Novel material for 5G optical communication ceramic ferrule and preparation method and application thereof

Abstract

The invention belongs to the technical field of ceramic materials, and particularly relates to a novel material for a 5G optical communication ceramic ferrule and a preparation method and application of the novel material. The novel material comprises the following raw material components in parts by weight: 70-90 parts of mullite powder; 10 to 20 parts of feldspar powder; 0.5-5 parts of cooked talc or dolomite powder; 1-5 parts of zirconium oxide powder; the mullite powder is prepared from aluminum oxide and silicon oxide, and the particle size of the mullite powder is smaller than 100 nm. According to the invention, the nanoscale mullite is used as a main body, and a proper amount of feldspar powder, a small amount of cooked talc or dolomite and zirconium oxide are added, so that the obtained novel material is used in the 5G optical communication ceramic ferrule, has the advantages of good stability, high precision, excellent aging resistance and low cost, and is an ideal material for a new generation of ceramic ferrules.

Description

Technical Field

[0001] The present invention belongs to the technical field of ceramic materials, and specifically relates to a new material for 5G optical communication ceramic ferrule and a preparation method and application thereof. Background Art

[0002] 5G optical communication ceramic ferrule, also known as fiber optic ceramic ferrule or ceramic pin body, is a key component in the fiber optic connector plug. It is used to achieve the physical docking of optical fibers and ensure that the two end faces of the optical fibers can be accurately docked, so that the optical signal can be transmitted continuously to form an optical path. In the 5G optical communication system, the ceramic ferrule plays a vital role as the core component of the fiber optic connector.

[0003] At present, ceramic ferrules are mainly made of zirconium dioxide (ZrO2) powder material injection molding. Zirconium dioxide material has the characteristics of high hardness, high melting point, and wear resistance, so that the ceramic ferrule obtained can maintain a high-precision docking effect. However, with the continuous development of solid-state battery technology, the market demand for zirconium oxide is increasing, which makes its price continue to rise. And because the amount of zirconium dioxide used in ceramic ferrules is large, this also directly affects the manufacturing cost of ceramic ferrules. At the same time, although zirconium dioxide has excellent mechanical properties and chemical stability, its tetragonal phase is easily affected by the external high temperature and high humidity environment and transforms to a monoclinic phase, which easily leads to volume shrinkage and stress generation, which not only affects the anti-aging performance of zirconium dioxide ceramic materials, but also has a short service life. After the phase change, it will affect the accuracy and stability of the ceramic ferrule, and to a certain extent increase the optical fiber loss, and the performance is greatly reduced. Therefore, it is necessary to seek a new type of ceramic powder that can replace zirconium dioxide and can be used in 5G optical communication ceramic ferrules. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a new material for 5G optical communication ceramic ferrule and a preparation method and application thereof. The new material is mainly composed of mullite. The obtained new material is used in 5G optical communication ceramic ferrule, has good stability, high precision, excellent anti-aging performance, long service life, low cost, and can effectively solve the deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: The first object of the present invention is to provide a new material for 5G optical communication ceramic ferrule, wherein the new material comprises the following raw material components by weight: Mullite powder 70-90 parts; 10-20 parts of feldspar powder; 0.5-5 parts of cooked talc or dolomite powder; 1-5 parts of zirconium oxide powder; The mullite powder is prepared from aluminum oxide and silicon oxide, and has a particle size of less than 100 nm.

[0006] Specifically, the particle size of the feldspar powder is 1-10 μm; The particle size of the cooked talc or dolomite powder is 0.5-3 μm; The particle size of the zirconium oxide powder is 0.1-1 μm.

[0007] Mullite has high hardness, melting point and thermal stability, excellent acid and alkali resistance and good insulation, can maintain the original physical properties in high temperature environment, and improve the high temperature stability, wear resistance, corrosion resistance and insulation of the material; feldspar contains components such as barium and potassium, which can effectively reduce the sintering temperature, prevent abnormal growth of material grains, optimize the internal structure of the material, and reduce the attenuation of optical signals during transmission; talc or dolomite can enhance the density and precision of ceramics, and at the same time reduce the thermal expansion and contraction properties of the products, and improve the stability to temperature changes; zirconium oxide has high chemical stability, high hardness and wear resistance, high toughness and electrical insulation, and is a good raw material for ceramic ferrules, but due to its high cost, a small amount of zirconium oxide is added in the present invention as a reinforcing agent, which can enhance the material properties and achieve a dispersion effect at the same time. Therefore, the new material of the present invention takes nano-scale mullite as the main component, and adds an appropriate amount of feldspar powder, a small amount of talc or dolomite and zirconium oxide. The obtained new material has a small particle size and excellent overall performance. It is used to prepare 5G optical communication ceramic ferrules, has good density, high precision, excellent anti-aging performance, and can also greatly reduce costs.

[0008] Further, in the above technical scheme, the preparation method of the mullite powder is: after mixing aluminum oxide and silicon oxide, add a small amount of water and grind for 40-50 minutes, put it into a sintering furnace after pressing and molding, raise the temperature to 1200-1400°C for pre-sintering for 20-30 minutes, then raise the temperature to 1600-1700°C for sintering for 30-50 minutes, and crush, grind and sieve after cooling to obtain mullite powder. The mullite powder used in the present invention is obtained by self-made means, and the product has a small and uniform particle size and stable performance, and there is no need to worry about the problem of unstable market materials.

[0009] Furthermore, in the above technical solution, the molar ratio of aluminum oxide to silicon oxide is 2-3:1-2.

[0010] Furthermore, in the above technical solution, the feldspar powder is a mixture of barium feldspar and potassium feldspar in a mass ratio of 3-5:1. In this technical solution, the feldspar is mainly barium feldspar, which can reduce the alkali metal elements such as potassium and sodium brought by potassium feldspar, improve the physical and chemical properties of the material, and at the same time, by utilizing the low linear expansion coefficient, low dielectric loss at high temperature, high strength, anti-aging and other characteristics of barium feldspar, it can ensure the high thermal stability of the material and the transmission quality of the signal, and long service life; by adding an appropriate amount of potassium feldspar, the sintering temperature of the material can be significantly reduced, the energy consumption and cost can be reduced, and at the same time, the internal grain structure of the material can be optimized to a certain extent, and the attenuation of the optical signal can be reduced.

[0011] Furthermore, in the above technical scheme, the preparation method of the barium feldspar is: after aluminum oxide, silicon oxide and barium carbonate are evenly mixed, a small amount of water is added and ground for 40-50 minutes, the mixture is pressed into cubes and stacked and placed in a sintering furnace, the temperature is raised to 950-1050°C for a first sintering, the sintering time is 60-80 minutes, and then the temperature is raised to 1180-1220°C for a second sintering, the sintering time is 30-50 minutes, and after cooling, the mixture is crushed, ground and sieved to obtain barium feldspar powder.

[0012] Furthermore, in the above technical solution, the molar ratio of aluminum oxide, silicon oxide and barium carbonate is 1:2:1-1.2.

[0013] Furthermore, in the above technical solution, the zirconium oxide is tetragonal zirconium oxide.

[0014] The second object of the present invention is to provide a method for preparing a new material for a 5G optical communication ceramic ferrule, the preparation method comprising the following steps: weighing mullite powder, feldspar powder, talc or dolomite powder, and zirconium oxide powder according to a ratio and adding them into a grinder, then adding water 0.5-1.2 times the volume of the powder, and grinding at 500-800 rpm until the powder D 50 After the particles are in the range of 0.2-0.3 μm, they are spray dried to obtain the new material powder. Specifically, the feed rate of the spray drying is 5-20 mL / min, and the hot air temperature is 150-300°C.

[0015] The present invention also provides an application of a new material for a 5G optical communication ceramic ferrule, which is used to prepare a 5G optical communication ceramic ferrule. The specific method is: putting the new material powder, a polymer thermoplastic resin, a dispersant, and a lubricant into a mixer at a temperature of 150-180°C for mixing for 90-120 minutes, and then granulating them into injection molding particles with a diameter of 2mm and a length of 2mm, and then putting them into a ceramic injection molding machine, and injecting them into the ferrule mold at a temperature of 150-180°C and a pressure of 50MPa at a speed of 80-100mm / s to obtain a ferrule blank, and finally degreasing at 400-550°C for 3-5h, and sintering at 1250-1350°C for 10-15h to obtain a 5G optical communication ceramic ferrule.

[0016] Furthermore, in the above technical solution, the mass ratio of the new material powder to the polymer thermoplastic resin, the dispersant and the lubricant is 80-90:6-15:2-3:2-4; the polymer thermoplastic resin is acrylic resin; the dispersant is stearic acid or oleic acid; and the lubricant is microcrystalline wax.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The invention optimizes the formula, takes nano-grade mullite as the main component, adds an appropriate amount of feldspar and controls the ratio of barium feldspar and potassium feldspar at the same time, can improve the strength, anti-aging performance and optical fiber loss performance of the material, reduce the sintering temperature, save energy and protect the environment; adding a small amount of talc or dolomite can enhance the density and precision of the ceramic, and can reduce the thermal expansion and contraction performance of the product, and improve the stability to temperature changes; adding a small amount of zirconium oxide as a reinforcing phase improves the dispersion effect and plays a reinforcing role at the same time, and the obtained new material powder is fine and uniform, retains the high wear resistance and hardness, high thermal stability of mullite, and also has the characteristics of anti-oxidation, high precision, low optical fiber loss and high environmental protection.

[0018] The raw materials used in the present invention have a wide range of sources, good environmental adaptability, are easy to grind, and have excellent processing performance. When used in 5G optical communication ceramic ferrules, they not only have good density and precision, and high bending strength, but also have excellent anti-aging and optical fiber loss performance. The overall performance is excellent, and can meet the performance requirements of 5G optical communication ceramic ferrules. It has a long service life and can greatly reduce production costs. It is an ideal material for the new generation of ceramic ferrules. DETAILED DESCRIPTION

[0019] The experimental methods in the following examples are conventional methods unless otherwise specified. The raw materials involved in the following examples are common commercial products and can be purchased from the market unless otherwise specified.

[0020] The above-mentioned technical features of the present invention and the technical features specifically described below (such as embodiments) can be combined with each other to form a new or preferred technical solution.

[0021] The raw materials involved in the embodiments of the present invention are either existing commercially available products or can be prepared according to existing methods, and the testing methods are industry methods.

[0022] Example 1 A new material for 5G optical communication ceramic ferrule, comprising the following raw material components by weight: Mullite powder 70 parts; 10 parts of feldspar powder; 2 parts of cooked talcum powder; 3 parts of tetragonal zirconium oxide powder; The preparation method of mullite powder is as follows: after mixing aluminum oxide and silicon oxide in a molar ratio of 3:2, adding a small amount of water and grinding for 40 minutes, pressing and molding, putting into a sintering furnace, raising the temperature to 1200°C for pre-sintering for 30 minutes, and then raising the temperature to 1600°C for sintering for 50 minutes, and after cooling, crushing, grinding, and sieving to obtain mullite powder with a particle size of less than 100 nm; The preparation method of barium feldspar is as follows: after aluminum oxide, silicon oxide and barium carbonate are mixed evenly in a molar ratio of 1:2:1, a small amount of water is added and ground for 40 minutes, the mixture is pressed into a cube and stacked and placed in a sintering furnace, the temperature is raised to 1000°C for a primary sintering, the sintering time is 80 minutes, and then the temperature is raised to 1200°C for a secondary sintering, the sintering time is 50 minutes, and after cooling, the mixture is crushed, ground and sieved to obtain barium feldspar powder with a particle size of 1-10 μm. Then, the obtained barium feldspar powder and potassium feldspar powder with a particle size of 1-10 μm are mixed in a mass ratio of 3:1 to obtain feldspar powder; The particle size of cooked talc powder is 0.5-3μm; The particle size of zirconium oxide powder is 0.1-1 μm; The preparation method comprises the following steps: Weigh mullite powder, feldspar powder, talc powder, and tetragonal zirconia powder according to the ratio and add them into the grinder. Then add 0.8 times the volume of the powder into water and grind at 500 rpm until the powder is D. 50 After the particle size is in the range of 0.2-0.3 μm, spray drying is performed at a feed rate of 5 mL / min and a hot air temperature of 150°C to obtain a new material powder.

[0023] Example 2 A new material for 5G optical communication ceramic ferrule, comprising the following raw material components by weight: 80 parts of mullite powder; 15 parts of feldspar powder; 3 parts of cooked talcum powder; 4 parts of tetragonal zirconium oxide powder; The preparation method of mullite powder is as follows: after mixing aluminum oxide and silicon oxide in a molar ratio of 2.5:1.5, adding a small amount of water and grinding for 45 minutes, pressing and molding, putting into a sintering furnace, raising the temperature to 1300°C for pre-sintering for 25 minutes, and then raising the temperature to 1650°C for sintering for 40 minutes, and after cooling, crushing, grinding, and sieving to obtain mullite powder with a particle size of less than 100 nm; The preparation method of barium feldspar is as follows: after aluminum oxide, silicon oxide and barium carbonate are mixed evenly in a molar ratio of 1:2:1.1, a small amount of water is added and ground for 45 minutes, pressed into cubes, stacked and placed in a sintering furnace, the temperature is raised to 1000°C for one-step sintering, the sintering time is 70 minutes, and then the temperature is raised to 1180°C for secondary sintering, the sintering time is 40 minutes, and after cooling, crushed, ground and sieved to obtain barium feldspar powder with a particle size of 1-10μm. Then the obtained barium feldspar powder and potassium feldspar powder with a particle size of 1-10μm are mixed in a mass ratio of 4:1 to obtain feldspar powder; The particle size of cooked talc powder is 0.5-3μm; The particle size of zirconium oxide powder is 0.1-1 μm; The preparation method comprises the following steps: Weigh mullite powder, feldspar powder, talc powder, and tetragonal zirconia powder according to the ratio and add them into the grinder. Then add 1 times the volume of the powder in water and grind at 700 rpm until the powder is D. 50 After the particle size is in the range of 0.2-0.3 μm, spray drying is performed at a feed rate of 10 mL / min and a hot air temperature of 200°C to obtain a new material powder.

[0024] Example 3 A new material for 5G optical communication ceramic ferrule, comprising the following raw material components by weight: Mullite powder 90 parts; 20 parts of feldspar powder; 5 parts of dolomite powder; 5 parts of tetragonal zirconium oxide powder; The preparation method of mullite powder is as follows: after mixing aluminum oxide and silicon oxide in a mass ratio of 3:2, adding a small amount of water and grinding for 50 minutes, pressing and molding, putting into a sintering furnace, raising the temperature to 1400°C for pre-sintering for 20 minutes, and then raising the temperature to 1700°C for sintering for 30 minutes, and after cooling, crushing, grinding, and sieving to obtain mullite powder with a particle size of less than 100 nm; The preparation method of barium feldspar is as follows: after aluminum oxide, silicon oxide and barium carbonate are mixed evenly in a molar ratio of 1:2:1.2, a small amount of water is added and ground for 50 minutes, pressed into cubes, stacked and placed in a sintering furnace, the temperature is raised to 1050°C for one-step sintering, the sintering time is 60 minutes, and then the temperature is raised to 1220°C for secondary sintering, the sintering time is 30 minutes, and after cooling, crushed, ground and sieved to obtain barium feldspar powder with a particle size of 1-10μm. Then the obtained barium feldspar powder and potassium feldspar powder with a particle size of 1-10μm are mixed in a mass ratio of 5:1 to obtain feldspar powder; The particle size of dolomite powder is 0.5-3μm; The particle size of zirconium oxide powder is 0.1-1 μm; The preparation method comprises the following steps: Weigh mullite powder, feldspar powder, dolomite powder, and tetragonal zirconia powder according to the ratio and add them into the grinder. Then add 1.2 times the volume of the powder into the grinder and grind at 800 rpm until the powder is D 50 After the particle size is in the range of 0.2-0.3 μm, spray drying is performed at a feed rate of 20 mL / min and a hot air temperature of 300°C to obtain a new material powder.

[0025] Comparative Example 1 A new material for 5G optical communication ceramic ferrule, which differs from Example 1 in that the mullite powder used is a commercially available product with a particle size of more than 5 μm, and the preparation method is the same.

[0026] Comparative Example 2 A new type of material for 5G optical communication ceramic ferrule, which is different from Example 1 in that the feldspar is potassium feldspar and the preparation method is the same.

[0027] Comparative Example 3 A new material for 5G optical communication ceramic ferrule, which differs from Example 1 in that the feldspar is barium feldspar and the preparation method is the same.

[0028] Comparative Example 4 A new material for 5G optical communication ceramic ferrule, which differs from Example 1 in that no talcum powder is added.

[0029] Comparative Example 5 A new material for 5G optical communication ceramic ferrule, which differs from Example 1 in that no zirconium oxide powder is added.

[0030] Comparative Example 6 A new type of ceramic ferrule material, comprising the following raw material components by weight: 83 parts of tetragonal zirconium oxide powder; 2 parts of cooked talcum powder; The particle size of the zirconium oxide powder is 0.1-1 μm; the particle size of the cooked talc powder is 0.5-3 μm. The preparation method is: weigh the zirconium oxide powder and the cooked talc powder according to the ratio and add them into a grinder, then add 0.8 times the volume of the powder water, grind at 500 rpm until the powder D50 is in the range of 0.2-0.3 μm, spray dry at a feed rate of 5 mL / min and a hot air temperature of 150°C to obtain a new material powder.

[0031] Test example The new material powder prepared in Examples 1-3 and Comparative Examples 1-6 is used for the preparation of 5G optical communication ceramic ferrules. The specific preparation method is as follows: the new material powder is mixed with acrylic resin, stearic acid, and microcrystalline wax in a mass ratio of 85:10:2:3, and then placed in a mixer at a temperature of 170°C for 100 minutes, and then granulated into injection molding particles with a diameter of 2mm and a length of 2mm, and then placed in a ceramic injection molding machine, and injected into the ferrule mold at a speed of 100mm / s at a temperature of 170°C and a pressure of 50MPa to obtain an SC ferrule blank, and finally degreased at 500°C for 5h, and sintered at 1300°C for 15h to obtain a 5G optical communication ceramic ferrule. Then the density, hardness, mechanical properties, anti-aging properties, etc. of the obtained ceramic ferrule are tested, and the results are shown in Table 1. Among them, the density is tested by the drainage method; the mechanical properties are tested by a universal tensile testing machine; the hardness is measured by a Mohs hardness tester; the anti-aging performance test is to immerse the ceramic ferrule in an acidic solution with a pH of 2 for 4 hours and then sinter it at 1350℃ to measure its density change rate; the concentricity pass rate is the percentage of ceramic ferrules with a concentricity of less than 2μm and no cracks in 1000 ceramic ferrule samples; the optical fiber loss is tested in accordance with the ISO / IEC 11801-2 standard to test the insertion loss and return loss, and 100 ceramic ferrule samples are tested separately and the average value is taken.

[0032] Table 1 Performance results

[0033] It can be seen from the results in Table 1 that the new material obtained by the formula of the present invention has excellent comprehensive performance. When used for 5G optical communication ceramic ferrules, it has good density and precision, high bending strength, and excellent anti-aging and optical fiber loss performance. The new material has a wide source of raw materials and low cost, and can be used as a new ceramic ferrule material.

[0034] In Comparative Example 1, commercially available mullite is used. Due to its unstable source and large particle size, its density is poor, thus affecting the subsequent overall performance; in Comparative Example 2, only potassium feldspar is used. Due to the excessive potassium feldspar, it is easy to undergo crystal phase transformation at high temperature with potassium, sodium and alkali metals, and the expansion coefficient increases, which affects the stability of acid and alkali resistant substances and dimensions of the ceramic ferrule under high temperature environment, directly affecting the overall performance of the ceramic ferrule; in Comparative Example 3, only barium feldspar is used. Although the overall performance of the obtained ceramic ferrule is relatively excellent, a higher temperature is required during the processing process, and the energy consumption is greatly increased. In addition, it does not have potassium feldspar to optimize the internal structure of the ferrule, and its optical fiber loss is relatively large. In Comparative Example 4, although the overall performance is better without adding cooked talc powder, its concentricity qualified rate is greatly reduced, and the precision is relatively poor; in Comparative Example 5, the overall performance of the ceramic ferrule obtained without adding zirconium oxide is reduced, indicating that adding a small amount of zirconium oxide can play a phase-enhancing role; in Comparative Example 6, the ceramic ferrule prepared with zirconium oxide as the main raw material has higher density and strength, but its anti-aging performance is poor, which not only affects the service life, but also has high cost.

[0035] In summary, the present invention uses homemade nano-grade mullite as the main component, and adds an appropriate amount of barium feldspar and potassium feldspar composite powder, a small amount of talc or dolomite and zirconium oxide. The obtained new material is used to make 5G optical communication ceramic ferrules with good density and high precision. It also has anti-aging properties and low optical fiber loss properties, longer service life and low cost. It has certain advantages over the existing zirconia ferrules and can be used as a new generation of ideal materials for 5G optical communication ceramic ferrules.

[0036] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new material for 5G optical communication ceramic ferrule, characterized in that: The novel material comprises the following raw material components by weight: Mullite powder 70-90 parts; 10-20 parts of feldspar powder; 0.5-5 parts of cooked talc or dolomite powder; 1-5 parts of zirconium oxide powder; The mullite powder is prepared from aluminum oxide and silicon oxide, and has a particle size of less than 100 nm.

2. According to claim 1, a new material for 5G optical communication ceramic ferrule is characterized in that: The preparation method of the mullite powder is as follows: alumina and silicon oxide are mixed, a small amount of water is added, and the mixture is ground for 40-50 minutes; after pressing and forming, the mixture is put into a sintering furnace, the temperature is raised to 1200-1400° C., pre-sintered for 20-30 minutes, and then the temperature is raised to 1600-1700° C., sintered for 30-50 minutes, and after cooling, the mixture is crushed, ground, and sieved to obtain the mullite powder.

3. According to claim 1, a new material for 5G optical communication ceramic ferrule is characterized in that: The molar ratio of aluminum oxide to silicon oxide is 2-3:1-2.

4. According to claim 1, a new material for 5G optical communication ceramic ferrule is characterized in that: The feldspar powder is a mixture of barium feldspar and potassium feldspar in a mass ratio of 3-5:

1.

5. The novel material for 5G optical communication ceramic ferrule according to claim 4, characterized in that: The preparation method of the barium feldspar is as follows: aluminum oxide, silicon oxide and barium carbonate are uniformly mixed, a small amount of water is added and ground for 40-50 minutes, the mixture is pressed into cubes, stacked and placed in a sintering furnace, the temperature is raised to 950-1050° C. for primary sintering for 60-80 minutes, the temperature is then raised to 1180-1220° C. for secondary sintering for 30-50 minutes, and the mixture is crushed, ground and sieved after cooling to obtain barium feldspar powder.

6. The novel material for 5G optical communication ceramic ferrule according to claim 5, characterized in that: The molar ratio of aluminum oxide, silicon oxide and barium carbonate is 1:2:1-1.

2.

7. The novel material for 5G optical communication ceramic ferrule according to claim 5, characterized in that: The zirconium oxide is tetragonal zirconium oxide.

8. A method for preparing a new material for a 5G optical communication ceramic ferrule according to any one of claims 1 to 7, characterized in that: The preparation method comprises the following steps: weighing mullite powder, feldspar powder, talc or dolomite powder, and zirconium oxide powder according to a ratio and adding them into a grinder, then adding water 0.5-1.2 times the volume of the powder, and grinding at 500-800 rpm until the powder D 50 After the particle size is in the range of 0.2-0.3 μm, the new material powder is obtained after spray drying.

9. An application of the new material for 5G optical communication ceramic ferrule as claimed in any one of claims 1 to 7, characterized in that: Used to prepare 5G optical communication ceramic ferrules, the specific method is: put the new material powder, polymer thermoplastic resin, dispersant, and lubricant into a mixer at a temperature of 150-180°C and mix for 90-120 minutes, then granulate into injection molding particles with a diameter of 2mm and a length of 2mm, and then put them into a ceramic injection molding machine, and inject them into the ferrule mold at a temperature of 150-180°C and a pressure of 50MPa at a speed of 80-100mm / s to obtain the ferrule blank, and finally degrease at 400-550°C for 3-5h, and sinter at 1250-1350°C for 10-15h to obtain the 5G optical communication ceramic ferrule.

10. The use according to claim 9, characterized in that: The mass ratio of the new material powder to the polymer thermoplastic resin, the dispersant and the lubricant is 80-90:6-15:2-3:2-4; the polymer thermoplastic resin is acrylic resin; the lubricant is microcrystalline wax; and the dispersant is stearic acid or oleic acid.

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