Zirconia ceramic nozzle for color sorter and preparation method of zirconia ceramic nozzle

A technology of zirconia ceramics and a color sorter, which is applied in the field of materials, can solve problems such as thermal shock resistance, weak toughness, poor processing performance, and uneven thickness, so as to enhance mechanical properties, improve hardness and corrosion resistance, and improve The effect of high hardness

Inactive Publication Date: 2019-10-18
ANHUI ZHONGKE OPTIC ELECTRONICS COLOR SORTER MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the commonly used materials were silicon dioxide and pure boron nitride nozzles. Due to their high hardness and poor processing performance, silicon dioxide nozzles are only suitable for the production of narrow strips with small widths.
The nozzle made of pure boron nitride has good processing performance. Although the heat dissipation effect is good (good thermal conductivity), the thermal shock resistance and toughness are weak. After a period of use, nozzle deformation and spraying will soon occur The channel is impacted by the molten liquid into a flow channel, resulting in uneven thickness of the spray body deposited on the substrate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A zirconia ceramic nozzle for a color sorter, which is composed of the following raw materials in parts by weight:

[0023] Sodium carbonate 0.1, zirconia 80, silane coupling agent kh560 20, tetraethyl orthosilicate 100, kaolin 10, diethylenetriamine 3, boron nitride 28, magnesium oxide 3, catalyst 0.1.

[0024] The catalyst is 85% hydrochloric acid.

[0025] A method for preparing a zirconia ceramic nozzle for a color sorter, comprising the following steps:

[0026] (1) Take kaolin, calcined at 700 ° C for 1 hour, cooled to room temperature, ground into fine powder, added to anhydrous methanol 20 times its weight, stirred evenly, added silane coupling agent kh560, and sent to a constant temperature water bath , insulated and stirred at 75°C for 1 hour, discharged and cooled to obtain a silane dispersion;

[0027] (2) Take the catalyst, add it to the above-mentioned silane dispersion, stir evenly, send it into the reaction kettle, heat and stir at 55°C for 13 hours, d...

Embodiment 2

[0037] A zirconia ceramic nozzle for a color sorter, which is composed of the following raw materials in parts by weight:

[0038] Sodium carbonate 0.3, zirconia 100, silane coupling agent kh560 25, tetraethyl orthosilicate 120, kaolin 17, diethylenetriamine 5, boron nitride 35, magnesium oxide 5, catalyst 0.2.

[0039] The catalyst is 90% hydrochloric acid.

[0040] A method for preparing a zirconia ceramic nozzle for a color sorter, comprising the following steps:

[0041] (1) Take kaolin, calcined at 800°C for 2 hours, cooled to room temperature, ground into fine powder, added to anhydrous methanol 30 times its weight, stirred evenly, added silane coupling agent kh560, and sent to a constant temperature water bath , insulated and stirred at 80°C for 2 hours, discharged and cooled to obtain a silane dispersion;

[0042] (2) Take the catalyst, add it to the above-mentioned silane dispersion, stir evenly, send it into the reaction kettle, heat and stir at 60°C for 15 hours, ...

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Abstract

The invention discloses a zirconia ceramic nozzle for a color sorter. The zirconia ceramic nozzle is prepared from the following raw materials in parts by weight: 0.1-0.3 part of sodium carbonate, 80-100 parts of zirconium oxide, 20-25 parts of silane coupling agent kh560, 100-120 parts of tetraethyl orthosilicate, 10-17 parts of kaolin, 3-5 parts of diethylenetriamine, 28-35 parts of boron nitride, 3-5 parts of magnesium oxide and 0.1-0.2 part of catalyst. By using the zirconia ceramic nozzle, the hardness and corrosion resistance of a traditional ceramic nozzle are improved, the defects of high hardness and poor machinability of traditional silicon dioxide are overcome, and a finished product is high in stability and excellent in overall properties.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a zirconia ceramic nozzle for a color sorter and a preparation method thereof. Background technique [0002] At present, nozzles such as ceramic sandblasting nozzles and fuel injection nozzles are mostly made of ceramic materials such as silicon carbide, boron carbide or alumina, and the manufacturing technology adopts hot pressing method or pressureless sintering method. In the past, the commonly used materials were silicon dioxide and pure boron nitride nozzles. Due to their high hardness and poor processing performance, silicon dioxide nozzles are only suitable for the production of narrow strips with small widths. The nozzle made of pure boron nitride has good processing performance. Although the heat dissipation effect is good (good thermal conductivity), the thermal shock resistance and toughness are weak. After a period of use, nozzle deformation and spraying will soon...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B35/64
CPCC04B35/48C04B35/64C04B2235/349C04B2235/386C04B2235/3206C04B2235/3201C04B2235/96C04B2235/6562
Inventor 段启掌蔡丽方彧孙敏王乔
Owner ANHUI ZHONGKE OPTIC ELECTRONICS COLOR SORTER MACHINERY
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