used is Ultimaker 3. All of the analyzed polymeric materials have been submitted to thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) in order to determine the thermal characteristics of the polymer. After printing, the surface has been examined under the polarizing microscope. On the basis of the observed, it is concluded that copolyester has the best quality for 3D printing