Anti-static ceramic suction nozzle and preparation method thereof

Abstract

The invention discloses an anti-static ceramic suction nozzle and a preparation method thereof, and relates to the technical field of ceramics, the anti-static ceramic suction nozzle comprises the following raw materials by weight: 80-90 parts of zirconia powder, 0.5-3 parts of a stabilizer and 10-30 parts of coated conductive fiber; the preparation method of the coated conductive fiber comprises the following steps: dispersing carbon fiber in water to obtain a suspension, dissolving SnCl4. 5H2O in hydrochloric acid, adding SbCl3 to form a mixed solution, dropwise adding the mixed solution and a sodium hydroxide solution into the suspension, controlling the pH value of the suspension to be 1.5-3, stirring, aging, carrying out suction filtration, washing, drying, and carrying out heat treatment to obtain the coated conductive fiber. According to the anti-static ceramic suction nozzle, by adding and coating the conductive fibers, the conductive fibers do not deform under the action of high temperature, a complete network structure is formed on the ceramic surface, the conductive fibers can communicate with one another, and the anti-static performance of the ceramic suction nozzle is greatly improved. In addition, by adopting the carbon fibers, on one hand, the conductivity can be improved, and on the other hand, the mechanical performance of the ceramic suction nozzle can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramics, and particularly relates to an anti-static ceramic nozzle and a preparation method thereof. Background Art

[0002] A ceramic nozzle is a tool made of ceramic material. It sucks air through a sealed tube pump to suck an object, thereby achieving a handling effect. For example, during high-speed chip placement, when the nozzle sucks and places electronic components, static electricity is easily generated during the contact between the nozzle end face and the electronic components. To reduce the breakdown damage of static electricity to electronic components, an anti-static ceramic nozzle is extremely important. Summary of the Invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and provide an anti-static ceramic nozzle and a preparation method thereof.

[0004] The technical solution of the present invention is as follows:

[0005] An anti-static ceramic nozzle, comprising raw materials in the following weight parts:

[0006] 80 - 90 parts of zirconia powder, 0.5 - 3 parts of stabilizer, and 10 - 30 parts of coated conductive fiber;

[0007] The preparation method of the coated conductive fiber is as follows:

[0008] Disperse carbon fiber in water to obtain a suspension. Separately, dissolve SnCl4·5H2O in hydrochloric acid, and simultaneously add SbCl3 to form a mixed solution with a molar ratio of Sn 4+ and Sb 3+ of 1:0.03 - 0.05. Then, drop the mixed solution and sodium hydroxide solution into the suspension, while controlling the pH of the suspension to be 1.5 - 3, stir, age, filter, wash, dry, and then perform heat treatment to obtain it.

[0009] As a preferred embodiment of the present invention, the temperature of the heat treatment is 500 - 1300 °C, and the heat preservation time is 20 - 40 min.

[0010] As a preferred embodiment of the present invention, the aspect ratio of the carbon fiber is 2 - 15:1.

[0011] As a preferred embodiment of the present invention, the radial particle size of the carbon fiber is 1 - 5 μm.

[0012] As a preferred embodiment of the present invention, the volume mass ratio of the mixed solution to the carbon fiber is 1:3 - 5.

[0013] As a preferred embodiment of the present invention, the stabilizer is a mixture of yttrium oxide and zinc oxide with a mass ratio of 1:1 - 3.

[0014] The present invention also discloses a preparation method of an anti-static ceramic nozzle, comprising the following steps:

[0015] S1: Mix zirconia and coated conductive fibers to obtain a mixed material;

[0016] S2: Add a binder to the mixed material, granulate, and injection mold to obtain a green body;

[0017] S3: Perform degreasing treatment on the green body;

[0018] S4: Perform high-temperature sintering.

[0019] As a preferred solution of the present invention, the binder comprises paraffin, polyethylene, ethylene-vinyl acetate, and stearic acid in a mass ratio of 1:0.4 - 0.7:0.1 - 0.2:0.1 - 0.3.

[0020] As a preferred solution of the present invention, the degreasing treatment is sequentially performed at 100 - 200°C, 300 - 400°C, and 400 - 600°C for 3 - 5 hours respectively.

[0021] As a preferred solution of the present invention, the high-temperature sintering is specifically as follows: sequentially from low to high are 400 - 600°C, 800 - 1000°C, 1100 - 1300°C, and 1400 - 1500°C, and each temperature is maintained for 2 - 8 hours. Then it is naturally cooled to below 100°C, taken out, and the anti-static ceramic nozzle is obtained.

[0022] The beneficial effects of the present invention are:

[0023] By adding coated conductive fibers, the present invention can prevent the conductive fibers from deforming under high-temperature action, form a complete network structure on the ceramic surface, and enable the conductive fibers to communicate with each other, greatly improving the anti-static performance of the ceramic nozzle. In addition, the present invention uses carbon fibers, which can, on the one hand, improve the conductive performance and have an anti-static effect, and on the other hand, can also improve the mechanical performance of the ceramic nozzle. Moreover, the addition of the stabilizer can mutually inhibit grain growth, achieve a microcrystalline effect, and improve the wear resistance. Specific Embodiments

[0024] The embodiments of the present invention are described in detail below. The following described embodiments are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention. For those not specified in the embodiments regarding specific technologies or conditions, they shall be carried out according to the technologies or conditions described in the literature in this field or according to the product specifications. For reagents or instruments not specified by the manufacturer, they are all conventional products that can be obtained through commercial purchase.

[0025] Example 1

[0026] An anti-static ceramic nozzle, comprising raw materials in the following parts by weight:

[0027] 85 parts of zirconia powder, 0.5 part of stabilizer, and 10 parts of coated conductive fibers;

[0028] The preparation method of the coated conductive fibers is as follows:

[0029] Disperse carbon fibers in water to obtain a suspension. Separately, dissolve SnCl4·5H2O in hydrochloric acid to prepare a solution with a concentration of 0.6 mol / L, and at the same time add SbCl3 to form a mixed solution of Sn 4+ and Sb 3+ with a molar ratio of 1:0.03. Then, drop the mixed solution and sodium hydroxide solution into the suspension, while controlling the pH of the suspension to be 2, stir, age, filter, wash, dry, and then place it at 800 °C for heat treatment, keep warm for 30 min, and obtain the product.

[0030] The aspect ratio of the carbon fibers is 8:1.

[0031] The radial particle size of the carbon fibers is 3 μm.

[0032] The volume-mass ratio of the mixed solution to the carbon fibers is 1:5.

[0033] The stabilizer is a mixture of yttrium oxide and zinc oxide with a mass ratio of 1:2.

[0034] A preparation method of an anti-static ceramic nozzle, comprising the following steps:

[0035] S1: Mix zirconia and coated conductive fibers to obtain a mixed material;

[0036] S2: Add a binder to the mixed material, granulate, and injection mold to obtain a green body; the binder comprises paraffin, polyethylene, ethylene-vinyl acetate, and stearic acid with a mass ratio of 1:0.5:0.1:0.3.

[0037] S3: Perform degreasing treatment on the green body; the degreasing treatment is carried out at 150 °C, 350 °C, and 550 °C for 3 h in sequence.

[0038] S4: High-temperature sintering; specifically: from low to high, they are 500 °C, 900 °C, 1200 °C, and 1450 °C in sequence, and keep warm for 5 h at each temperature. Then, naturally cool to below 100 °C, take out, and obtain the anti-static ceramic nozzle.

[0039] Example 2

[0040] An anti-static ceramic nozzle, comprising raw materials in the following parts by weight:

[0041] 90 parts of zirconia powder, 0.7 part of stabilizer, and 15 parts of coated conductive fibers;

[0042] The preparation method of the coated conductive fiber is as follows:

[0043] Disperse carbon fiber in water to obtain a suspension. Dissolve SnCl4·5H2O in hydrochloric acid to prepare a solution with a concentration of 0.6 mol / L, and simultaneously add SbCl3 to form a 4+ mixture of Sn 3+ and Sb with a molar ratio of 1:0.03. Then, drop the mixture and sodium hydroxide solution into the suspension, while controlling the pH of the suspension to be 2. Stir, age, filter, wash, dry, and then heat-treat at 900 °C for 30 min to obtain.

[0044] The aspect ratio of the carbon fiber is 9:1.

[0045] The radial particle size of the carbon fiber is 4 μm.

[0046] The volume-mass ratio of the mixture to the carbon fiber is 1:5.

[0047] The stabilizer is a mixture of yttrium oxide and zinc oxide with a mass ratio of 1:2.

[0048] A preparation method of an anti-static ceramic nozzle includes the following steps:

[0049] S1: Mix zirconia and the coated conductive fiber to obtain a mixture;

[0050] S2: Add a binder to the mixture, granulate, and injection mold to obtain a green body; the binder includes paraffin, polyethylene, ethylene-vinyl acetate, and stearic acid with a mass ratio of 1:0.6:0.2:0.3.

[0051] S3: Perform a debinding treatment on the green body; the debinding treatment is carried out at 150 °C, 350 °C, and 550 °C for 4 h in sequence.

[0052] S4: High-temperature sintering; specifically: from low to high are 550 °C, 900 °C, 1250 °C, and 1500 °C in sequence, and each temperature lasts for 6 h. Then, naturally cool to below 100 °C, take out, and obtain the anti-static ceramic nozzle.

[0053] Example 3

[0054] An anti-static ceramic nozzle includes the following raw materials in parts by weight:

[0055] 90 parts of zirconia powder, 3 parts of stabilizer, and 20 parts of coated conductive fiber;

[0056] The preparation method of the coated conductive fiber is as follows:

[0057] Disperse carbon fiber in water to obtain a suspension. Separately, dissolve SnCl4·5H2O in hydrochloric acid to prepare a solution with a concentration of 0.6 mol / L, and simultaneously add SbCl3 to form a mixture of Sn 4+ and Sb 3+ with a molar ratio of 1:0.03. Then, drop the mixture and sodium hydroxide solution into the suspension, while controlling the pH of the suspension to be 2, stir, age, filter, wash, dry, and then place it at 1000 °C for heat treatment, keep the temperature for 30 min, and obtain the product.

[0058] The aspect ratio of the carbon fiber is 8:1.

[0059] The radial particle size of the carbon fiber is 5 μm.

[0060] The volume-mass ratio of the mixture to the carbon fiber is 1:4.

[0061] The stabilizer is a mixture of yttrium oxide and zinc oxide with a mass ratio of 1:3.

[0062] A preparation method of an anti-static ceramic nozzle includes the following steps:

[0063] S1: Mix zirconia and coated conductive fibers to obtain a mixture;

[0064] S2: Add a binder to the mixture, granulate, and injection mold to obtain a green body; the binder includes paraffin, polyethylene, ethylene-vinyl acetate, and stearic acid with a mass ratio of 1:0.7:0.2:0.3.

[0065] S3: Perform degreasing treatment on the green body; the degreasing treatment is carried out at 200 °C, 400 °C, and 600 °C for 3 h in sequence.

[0066] S4: High-temperature sintering; specifically: from low to high, they are 600 °C, 1000 °C, 1300 °C, and 1500 °C in sequence, and keep the temperature for 6 h at each temperature. Then, naturally cool to below 100 °C, take out, and obtain the anti-static ceramic nozzle.

[0067] Example 4

[0068] An anti-static ceramic nozzle includes the following raw materials in parts by weight:

[0069] 90 parts of zirconia powder, 0.7 part of stabilizer, and 20 parts of coated conductive fibers;

[0070] The preparation method of the coated conductive fiber is as follows:

[0071] Disperse carbon fiber in water to obtain a suspension. Separately, dissolve SnCl4·5H2O in hydrochloric acid to prepare a solution with a concentration of 0.6 mol / L, and simultaneously add SbCl3 to form a mixture of Sn4+ and Sb 3+ A mixed solution with a molar ratio of 1:0.03, and then the mixed solution and sodium hydroxide solution are dropped into the suspension, while controlling the pH of the suspension to be 2, stirring, aging, suction filtration, washing, drying, and then heat-treating at 900 °C for 30 min to obtain it.

[0072] The aspect ratio of the carbon fiber is 12:1.

[0073] The radial particle size of the carbon fiber is 4 μm.

[0074] The volume-mass ratio of the mixed solution to the carbon fiber is 1:5.

[0075] The stabilizer is a mixture of yttrium oxide and zinc oxide with a mass ratio of 1:3.

[0076] A preparation method of an anti-static ceramic nozzle, comprising the following steps:

[0077] S1: Mix zirconia and coated conductive fibers to obtain a mixed material;

[0078] S2: Add a binder to the mixed material, granulate, and injection mold to obtain a green body; the binder includes paraffin, polyethylene, ethylene-vinyl acetate, and stearic acid with a mass ratio of 1:0.6:0.2:0.3.

[0079] S3: Perform degreasing treatment on the green body; the degreasing treatment is carried out at 150 °C, 350 °C, and 550 °C for 4 h in sequence.

[0080] S4: High-temperature sintering; specifically: from low to high are 550 °C, 900 °C, 1250 °C, and 1500 °C in sequence, and each temperature is maintained for 6 h. Then naturally cool to below 100 °C, take out, and obtain the anti-static ceramic nozzle.

[0081] Example 5

[0082] An anti-static ceramic nozzle, comprising the following raw materials in parts by weight:

[0083] 90 parts of zirconia powder, 0.7 part of stabilizer, and 15 parts of coated conductive fibers;

[0084] The preparation method of the coated conductive fiber is as follows:

[0085] Disperse carbon fiber in water to obtain a suspension, and dissolve SnCl4·5H2O in hydrochloric acid to prepare a solution with a concentration of 0.6 mol / L, and at the same time add SbCl3 to form Sn 4+ and Sb 3+A mixed solution with a molar ratio of 1:0.03 was prepared. Then, the mixed solution and sodium hydroxide solution were dropped into the suspension while controlling the pH of the suspension to be 2. After stirring, aging, suction filtration, washing, and drying, it was heat-treated at 900 °C for 30 minutes to obtain the product.

[0086] The aspect ratio of the carbon fiber is 15:1.

[0087] The radial particle size of the carbon fiber is 5 μm.

[0088] The volume-mass ratio of the mixed solution to the carbon fiber is 1:5.

[0089] The stabilizer is a mixture of yttrium oxide and zinc oxide with a mass ratio of 1:3.

[0090] A method for preparing an anti-static ceramic nozzle includes the following steps:

[0091] S1: Zirconia and coated conductive fibers were mixed to obtain a mixture.

[0092] S2: A binder was added to the mixture, granulated, and injection molded to obtain a green body. The binder includes paraffin, polyethylene, ethylene-vinyl acetate, and stearic acid with a mass ratio of 1:0.6:0.2:0.3.

[0093] S3: The green body was degreased. The degreasing treatment was carried out at 150 °C, 350 °C, and 550 °C for 4 hours in sequence.

[0094] S4: High-temperature sintering was carried out. Specifically, the temperatures were 550 °C, 900 °C, 1250 °C, and 1500 °C in sequence, and each temperature was maintained for 6 hours. Then, it was naturally cooled to below 100 °C and taken out to obtain the anti-static ceramic nozzle.

[0095] Comparative Example 1

[0096] Differing from Example 2, coated conductive carbon fibers were not added.

[0097] Comparative Example 2

[0098] Differing from Example 2, carbon fibers were used instead of coated conductive fibers.

[0099] The above examples and comparative examples were subjected to performance tests, and the test results are as follows:

[0100] Table 1 Performance test results of examples and comparative examples

[0101]

[0102]

[0103] As can be seen from the above table, the performance of the examples is better than that of the comparative examples. The main reasons may be as follows. From the analysis of Comparative Examples 1-3, it can be known that adding coated conductive fibers can prevent the conductive fibers from deforming under high temperature, form a complete network structure on the ceramic surface, and enable the conductive fibers to be interconnected with each other, greatly improving the antistatic performance of the ceramic nozzle. In addition, the carbon fiber used in the present invention can, on the one hand, improve the conductivity and have an antistatic effect, and on the other hand, also improve the mechanical properties of the ceramic nozzle. Moreover, the addition of the stabilizer can mutually inhibit grain growth, achieve the microcrystallization effect, improve its hardness, and thus improve the wear resistance.

[0104] The above-described embodiments only represent the preferred embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, according to the technical solutions and concepts described above, various other corresponding changes and deformations can also be made, and all such changes and deformations should fall within the protection scope of the claims of the present invention.

Claims

1. An anti-static ceramic nozzle, characterized in that, Comprising raw materials in the following parts by weight: 80 - 90 parts of zirconia powder, 0.5 - 3 parts of stabilizer, and 10 - 30 parts of coated conductive fibers; The preparation method of the coated conductive fibers is as follows: Disperse carbon fiber in water to obtain a suspension. Separately, dissolve SnCl4·5H2O in hydrochloric acid and add SbCl3 simultaneously to form a mixed solution with a molar ratio of Sn 4+ and Sb 3+ of 1:0.03 - 0.

05. Then, drop the mixed solution and sodium hydroxide solution into the suspension, while controlling the pH of the suspension to be 1.5 - 3, stir, age, filter by suction, wash, dry, and then perform heat treatment to obtain the product.

2. The anti-static ceramic nozzle according to claim 1, wherein, The temperature of the heat treatment is 500 - 1300 °C, and the heat preservation is 20 - 40 min.

3. The anti-static ceramic nozzle according to claim 1, wherein The aspect ratio of the carbon fiber is 2 - 15:

1.

4. The anti-static ceramic nozzle according to claim 1, characterized in that, The radial particle size of the carbon fiber is 1 - 5 μm.

5. The anti-static ceramic suction nozzle according to claim 1, characterized in that, The volume - mass ratio of the mixed solution to the carbon fiber is 1:3 - 5.

6. The anti-static ceramic nozzle according to claim 1, wherein, The stabilizer is a mixture of yttrium oxide and zinc oxide with a mass ratio of 1:1 - 3.

7. A preparation method of an anti-static ceramic nozzle, characterized in that, Comprising the following steps: S1: Mix zirconia and coated conductive fibers to obtain a mixed material; S2: Add a binder to the mixed material, granulate, and injection - mold to obtain a green body; S3: Perform debinding treatment on the green body; S4: High - temperature sintering.

8. The preparation method of an anti-static ceramic nozzle according to claim 7, characterized in that, The binder comprises paraffin, polyethylene, ethylene - vinyl acetate, and stearic acid with a mass ratio of 1:0.4 - 0.7:0.1 - 0.2:0.1 - 0.

3.

9. The preparation method of an anti-static ceramic nozzle according to claim 7, characterized in that, The debinding treatment is carried out at 100 - 200 °C, 300 - 400 °C, and 400 - 600 °C for 3 - 5 h in sequence.

10. The preparation method of an anti-static ceramic nozzle according to claim 7, characterized in that, The high - temperature sintering is specifically as follows: successively from low to high are 400 - 600 °C, 800 - 1000 °C, 1100 - 1300 °C, 1400 - 1500 °C, and each temperature is maintained for 2 - 8 h. Then naturally cool to below 100 °C, take out, and obtain an anti - static ceramic nozzle.

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