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Method for preparing plastic-based zirconia granulation material applied to injection molding of ceramic products

A technology of injection molding and zirconia, which is applied in the field of zirconia granulation, can solve problems such as air pollution, no fluidity, and inability to inject, and achieve the effects of good fluidity and power saving

Inactive Publication Date: 2017-09-01
JIANGSU MINGBAISHENG REFRACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the zirconia granules used in the injection molding process to manufacture zirconia ceramic products in China are all wax-based zirconia granules, that is, the auxiliary material microcrystalline wax needs to be added to the main raw material zirconia powder. The disadvantages of granulated materials are: 1. There is not enough fluidity, and it is impossible to produce products with a single piece of zirconia ceramic body weighing more than 25 grams by injection molding, or back plates, panels, appearance parts, and curved surface parts with side lengths greater than 250 mm , 3D structural parts, etc.
2. When degreasing the injection molded green body during the production process, because the granulation material contains wax, when degreasing in a degreasing furnace at about 100°C, the wax will be evaporated and emitted, thereby causing environmental pollution to the atmosphere
3. The degreasing process takes up to 24 hours and consumes a lot of power and gas resources
4. It generally takes about 130 hours for the degreased body to be sintered in a high-temperature kiln, which consumes a lot of power and gas resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for preparing plastic-based zirconia pellets applied to injection-molded ceramic products. The specific steps of the preparation method of plastic-based zirconia pellets applied to injection-molded ceramic products are as follows:

[0018] S1: Proportional weighing and proportioning of the main raw materials and auxiliary materials, and the raw materials are placed for later use after weighing and proportioning;

[0019] S2: Add materials to the automatic mixing and granulating machine, add the raw materials weighed and proportioned in S1 to the automatic mixing and granulating machine whose inner cavity has been preheated, and the inner cavity of the automatic mixing and granulating machine is preheated The final temperature is at least 50°C;

[0020] S3: For the first mixing, the internal temperature of the internal mixing and granulating machine is raised to 130°C, and the added raw materials are mixed, and the mixing time is 10 minutes;

[0021] S4: The se...

Embodiment 2

[0027] A method for preparing plastic-based zirconia pellets applied to injection-molded ceramic products. The specific steps of the preparation method of plastic-based zirconia pellets applied to injection-molded ceramic products are as follows:

[0028] S1: Proportional weighing and proportioning of the main raw materials and auxiliary materials, and the raw materials are placed for later use after weighing and proportioning;

[0029] S2: Add materials to the automatic mixing and granulating machine, add the raw materials weighed and proportioned in S1 to the automatic mixing and granulating machine whose inner cavity has been preheated, and the inner cavity of the automatic mixing and granulating machine is preheated The final temperature is at least 50°C;

[0030] S3: For the first mixing, raise the inner cavity temperature of the mixer and granulator to 150°C, and mix the added raw materials for 20 minutes;

[0031] S4: The second mixing, after the first mixing is comple...

Embodiment 3

[0037] A method for preparing plastic-based zirconia pellets applied to injection-molded ceramic products. The specific steps of the preparation method of plastic-based zirconia pellets applied to injection-molded ceramic products are as follows:

[0038] S1: Proportional weighing and proportioning of the main raw materials and auxiliary materials, and the raw materials are placed for later use after weighing and proportioning;

[0039] S2: Add materials to the automatic mixing and granulating machine, add the raw materials weighed and proportioned in S1 to the automatic mixing and granulating machine whose inner cavity has been preheated, and the inner cavity of the automatic mixing and granulating machine is preheated The final temperature is at least 50°C;

[0040] S3: For the first mixing, the internal temperature of the internal mixing and granulating machine is raised to 180°C, and the added raw materials are mixed, and the mixing time is 30 minutes;

[0041] S4: The se...

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Abstract

The invention discloses a method for preparing a plastic-based zirconia granulation material applied to injection molding of ceramic products. The method for preparing the plastic-based zirconia granulation material applied to injection molding of ceramic products comprises the specific steps: S1, weighing and proportioning main ingredients and auxiliary materials of raw materials; S2, loading in an automatic mixing and granulating integrated machine; S3, performing the first mixing; S4, performing the second mixing; S5, performing the third cooled mixing; S6, performing extrusion pelletizing; S7, packaging. The fluidity is high, and when the material is applied to the injection molding of ceramic products, products in which a single zirconia ceramic body has the weight of more than 25g can be completely manufactured, waste gases in evaporative emission for polluting atmosphere do not exist in a debinding furnace at the temperature of about 100 DEG C, the aim of environment friendliness is achieved, the time consumption only needs to be less than 10 hours at the debinding link, and lots of power, gases and other resources are saved. The ceramic body subjected to debinding only needs to be sintered by about 90 hours in a high temperature furnace generally, and lots of the power, gases and other resources are similarly saved.

Description

technical field [0001] The invention relates to the technical field of zirconia granulation, in particular to a method for preparing a plastic-based zirconia granulation material applied to injection molded ceramic products. Background technique [0002] At present, the zirconia granules used in the injection molding process to manufacture zirconia ceramic products in China are all wax-based zirconia granules, that is, the auxiliary material microcrystalline wax needs to be added to the main raw material zirconia powder. The disadvantages of granulated materials are: 1. There is not enough fluidity, and it is impossible to produce products with a single piece of zirconia ceramic body weighing more than 25 grams by injection molding, or back plates, panels, appearance parts, and curved surface parts with side lengths greater than 250 mm , 3D structural parts, etc. 2. When degreasing the injection molded green body during the production process, because the granulation materi...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B35/626C04B35/632C04B35/634
CPCC04B35/48C04B35/62695C04B35/632C04B35/63404C04B35/63472C04B35/63488C04B2235/3225
Inventor 张方和杨俊华张议方
Owner JIANGSU MINGBAISHENG REFRACTORY
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