KR102184360B1 - Phosphorescent material filament composition for 3d printer - Google Patents

Abstract

The present invention relates to a phosphorescent filament composition for a three-dimensional (3D) printer, capable of producing a shape that emits light in a dark place by reducing energy to visible light after a shape made by a 3D printer is stimulated by light to absorb energy. According to the present invention, there is an advantage of being able to produce a shape that emits light in a dark place through a phosphorescent pigment by using a 3D printer, and it is easy to identify the temperature according to a thermochromic pigment and to ensure the safety of a user by warning of danger. In addition, an inorganic filler is contained to improve strength, bonding strength, moisture stability and durability, and a flame retardant is contained to produce a 3D shape that is not easily burned by fire.

Description

Phosphorescent filament composition for 3D printer TECHNICAL FIELD OF THE INVENTION

The present invention relates to a photoluminescent filament composition for a 3D printer, and more particularly, a 3D (3D) object capable of emitting light in a dark place by reducing energy to visible light after a shape made by a 3D printer is stimulated by light. -Dimension) It relates to a photoluminescent filament composition for a printer.

In general, a 3D printer refers to a 3D injection molding machine that three-dimensionally molds a desired product by stacking a very thin film (layer) layer by layer based on 3D modeling. This 3D printing technology and industry is an additive manufacturing method as opposed to the conventional cutting processing method, and is a new technology field in the spotlight of the future processing industry.

In general, 3D printing technology is basically based on a 3D digital model. 3D printing methods include Fused Deposition Modeling (FDM), Photopolymerization (PP), Material Extrusion (ME), Adhesive Spraying (Binder Jetting, BJ), and Material Jetting. , MJ), direct energy deposition (DED), powder bed fusion (PBF), and sheet lamination (SL).

Among the 3D printing methods, the molten resin extrusion method (FDM) belongs to the material spraying method, which is a method of forming a three-dimensional model by laminating a material emitted through a nozzle in a molten state by applying high temperature heat to a solid filament.

Such a solid filament is used by mixing various materials according to the shape to be manufactured, and Patent Publication No. 10-1813403 discloses a polylactic acid charcoal composition for a 3D printer filament excellent in heat resistance and mechanical properties. The technology includes (A) 90.0 to 99.9% by weight of polylactic acid resin; (B) 0.1 to 10.0% by weight of charcoal; (C) 0.1 to 10.0% by weight of amorphous resin; And (D) 0.1 to 5.0% by weight of a polyolefin resin having one or more hydrophilic functional groups.

In addition, a composition for an FDM 3D printer is disclosed in Registered Patent Publication No. 10-1912839. The technology includes a ceramic powder and a binder containing CaO and SiO ₂ as a main component, and based on the total weight of the ceramic powder, the CaO is 20 to 60% by weight and the SiO ₂ is 15 to 40% by weight, and the ceramic powder It relates to a composition for FDM 3D printer in the form of a paste in which the mixing ratio of the binder and the binder is 5 to 7:3 to 5 by weight.

On the other hand, there is a need for a shape manufactured by a 3D printer to be manufactured so that the naked eye can be identified at night, but there is a disadvantage that the conventional technology cannot solve this.

KR 10-1813403 B1 (2017. 12. 21.) KR 10-1912839 B1 (2018. 10. 23.)

The present invention has been devised to solve the problems of the prior art, and the problem to be solved in the present invention is a photoluminescent filament composition for a 3D printer capable of producing a shape that emits light in a dark place by absorbing light and reducing it to visible light. To provide.

In addition, it is to provide a photoluminescent filament composition for a 3D printer having improved strength, bonding force, moisture stability and durability, and does not burn easily.

The photoluminescent filament composition for a 3D printer according to the present invention for achieving the above object is based on 100 parts by weight of synthetic resin, 20 to 100 parts by weight of photoluminescent pigment, 20 to 30 parts by weight of Zion pigment, 5 to 10 parts by weight of inorganic filler, It characterized in that it contains 2 to 10 parts by weight of flame retardant and 2 to 10 parts by weight of additives.

In addition, the phosphorescent pigment is based on 100 parts by weight of aluminum oxide, 30 to 50 parts by weight of calcium carbonate, 20 to 30 parts by weight of strontium carbonate, 15 to 20 parts by weight of boric acid, 3 to 5 parts by weight of didisprosium trioxide and diuropium Using a strontium aluminate pigment containing 1 to 2 parts by weight of trioxide, but mixing 3 to 7 parts by weight of a fluorinated ethylene propylene (FEP) copolymer with respect to 100 parts by weight of the photoluminescent pigment to coat the surface of the photoluminescent pigment. Characterized in that.

In addition, the Zion pigment is characterized in that it includes a blue Zion pigment (BT-20), an orange Zion pigment (OT-31), and a red Zion pigment (RT-43).

In addition, the inorganic filler is characterized in that it contains 30 to 70 parts by weight of sepiolite powder and 20 to 30 parts by weight of petalite powder based on 100 parts by weight of bentonite powder.

According to the present invention, there is an advantage of being able to produce a shape that emits light in a dark place through a phosphorescent pigment using a 3D printer, and it is easy to identify the temperature according to the Zion pigment, as well as to ensure the safety of users by warning of danger. I can.

In addition, the inorganic filler is contained to improve strength, bonding force, moisture stability and durability, and the flame retardant is contained to produce a 3D shape that is not easily burned by fire.

1 is a step flow diagram showing a manufacturing process of a photoluminescent filament for a 3D printer using a photoluminescent filament composition for a 3D printer according to the present invention.

Hereinafter, the present invention will be described in detail.

The present invention relates to a photoluminescent filament composition for a 3D printer capable of emitting light in a dark place by reducing energy after a shape made by a 3D (3-Dimension) printer is stimulated by light and then reduced to visible light.

The phosphorescent filament composition for a 3D printer according to the present invention comprises a synthetic resin, a phosphorescent pigment, a Zion pigment, an inorganic filler, a flame retardant and an additive.

More specifically, based on 100 parts by weight of synthetic resin, including 20 to 100 parts by weight of photoluminescent pigment, 20 to 30 parts by weight of Zion pigment, 5 to 10 parts by weight of inorganic filler, 2 to 10 parts by weight of flame retardant and 2 to 10 parts by weight of additives It is done by doing.

The synthetic resin is a main material of the photoluminescent filament composition for 3D printers according to the present invention, and includes acrylonitrile butadiene styrene (ABS), polylactic acid (PLA), polyamide (PA, polyamide), Polyvinyl alcohol (PVA), polycarbonate (PC), poly methyl methacrylate; PMMA), polydimethylsiloxane (PDMS), polyimide (PI), polyethylene (PE), polypropylene (PP), polystyrene (PS), polytetrafluorethylene; PTFE), polyvinylchloride (PVC), polyurethane (polyurethane; PU), photocurable resins, and one or more selected from the group consisting of epoxy resins may be used.

Preferably, based on 100 parts by weight of acrylonitrile butadiene styrene (ABS), 30 to 70 parts by weight of polylactic acid (PLA), 30 to 50 parts by weight of polyamide (PA), poly It is used by mixing 30 to 50 parts by weight of vinyl alcohol (PVA) and 30 to 50 parts by weight of polycarbonate (PC).

Among the synthetic resins, acrylonitrile butadiene styrene (ABS, Acrylonitrile Butadiene Styrene Copolymer) is a universally used thermoplastic polymer that can be extruded at a temperature of 215 to 250°C and exhibits easy secondary processing properties.

Polylactic acid (PLA) is a 100% renewable resource such as corn and potato starch, and does not cause environmental pollution during disposal because it exhibits excellent biodegradability, and is extruded at a temperature of 180~220℃. This is possible.

Polyamide (PA, Polyamide) is one of engineering plastics, has excellent tensile strength, abrasion resistance, chemical resistance, heat resistance and mechanical strength, and exhibits excellent surface roughness.

Polyvinyl alcohol (PVA) has excellent biodegradability, fast dissolution, extrusion molding at temperatures around 200℃, and excellent tensile strength, tensile strength, elongation and abrasion resistance.

Polycarbonate (PC) is a thermoplastic plastic with excellent impact resistance and is used in various industrial fields such as automobiles, aerospace, medical and electrical parts, and has excellent dimensional stability and high heat resistance, and has high tension, flexibility and mechanical properties. Indicates strength.

In the present invention, acrylonitrile butadiene styrene (ABS), polylactic acid (PLA), polyamide (PA, Polyamide), polyvinyl alcohol (PVA), and polycarbonate (PC) ) By mixing at the optimum mixing ratio, it is possible to show excellent processability and mechanical properties by maximizing each advantage.

The phosphorescent pigment can absorb and store a wide range of light, has excellent luminous properties such as luminance and halos, and has excellent heat resistance, cold resistance, and chemical resistance, so that it can maintain the luminous function even in harsh environments such as high temperature and low temperature. It is preferable to use it.

In addition, phosphorescent pigments by color (Yellowish Green, Bluish Green, Sky Blue, Orange, Red, Green, Blue, Lemon Yellow, Pink, Orange Red, Rose Red, Orange Yellow, Blue Green, Yellow Green, Violet Glow, Orange Glow) , White Glow, Red Glow), which can be used to emit light with a unique color, so it is possible to realize various light-emitting effects suitable for specific products to be applied.

In the present invention, a strontium aluminate-based pigment including aluminum oxide, calcium carbonate, strontium carbonate, boric acid, didisprosium trioxide, and diuropium trioxide may be used as the photoluminescent pigment.

Preferably, based on 100 parts by weight of aluminum oxide, 30 to 50 parts by weight of calcium carbonate, 20 to 30 parts by weight of strontium carbonate, 15 to 20 parts by weight of boric acid, 3 to 5 parts by weight of didisprosium trioxide, and diuropium trioxide A strontium aluminate pigment containing 1 to 2 parts by weight may be used.

It is preferable that the particle size of the phosphorescent pigment is 3 to 5 μm.

If the particle size of the photoluminescent pigment is less than 3 μm, the particles are too fine to develop photoluminescent properties, and when it exceeds 5 μm, problems such as peeling of pigment particles and loss of light emission function may occur.

Since the phosphorescent pigment does not contain radioactive materials, it is harmless to the human body, and does not easily deform even at high temperatures (about 400°C), so it can maintain the photoluminescent function as it is, and has excellent chemical resistance.

In addition, in the present invention, the surface of the phosphorescent pigment may be coated with a fluorinated ethylene propylene (FEP) copolymer to have a water proof effect.

Here, as the fluorinated ethylene propylene (FEP) copolymer, it is preferable to use a copolymer of tetrafluoroethylene and hexafluoroisopropene, and a copolymer of tetrafluoroethylene and hexafluoroisopropene and perfluoroalkyl vinyl ether.

At this time, it is preferable to mix 3 to 7 parts by weight of a fluorinated ethylene propylene (FEP) copolymer with respect to 100 parts by weight of the photoluminescent pigment to coat the surface of the photoluminescent pigment.

Through this, the surface of the phosphorescent pigment is coated to have a waterproof effect, thereby securing a long afterglow time and maintaining the durability of the phosphorescent pigment itself.

If, with respect to 100 parts by weight of the synthetic resin, if less than 20 parts by weight of the phosphorescent pigment is included, the manufactured article cannot emit light because it does not absorb sufficient light, and if it contains more than 100 parts by weight, the manufactured article is solidified. There is a disadvantage in that the speed is slowed to deform, or stability and durability are deteriorated.

Table 1 below shows the impact strength and solidification time measured according to the mixing ratio of the phosphorescent pigment to 100 parts by weight of the synthetic resin.

5, 10, 20, 50, 100 and 120 parts by weight of a photoluminescent pigment were each mixed with respect to 100 parts by weight of the synthetic resin, and this was prepared as a filament. The thickness of the specimen used for the measurement was 3.2 mm. Impact strength was measured by making a notch in a 3.2mm-thick specimen according to ASTM D256 (unit: kgf·cm/cm). The solidification rate is set to the melting temperature of the filament composition at 200°C, the initial speed of 15 mm/s, the printing speed of 110 mm/s, and the time to print a layer of 20 seconds, and the time required to lower the temperature of the manufactured shape to 110°C. Measured.

Synthetic resin Phosphorescent Pigment
(Content per 100 parts by weight of synthetic resin) Impact strength
(kgf cm/cm) Solidification time
(sec)


100

5 15 211 10 14 188 20 13 169 50 12 145 100 10 137 120 5 126

From the results of Table 1 above, it can be seen that as the content ratio of the phosphorescent pigment increases, the impact strength decreases. In addition, the specimen prepared using a filament containing 120 parts by weight of a phosphorescent pigment with respect to 100 parts by weight of the synthetic resin had an impact strength of 5 kgf·cm/cm. Accordingly, it can be seen that proper impact strength is maintained when the phosphorescent pigment is mixed in less than 100 parts by weight with respect to 100 parts by weight of the synthetic resin. However, when the phosphorescent pigment is less than 20 parts by weight based on 100 parts by weight of the synthetic resin, there is a disadvantage in that the luminous efficiency is lowered by the photoluminescence, and thus the function of the photoluminescent filament cannot be performed. In addition, it can be seen that the solidification rate decreases as the content ratio of the phosphorescent pigment increases.

When the measurement results of Table 1 are summarized, it was found that the phosphorescent pigment had an appropriate impact strength and solidification rate when the luminescent pigment was 20 parts by weight or more and 100 parts by weight or less with respect to 100 parts by weight of the synthetic resin.

Zion pigments are thermochromic paints that change color according to temperature, and have a characteristic of expressing their own color when the temperature is below a preset threshold and becoming transparent when the temperature is above the threshold.

There are grades that change color by temperature from -15℃ to 65℃, and there are pigments that change when the temperature rises from 20℃ to 2℃, and pigment grades that change at 31℃, 43℃, and 65℃.

In the case of blue zion pigment (BT-20) that changes color at 20℃, it looks blue under 20℃, but disappears when it reaches 22℃.

Orange Zion Pigment (OT-31) that changes at 31℃ completely loses its color at 35℃ when heat is applied. In the case of the Zion pigment, it is a pigment that also changes according to a person's body temperature.

In the case of red Zion Pigment (RT-43) that changes at 43℃, the color disappears at about 47℃ when heat of 43℃ is applied.

In the present invention, the three Zion pigments (Blue Zion Pigment (BT-20), Orange Zion Pigment (OT-31), Red Zion Pigment (RT-43)) having a temperature difference are mixed to bring results for each temperature. I can.

In more detail, the color changes at 25℃ by combining the 20℃ Zion Pigment, 31℃ Zion Pigment, and 43℃ Zion Pigment, and then to another color at 35℃, and to another color when the temperature rises above 45℃. do. The Zion pigment is red at 43°C and becomes transparent at 45°C or higher. By applying this, it is not only easy to identify the temperature, but also it is possible to ensure user safety by warning of danger.

If, with respect to 100 parts by weight of the synthetic resin, if less than 20 parts by weight of Zion pigment is included, it is not easy to recognize the change in color according to temperature, and if it contains more than 30 parts by weight, the reduction of other components Craters and pinholes may occur.

The inorganic filler plays a role in improving strength, bonding strength, moisture stability and durability, and is made by mixing bentonite powder, sepiolite powder, and petalite powder.

More specifically, 30 to 70 parts by weight of sepiolite powder and 20 to 30 parts by weight of petalite powder are mixed with respect to 100 parts by weight of bentonite powder.

Bentonite powder absorbs water or moisture, plays a role of controlling viscosity, and it is preferable to use a powder having a particle diameter of 0.5 to 1 μm.

Sepiolite powder increases elongation and serves to enhance moisture stability, and it is preferable to use a powder having a particle diameter of 0.1 to 0.2 μm.

Petalite powder serves to reduce drying shrinkage and increase durability, and it is preferable to use a powder having a particle diameter of 0.1 to 0.2 μm.

If, with respect to 100 parts by weight of the synthetic resin, if less than 5 parts by weight of an inorganic filler is included, it is difficult to improve strength, bonding strength, moisture stability and durability, and if it contains more than 10 parts by weight, it is brittle due to excessive increase in hardness. Breaking occurs due to weakening.

Flame retardants affect the stability of thermoplastics during processing in the molten state. The flame retardant must be used in a large amount in order to satisfy the flame retardancy to be suitable for plastics according to international standards. However, if a large amount is used, the processing stability of the plastic may be impaired due to the flame retardant. For example, polymer degradation, crosslinking reactions, gas evolution or decolorization can be increased. In addition, a halogen-based gas is generated by thermal decomposition during processing, which may lead to corrosion of devices such as molding machines and molds, and deterioration of the work environment due to toxic gases.

As a flame retardant added to the synthetic resin in the present invention, a bromine-based flame retardant may be used.

It is preferable that the brominated flame retardant contains at least one selected from the group consisting of brominated polycarbonate oligomers, brominated epoxy oligomers, and brominated polyacrylates.

If, with respect to 100 parts by weight of the synthetic resin, if less than 2 parts by weight of the flame retardant is included, it is difficult to expect a flame retardant effect, and if it contains more than 10 parts by weight, it is likely to be decomposed or cause defects in the molded product.

As additives, antibacterial agents, ultraviolet stabilizers, antioxidants, optical brighteners, dispersants, release agents, and heat-resistant stabilizers may be used.

First, the antibacterial agent performs various antibacterial, purifying, and deodorizing functions, and activated carbon powder may be used in the present invention.

The activated carbon powder is made of a carbon material through a combustion method by high heat treatment, such as leaves and stems, plant shells, plant roots, and fruits of plants and cultivated plants living in nature, and the carbon agent is 0.5 using a fine powder. It is processed into powder with a particle diameter of ~1.0㎛ and then subjected to high heat treatment. It emits far-infrared rays in the range of 10 to 100㎛ and sterilizes harmful bacteria. It performs various antibacterial, purifying, and deodorizing functions.

The UV stabilizer serves to suppress the color change and light reflectivity of the composition according to UV irradiation, and at least one selected from the group consisting of benzotriazole-based, benzophenone-based, and triazine-based may be used.

As the antioxidant, one or two or more of aromatic amine series, phenol series, and phosphite series may be used.

The optical brightener serves to improve the light reflectance of the polycarbonate resin composition, and 4-(benzoxazol-2-yl)-4'-(5-methylbenzoxazol-2-yl)stilbene or Stilben-bisbenzoxazole derivatives such as 4,4'-bis(benzooxazol-2-yl)stilbene may be used.

The dispersant has a function of modifying physical properties, and one or two or more of an ammonium salt, an active amine, an organic acid, and an inorganic acid may be used.

As the releasing agent, a fluorine-containing polymer, silicone oil, a metal salt of stearylic acid, a metal salt of montanic acid, a montanic acid ester wax, or a polyethylene wax may be used.

As the heat-resistant stabilizer, a pentaerythritol type diphosphite compound may be used.

If, with respect to 100 parts by weight of the synthetic resin, if the additive is included in less than 2 parts by weight, it is difficult to expect the effect of each additive, and if it is included in more than 10 parts by weight, the main characteristics due to the reduction of other components, such as phosphorescence and It is difficult to fully expect the effect of Zion pigment.

According to the present invention, there is an advantage of being able to produce a shape that emits light in a dark place through a phosphorescent pigment using a 3D printer, and it is easy to identify the temperature according to the Zion pigment, as well as to ensure the safety of users by warning of danger. I can.

In addition, the inorganic filler is contained to improve strength, bonding force, moisture stability and durability, and the flame retardant is contained to produce a 3D shape that is not easily burned by fire.

1 is a step flow diagram showing a manufacturing process of a photoluminescent filament for a 3D printer using a photoluminescent filament composition for a 3D printer according to the present invention.

1, the photoluminescent filament for a 3D printer using the photoluminescent filament composition for a 3D printer according to the present invention comprises a material preparation step (S10), a material mixing step (S20), and an extrusion step (S30).

1. Material preparation step (S10)

The material preparation step (S10) is a step of preparing synthetic resin, phosphorescent pigment, Zion pigment, inorganic filler, flame retardant, and additives, respectively.

Synthetic resins include 30 to 70 parts by weight of polylactic acid (PLA), 30 to 50 parts by weight of polyamide, and polyvinyl based on 100 parts by weight of acrylonitrile butadiene styrene (ABS). Prepare a material by mixing 30-50 parts by weight of alcohol (PVA, Poly Vinyl Alcohol) and 30-50 parts by weight of polycarbonate (PC).

As a phosphorescent pigment, based on 100 parts by weight of aluminum oxide, 30 to 50 parts by weight of calcium carbonate, 20 to 30 parts by weight of strontium carbonate, 15 to 20 parts by weight of boric acid, 3 to 5 parts by weight of didisprosium trioxide, and diuropium trioxide A strontium aluminate pigment containing 1 to 2 parts by weight is used, but with respect to 100 parts by weight of the photoluminescent pigment, 3 to 7 parts by weight of a fluorinated ethylene propylene (FEP) copolymer are mixed to coat the surface of the photoluminescent pigment. Prepare.

As a Zion pigment, a blue Zion pigment that changes color at 20℃ (BT-20), an orange Zion pigment that changes at 31℃ (OT-31), and a red Zion pigment that changes at 43℃ (RT-43) is prepared as a material. do.

As an inorganic filler, 30 to 70 parts by weight of sepiolite powder and 20 to 30 parts by weight of petalite powder are mixed with respect to 100 parts by weight of bentonite powder to prepare a material.

As a flame retardant, a brominated flame retardant is prepared as a material.

As additives, antibacterial agents, ultraviolet stabilizers, antioxidants, optical brighteners, dispersants, release agents, and heat-resistant stabilizers are prepared as materials.

2. Material mixing step (S20)

The material mixing step (S20) is a step of mixing the material prepared in the material preparation step (S10) at an appropriate ratio.

With respect to 100 parts by weight of the synthetic resin, 20 to 100 parts by weight of a photoluminescent pigment, 20 to 30 parts by weight of Zion pigment, 5 to 10 parts by weight of an inorganic filler, 2 to 10 parts by weight of a flame retardant, and 2 to 10 parts by weight of an additive are mixed.

3. Extrusion step (S30)

Extrusion step (S30) is a step of extruding the material mixture mixed in the material mixing step (S20) through an extrusion device to produce a photoluminescent filament for a 3D printer in the form of a wire.

Specifically, the extruder is maintained at a temperature of 180 to 230°C, which is a meltable temperature of the synthetic resin, and pressurizes the input material mixture to extrude it into a thread form. At this time, the filament in the form of a thread discharged from the extruder is cooled using a cooling water bath and then wound on a bobbin.

At this time, the diameter of the photoluminescent filament for a 3D printer according to an embodiment of the present invention may be 1.50 ~ 3.0mm, preferably 1.75 ~ 2.0mm. If the diameter of the filament is less than 1.50 mm, it is difficult to manufacture a print head that pushes the filament, and the printing speed is too slow, and if it exceeds 3.0 mm, the solidification speed is slow and the printing line is thick, which is not preferable because the precision of the product decreases.

According to the present invention, there is an advantage of being able to produce a shape that emits light in a dark place by photoluminescence using a 3D printer.

Although the preferred embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and it should be understood that the scope of the present invention extends to the scope substantially equal to the embodiment of the present invention. Various modifications may be made by those of ordinary skill in the technical field to which the present invention pertains within the scope not departing from the spirit of the invention.

Claims (4)

For 100 parts by weight of synthetic resin,
20 to 100 parts by weight of phosphorescent pigment,
20 to 30 parts by weight of Zion pigment,
5 to 10 parts by weight of inorganic filler,
Flame retardant 2 to 10 parts by weight and
Including 2 to 10 parts by weight of additives,
The synthetic resin,
Based on 100 parts by weight of acrylonitrile butadiene styrene (ABS), 30 to 70 parts by weight of polylactic acid (PLA), 30 to 50 parts by weight of polyamide (PA), polyvinyl alcohol (PVA) , Poly Vinyl Alcohol) 30-50 parts by weight and polycarbonate (PC) 30-50 parts by weight are mixed and used,
The phosphorescent pigment,
Based on 100 parts by weight of aluminum oxide, 30 to 50 parts by weight of calcium carbonate, 20 to 30 parts by weight of strontium carbonate, 15 to 20 parts by weight of boric acid, 3 to 5 parts by weight of didisprosium trioxide, and 1 to 2 parts by weight of diuropium trioxide Using a strontium aluminate-based pigment containing part,
The particle size of the phosphorescent pigment is 3 ~ 5㎛,
With respect to 100 parts by weight of the photoluminescent pigment, 3 to 7 parts by weight of a fluorinated ethylene propylene (FEP) copolymer are mixed to coat the surface of the photoluminescent pigment,
The Zion pigment,
Including Blue Zion Pigment (BT-20), Orange Zion Pigment (OT-31) and Red Zion Pigment (RT-43),
The inorganic filler,
With respect to 100 parts by weight of bentonite powder having a particle diameter of 0.5 to 1㎛, 30 to 70 parts by weight of sepiolite powder having a particle diameter of 0.1 to 0.2㎛, 20 to 30 parts by weight of petalite powder having a particle diameter of 0.1 to 0.2㎛ Includes,
The flame retardant,
Including at least one selected from the group consisting of brominated polycarbonate oligomer, brominated epoxy oligomer, and brominated polyacrylate,
As the additive, an antibacterial agent, an ultraviolet stabilizer, an antioxidant, an optical brightener, a dispersant, a release agent, and a heat-resistant stabilizer are used.
The antibacterial agent uses activated carbon powder,
The ultraviolet stabilizer is used at least one selected from the group consisting of benzotriazole-based, benzophenone-based, and triazine-based,
The antioxidant uses one or two or more of an aromatic amine series, a phenol series, and a phosphite series,
The optical brightener is 4-(benzoxazol-2-yl)-4'-(5-methylbenzoxazol-2-yl)stilbene or 4,4'-bis(benzooxazol-2-yl) Using a stilbene stilbene-bisbenzoxazole derivative,
The dispersant uses one or two or more of ammonium salt, active amine, organic acid, and inorganic acid,
The releasing agent uses a fluorine-containing polymer, silicone oil, a metal salt of stearylic acid, a metal salt of montanic acid, a montanic acid ester wax, or a polyethylene wax,
The heat-resistant stabilizer is a photoluminescent filament composition for a 3D printer, characterized in that using a pentaerythritol-type diphosphite compound. delete delete delete

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