JP6891394B2 - Manufacturing method of three-dimensional model - Google Patents

Description

The present invention relates to a method for producing a three-dimensional model made of a sintered body of glass powder.

Conventionally, a method of laminating resin materials and the like to obtain a three-dimensional model has been known. For example, various methods such as a stereolithography method, a powder bed fusion sintering method, and a Fused deposition modeling (FDM) method have been proposed and put into practical use (see, for example, Patent Document 1).

Among them, the stereolithography method is excellent in delicate modeling and accurate size expression, and is widely used. The stereolithography method produces a three-dimensional model as follows. First, a modeling stage is provided in a tank filled with a photocurable resin, and the photocurable resin on the modeling stage is irradiated with active energy rays such as an ultraviolet laser to form a cured layer having a desired pattern. When one cured layer is formed in this way, the modeling stage is lowered by one layer, an uncured photocurable resin is introduced onto the cured layer, and the photocurable resin is similarly irradiated with active energy rays. A new hardened layer is piled up on the hardened layer. By repeating this operation, a predetermined three-dimensional model is obtained. Further, in the powder sintering method, a modeling stage is provided in a tank filled with resin, metal, ceramics or glass powder, the powder on the modeling stage is irradiated with active energy rays, and a desired pattern is cured by softening and deformation. It forms a layer. The three-dimensional model obtained by such a method is required to have high mechanical strength depending on the application. Patent Document 1 describes that the mechanical strength (mechanical rigidity) of the obtained three-dimensional model is improved by containing the inorganic filler particles in the resin composition.

Derived from the above method, a resin composition containing glass powder is used to once prepare a three-dimensional precursor, and then the three-dimensional precursor is heat-treated to remove the curable resin (defatting). At the same time, a method of producing a three-dimensional model by sintering glass powder has also been proposed (see, for example, Patent Document 2). In this way, it becomes possible to manufacture a three-dimensional model having various shapes made of a sintered body of glass powder.

Japanese Unexamined Patent Publication No. 7-26060 Japanese Unexamined Patent Publication No. 2012-250022

The three-dimensional model obtained in Patent Document 2 tends to have pores easily remaining inside due to the removal of the curable resin, and tends to be inferior in denseness. As a result, there is a problem that the mechanical strength of the three-dimensional model is inferior, or the pores become a scattering factor, the light transmittance is lowered, and the appearance is inferior.

In view of the above, it is an object of the present invention to provide a method capable of producing a three-dimensional model having excellent density, which is made of a sintered body of glass powder.

The method for producing a three-dimensional model of the present invention is a step of irradiating a resin composition containing a curable resin and a glass powder with active energy rays to cure the curable resin to obtain a precursor, and heat-treating the precursor. This is a method for producing a three-dimensional model, which comprises a step of removing the curable resin and sintering the glass powder, characterized in that the glass powder is sintered in a reduced pressure atmosphere.

As described above, in the method for producing a three-dimensional model of the present invention, a precursor is prepared using a resin composition containing a curable resin and a glass powder, and then the precursor is heat-treated in a reduced pressure atmosphere to produce a glass powder. Sinter. By doing so, the bubbles remaining after the curable resin is removed are easily released to the outside, and the denseness of the sintered body is easily improved. Therefore, it is possible to improve the mechanical strength and the light transmittance of the three-dimensional model.

The method for producing a three-dimensional model of the present invention is a step of selectively irradiating a layer composed of a resin composition containing a curable resin and a glass powder with active energy rays to form a cured layer having a predetermined pattern, and curing. After forming a new resin composition layer on the layer, the resin composition layer is irradiated with active energy rays to form a new cured layer having a predetermined pattern continuous with the cured layer, and a predetermined three-dimensional model is obtained. It is a method for producing a three-dimensional model, which comprises a step of repeatedly laminating a cured layer until it is produced to prepare a precursor, and a step of removing a curable resin by heat-treating the precursor and sintering a glass powder. , The glass powder is sintered in a reduced pressure atmosphere. In this way, it is possible to easily produce a three-dimensional model having a complicated shape.

In the method for producing a three-dimensional model of the present invention, it is preferable that the resin composition contains 1 to 50% of curable resin and 50 to 99% of glass powder by volume. In this way, it is possible to improve the fineness of the three-dimensional model after sintering.

In the method for producing a three-dimensional model of the present invention, an ultraviolet curable resin can be used as the curable resin.

In the method for producing a three-dimensional model of the present invention, the average particle size of the glass powder is preferably 1 to 500 μm. By doing so, it becomes easy to obtain a dense sintered body.

The method of manufacturing a three-dimensional object of the present invention, the glass powder is in weight% as a _{composition, SiO 2 30~85%, Al 2} O 3 0~30%, B 2 O 3 0~50%, Li 2 O + Na 2 It preferably contains O + K ₂ O 0 to 10%. In this way, it becomes easy to obtain a three-dimensional model having excellent mechanical strength and chemical durability.

In the method for producing a three-dimensional model of the present invention, it is preferable that the glass powder is sintered within ± 100 ° C., which is the softening point of the glass powder. In this way, it becomes easy to obtain a precise three-dimensional model.

According to the present invention, it is possible to produce a three-dimensional model having excellent density, which is made of a sintered body of glass powder.

The curable resin used in the present invention may be either a photocurable resin or a thermosetting resin, and can be appropriately selected depending on the molding method to be adopted. For example, when the stereolithography method is used, a liquid photocurable resin may be selected, and when the powder sintering method is adopted, a powdery thermosetting resin may be selected.

As the photocurable resin, various resins such as a polymerizable vinyl compound and an epoxy compound can be selected. Further, monomers and oligomers of monofunctional compounds and polyfunctional compounds are used. These monofunctional compounds and polyfunctional compounds are not particularly limited. Typical examples of photocurable resins are given below.

Examples of the monofunctional compound of the polymerizable vinyl compound include isobornyl acrylate, isobornyl methacrylate, dincropentenyl acrylate, borneyl acrylate, bornyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, and propylene glycol. Examples thereof include acrylate, vinylpyrrolidone, acrylamide, vinyl acetate and styrene. Examples of the polyfunctional compound include trimethyl propanetriacrylate, EO-modified trimethylpropantriacrylate, ethylene glycol diacrylate, tetraethylene glycol diacrylate, polyethylene glycol diacrylate, 1,4-butanediol diacrylate, and 1,6. -Hexanediol diacrylate, neopentyl glycol diacrylate, dicyclopentenyl diacrylate, polyester diacrylate, diallyl phthalate and the like can be mentioned. One or more of these monofunctional compounds and polyfunctional compounds can be used alone or in the form of a mixture.

As the polymerization initiator of the vinyl compound, a photopolymerization initiator is used. Photopolymerization initiators include 2,2-dimethoxy-2-phenylacetophenone, 1-hydroxycyclohexylphenylketone, acetophenone, benzophenone, xantone, fluorenone, benzaldehyde, fluorene, anthraquinone, triphenylamine, carbazole, 3-methylacetophenone, Michler ketone and the like can be mentioned as typical examples, and one or a combination of two or more of these initiators can be used. If necessary, a sensitizer such as an amine compound can be used in combination. The amount of these polymerization initiators used is preferably 0.1 to 10% by mass, respectively, with respect to the vinyl compound.

Examples of the epoxy compound include hydrogenated bisphenol A diglycidyl ether, 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate, and 2- (3,4-epoxycyclohexyl-5,5-spiro-3,4). -Epoxy) Cyclohexane-m-dioxane, bis (3,4-epoxycyclohexylmethyl) adipate and the like can be mentioned. When these epoxy compounds are used, an energy-active cation initiator such as triphenylsulfonium hexafluoroantimonate can be used.

Further, a leveling agent, a surfactant, an organic polymer compound, an organic plasticizer and the like may be added to the photocurable resin as needed.

The decomposition temperature of the curable resin used in the present invention is preferably 600 ° C. or lower, 550 ° C. or lower, and particularly preferably 500 ° C. or lower. If the decomposition temperature of the curable resin is too high, it is difficult to remove the curable resin by heat treatment, so that the resulting three-dimensional model tends to be inferior in fineness.

Is not particularly limited as glass powder, for example, _{SiO 2 -B 2 O 3 -R '} 2 O (R' is an alkali metal element) based _{glass, SiO 2 -Al 2 O 3 -RO} (R is an alkaline earth metal element ) based _{glass, SiO 2 -Al 2 O 3 -R} '2 O-RO -based _{glass, SiO 2 -Al 2 O 3 -B} 2 O 3 -R' 2 O -based _glass, SiO ₂ -Al ₂ O 3 -B _{2 O 3 -R '2 O-} RO -based glass, _{SiO 2} -R' 2 O-based glass, a _{SiO 2} -R '2 O-RO-based glass may be used.

Specific examples of the composition of the glass powder is in weight% as a _{composition, SiO 2 30~85%, Al 2} O 3 0~30%, B 2 O 3 0~50%, Li 2 O + Na 2 O + K 2 O 0~ Those containing 10% can be mentioned. It is preferable to use a glass powder having this composition because it is easy to obtain a three-dimensional model having excellent mechanical strength and chemical durability. The reason for limiting each component as described above will be described below. In the following description of the content of each component, "%" represents mass% unless otherwise specified.

SiO ₂ is a component that forms a glass skeleton, easily improves chemical durability, and has an effect of suppressing devitrification. It also has the effect of increasing mechanical strength. The content of SiO ₂ is preferably 30 to 85%, 40 to 75%, and particularly preferably 45 to 70%. If the amount of SiO ₂ is too small, it becomes difficult to obtain the above effect. In addition, the difference between the crystallization temperature and the softening temperature tends to be small. As a result, as will be described later, crystals are likely to precipitate at the time of sintering, which hinders the softening flow of the glass powder, so that the denseness is likely to be lowered and bubbles at the glass grain boundaries are difficult to escape. On the other hand, if the amount of SiO ₂ is too large, the softening point tends to be high and the moldability tends to be poor.

Al ₂ O ₃ is a vitrification stabilizing component. It also has a high effect of improving chemical durability. The content of Al ₂ O ₃ is preferably 0 to 30%, 2.5 to 25%, and particularly preferably 5 to 20%. If _{there is too much Al 2} O ₃ , the softening point rises and it becomes difficult to mold. In addition, the meltability and chemical durability are likely to decrease, and devitrification is likely to occur.

B ₂ O ₃ is a component that forms a glass skeleton. In addition, it is easy to improve the chemical durability and has the effect of suppressing devitrification. The content of B ₂ O ₃ is preferably 0 to 50%, 2.5 to 40%, and particularly preferably 5 to 30%. If _{the content of B 2} O ₃ is too large, the meltability tends to decrease, and it becomes difficult to soften during molding, which tends to make production difficult.

Li ₂ O, Na ₂ O and K ₂ O are components that lower the softening point and facilitate molding. The content of Li ₂ O + Na ₂ O + K ₂ O is preferably 0 to 10%, 0.01 to 10%, 0.1 to 9%, 0.5 to 8%, and particularly preferably 1 to 7%. If _{there is too much Li 2} O + Na ₂ O + K ₂ O, the chemical durability tends to decrease. In addition, the coefficient of thermal expansion becomes large, and the thermal shock resistance of the obtained three-dimensional model tends to decrease. The content of each component of Li ₂ O, Na ₂ O and K ₂ O is also preferably in the above range.

In addition to the above components, the glass powder may contain the following components.

MgO, CaO, SrO, BaO and ZnO are components that reduce the viscosity and improve the meltability without significantly reducing the chemical durability. The total content of these components is preferably 0 to 50%, 0.1 to 50%, 1 to 40%, and particularly preferably 2 to 30%. If the content of these components is too high, devitrification is likely to occur.

P ₂ O ₅ is a component that forms a glass skeleton, and easily improves light transmittance and chemical durability, and also has an effect of suppressing devitrification. The content of P ₂ O ₅ is preferably 0 to 50%, 2.5 to 40%, and particularly preferably 5 to 30%. If _{there is too much P 2} O ₅ , the meltability tends to decrease. In addition, the weather resistance tends to decrease.

The average particle size D ₅₀ of the glass powder is preferably 1 to 500 μm, 1.5 to 100 μm, 2 to 50 μm, and particularly preferably 2.5 to 20 μm. The smaller the average particle size D ₅₀ of the glass powder is, the higher the filling rate can be, but the fluidity of the curable resin is lowered and the moldability is likely to be deteriorated. Further, bubbles (interfacial bubbles) existing at the interface between the glass powder and the curable resin are difficult to be removed, and bubbles tend to remain in the obtained sintered body to cause a decrease in denseness. On the other hand, it packing ratio the larger the average particle diameter D ₅₀ of the glass powder is likely to decrease, denseness of the sintered body tends to decrease.

In the present invention, the average particle diameter D ₅₀ indicates a 50% volume cumulative diameter of the primary particles in terms of median diameter, and refers to a value measured by a laser diffraction type particle size distribution measuring device.

The light transmittance of the glass powder at a wavelength of 400 nm is preferably 5% or more, 10% or more, 30% or more, 50% or more, and particularly preferably 70% or more. In particular, in the case of the stereolithography method, if the light transmittance of the glass powder at a wavelength of 400 nm is too low, it becomes difficult for the active energy rays to penetrate into the resin composition and it becomes difficult to cure.

The specific surface area of the glass particles 0.1~3.5m ² /g,0.5~3.2m ² / g, it is particularly preferably 0.75~3m ² / g. If the specific surface area of the glass particles is too small, the particle size tends to be large, so that the filling rate of the glass particles in the resin composition tends to decrease. On the other hand, if the specific surface area of the glass particles is too large, the fluidity of the resin composition is lowered, the moldability is deteriorated, and the denseness of the sintered body is likely to be lowered.

The shape of the glass particles constituting the glass powder is preferably substantially spherical. By doing so, since the specific surface area of the glass powder is reduced, it is possible to suppress an increase in the viscosity of the resin composition and improve the moldability. In addition, the denseness of the sintered body is likely to be improved. The substantially spherical glass particles can be produced, for example, by crushing bulk glass and then performing flame polishing (fire polishing).

The softening point of the glass powder is preferably 1200 ° C. or lower, 1000 ° C. or lower, and particularly preferably 900 ° C. or lower. If the softening point of the glass powder is too high, it becomes difficult to obtain a dense sintered body. In addition, spheroidization by flame polishing tends to be difficult. On the other hand, the lower limit of the softening point of the glass powder is not particularly limited, but in reality, it is 250 ° C. or higher, particularly 300 ° C. or higher.

The difference between the crystallization temperature and the softening point of the glass powder (crystallization temperature-softening point) is preferably 10 ° C. or higher, 50 ° C. or higher, 100 ° C. or higher, and particularly preferably 200 ° C. or higher. If the difference between the crystallization temperature and the softening point is too small, crystals are likely to precipitate during sintering, which hinders the softening flow of the glass powder, or bubbles are likely to remain at the glass grain boundaries, resulting in reduced denseness. It will be easier. The "crystallization temperature" refers to the obtained crystallization peak temperature measured by a differential thermal analyzer (DTA).

The surface of the glass powder is preferably treated with a silane coupling agent. Treatment with a silane coupling agent improves the compatibility between the glass powder and the curable resin, and makes it easier to improve the moldability. In addition, the weather resistance of the glass powder can be improved. As the silane coupling agent, for example, aminosilane, epoxysilane, acrylicsilane and the like are preferable. The silane coupling agent may be appropriately selected depending on the curable resin to be used. For example, when a vinyl-based unsaturated compound is used as the photocurable resin, the acrylic silane-based silane coupling agent is most preferable, and the epoxy-based compound is used. When used, it is desirable to use an epoxy silane-based silane coupling agent.

A resin composition is obtained by mixing the above curable resin and glass powder. The ratio of each component in the resin composition is preferably 1 to 50% by volume of the curable resin and 50 to 99% by glass powder. If the proportion of the curable resin is too small (the proportion of the glass powder is too large), the binding property of the glass powder is poor and it tends to be difficult to form a precursor. On the other hand, if the proportion of the curable resin is too large (the proportion of the glass powder is too small), pores are likely to remain in the three-dimensional model after firing, and the density tends to be poor. The preferred range of the content of the resin composition is 5 to 48% by volume, 10 to 45%, and particularly 20 to 40%. The preferable range of the content of the glass powder is 52 to 95% by volume, 55 to 90%, and particularly 60 to 80%.

Next, a method for producing a three-dimensional model of the present invention using the above resin composition will be described.

First, the obtained resin composition is irradiated with active energy rays to cure the curable resin to prepare a precursor. Hereinafter, a specific example of a method for producing a precursor using a resin composition containing a photocurable resin will be described.

First, a modeling stage is provided in a tank filled with the resin composition, and the upper surface of the stage is positioned so as to have a desired depth (for example, about 0.2 mm) from the liquid surface. By doing so, the resin composition layer is prepared on the stage.

Next, the resin composition layer is irradiated with an active energy ray, for example, an ultraviolet laser to cure the photocurable resin to form a cured layer having a predetermined pattern. As the active energy ray, laser light such as visible light or infrared light can be used in addition to ultraviolet light.

Subsequently, a new resin composition layer is introduced onto the formed cured layer. For example, the resin composition can be introduced onto the cured layer by lowering the modeling stage by one layer.

Then, the new resin composition layer introduced onto the cured layer is irradiated with active energy rays to form a new cured layer continuous with the cured layer.

By repeating the above operation, the cured layers are continuously laminated to obtain a precursor having a predetermined shape. By designing the dimensions and shape of the precursor in consideration of the amount of volume shrinkage in the subsequent heat treatment step, the dimensional accuracy of the obtained three-dimensional model can be ensured.

Next, the curable resin is removed by heat-treating the obtained precursor, and the glass powder is sintered. Here, it is preferable that the precursor is first heat-treated (defatted) at the decomposition temperature of the curable resin, then heated to a high temperature and heat-treated at the sintering temperature of the glass powder (two-step firing). By doing so, the curable resin can be easily removed from the precursor, and the denseness of the sintered body can be easily improved. Solventing is performed at the decomposition temperature of the curable resin described above. The heat treatment for sintering the glass powder is preferably performed within ± 100 ° C. of the softening point of the glass powder, particularly within ± 50 ° C. of the softening point. If the heat treatment temperature for sintering the glass powder is too low, the sintering becomes insufficient and the compactness of the sintered body tends to decrease. On the other hand, if the heat treatment temperature for sintering the glass powder is too high, the glass powder softens and flows excessively, making it difficult to obtain a three-dimensional model having a desired shape.

Further, in the present invention, sintering is performed for the glass powder as described above under reduced atmosphere (less than 1 atm ^{(1.013 × 10 5 Pa))} . If the atmospheric pressure at the time of sintering the glass powder is too high, it becomes difficult for the bubbles remaining after removing the curable resin to be released to the outside, and the compactness of the sintered body tends to decrease. Atmosphere during sintering of the glass powder 0.9 × ¹⁰ 5 Pa or less, 1000 Pa or less, 400 Pa or less, more preferably 200Pa or less. The lower limit of the atmosphere at the time of sintering the glass powder is not particularly limited, but in reality, it is 0.001 Pa or more, particularly 0.01 Pa or more.

It is necessary to at least sinter the glass powder in a reduced pressure atmosphere, but the step of removing the curable resin may also be performed in a reduced pressure atmosphere. In that case, the atmospheric pressure is preferably in the above range.

The three-dimensional model obtained by the production method of the present invention is excellent in fineness. Specifically, the sintering density of the three-dimensional model is preferably 95% or more, 97% or more, and particularly preferably 99% or more.

According to the manufacturing method of the present invention, a three-dimensional shaped object made of glass having a complicated shape can be easily manufactured. For example, a dendrite-shaped (three-dimensional network-shaped) molded product can be used as an optical filter. Here, by appropriately adjusting the size of the mesh, it can function as a wavelength filter targeting desired wavelengths from visible to infrared.

Hereinafter, the present invention will be described based on examples, but the present invention is not limited to the following examples.

Table 1 shows Examples 1 and 2 of the present invention and comparative examples.

(Example 1)
(Making glass powder)
By mass%, SiO ₂ 65.1%, B ₂ O ₃ 8.8%, Al ₂ O ₃ 5.9%, BaO 2.9%, ZnO 4.4%, Li ₂ O 1.5%, Na _The raw materials were prepared so as to have a glass composition of 2 O 5.7% and K ₂ O 5.7%, melted at 1500 ° C. for 6 hours, and then molded into a film. By pulverizing the film-shaped glass, _{a glass powder having an average particle size (D 50} ) of 5 μm (pulverized product; softening point 692 ° C., crystallization temperature 1000 ° C. or higher) was obtained. The softening point of the glass powder is a value measured by the fiber elongation method.

(Preparation of photocurable resin)
First, isophorone diisocyanate, morpholine acrylamide and dibutyl tin dilaurate were heated in an oil bath. A solution prepared by uniformly mixing and dissolving methylhydroquinone in glycerin monomethacrylate monoacrylate was added, and the mixture was stirred and mixed for reaction. A reaction product containing urethane acrylate oligomer and morpholine acrylamide was produced by adding 4 mol adducts of pentaerythritol propylene oxide (1 mol adduct of propylene oxide added to each of the 4 hydroxyl groups of pentaerythritol) and reacting them.

Morpholine acrylamide and dicyclopentanyl diacrylate were added to the obtained urethane acrylate oligomer and morpholine acrylamide. Further, 1-hydroxycyclohexylphenyl ketone (photopolymerization initiator) was added to obtain a colorless and transparent acrylic photocurable resin.

(Making a three-dimensional model)
The glass powder and the photocurable resin obtained above are mixed so as to have a ratio of 70% by volume of the glass powder and 30% by volume of the photocurable resin, and kneaded with three rollers to form a paste-like resin. The composition was obtained. The obtained resin composition was poured into a Teflon (registered trademark) inner size 30 mm □ mold. Then, the resin composition was cured by irradiating with light having a wavelength of 500 mW and a wavelength of 364 nm, and then annealed at 80 ° C. to obtain a precursor.

The obtained precursor was degreased by heat treatment at 600 ° C. under reduced pressure (2 Pa) for 1 hour, and then heat-treated at 692 ° C. for 10 minutes to sinter the glass powder to obtain a plate-shaped three-dimensional model.

The sintering density, light transmittance and bending strength of the obtained three-dimensional model were measured as follows. The results are shown in Table 1.

The sintering density is a value obtained from the formula (measured density / theoretical density) × 100 (%) based on the measured density and the theoretical density measured by the Archimedes method.

The light transmittance was measured using a spectrophotometer for a sample having a thickness of 1 mm. The measurement was carried out in the wavelength range of 400 to 800 nm, and the maximum light transmittance is shown in the table.

The bending strength was measured according to JIS R1601 using a sample processed to 4 mm × 40 mm × 3 mm.

(Example 2)
The glass powder obtained in Example 1 was put into a flame of an oxygen burner to form a spherical shape. Then, by classification, a glass powder (spheroidized product) having an _{average particle size (D 50) of 5 μm was obtained.} Using the obtained glass powder, a three-dimensional model was produced in the same manner as in Example 1, and each characteristic was measured. The results are shown in Table 1.

(Comparison example)
In Example 1, a three-dimensional model was produced by the same method as in Example 1 except that the sintering atmosphere of the glass powder was set to atmospheric pressure (1 atm), and each characteristic was measured. The results are shown in Table 1.

As is clear from Table 1, in Examples 1 and 2 in which the glass powder was sintered in a reduced pressure atmosphere, the sintered density of the obtained three-dimensional model was 99.9% or more, which was excellent in denseness. The light transmittance was 89% or more, and the bending strength was 130 MPa or more, showing excellent characteristics. In Example 2 using the spheroidized glass powder, each characteristic was particularly excellent. On the other hand, in the comparative example in which the glass powder was sintered at atmospheric pressure, the obtained three-dimensional model had a low sintering density of 94%, a light transmittance of 5%, and a bending strength of 100 MPa. It was inferior to 1 and 2.

Claims (7)

A layer composed of a curable resin and a resin composition containing a substantially spherical glass powder having an average particle size of 1.5 to 500 μm is selectively irradiated with active energy rays to form a cured layer having a predetermined pattern. Process,
After forming a new resin composition layer on the cured layer, the resin composition layer is irradiated with active energy rays to form a new cured layer having a predetermined pattern continuous with the cured layer, and a predetermined three-dimensional model is formed. A step of repeatedly laminating the cured layer until it is obtained to prepare a precursor.
The process of removing the curable resin by heat-treating the precursor and sintering the glass powder,
It is a manufacturing method of a three-dimensional model having
A method for producing a three-dimensional model, which comprises sintering glass powder in a reduced pressure atmosphere of 1000 Pa or less. The method for producing a three-dimensional model according to claim 1, wherein the resin composition contains 1 to 50% of a curable resin and 50 to 99% of a glass powder in a volume%. The method for producing a three-dimensional model according to claim 1 or 2 , wherein the curable resin is an ultraviolet curable resin. The method for producing a three-dimensional model according to any one of claims 1 to 3 , wherein the softening point of the glass powder is 1200 ° C. or lower. The method for producing a three-dimensional model according to any one of claims 1 to 4 , wherein the difference between the crystallization temperature and the softening point (crystallization temperature-softening point) of the glass powder is 10 ° C. or higher. Glass powder, in mass% as a _composition, which contains _{SiO 2 30~85%, Al 2 O} 3 0~30%, B 2 O 3 0~50%, the 2 O 0~10% Li 2 O + Na 2 O + K The method for manufacturing a three-dimensional model according to any one of claims 1 to 5, wherein the three-dimensional modeled product is manufactured. The method for producing a resin composition for three-dimensional modeling according to any one of claims 1 to 6 , wherein the glass powder is sintered within a softening point of the glass powder of ± 100 ° C.