Pregled raspoloživih tehnologija i biomaterijala

pogodnih za brzu izradu prototipova

Mr Jelena Milovanović

Direct Metal Laser Sintering-DMLS(Direktno lasersko sinterovanje

metala)

DMLS-EOSINT M270Najvažniji parametri mašine: Vrednosti

Maksimalne dimenzije modela koji se

izrađuje

250 mm x 250 mm x 215 mm (uključujući

radnu platformu)

Brzina izrade (zavisi od materijala) 2 - 20 mm/s

Debljina sloja (zavisi od materijala) 20 - 100 µm

Tip lasera Yb fibre laser 200 W

Precizna optika F-theta-lens, skener velike brzine

Brzina skeniranja (maximum) 3.0 m/s

Promenljiv prečnik snopa 100 - 500 µm

Izvor napajanja 32 A

Nitrogen generator standardan

Dimenzije

sistem 2000 mm x 1000 mm x 1950 mm (B x D

x H)

Tačnost 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 composite powder materials.

•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.