Resin composition, filament and resin powder for three-dimensional printer, and shaped object and production process therefor

Abstract

Provided is a resin composition, a filament and resin powder for a three-dimensional printer, a shaped object, and a production method for the shaped object, all of which make it easy to produce a shaped object and can improve, in shaping using a three-dimensional printer, the resistance to delamination of the shaped object and the resistance to warpage and shrinkage of the shaped object. A resin composition contains: inorganic fibers having an average fiber length of 1 μm to 300 μm and an average aspect ratio of 3 to 200; and a thermoplastic resin and serves as a shaping material for a three-dimensional printer.

1 . A filament for a fused deposition modeling-based three-dimensional printer, the filament being made of a resin composition containing: inorganic fibers having an average fiber length of 1 μm to 300 μm and an average aspect ratio of 3 to 200; and a thermoplastic resin, the resin composition serving as a shaping material for a three-dimensional printer. 
     
     
         2 . The filament for a fused deposition modeling-based three-dimensional printer according to  claim 1 , wherein the inorganic fibers have a Mohs hardness of 5 or less. 
     
     
         3 . The filament for a fused deposition modeling-based three-dimensional printer according to  claim 1 , wherein the inorganic fibers are at least one selected from the group consisting of potassium titanate and wollastonite. 
     
     
         4 . The filament for a fused deposition modeling-based three-dimensional printer according to  claim 1 , wherein a content of the inorganic fibers is 1% by mass to 40% by mass in a total amount of 100% by mass of the resin composition. 
     
     
         5 . A resin powder for a powder bed fusion-based three-dimensional printer, the resin powder being made of a resin composition containing: inorganic fibers having an average fiber length of 1 μm to 300 μm and an average aspect ratio of 3 to 200; and a thermoplastic resin, the resin composition serving as a shaping material for a three-dimensional printer. 
     
     
         6 . The resin powder for a powder bed fusion-based three-dimensional printer according to  claim 5 , wherein the inorganic fibers have a Mohs hardness of 5 or less. 
     
     
         7 . The resin powder for a powder bed fusion-based three-dimensional printer according to  claim 5 , wherein the inorganic fibers are at least one selected from the group consisting of potassium titanate and wollastonite. 
     
     
         8 . The resin powder for a powder bed fusion-based three-dimensional printer according to  claim 5 , wherein a content of the inorganic fibers is 1% by mass to 40% by mass in a total amount of 100% by mass of the resin composition. 
     
     
         9 . A shaped object shaped from a resin composition containing: inorganic fibers having an average fiber length of 1 μm to 300 μm and an average aspect ratio of 3 to 200; and a thermoplastic resin with a three-dimensional printer. 
     
     
         10 . The shaped object according to  claim 9 , wherein the inorganic fibers have a Mohs hardness of 5 or less. 
     
     
         11 . The shaped object according to  claim 9 , wherein the inorganic fibers are at least one selected from the group consisting of potassium titanate and wollastonite. 
     
     
         12 . The shaped object according to  claim 9 , wherein a content of the inorganic fibers is 1% by mass to 40% by mass in a total amount of 100% by mass of the resin composition. 
     
     
         13 . A shaped object shaped from the filament according to  claim 1  with a fused deposition modeling-based three-dimensional printer. 
     
     
         14 . A shaped object shaped from the resin powder according to  claim 5  with a powder bed fusion-based three-dimensional printer.