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allied
academies
November 22-23, 2018 | Paris, France
Journal of Materials Science and Nanotechnology | Volume: 2
Materials Physics and Materials Science
International Conference on
Obtaining of graphene/polymer composites by hydrosilylation reaction for SLA printer
Natia J
Vekua Sukhumi Institute of Physics and Technology, Georgia
T
hree-dimensional (3D) printing is often considered
synonymous with additive manufacturing. Several types
of 3D printers are known where we usually used polymers
are. Stereolithography (SLA) employs a single beam laser to
polymerize or crosslink a photopolymer resin. By drawing
on the liquid photopolymer resin with a light beam, thin
layers of polymer are stacked layer by layer. Elastomer
based on polydimethysiloxanes (PDMS) are important
class of materials, because of properties such as chemical
inertness, flexibility, optical transparence, also they have a
very low surface tension (20.4mN/m) and glass transition
temperatures (146K). it is possible to print a support
material that holds the PDMS prepolymer in place until it
can be cured by UV light using a photoactive cross-linking
agent. It is possible to graft photoactive group on PDMS
backbone and obtain new UV curable polymer. The aim of
presented work is obtaining of photopolymers based on
PDMS. For purpose, we have conducted hydrosilylation
reaction of polymethylhydrosiloxane (PMHS) with allyl
acrylate and vinyltriethoxysilane in the presence Karstedt’s
catalyst in Toluene. Obtained polymer is liquid which are well
soluble in organic solvents with specific viscosity ηsp � 0.4.
The end of reaction was tested by FTIR, where peak at 1260
cm
-1
disappears which belongs to Si-H bonds. After this the
polymer distilled in vacuum, cross-linking agent was adding
about 1% and curried by UV during 1h.
e:
n.jalagonia@sipt.org.ge