JP2021049721A - Modeling method for three-dimensional object, composite material for three-dimensional modeling, and pellet for three-dimensional modeling - Google Patents

Abstract

To provide a modeling method for a three-dimensional object that suppresses thermal deformation.SOLUTION: A modeling method for a three-dimensional object has: a melting step for heating and melting a material that contains a thermoplastic resin including glass fibers and a polypropylene-based polymer; and a modeling step that extrudes the molten material from a nozzle of a three-dimensional object manufacturing apparatus to model the three-dimensional object. By adopting the modeling method, it can be suppressed that the occurrence of warpage and extension in the three-dimensional object due to thermal shrinkage or the like when a thermosetting resin cures.SELECTED DRAWING: None

Description

The present invention relates to a method for modeling a three-dimensional model, a composite material for three-dimensional modeling, and a pellet for three-dimensional modeling.

In recent years, attention has been paid to a method for modeling a three-dimensional model using a three-dimensional model manufacturing device with the aim of efficient manufacturing. In the three-dimensional model manufacturing apparatus, a three-dimensional model is modeled by sequentially stacking two-dimensional layers obtained by cutting the three-dimensional coordinate data into round slices based on the three-dimensional coordinate data (for example, Patent Documents). 1).

Examples of the modeling method for the three-dimensional model include a material extrusion method (MEX method), a stereolithography method, an inkjet method, a powder fixation modeling method, and a powder sintering modeling method. Among the above methods, the material extrusion method has attracted particular attention because it allows a wide range of material selection. The material extrusion method is a method of forming a three-dimensional model by extruding a thermoplastic resin melted by heat from a nozzle and laminating it. Examples of the production of the three-dimensional model by the material extrusion method include an example using the three-dimensional model manufacturing apparatus described in Patent Document 2.

JP-A-2017-1898885 International Publication No. 2015/129733

However, since the conventional material extrusion method for modeling a three-dimensional model uses only a thermoplastic resin as a material, heat shrinkage occurs when the molten thermoplastic resin extruded from the nozzle solidifies as a three-dimensional model. Due to the above, the three-dimensional modeled object may be warped or stretched (hereinafter, also simply referred to as “thermal deformation”). In view of the above circumstances, the present invention relates to a method for forming a three-dimensional model in which thermal deformation is suppressed, and a composite material for three-dimensional modeling in which thermal deformation is suppressed when the three-dimensional model is formed, and for three-dimensional modeling. The subject is to provide pellets.

Specific means for solving the above problems include the following aspects.

[1] A melting step of heating and melting a material containing glass fiber and a thermoplastic resin, and
A modeling process in which the molten material is extruded from a nozzle of a three-dimensional model manufacturing device to form a three-dimensional model, and a modeling process.
A method for modeling a three-dimensional model having the above.
[2] The method for modeling a three-dimensional model according to [1], wherein the thermoplastic resin contains a propylene-based polymer.
[3] The method for modeling a three-dimensional model according to [1] or [2], wherein the material contains pellets containing the glass fiber and the thermoplastic resin.
[4] The method for modeling a three-dimensional model according to [3], wherein the material contains two or more of the pellets.
[5] The method for modeling a three-dimensional model according to any one of [1] to [4], wherein the glass fiber contains a glass fiber having a fiber length of 0.1 mm or more.
[6] The three-dimensional model according to any one of [1] to [5], wherein the content of the glass fiber is 1% by mass to 60% by mass with respect to the total mass of the material. Modeling method.
[7] The glass fiber is
The fiber length is 5 mm or more, and the fiber length is 5 mm or more.
The content of the glass fiber is 1% by mass to 40% by mass with respect to the total mass of the material.
The method for modeling a three-dimensional model according to any one of [1] to [6].
[8] The method for modeling a three-dimensional model according to any one of [1] to [6], wherein the glass fiber contains a glass fiber having a fiber length of 0.1 mm or more and less than 2 mm.
[9] Glass fibers having a fiber length of 0.1 mm or more and
With thermoplastic resin
Composite material for 3D modeling including.
[10] The composite material for three-dimensional modeling according to [9], wherein the thermoplastic resin contains a propylene-based polymer.
[11] The three-dimensional modeling composite material according to [9] or [10], wherein the content of the glass fiber is 1% by mass to 50% by mass with respect to the total mass of the three-dimensional modeling composite material. ..
[12] The composite material for three-dimensional modeling according to any one of [9] to [11] is included.
Pellets for 3D modeling.

According to the present disclosure, there are provided a method for forming a three-dimensional model in which thermal deformation is suppressed, and a composite material for three-dimensional modeling in which thermal deformation is suppressed when the three-dimensional model is formed, and pellets for three-dimensional modeling. Will be done.

Hereinafter, embodiments of the present disclosure will be described. These explanations and examples illustrate the embodiments and do not limit the scope of the embodiments.

In the numerical range described stepwise in the present disclosure, the upper limit value or the lower limit value described in one numerical range may be replaced with the upper limit value or the lower limit value of another numerical range described stepwise. .. Further, in the numerical range described in the present disclosure, the upper limit value or the lower limit value of the numerical range may be replaced with the value shown in the examples.

In the present disclosure, each component may contain a plurality of applicable substances. When referring to the amount of each component in the composition in the present disclosure, if a plurality of substances corresponding to each component are present in the composition, unless otherwise specified, the plurality of types present in the composition. It means the total amount of substances.

-3D modeling method for 3D objects-
The method for modeling a three-dimensional model according to the present disclosure includes a melting step of melting a material containing glass fiber and a thermoplastic resin, and extruding the melted material from a nozzle of a three-dimensional model manufacturing apparatus to create a three-dimensional model. It has a modeling process and a modeling process.

Conventionally, a material extrusion method for forming a three-dimensional model using a thermoplastic resin as a material has been known. However, the molding method may cause a phenomenon such as heat shrinkage when the molten thermoplastic resin extruded from the nozzle solidifies as a three-dimensional model. As a result, the obtained three-dimensional model may be warped or stretched.
On the other hand, the method for modeling a three-dimensional model according to the present disclosure can form a three-dimensional model in which thermal deformation is suppressed by having the above steps. The factors that exert this effect are not always clear, but can be estimated as follows.
The method for modeling a three-dimensional model according to the present disclosure includes glass fibers in addition to a thermoplastic resin as a material. Therefore, the heat shrinkage or the like that occurs when the molten material extruded from the nozzle is solidified as a three-dimensional model tends to be suppressed. As a result, it is considered that a three-dimensional model in which thermal deformation is suppressed can be obtained.

≪Melting process≫
In the melting step, the material containing the glass fiber and the thermoplastic resin is heated and melted.
The heating means for heating and melting the material is not particularly limited, and known heating means can be applied. For example, the melting step is preferably a step of heating and melting the material using a three-dimensional model manufacturing apparatus provided with a heating means such as an electric heater.

The temperature at which the material is heated and melted is not particularly limited and may be appropriately set according to the properties of the thermoplastic resin. For example, the temperature at which the material is heated and melted may be a temperature of −50 ° C. to + 150 ° C. with reference to the melting temperature of the thermoplastic resin, that is, the melting point or the glass transition temperature (Tg).

The melting step may be a melting and kneading step in which a material containing glass fiber and a thermoplastic resin is heated to melt and knead. When the melt-kneading step is performed, the materials tend to be mixed with high uniformity due to the kneading. Therefore, it is easy to suppress the occurrence of local unevenness in the composition ratio and the like in the obtained three-dimensional model. As a result, local thermal deformation of the three-dimensional model tends to be further suppressed.

[material]
Materials include glass fiber and thermoplastics. The material may optionally contain a thermoplastic elastomer and other components.

[Glass fiber]
Glass fiber refers to a single fiber of finely fibrous glass.
The glass fiber is not particularly limited, and a known glass fiber can be applied. For example, the glass fiber may be a cotton-like glass fiber called so-called glass wool, or may be a so-called glass fiber, chopped strand, or the like. For example, the glass fiber is preferably glass fiber or chopped strand from the viewpoint of strength. The glass fiber may be used alone or in combination of two or more.

The fiber length of the glass fiber is not particularly limited, and may be appropriately set according to the size, strength, and the like of the three-dimensional model to be modeled.
For example, the glass fiber preferably contains a glass fiber having a fiber length of 0.1 mm or more and a fiber length of 0.1 mm or more and 2 mm from the viewpoint of improving the appearance of the three-dimensional model while suppressing thermal deformation. It is more preferable to contain less than glass fiber, and it is further preferable to contain glass fiber having a fiber length of 0.1 mm or more and 1.8 mm or less.
For example, the glass fiber preferably contains a glass fiber having a fiber length of 0.1 mm or more, and includes a glass fiber having a fiber length of 3 mm or more, from the viewpoint of forming a three-dimensional model in which thermal deformation is further suppressed. More preferably, it further preferably contains glass fiber having a fiber length of 5 mm or more.
For example, from the viewpoint of production, the glass fiber preferably contains a glass fiber having a fiber length of 15 mm or less, more preferably contains a glass fiber having a fiber length of 12 mm or less, and a glass fiber having a fiber length of 10 mm or less. It is more preferable to include.

The fiber length of a glass fiber refers to the longest linear distance when connecting one end to the other in the longitudinal direction of one glass fiber, which is the smallest unit.

The method for measuring glass fiber is as follows.
The sample, which is a three-dimensional model, is treated in an electric furnace at 600 ° C. for 2 to 3 hours to incinerate it. Then, the ashed product is observed under a microscope, and the obtained image is image-processed to determine the fiber length of any 20 glass fibers. The weight average value (weight average fiber length) of each fiber length was defined as the fiber length of the glass fiber.

The content of the glass fiber is preferably 1% by mass to 50% by mass, and 5% by mass to 45% by mass, based on the total mass of the material, from the viewpoint of forming a three-dimensional model in which thermal deformation is further suppressed. It is more preferably by mass%, and even more preferably 10% by mass to 40% by mass.

As one aspect of the present disclosure, the glass fiber may have a fiber length of 5 mm or more, and the content of the glass fiber may be 1% by mass to 40% by mass with respect to the total mass of the material.

As one aspect of the present disclosure, the glass fiber may have a fiber length of 0.1 mm to 2 mm and a glass fiber content of 1% by mass to 40% by mass with respect to the total mass of the material.

〔Thermoplastic resin〕
The thermoplastic resin is not particularly limited, and a known thermoplastic resin can be applied. The thermoplastic resin may be used alone or in combination of two or more.
For example, as a thermoplastic resin,
High density polyethylene (HDPE), low density polyethylene (LDPE), propylene polymer (propylene homopolymer (PP), etc.), polyvinyl chloride (PVC), polyvinyl chloride, polystyrene (PS), vinyl acetate (PVAc) ), Polytetrafluoroethylene (PTFE), acrylonitrile butadiene styrene resin (ABS resin), styrene acrylonitrile copolymer (AS resin), acrylic resin (PMMA) and other general-purpose plastics;
Polyamide (PA), polyacetal (POM), polycarbonate (PC), modified polyphenylene ether (m-PPE, modified PPE, PPO), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), syndiotactic polystyrene (SPS), Engineering plastics such as cyclic polyolefin (COP);
Polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), polysulfone (PSF), polyether sulfone (PES), acrylate polyarylate (PAR), polyetheretherketone (PEEK), thermoplastic polyimide (PI) , Polyamideimide (PAI) and other super engineering plastics;
And so on.

Among the above, the thermoplastic resins include high density polyethylene (HDPE), propylene polymer, polyamide (PA), polybutylene terephthalate (PBT), syndiotactic polystyrene (SPS), polyphenylene sulphide (PPS) and polyacetal. It is preferable to contain one or more selected from the group consisting of (POM), and more preferably to contain a propylene-based polymer.

The thermoplastic resin may be a crystalline thermoplastic resin or an amorphous thermoplastic resin. For example, from the viewpoint of preferably dispersing the glass fiber in the thermoplastic resin, the thermoplastic resin preferably contains a crystalline thermoplastic resin, and is preferably a high-density polyethylene (HDPE), a propylene-based polymer, or a polyamide (PA). , Polybutylene terephthalate (PBT), syndiotactic polystyrene (SPS), polyphenylene sulfide (PPS) and polyacetal (POM), more preferably containing one or more crystalline thermoplastic resins selected from the group. , It is more preferable to contain a crystalline propylene-based polymer. The "crystallinity" of the thermoplastic resin means that it has an endothermic peak in the differential scanning calorimetry. On the other hand, the "amorphous" of the thermoplastic resin means that a clear endothermic peak is not observed in the differential scanning calorimetry.

The propylene-based polymer is a polymer having at least propylene as a constituent unit.
The propylene-based polymer may be a homopolymer of propylene or a copolymer of propylene and another monomer. When the propylene-based polymer is a copolymer, examples of the propylene-based polymer include a copolymer of propylene and an α-olefin having 2 to 20 carbon atoms (excluding propylene). Examples of the copolymer of propylene and α-olefin having 2 to 20 carbon atoms include propylene / ethylene copolymer, propylene / 1-butene copolymer, propylene / ethylene / 1-butene copolymer, and propylene. -Examples include 4-methyl-1-pentene copolymers and mixtures thereof.

When the propylene-based polymer is a copolymer, the propylene-based polymer may be any of a random copolymer, an alternating copolymer, a block copolymer, and a graft copolymer.

When the propylene-based polymer is a copolymer, the ratio of the constituent units derived from propylene in the propylene-based polymer may be appropriately designed according to the properties of the desired three-dimensional model. For example, the ratio of the constituent units derived from propylene in the propylene-based polymer is preferably 50 mol% or more, preferably 70 mol% to 99.5, based on 100 mol% of all the constituent units in the propylene-based polymer. It is more preferably mol%, and even more preferably 80 mol% to 98 mol%.

The stereoregularity of the propylene-based polymer is not particularly limited and may not have stereoregularity, and may be any of isotactic, syndiotactic, atactic and a mixture thereof.

The content of the propylene-based polymer is preferably 95% by mass or more, more preferably 98% by mass or more, and 99.9% by mass or more, based on 100% by mass of the total amount of the thermoplastic resin. Is even more preferable.

The content of the thermoplastic resin is not particularly limited and may be set according to the heat shrinkage rate of the thermoplastic resin or the like. For example, the content of the thermoplastic resin is preferably 40% by mass to 99% by mass, preferably 45% by mass to 97% by mass, based on 100% by mass of the total amount of the material containing the glass fiber and the thermoplastic resin. More preferably, it is more preferably 50% by mass to 95% by mass.

[Properties as a material containing glass fiber and thermoplastic resin]
The melt mass flow rate (MFR) of the material containing the glass fiber and the thermoplastic resin is not particularly limited, and may be appropriately designed according to the desired strength of the three-dimensional model, manufacturing convenience, and the like. For example, the MFR of the material is preferably 30 g / 10 min or less, more preferably 25 g / 10 min or less, and 20 g / 10 min or less from the viewpoint of further suppressing thermal deformation when a three-dimensional model is formed. Is more preferable. The MFR of the material is a value measured in accordance with JIS K7210: 99.

The method in which the MFR of the material is within the above range is not particularly limited, and examples thereof include a method of controlling the content of the glass fiber contained in the material; a method of controlling the fiber length of the glass fiber; and the like.

The density of the material containing the glass fiber and the thermoplastic resin is not particularly limited, and may be appropriately designed according to the desired strength of the three-dimensional model, manufacturing convenience, and the like. For example, the density of the material, the more the viewpoint of suppressing thermal deformation when the three-dimensional shaped object ^is preferably ^{800kg / m 3 ~1500kg / m 3} , with 850kg / ^{m 3} ~1400kg / m 3 more preferably ^in, further preferably ^{900kg / m 3 ~1300kg / m 3} . The density of the material is a value measured in accordance with ISO 1183.

The method in which the density of the material is within the above range is not particularly limited, and examples thereof include a method of controlling the content of the glass fiber contained in the material; a method of controlling the fiber length of the glass fiber; and the like.

[Material form]
The material may contain other raw materials (hereinafter, also simply referred to as “other raw materials”) other than the glass fiber and the thermoplastic resin as long as the thermal deformation of the three-dimensional modeled object is suppressed.
Other raw materials include, for example, ultraviolet absorbers, stabilizers, antioxidants, plasticizers, colorants, color formers, flame retardants, antistatic agents, fluorescent whitening agents, matting agents, impact strength improvers and the like. Can be mentioned.

The shape of the material is not particularly limited as long as it can be applied to a known three-dimensional model manufacturing apparatus, and any shape of powder, pellet, or filament may be used, and a mixture in which materials having these shapes are mixed may be used. You may use it. For example, the shape of the material is preferably pellets from the viewpoint of producing a large three-dimensional model.

The material preferably contains pellets containing glass fiber and a thermoplastic resin, and more preferably contains pellets containing glass fiber and a polypropylene polymer.

The material can include, in particular, two or more pellets. That is, the physical properties of the material can be adjusted by including a plurality of "pellets containing glass fiber and polypropylene polymer" having different composition ratios, types of thermoplastic resins, and the like.
When the material contains the two or more kinds of pellets, it tends to be easier to adjust the composition ratio, the concentration ratio, etc. according to the desired properties of the three-dimensional modeled object when modeling the three-dimensional modeled object.

The material may be a molded product or a commercially available product.
When molding a material, the molding method is not particularly limited, and a known molding method such as extrusion molding can be used. When molding the material as pellets, for example, a method of impregnating a bundle of glass fibers in which a plurality of fibers are bundled with a molten thermoplastic resin and drawing the fiber into a strand shape to obtain a desired size, etc. Can be mentioned.
Examples of commercially available products of materials containing glass fiber and thermoplastic resin include the Mostron (registered trademark) series manufactured by Prime Polymer Co., Ltd. and the Prime Polypro series manufactured by Prime Polymer Co., Ltd.

≪Modeling process≫
In the modeling process, the molten material is extruded from a nozzle of a three-dimensional model manufacturing apparatus to model a three-dimensional model. More specifically, in the modeling process, the molten material is extruded from the nozzle of the three-dimensional model manufacturing apparatus, and a two-dimensional layer obtained by cutting the three-dimensional coordinate data into round slices based on the three-dimensional coordinate data is formed. A three-dimensional model is formed by sequentially stacking them on a substrate.

The three-dimensional model manufacturing device is not particularly limited as long as it is a material extrusion type three-dimensional model manufacturing device, and a known device or a known device configuration can be applied.

For example, a three-dimensional model manufacturing device
The cylinder from which the material is supplied and
A nozzle provided on the downstream side of the cylinder in the discharge direction of the material and ejecting the material,
A heating means provided in the cylinder to heat and melt the material, and
It may be a three-dimensional model manufacturing apparatus for extruding the molten material from a nozzle to form a three-dimensional model.

The cylinder may have a screw inside which the material is kneaded.
The three-dimensional model manufacturing apparatus may further include a table apparatus that is arranged to face the nozzle and receives the molten material from the nozzle.
The three-dimensional model manufacturing apparatus may further include control means for controlling the spatial coordinates of the substrate and the nozzle, and the amount of the material extruded from the nozzle. The control means is a control means for controlling the discharge of materials from the nozzle and controlling the movement of the nozzle and / or the table device in the X-axis, Y-axis, and Z-axis directions with respect to the reference plane. Is preferable.

≪Other processes≫
The modeling method of the three-dimensional modeled object according to the present disclosure may have other steps (hereinafter, also simply referred to as “other steps”) other than the melting step and the modeling step. For example, the modeling method of the three-dimensional modeled object according to the present disclosure may further include, as another step, a processing step of processing the three-dimensional modeled object modeled in the modeling process.

-3D modeling composite material-
The three-dimensional modeling composite material according to the present disclosure includes glass fibers having a fiber length of 0.1 mm or more and a thermoplastic resin. By having the above-mentioned structure, the composite material for three-dimensional modeling according to the present disclosure suppresses thermal deformation when it is made into a three-dimensional model. The three-dimensional modeling composite material according to the present disclosure may be used as a material containing glass fiber and a thermoplastic resin in the above-mentioned modeling method for the three-dimensional modeling object according to the present disclosure.

The material, amount and properties of the glass fiber in the three-dimensional modeling composite material according to the present disclosure include the same material, quantity and property as the glass fiber described in the modeling method of the three-dimensional modeled object according to the present disclosure.

The content of the glass fiber is preferably 1% by mass to 50% by mass with respect to the total mass of the three-dimensional modeling composite material from the viewpoint of producing a three-dimensional modeled product in which thermal deformation is further suppressed.

The material, amount, and properties of the thermoplastic resin in the three-dimensional modeling composite material according to the present disclosure include the same materials, amounts, and properties as the thermoplastic resin described in the modeling method for the three-dimensional modeling object according to the present disclosure. ..

The thermoplastic resin preferably contains a propylene-based polymer from the viewpoint of obtaining a three-dimensional model that is lightweight and has good heat resistance.

The composite material for three-dimensional modeling may contain other raw materials (hereinafter, also simply referred to as “other raw materials”) other than the glass fiber and the thermoplastic resin having a fiber length of 0.1 mm or more. Examples of other raw materials include the same raw materials as those described in the method for modeling a three-dimensional model according to the present disclosure.

-Pellets for 3D modeling-
The three-dimensional modeling pellet includes the three-dimensional modeling composite material according to the present disclosure. By having the above-mentioned structure, the three-dimensional modeling pellet according to the present disclosure suppresses thermal deformation when it is made into a three-dimensional modeling object. The three-dimensional modeling pellet according to the present disclosure may be used as a material containing glass fiber and a thermoplastic resin in the above-mentioned modeling method for the three-dimensional modeling object according to the present disclosure.

Hereinafter, the present invention will be specifically described with reference to Examples, but the present invention is not limited to these Examples. Unless otherwise specified, "parts" and "%" are based on mass.

-Preparation of materials-
The materials shown below were prepared. The measuring method for each property was the measuring method described in the embodiment for carrying out the invention described above.

・ "L-1042P" Mostron (registered trademark) manufactured by Prime Polymer Co., Ltd.
・ "L-4070P" Prime Polymer Co., Ltd. Mostron (registered trademark)
・ "K7100" Prime Polypro (registered trademark) made by Prime Polymer Co., Ltd.
・ "R-300G" Prime Polypro (registered trademark) manufactured by Prime Polymer Co., Ltd.
・ "J108M" Prime Polypro (registered trademark) made by Prime Polymer Co., Ltd.

[Examples 1 to 5 and Comparative Example 1]
-3D modeling-
A material extrusion type three-dimensional model manufacturing apparatus (manufactured by WASP Co., Ltd., DeltaWASP 3MT Industrial) was used for modeling the three-dimensional model. First, the materials shown in Table 1 were supplied to the inside of the cylinder by a hopper. Next, the temperature of the material was set to 180 ° C. to 240 ° C. by a heater provided in the cylinder, and the material was heated and melted. Then, the modeling speed is set to 3000 mm / min, and the molten material is sequentially laminated on the substrate based on the three-dimensional coordinate data, so that the three-dimensional shape of a rectangular parallelepiped of 250 mm × 100 mm × height 20 mm is formed. I made a model. The three-dimensional model of Example 5 was modeled using glass fibers at a ratio of 50/50 using two types, K7100 and R-300G.

-Evaluation of thermal deformation-
For the three-dimensional modeled objects of each example obtained above, deformation was evaluated and appearance / surface was evaluated according to the following criteria. The evaluation results are shown in Table 1. For the fiber lengths in Table 1, the average fiber length was measured by the method described above.
[Evaluation of deformation]
A: No distortion, elongation or warpage is observed on the entire surface of the three-dimensional model.
B: Distortion, elongation or warpage is observed in a part of the 3D model, but it is an acceptable level.
C: Deformation such as distortion, elongation, and warpage is observed on the entire surface of the three-dimensional model.
[Evaluation of appearance / surface]
A: The surface is smooth and the appearance is good.
B: Although the surface is slightly uneven, the appearance is at an acceptable level.
C: Unacceptable level.

As shown in Table 1, it was found that the method for producing the three-dimensional model in the examples provides a three-dimensional model in which thermal deformation is suppressed as compared with the method for producing the three-dimensional model in the comparative example. ..

Claims (12)

A melting process that heats and melts materials containing glass fiber and thermoplastic resin,
A modeling process in which the molten material is extruded from a nozzle of a three-dimensional model manufacturing device to form a three-dimensional model, and a modeling process.
A method for modeling a three-dimensional model having the above. The method for modeling a three-dimensional model according to claim 1, wherein the thermoplastic resin contains a propylene-based polymer. The method for modeling a three-dimensional model according to claim 1 or 2, wherein the material contains pellets containing the glass fiber and the thermoplastic resin. The method for modeling a three-dimensional model according to claim 3, wherein the material contains two or more of the pellets. The method for modeling a three-dimensional model according to any one of claims 1 to 4, wherein the glass fiber contains a glass fiber having a fiber length of 0.1 mm or more. The method for modeling a three-dimensional model according to any one of claims 1 to 5, wherein the content of the glass fiber is 1% by mass to 60% by mass with respect to the total mass of the material. The glass fiber is
The fiber length is 5 mm or more, and the fiber length is 5 mm or more.
The content of the glass fiber is 1% by mass to 40% by mass with respect to the total mass of the material.
The method for modeling a three-dimensional model according to any one of claims 1 to 6. The method for modeling a three-dimensional model according to any one of claims 1 to 6, wherein the glass fiber contains a glass fiber having a fiber length of 0.1 mm or more and less than 2 mm. Glass fibers with a fiber length of 0.1 mm or more and
With thermoplastic resin
Composite material for 3D modeling including. The composite material for three-dimensional modeling according to claim 9, wherein the thermoplastic resin contains a propylene-based polymer. The three-dimensional modeling composite material according to claim 9 or 10, wherein the content of the glass fiber is 1% by mass to 50% by mass with respect to the total mass of the three-dimensional modeling composite material. The composite material for three-dimensional modeling according to any one of claims 9 to 11.
Pellets for 3D modeling.