Method for preparing ceramic body

A technology for ceramic blanks and ceramic slurry, which is applied in the field of preparing ceramic blanks by in-situ solidification of self-gelling reaction, can solve the problem of increasing investment and production costs in waste water and waste gas treatment, irritating skin and mucous membranes, and relatively expensive organic raw materials. Expensive and other issues, to achieve a wide range of industrial application prospects, streamlined raw materials, smooth surface without peeling effect

Active Publication Date: 2013-06-05
PINGXIANG SHUNPENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The amount of organic matter is large, and the organic matter content in the waste liquid produced is relatively high, such as the curing agent polyethyleneimine or dipropylene triamine, which is highly toxic, irritating to the skin and mucous membrane, and harmful to the health of the operator unfavorable;
[0004] 2. The organic raw materials of the gel system are relatively expensive, and the high production cost is ...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Preparation of intact alumina ceramics with a solid content of 50Vol%

[0026] The alumina ceramic powder used is provided by Sumitomo Ceramics Co., Ltd., Japan, with an average particle size of about 0.48 μm.

[0027] Add 0.40g of butene-based polymer to 40g of deionized water, mix with a planetary ball mill for 5min, then add 160g of alumina ceramic powder, continue ball milling for 30min, after mixing evenly, inject the obtained ceramic slurry into a plastic mold, It can be self-gel-cured under low temperature or heated to 30-40°C. After curing for 2-5 hours, demould, air-dried naturally or placed in an oven at 60-120°C for 12-24 hours, and a smooth and clean alumina can be obtained. Ceramic bodies.

[0028] The obtained ceramic green body was debonded at 700°C to remove the organic matter in the green body, and then calcined at 1500°C for 3 hours to obtain a perfect and clean ceramic sample with a size of 10cm*10cm*5cm.

[0029] After testing, the densi...

Embodiment 2

[0030] Example 2: Forming of complex-shaped alumina ceramic body

[0031] Add 0.65g of butene-based polymer to 40g of deionized water, mix with a planetary ball mill for 5min, add 120g of alumina ceramic powder, continue ball milling for 30min, after mixing evenly, inject the obtained ceramic slurry into a rubber mold, It can be self-gel-cured at low temperature or heated to 30-40°C. After curing for 2-5 hours, it will be demoulded, and then it will be air-dried or placed in an oven at 60-120°C for 12-24 hours to obtain a complex shape with a smooth surface. Alumina ceramic body.

Embodiment 3

[0032] Embodiment 3: Forming of zirconia ceramic green body

[0033] Add 0.20g of a butene-based polymer to 20g of deionized water, mix with a planetary ball mill for 5 minutes, add 80g of zirconia ceramic powder, and continue ball milling for 30 minutes. After mixing evenly, inject the obtained ceramic slurry into a metal mold, Under the environment or heated to 30-40°C for self-gel curing, demould after curing for 2-5 hours, air-dry naturally or place in an oven at 60-120°C for 12-24 hours to obtain zirconia ceramics with smooth surface body.

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Abstract

The invention discloses a method for preparing a ceramic body. The method comprises the following steps: water is used as a solvent, and water-soluble polybutadiene vinyl polymer is added to the solvent to prepare ceramic slurry; the prepared ceramic slurry is injected into a forming mold, and self-gel in-situ solidification is conducted at the temperature of 15 DEG C-40 DEG C in the air; and demolding and drying are conducted after sufficient solidification. Due to the fact that the self-gel in-situ solidification is carried out on the water-soluble polybutadiene vinyl polymer which has the functions of a dispersing agent and a gel reagent at the same time, and is low in toxicity, low in cost and easy to obtain to prepare the ceramic body, preparation cost is greatly reduced and pollution is reduced. Moreover, the method is simple in preparation technology, free of oxygen inhibition, capable of being operated in the air and free of harsh operating conditions and equipment requirements. Besides, the prepared ceramic body is high in intensity, good in toughness, bright and clean in surface, free of exfoliation and suitable for preparation of various oxide ceramics, oxide ceramics, composite ceramics and ceramics with complex shapes, and thus the method for preparing the ceramic body has industrial application prospects.

Description

technical field [0001] The invention relates to a method for colloidal molding of a ceramic body, in particular to a method for preparing a ceramic body by using a butene polymer as a dispersant and a gelling agent and solidifying in situ through a self-gel reaction . Background technique [0002] In the early 1990s, the Oak Ridge National Laboratory of the United States developed a gel injection molding process, which used the three-dimensional network structure formed by the polymerization of organic monomers to form a green body with a certain strength from the ceramic slurry. However, there is a problem of oxygen inhibition in this gel system, and a complete body cannot be prepared. In order to solve the problem of oxygen inhibition, E.Adolfson (J.Am.Cera.Soc., 2006, 89 [6] 1897-1902), add dispersant in zirconia slurry, and adopt Agarose as gel reagent, need It is inconvenient to configure the slurry under the environment of 60-65°C, and the solid content is only 35vol...

Claims

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Application Information

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IPC IPC(8): C04B35/622C04B35/634
Inventor 杨燕岛井骏藏周国红王士维
Owner PINGXIANG SHUNPENG NEW MATERIALS
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