INK FOR PRODUCING SHAPED ARTICLE, SHAPED ARTICLE, AND THREE-DIMENSIONAL SHAPING APPARATUS
An ink for producing a shaped article includes a photopolymerizable compound, and 5% by volume to 95% by volume of air bubbles relative to the total volume of the ink.
1 . An ink for producing a shaped article, comprising:
a photopolymerizable compound; and
5% by volume to 95% by volume of air bubbles relative to the total volume of the ink.
2 . The ink for producing a shaped article according to claim 1 , wherein a number-average diameter of the air bubbles is within a range of 0.01 μm to 200 μm.
3 . The ink for producing a shaped article according to claim 1 , wherein a number-average diameter of the air bubbles is within a range of 1 μm to 200 μm.
4 . The ink for producing a shaped article according to claim 1 , wherein the viscosity at 25° C. of the ink for producing a shaped article is within a range of 1 mPa·s to 10,000 mPa·s
5 . The ink for producing a shaped article according to claim 1 , wherein a viscosity at 25° C. of the ink for producing a shaped article is within a range of 10 mPa·s to 1,000 mPa·s
6 . The ink for producing a shaped article according to claim 1 , wherein the air bubbles contain inert gas.
7 . A three-dimensional shaping apparatus comprising:
an injection part that contains the ink for producing a shaped article according to claim 1 and injects the ink; and
a light irradiating part that irradiates the ejected ink with light to cure the ink.
8 . A three-dimensional shaped article comprising:
a resin;
5% by volume or more and 95% by volume or less of air bubbles relative to a total volume of the shaped article; and
a region where at least one of a diameter and a density of the air bubbles increases or decreases along a depth direction from the surface.
9 . The three-dimensional shaped article according to claim 8 , wherein a number-average diameter of the air bubbles is within a range of 0.01 μm to 200 μm.
10 . The three-dimensional shaped article according to claim 8 , wherein the air bubbles in the region have a closed cell structure or an open cell structure.
11 . The three-dimensional shaped article according to claim 8 , wherein a shock absorption rate is within a range of 70% to 95%.
12 . The three-dimensional shaped article according to claim 8 , wherein an Asker C hardness is within a range of 10 degrees to 100 degrees.