Material for three-dimensional modeling, filament for three-dimensional modeling, roll of the filament, and cartridge for three-dimensional printer

Abstract

Provided is a three-dimensional modeling material used for a fused deposition modeling three-dimensional printer. The three-dimensional modeling material has a multilayer structure and contains, in respective different layers, a thermoplastic resin (A) having a shear storage elastic modulus (G′) of 1.00×107 Pa or less as measured at 100° C. and 1 Hz and a thermoplastic resin (B) having a shear storage elastic modulus (G′) of more than 1.00×107 Pa as measured at 100° C. and 1 Hz.

1 - 14 . (canceled) 
     
     
         15 . A material extrusion-type three-dimensional printer comprising at least one nozzle, wherein the at least one nozzle has the function of ejecting a plurality of molten resins stacked one on another. 
     
     
         16 . The three-dimensional printer according to  claim 15 , wherein the at least one nozzle has a mechanism for stacking the plurality of molten resins to form a molten resin composite having a multilayer structure in a cross section orthogonal to a flow direction and then ejecting the molten resin composite. 
     
     
         17 . The three-dimensional printer according to  claim 15 , wherein the at least one nozzle includes a plurality of inlets for introducing the molten resins, a merging portion for merging the plurality of molten resins introduced from the plurality of inlets to form the molten resin composite having the multilayer structure in the cross section orthogonal to the flow direction, and an ejection port for ejecting the molten resin composite passing through the merging portion. 
     
     
         18 . A three-dimensional shaped object production method using a material extrusion process, the method including the step of supplying a plurality of resins to a nozzle, the step of stacking the plurality of molten resins inside the nozzle, and the step of ejecting the plurality of stacked molten resins from the nozzle. 
     
     
         19 . The three-dimensional shaped object production method according to  claim 18 , the method further including the step of stacking the plurality of molten resins inside the nozzle to form a molten resin composite having a multilayer structure in a cross section orthogonal to a flow direction. 
     
     
         20 . The three-dimensional shaped object production method according to  claim 18 , wherein at least two resins having respective different shear storage elastic moduli (G′) measured at 100° C. and 1 Hz are used. 
     
     
         21 . The three-dimensional shaped object production method according to  claim 18 , wherein at least two resins having respective different glass transition temperatures (Tg's) are used. 
     
     
         22 . The three-dimensional shaped object production method according to  claim 18 , wherein at least two resins having respective different crystallization heat quantities (ΔHc) are used. 
     
     
         23 . The three-dimensional shaped object production method according to  claim 18 , wherein at least two resins having respective different tensile storage elastic moduli (E′) measured at 25° C. and 10 Hz are used. 
     
     
         24 . The three-dimensional shaped object production method according to  claim 18 , wherein at least two resins containing respective different additives and/or an additive in different amounts are used. 
     
     
         25 . The three-dimensional shaped object production method according to  claim 20 , wherein a thermoplastic resin (C) having a shear storage elastic modulus (G′) of 1.00×10 7  Pa or less as measured at 100° C. and 1 Hz and a thermoplastic resin (D) having a shear storage elastic modulus (G′) of more than 1.00×10 7  Pa as measured at 100° C. and 1 Hz are contained in respective different layers. 
     
     
         26 . The three-dimensional shaped object production method according to  claim 25 , wherein a layer containing the thermoplastic resin (C) and a layer containing the thermoplastic resin (D) are stacked together and ejected from the nozzle. 
     
     
         27 . The three-dimensional shaped object production method according to  claim 25 , wherein the thermoplastic resin (C) and the thermoplastic resin (D) are crystalline resins, and the crystallization temperature (Tc) of the thermoplastic resin (C) in a cooling process during differential scanning calorimetry is lower than the crystallization temperature (Tc) of the thermoplastic resin (D) in a cooling process during differential scanning calorimetry. 
     
     
         28 . The three-dimensional shaped object production method according to  claim 25 , wherein the thermoplastic resin (C) and the thermoplastic resin (D) are amorphous resins, and the glass transition temperature (Tg) of the thermoplastic resin (C) is lower than the glass transition temperature (Tg) of the thermoplastic resin (D), and the glass transition temperature (Tg) of the thermoplastic resin (C) is 30° C. or higher. 
     
     
         29 . The three-dimensional shaped object production method according to  claim 25 , wherein the tensile storage elastic modulus (F) of the thermoplastic resin (C) is 100 MPa or less as measured at 100° C. and 10 Hz. 
     
     
         30 . The three-dimensional shaped object production method according to  claim 25 , wherein the tensile storage elastic modulus (F) of the thermoplastic resin (D) is more than 100 MPa as measured at 100° C. and 10 Hz. 
     
     
         31 . The three-dimensional shaped object production method according to  claim 25 , wherein the thermoplastic resin (C) is at least one selected from styrene-based resins, olefin-based resins, and polyester-based resins. 
     
     
         32 . The three-dimensional shaped object production method according to  claim 25 , wherein the thermoplastic resin (D) is at least one selected from styrene-based resins, olefin-based resins, and polyester-based resins. 
     
     
         33 . The three-dimensional shaped object production method according to  claim 25 , wherein the thermoplastic resin (C) and the thermoplastic resin (D) are both styrene-based resins or olefin-based resins.