Pregled raspoloživih tehnologija i biomaterijala pogodnih za brzu izradu prototipova

Mr Jelena Milovanović

Direct Metal Laser Sintering-DMLS (Direktno lasersko sinterovanje metala)

DMLS-EOSINT M270

Najvažniji parametri mašine:

Maksimalne dimenzije modela koji i zrađuje Brzina izrade (zavisi od materijala) Debljina sloja (zavisi od materijala) Tip lasera Precizna optika Brzina skeniranja (maximum) Promenljiv prečnik snopa Izvor napajanja Nitrogen generator

Dimenzije

se

Vrednosti

250 mm x 250 mm x 215 mm (uključujući radnu platformu) 2 - 20 mm/s 20 - 100 µm Yb fibre laser 200 W F-theta-lens, skener velike brzine 3.0 m/s 100 - 500 µm 32 A standardan sistem 2000 mm x 1000 mm x 1950 mm (B x D x H) Ta čnost 0.05mm

Materijali

• •

EOS Titanium Ti64 / Ti64ELI EOS CobaltChrome MP1

Electron Beam Melting

Materijali

• • • ASTM F75 CoCr legura Ti6Al4V Titanium legura Ti6Al4V ELI Titanium

Biomaterials for 3D printing

• • •

commercialized

materials.

composite powder

Bone replenishment is formed by mixing PMMA (polymethyl methacrylate) and fine granule of bone cement The ready bone cement is a compound consisting of 90 % of polymethylmetacrylate, (PMMA), the rest are mainly crystals of barium sulfate or Zirconium oxide .

Biomaterials for 3D printing

• • Three-dimensional printing (3DP) technique was used to fabricate scaffolds in combination with natural polymer and water based binder.

a unique blend of starch-based polymer powders (cornstarch, dextran and

gelatin) was developed for the 3DP process.

Biomaterials for 3D printing

• • • Used material: spaydried Hydroxyapatite(HA) granulate named V5 Besides the main component HA it contains polymeric additives to improve bonding and flowability As a binder we used Schelofix which consists of water soluble polymeric compounds

Biomaterials for 3D printing

• • • Used material: developed a powder mixture

comprising tetracalcium phosphate(TTCP) as reactive component and β-tricalcium phosphate (β –TCP) or calcium sulfate as biodegradable fillers,

Conventional 3DP eqipment can be used to print this material with an aqueous citric acid

solution as binder.

No organic solvents are needed in the printing process.

STUDY 5 - Biphasic Calcium Phosphate/Poly Dl-Lactide-Co-Glycolide Composite Biomaterial as Bone Substitute • • Prof dr Dragan Uskoković i Prof. dr Nenad Ignjatović Sinteza nanokristalnih i nanostrukturnih kalcijum fosfata i kompozita za rekonstrukciju koštanog tkiva predstavlja osnovno polje istraživanja dela grupe za nove materijale i procese Instituta tehničkih nauka Srpske akademije nauka i umetnosti (ITN SANU) u Beogradu.