Three-dimensional articles using nonlinear thermal polymerization

摘要

A method for building three-dimensional articles using a thermal polymerization process in provided. The articles are built by using a composition that includes a thermally polymerizable composition, a thermal initiator, and a nonlinear light-to-heat conversion material such as a reverse saturable dye. The article is built by the sequential exposure of adjacent voxels with a laser beam. Microlens arrays can be used to expose more than one voxel at a time.

主权项

1. A method for making a three-dimensional article comprising:
providing a composition comprising a plurality of voxels wherein the composition further comprises;
a polymerizable mixture;a thermal polymerization initiator; anda nonlinear light-to-heat conversion material, wherein the nonlinear light-to-heat conversion material is selected from fullerenes, metal nanoparticles, metal oxide nanoparticles, and combinations thereof; focusing a laser beam within a first voxel of the composition; and initiating polymerization of the composition within the first voxel, wherein at least a portion of the laser beam is absorbed by the nonlinear light-to-heat conversion material within the first voxel.