Stabilized matrix-filled liquid radiation curable resin compositions for additive fabrication

摘要

Matrix-filled liquid radiation curable resin compositions for additive fabrication are described and claimed. Such resins include a cationically polymerizable component that is an aliphatic epoxide, a multifunctional (meth)acrylate component, a cationic photoinitiator, a free-radical photo initiator, and a matrix of inorganic fillers, wherein the matrix further constitutes prescribed ratios of at least one microparticle constituent and at least one nanoparticle constituent. Also described and claimed is a process for using the matrix-filled liquid radiation curable resins for additive fabrication to create three dimensional parts, and the three-dimensional parts made from the liquid radiation curable resins for additive fabrication.

主权项

1. A liquid radiation curable composition for additive fabrication comprising:
(a) a cationically polymerizable aliphatic epoxide; (b) a multifunctional (meth)acrylate component; (c) a cationic photoinitiator; (d) a free-radical photoinitiator; and (e) a filled matrix comprising a nanoparticle constituent comprising a plurality of inorganic nanoparticles, and a microparticle constituent comprising a plurality of inorganic microparticles; wherein the ratio by weight of the microparticle constituent to the nanoparticle constituent is from about 1:1 to about 12:1; and wherein the ratio of the average particle size of the inorganic microparticles in the microparticle constituent to the average particle size of the inorganic nanoparticles in the nanoparticle constituent is from about 2.41:1 to about 200:1 less than 200:1.