RADIATION-CURABLE LIQUID RESIN COMPOSITION FOR ADDITIVE FABRICATION AND THREE-DIMENSIONAL OBJECT MADE THEREFROM

摘要

A radiation-curable liquid resin composition for additive fabrication that possesses good storage stability and is capable of being cured into a three- dimensional object which is colorless and transparent and has excellent heat resistance is disclosed. The radiation-curable liquid resin composition for additive fabrication comprises (A) a compound having a structure represented by formula (1), (B) a cationically-polymerizable compound other than (A), (C) a radical-polymerizable compound, (D) an onium salt consisting of a monovalent sulfonium ion having an aromatic structure and an anion represented by (PR3 6)-, and (E) a radical polymerization initiator, wherein the content of divalent sulfonium salt having an aromatic structure is at most 1/20 (mass ratio) of the content of the aforementioned component (D).