KR102206917B1 - Polymer-enhancement particle composite resin composition, polymer-metal composite resin filament for extrusion lamination 3D printing, and manufacturing method thereof - Google Patents

Abstract

One embodiment of the present invention provides a polymer-enhancement particle composite resin composition for extrusion lamination type 3D printing, comprising: 90 to 99 vol% of a polymer material based on the total volume as a mixture of a polymer pellet and a polymer powder; and 1 to 10 vol% of biocompatible reinforcing particle powder based on the total volume, so as to improve mechanical strength and biocompatibility characteristics by improving the dispersibility of metal enhancement particles when performing extrusion lamination type 3D printing.

Description

Polymer-enhancement particle composite resin composition, polymer-metal composite resin filament for extrusion lamination 3D printing, and manufacturing method thereof }

The present invention relates to a composite resin composition for 3D printing and a filament, and more particularly, an extrusion lamination method in which a polymer material and a powder of metal or ceramic reinforcing particles having mechanical properties and biocompatibility are mixed with a polymer for 3D printing-reinforced It relates to a particle composite resin composition, a polymer-reinforced particle composite resin filament, and a manufacturing method thereof.

In general, biomaterials such as implants and stents are required to have high mechanical properties and biocompatibility.

As biomaterials such as implants and stents, metals such as Ti (titanium), high molecular materials such as ceramics and engineering plastics are used, but metals have disadvantages such as image distortion or implant movement, and ceramics have mechanical strength. It is weak and difficult to process, and the polymer resin has a problem of weak strength.

Accordingly, a material obtained by mixing metal, ceramic and polymer materials is being applied as a biomaterial.

Among these biomaterials, Ti, Co, stainless steel, alloys thereof, nickel-titanium alloy, cobalt-chromium alloy, combinations thereof, and biocompatibility reinforcing particles such as alloys or ceramics have high strength and biocompatibility, and PEEK Polymers containing engineering plastics such as (polyether ether keton) PEI (polyethyleneimine) and PAEK (polyaryletherketon: polyaniletherketon) have excellent chemical stability as well as mechanical properties such as strength and toughness. Since the high melting point is relatively stable to the heat of processing compared to other polymers, a polymer-reinforced particle mixture material such as Ti-PEEK has the advantage of being relatively easy to mold by injection molding, processing, and extrusion. Therefore, it is used as a super engineering material.

However, when the polymer-reinforced particle mixture is subjected to extrusion lamination (FDM: Fused Deposition Modeling) 3D printing, the dispersion of reinforcing particles such as metal or ceramic becomes uneven, and a non-uniform fracture surface is observed when fracture. , There was a problem that the mechanical strength and biocompatibility properties were deteriorated.

Korean Patent Registration No. 10-1750288 Japanese Patent No. 6518121

Accordingly, one embodiment of the present invention for solving the problems of the prior art described above is by improving the dispersibility of the reinforced particle powder such as biocompatible metal or ceramic in the polymer-reinforced particle composite resin filament, by extrusion lamination. Extrusion lamination method that improves mechanical strength and biocompatibility by improving the dispersibility of polymer-reinforced particles when performing 3D printing, polymer-reinforced particle composite resin composition for 3D printing, polymer-reinforced particle composite resin filament, and the like It aims to provide a manufacturing method.

One embodiment of the present invention for achieving the object of the present invention described above, as a polymer pellet and a polymer powder mixture of 90 vol% to 99 vol% of the total volume of a polymer material; And it provides a polymer-reinforced particle composite resin composition for extrusion lamination method 3D printing comprising a; 1 vol% to 10 vol% of the biocompatibility reinforced particle powder based on the total volume.

The polymer material is characterized in that it comprises 55 vol% to 95 vol% polymer pellets and 4 vol% to 44 vol% polymer powder relative to the total volume of the polymer material.

The density of the polymer material is characterized in that 1.0 g / cm ³ to 1.6 g / cm ³ .

The size of the polymer powder is characterized in that 20 μm to 30 μm.

The reinforced particle powder is any one or more of a metal powder or ceramic powder selected from the group consisting of Ti, Co, stainless steel, alloys thereof, nickel-titanium alloys, cobalt-chromium alloys, combinations thereof, or alloys thereof. To do.

The particle size of the reinforced particle powder is characterized in that 20 μm to 30 μm.

The density of the reinforced particle powder is characterized in that 4.2 g / cm ³ to 4.8 g / cm ³ .

Another embodiment of the present invention for achieving the object of the present invention described above is a polymer pellet and a polymer powder mixture of 90 vol% to 99 vol% of the total volume of a polymer material; And it provides an extrusion lamination method 3D printing polymer-reinforced particle composite resin filament prepared by extruding a mixture of 1 vol% to 10 vol% of biocompatible reinforced particles based on the total volume.

The polymer material is characterized in that it comprises 55 vol% to 95 vol% polymer pellets and 4 vol% to 44 vol% polymer powder relative to the total volume of the polymer material.

The density of the polymer material is characterized in that 1.0 g / cm ³ to 1.6 g / cm ³ .

The size of the polymer powder is characterized in that 20 μm to 30 μm.

The reinforced particle powder is any one or more of a metal powder or ceramic powder selected from the group consisting of Ti, Co, stainless steel, alloys thereof, nickel-titanium alloys, cobalt-chromium alloys, combinations thereof, or alloys thereof. To do.

The particle size of the reinforced particle powder is characterized in that 20 μm to 30 μm.

The density of the reinforced particle powder is characterized in that 4.2 g / cm ³ to 4.8 g / cm ³ .

Another embodiment of the present invention for achieving the object of the present invention described above is a polymer pellet and a polymer powder mixture of 90 vol% to 99 vol% of the polymer material and 1 vol% to 10 vol% of the total volume. Mixing a polymeric material and reinforcing particle powder to prepare a biocompatible reinforcing particle powder mixture; And a polymer-reinforced particle composite resin filament manufacturing step of extruding the polymer material and reinforced particle powder mixture to produce a polymer-reinforced particle composite resin filament for 3D printing in an extrusion lamination method. It provides a method for manufacturing a polymer-reinforced particle composite resin filament for 3D printing.

The extrusion of the polymer material and the reinforced particle powder mixture in the step of manufacturing the polymer-reinforced particle composite resin filament is characterized in that it is performed at a temperature of 340 °C to 370 °C.

The polymer material mixed in the step of mixing the polymer material and the reinforced particle powder is characterized in that it comprises 55 vol% to 95 vol% polymer pellets and 4 vol% to 44 vol% polymer powder relative to the total volume of the polymer material To do.

The polymer material mixed in the step of mixing the polymer material and the reinforced particle powder is characterized in that the density is 1.0 g/cm ³ to 1.6 g/cm ³ .

The size of the polymer powder to be mixed in the step of mixing the polymer material and the reinforcing particle powder is characterized in that 20 μm to 30 μm.

The reinforcing particle powder mixed in the step of mixing the polymer material and the reinforcing particle powder is in the group consisting of Ti, Co, stainless steel, alloys thereof, nickel-titanium alloy, cobalt-chromium alloy, combinations thereof, or alloys thereof. It is characterized in that at least one of selected metal powder or ceramic powder.

The particle size of the reinforced particle powder mixed in the step of mixing the polymer material and the reinforced particle powder is characterized in that 20 μm to 30 μm.

The density of the reinforced particle powder mixed in the step of mixing the polymer material and the reinforced particle powder is 4.2 g/cm ³ to 4.8 g/cm ³ .

The diameter of the polymer-reinforced particle composite resin filament prepared in the manufacturing step of the polymer-reinforced particle composite resin filament is characterized in that 1 mm to 3 mm.

One embodiment of the present invention described above is to improve the dispersibility of the reinforced particle powder as a biocompatible metal or ceramic reinforced particle in the polymer-reinforced particle composite resin filament. By improving dispersibility, it provides an effect of improving the strength and biocompatibility of an implant manufactured by extrusion lamination type 3D printing.

1 is a photograph of a PEEK pellet, which is an example of a polymer pellet.
2 is a TGA analysis graph of a PEEK-metal composite prepared from a mixture of different PEEK pellets, PEEK powder and Ti powder having different PEEK powder content according to an embodiment of the present invention.
3 is a DSC analysis graph of a PEEK-metal composite prepared from a mixture of different PEEK pellets, PEEK powder, and Ti powder having different PEEK powder content according to an embodiment of the present invention.
4 is an XRD analysis graph of a PEEK-metal composite prepared from a mixture of different PEEK pellets, PEEK powder, and Ti powder having different PEEK powder content according to an embodiment of the present invention.
5 is a photograph of a fracture surface of a PEEK-metal composite resin filament made of a mixture of different PEEK pellets, PEEK powder, and Ti powder having different PEEK powder content according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be implemented in various different forms, and therefore is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, bonded)" with another part, it is not only "directly connected", but also "indirectly connected" with another member in the middle. "Including the case. In addition, when a part "includes" a certain component, this means that other components may be further provided, not excluding other components, unless specifically stated to the contrary.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In an embodiment of the present invention, in order to improve the physical properties of a polymer material-based composite including engineering plastics having excellent mechanical and chemical resistance, biocompatible metal or ceramic reinforcing particle powder having mechanical properties and biocompatibility is mixed. It provides a polymer-reinforced particle composite resin composition for 3D printing, a polymer-reinforced particle composite resin filament, and a manufacturing method thereof.

The extrusion-laminated polymer-reinforced particle composite resin composition for 3D printing according to an embodiment of the present invention is a mixture of polymer pellets and polymer powders, and 90 vol% to 99 vol% of polymer materials and 1 vol% to 10 vol It characterized in that it comprises a;% biocompatibility reinforcing particle powder.

The extrusion lamination method 3D printing polymer-reinforced particle composite resin filament according to another embodiment of the present invention is a mixture of polymer pellets and polymer powder, comprising a polymer material of 90 vol% to 99 vol% of the total volume; And 1 vol% to 10 vol% of the biocompatibility reinforced particle powder mixture based on the total volume.

In another embodiment of the present invention, a method for manufacturing a polymer-reinforced particle composite resin filament for 3D printing by extrusion lamination method is a mixture of polymer pellets and polymer powder, with a polymer material of 90 vol% to 99 vol% of the total volume and 1 vol% of the total volume. To prepare a polymer-reinforced particle composite resin filament for 3D printing by extrusion lamination method by extruding the polymer material and reinforced particle powder mixing step of preparing a biocompatible reinforced particle powder mixture of to 10 vol% and the polymer material and reinforced particle powder mixture It characterized in that it comprises a polymer-reinforced particle composite resin filament manufacturing step.

The polymer material may include 55 vol% to 95 vol% PEEK (polyether ether keton) pellets and 4 vol% to 44 vol% PEEK powder relative to the total volume of the polymer material.

The polymer material is characterized in that it comprises 55 vol% to 95 vol% polymer pellets and 4 vol% to 44 vol% polymer powder relative to the total volume of the polymer material.

The density of the polymer material is characterized in that 1.0 g / cm ³ to 1.6 g / cm ³ .

The size of the polymer powder is characterized in that 20 μm to 30 μm.

The reinforced particle powder is any one or more of a metal powder or ceramic powder selected from the group consisting of Ti, Co, stainless steel, alloys thereof, nickel-titanium alloys, cobalt-chromium alloys, combinations thereof, or alloys thereof. To do.

The particle size of the reinforced particle powder is characterized in that 20 μm to 30 μm.

The density of the reinforced particle powder is characterized in that 4.2 g / cm ³ to 4.8 g / cm ³ .

The extrusion of the polymer material and the reinforced particle powder mixture in the step of preparing the polymer-reinforced particle composite resin filament may be performed at a temperature of 340°C to 370°C.

The diameter of the polymer-reinforced particle composite resin filament prepared in the manufacturing step of the polymer-reinforced particle composite resin filament may be 1 mm to 3 mm, preferably 1.75 mm.

<Experimental Example>

[Table 1]

The experimental example of the present invention is an example of a polymer material, as an example of a PEEK pellet and a biocompatibility reinforcing particle powder, as an example of a polymer material powder added to improve dispersibility of Ti powder and Ti powder in a polymer material. By mixing PEEK powder in the ratio of [Table 1], an extrusion lamination method 3D printing polymer-reinforced particle composite resin composition having five different compositions was prepared, and each of the produced extrusion lamination method 3D printing polymers-reinforced The particle composite resin composition was extruded using an extruder to prepare a polymer-reinforced particle composite resin composite and a polymer-reinforced particle composite resin filament for 3D printing by extrusion lamination method.

1 shows a picture of a PEEK pellet, which is an example of a polymer pellet.

Then, TGA (thermo gravimetric analysis) analysis, DSC (differential scanning calorimetry) analysis, and XRD (X-ray Diffraction) analysis were performed on the prepared composite, and SEM photographing of the fracture surface was performed on the prepared filament.

Density of the powder is mixed and PEEK pellet is 1.3g / cm3, was the density of the Ti powder is 4.5 g / cm ^3. And the particle size of the PEEK powder and the Ti powder was 20 μm to 30 μm.

PEEK-Ti composite resin filament is made of PEEK and titanium mixed using an extruder under the conditions of 365°C/355°C/340°C, respectively, and an extrusion speed of 3.0 rpm for 3 sections of the extruder. Powder is added to produce a composite and a filament having a diameter of 1.75 mm at the same time.

1. TGA(Thermo gravimetric analysis) analysis

TGA (Thermo gravimetric analysis) analysis under the conditions of a heating rate of 10 °C/min, an equilibrium temperature of 35 °C, and a temperature range of 35 °C to 1,200 °C for the composites of Examples 1 to 5 having the composition of [Table 1] To check the mixed state of PEEK and Ti powder.

2 is a TGA analysis graph of a PEEK-metal composite prepared from a mixture of different PEEK pellets, PEEK powder, and Ti powder having different PEEK powder contents according to an embodiment of the present invention.

As shown in FIG. 2, in the case of 100 vol% PEEK, it was confirmed that the weight% was close to 52.61% when the temperature was raised to a maximum of 1,200 °C.

In addition, five composites having different amounts of PEEK powder were prepared and subjected to TGA thermal analysis to remove organic substances in the PEEK/Ti metal composite, and then the final remaining inorganic mass was measured and converted into volume% (volume%).

As shown in (a) of FIG. 2, when the PEEK powder was not added (PEEK-P0), the mass of the remaining inorganic material was lower than that of the initial titanium addition composition.

In contrast, as shown in (b) to (e) of Fig. 2, the PEEK powder is 15 vol% (Fig. 2 (b)), 25 vol% (Fig. 2 (c)), 30 vol% (Fig. In the case of the composite in which (d)) and 45 vol% ((e) of FIG. 2) were mixed together, it was confirmed that the mass of the remaining inorganic matter was converted to vol% and a value close to the added composition.

Therefore, it was confirmed that there was no reaction due to the physical mixing of the polymers PEEK and Ti in all five examples.

2. DSC (Differential scanning calorimetry) analysis

In order to check the temperature conditions at which the phase change of the polymer-reinforced particle composite resin filament for extrusion lamination method 3D printing prepared according to the example of the present invention using the specimens of Examples 1 to 5 above, DSC analysis was performed by raising the temperature to an equilibrium temperature of 35° C., a temperature increase rate of 10° C./min, and a temperature range of 35° C. to 400° C.

3 is a DSC analysis graph of a PEEK-metal composite prepared from a mixture of PEEK pellets, PEEK powders and Ti powders having different PEEK powder contents according to an embodiment of the present invention.

As shown in Figure 3, the specimens of Example 1 (PEEK-P0), Example 2 (PEEK-P15), Example 3 (PEEK-P25, Example 4 (PEEK-P25), Example 5 (PEEK-P45) The melting temperatures of these were measured to be 343.57°C, 343.82°C, 343.75°C, 343.9°C and 343.01°C, respectively.

It was confirmed that all the specimens of Examples 1 to 5 had the same melting temperature, and accordingly, it was confirmed that the temperature conditions at which the phase change occurs when used for 3D printing can be set the same.

3. XRD analysis

For the actual phase analysis of the extrusion lamination method 3D printing polymer-reinforced particle composite resin filaments prepared in the compositions of Examples 1 to 5, XRD analysis was performed on the composite specimens of Examples 1 to 5.

4 is an XRD analysis graph of a PEEK-metal composite prepared from a mixture of PEEK pellets, PEEK powders, and Ti powders having different PEEK powder contents according to an embodiment of the present invention.

As shown in FIG. 4, it was confirmed that the phase change of PEEK and Ti powder did not occur in the extrusion process since the peak of the phase due to PEEK and Ti was not detected.

4. Organizational Analysis

In order to check whether the dispersion of Ti powder is uniformly distributed based on the TG results for the composites having the compositions of Examples 1 to 5, a mixture of PEEK pellets having the composition of Examples 1 to 5-PEEK powder and Ti powder was extruded. Using a PEEK-Ti composite resin filament having a diameter of 1.75 mm was prepared, and then the fracture surface of the filament was observed using SEM.

5 is a view showing an SEM photograph of a fracture surface of a PEEK-metal composite resin filament made of a mixture of different PEEK pellets, PEEK powder, and Ti powder having different PEEK powder contents according to an embodiment of the present invention.

As shown in FIG. 5, when PEEK powder is not added and only PEEK pellets are added (PEEK-P0), the Ti powders 20 in the PEEK base 10 are skewed to one side (dotted circle area) and are uniform when fractured. An unbroken surface was observed.

In contrast, when the content of PEEK powder was added up to 40 vol%, it was confirmed that the Ti powder 20 was uniformly distributed throughout the PEEK matrix.

It was confirmed that as the actual PEEK powder content increased to 40 vol%, the dispersion of Ti powder was improved compared to the specimen without the addition of PEEK powder.

5. Observing the diameter

The diameter of the PEEK-Ti composite resin filament for 3D printing of 1.75mm extrusion lamination method prepared by applying the PEEK-Ti composite resin composition having the composition of Examples 1 to 5 was measured in an extruder.

As a result of the measurement, in the case of Example 1 in which the PEEK powder was not mixed, the diameter was uneven, but it was confirmed that the filaments made of the compositions of Examples 2 to 5 in which the PEEK powder was mixed had a uniform diameter distribution close to 1.75 mm as a whole. . That is, when PEEK powder was added, it was confirmed that the entire diameter of the filament was made evenly by uniformly dispersing the Ti powder in the PEEK matrix during extrusion by the extruder.

According to the experimental example of the present invention as described above, when PEEK powder was mixed, there was no reaction due to physical mixing of the polymer PEEK and Ti, but when the PEEK powder was not added, it was confirmed that uniform dispersion did not occur during the extrusion process.

That is, in the case of manufacturing a polymer-reinforced particle composite resin filament for 3D printing by extrusion lamination method for implant molding using an engineering plastic material such as PEEK, the present invention relates to mixing the polymer powder with the polymer pellet and the biocompatibility reinforced particle powder. When extruded, the polymer powder facilitates melting of the polymer pellets, thereby providing a stable dispersion technology capable of producing a filament having a uniform composition in which the reinforcing particle powder is uniformly dispersed in a polymer substrate.

Although the technical idea of the present invention described above has been specifically described in the preferred embodiment, it should be noted that the above-described embodiment is for the purpose of explanation and not for the limitation thereof. In addition, those of ordinary skill in the technical field of the present invention will be able to understand that various embodiments are possible within the scope of the technical idea of the present invention. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

10: PEEK base
20: Ti powder

Claims (24)

Polymer pellets and polymer powder mixture of 90 vol% to 99 vol% of a polymer material based on the total volume; And
It characterized in that it comprises a; biocompatibility reinforced particle powder of 1 vol% to 10 vol% of the total volume,
It characterized in that it comprises 55 vol% to 95 vol% polymer pellets and 4 vol% to 44 vol% polymer powder relative to the total volume of the polymer material,
The polymer pellet is a PEEK pellet and the polymer powder is a polymer-reinforced particle composite resin composition for extrusion lamination method 3D printing, characterized in that the PEEK powder. delete The method of claim 1,
Extrusion lamination method 3D printing polymer-reinforced particle composite resin composition, characterized in that the density of the polymer material is 1.0 g / cm ³ to 1.6 g / cm ³ . The method of claim 1,
Extrusion lamination method 3D printing polymer-reinforced particle composite resin composition, characterized in that the size of the polymer powder is 20 μm to 30 μm. The method of claim 1, wherein the reinforcing particle powder,
Extrusion lamination method, characterized in that it is any one or more of metal powder or ceramic powder selected from the group consisting of Ti, Co, stainless steel, alloys thereof, nickel-titanium alloy, cobalt-chromium alloy, combinations thereof, or alloys thereof Polymer-reinforced particle composite resin composition for 3D printing. The method of claim 1,
Extrusion lamination method 3D printing polymer-reinforced particle composite resin composition, characterized in that the particle size of the reinforced particle powder is 20 μm to 30 μm. The method of claim 1,
Extrusion lamination method 3D printing polymer-reinforced particle composite resin composition, characterized in that the density of the reinforced particle powder is 4.2 g/cm ³ to 4.8 g/cm ³ . Polymer pellets and polymer powder mixture of 90 vol% to 99 vol% of a polymer material based on the total volume; And characterized in that produced by extruding a mixture of biocompatible reinforcing particles of 1 vol% to 10 vol% of the total volume,
It characterized in that it comprises 55 vol% to 95 vol% polymer pellets and 4 vol% to 44 vol% polymer powder relative to the total volume of the polymer material,
The polymer pellet is a PEEK pellet and the polymer powder is a polymer-reinforced particle composite resin filament for extrusion lamination method 3D printing, characterized in that the PEEK powder. delete The method of claim 8,
Extrusion lamination method 3D printing polymer-reinforced particle composite resin filament, characterized in that the density of the polymer material is 1.0 g / cm ³ to 1.6 g / cm ³ . The method of claim 8,
The size of the polymer powder is an extrusion lamination method 3D printing polymer-reinforced particle composite resin filament, characterized in that the size of 20 μm to 30 μm. The method of claim 8, wherein the reinforcing particle powder,
Extrusion lamination method, characterized in that it is any one or more of metal powder or ceramic powder selected from the group consisting of Ti, Co, stainless steel, alloys thereof, nickel-titanium alloy, cobalt-chromium alloy, combinations thereof, or alloys thereof Polymer-reinforced particle composite resin filament for 3D printing. The method of claim 8,
Extrusion lamination method 3D printing polymer-reinforced particle composite resin filament, characterized in that the particle size of the reinforced particle powder is 20 μm to 30 μm. The method of claim 8,
The density of the reinforced particle powder is 4.2 g/cm ³ to 4.8 g/cm ³ , wherein the polymer-reinforced particle composite resin filament for extrusion lamination method 3D printing. The method of claim 8,
The diameter of the filament is an extrusion lamination method 3D printing polymer-reinforced particle composite resin filament, characterized in that 1 mm to 3 mm. Mixing a polymeric material and reinforced particle powder to prepare a mixture of polymeric pellets and polymer powders of 90 vol% to 99 vol% of polymer material and 1 vol% to 10 vol% of biocompatibility reinforced particle powder based on the total volume ; And
It characterized in that it comprises a; a polymer-reinforced particle composite resin filament manufacturing step of extruding the polymer material and reinforced particle powder mixture to produce a polymer-reinforced particle composite resin filament for extrusion lamination type 3D printing,
The polymer material mixed in the step of mixing the polymer material and the reinforced particle powder is characterized in that it comprises 55 vol% to 95 vol% polymer pellets and 4 vol% to 44 vol% polymer powder relative to the total volume of the polymer material And
The polymer pellet is a PEEK pellet and the polymer powder is a polymer-reinforced particle composite resin filament manufacturing method for extrusion lamination method 3D printing, characterized in that the PEEK powder. The method of claim 16,
Extrusion of the polymer material and the reinforced particle powder mixture in the polymer-reinforced particle composite resin filament manufacturing step,
Extrusion lamination method 3D printing polymer-reinforced particle composite resin filament manufacturing method, characterized in that carried out at a temperature of 340 ℃ to 370 ℃. delete The method of claim 16,
The polymer material mixed in the step of mixing the polymer material and the reinforcing particle powder,
Extrusion lamination method 3D printing polymer-reinforced particle composite resin filament manufacturing method, characterized in that the density is 1.0 g / cm ³ to 1.6 g / cm ³ . The method of claim 16,
Extrusion lamination method 3D printing polymer-reinforced particle composite resin filament manufacturing method, characterized in that the size of the polymer powder mixed in the step of mixing the polymer material and the reinforced particle powder is 20 μm to 30 μm. The method of claim 16, wherein the reinforcing particle powder mixed in the step of mixing the polymer material and the reinforcing particle powder,
Extrusion lamination method, characterized in that it is any one or more of metal powder or ceramic powder selected from the group consisting of Ti, Co, stainless steel, alloys thereof, nickel-titanium alloy, cobalt-chromium alloy, combinations thereof, or alloys thereof 3D printing polymer-reinforced particle composite resin filament manufacturing method. The method of claim 16,
Extrusion lamination method 3D printing polymer-reinforced particle composite resin filament manufacturing method, characterized in that the particle size of the reinforced particle powder mixed in the step of mixing the polymer material and the reinforced particle powder is 20 μm to 30 μm. The method of claim 16,
Extrusion lamination method 3D printing polymer-reinforced particle composite resin filament production, characterized in that the density of the reinforced particle powder mixed in the step of mixing the polymer material and the reinforced particle powder is 4.2 g/cm ³ to 4.8 g/cm ³ Way. The method of claim 16,
Extrusion lamination method 3D printing polymer-reinforced particle composite resin filament manufacturing method, characterized in that the diameter of the polymer-reinforced particle composite resin filament prepared in the manufacturing step of the polymer-reinforced particle composite resin filament is 1 mm to 3 mm .

Images