High volumetric loading of particles in uv curable photoresins for light based additive manufacturing techniques
AssigneeThe Charles Stark Draper Laboratory, Inc.
InventorKasia Oleske
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Abstract
A photocurable resin system including a resin chemistry and a particle with UV-absorbing properties is described, where the particle may include a modified silane attached to a surface of the particle via a free oxide group. The modified silane may include a functional arm with a photoinitiator group attached thereto. The resin chemistry may include a diacrylate resin; a crosslinker; a reactive diluent; and a photoinitiator. The photocurable resin system may include a high volumetric loading of particles with sufficient curing to form a rigid polymer.
Claims20
A particle comprising:
- a surface with a free oxide surface group thereon;
- and
- a modified silane attached to the free oxide surface group;
- wherein the modified silane comprises a functional arm attached to a photoinitiator group.
A method of forming a UV-absorbing particle, the method comprising:
- forming a modified silane with an attached photoinitiator group;
- and
- attaching the modified silane onto a surface of a particle.
A method of forming a photocurable resin system, the method comprising:
- forming a modified silane with an attached photoinitiator group;
- attaching the modified silane onto a surface of a particle to form a functionalized particle;
- and
- adding the functionalized particle to a resin chemistry.
Dependencies are inferred from the claim text.