US 12,545,766 B2 · Curable polymer resins for 3D-printable hierarchical nanoporous foams and aerogels

Abstract

In one embodiment, a mixture includes a polyfunctional monomer having at least one functional group amenable to polymerization, a porogen, and a polymerization initiator. In another embodiment, a product includes a porous three-dimensional structure formed by additive manufacturing, where the porous three-dimensional structure has ligaments arranged in a geometric pattern, the ligaments defining pores therebetween. The pores have an average diameter greater than about 10 microns, where an average length scale of the ligaments is greater than 100 nanometers. The ligaments are nanoporous, where at least 80% of a volume measured according to outer dimensions of the porous three-dimensional structure corresponds to the pores.

Claims23

Dependent claims

A mixture comprising:

a monomer having at least one functional group amenable to polymerization;
a porogen;
a polymerization initiator;
and
a polymerization inhibitor present at an effective amount to prevent polymerization of an unirradiated portion of the mixture after laser irradiation of a portion of the mixture,
wherein the mixture is configured to undergo phase segregation upon the laser irradiation whereby the monomer transforms from a liquid to a self-supporting polymeric solid and the porogen remains a liquid within nanopores of the self-supporting polymeric solid,
wherein the porogen is present in an effective amount to cause the self-supporting polymeric solid to have a nanoporosity,
wherein the polymerization inhibitor is present in the mixture in a concentration greater than 50,000 ppm.

5 more elements

Dependencies are inferred from the claim text.

Curable polymer resins for 3D-printable hierarchical nanoporous foams and aerogels

Life of this patent

Curable polymer resins for 3D-printable hierarchical nanoporous foams and aerogels

Life of this patent

Abstract

Claims23