Ceramic slurry high-solid content promoter and preparation method thereof

A technology of ceramic slurry and accelerator, which is applied in the field of ceramics, can solve the problems of insufficient viscosity reduction and dispersion effect of ceramic slurry, increase of green body strength, high preparation cost, etc., achieve excellent viscosity reduction effect, increase solid content, prevent particles The effect of reunion

Active Publication Date: 2013-01-30
深圳华盛聚元新材料科技中心(有限合伙)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods, the process is relatively complicated, and the organic solvent needs to be introduced. After the reaction, it needs to be removed and other processes. The separation is complicated, not environmentally friendly, not marketable enough, and the preparation cost is also high.
[0005] Moreover, the addition of water reducing agent cannot increase the strength of the green body, and the effect of reducing viscosity and dispersing ceramic slurry with ultra-high solid content is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] The preparation method of the accelerator with high solid content in the ceramic slurry of the present invention comprises the following steps: 1) adding water, functional monomers, and the first part of the inorganic chain transfer agent in order to mix, stirring and raising the temperature to 70-80°C to obtain the mixed solution I ; 2) mixing the unsaturated carboxylic acid monomer with the functional monomer and the remaining second part of the inorganic chain transfer agent mixed monomer with water to obtain a mixed monomer, adding water to dissolve the initiator to obtain an initiator solution ; 3) drop the mixed monomer and the initiator solution obtained in step 2) into the mixed solution I obtained in step 1) in parallel, and keep warm for 2-4 hours after the addition to obtain mixed solution II; 4) Cool down the mixed liquid II obtained in step 3) to 40-50°C, add dropwise sodium hydroxide solution with a mass concentration of 30% until the pH value is 6-8, keep ...

example 1

[0028] Example 1: 1) In a 250ml four-neck flask, add 15g of water, 6g of sodium methacrylate, and 1.4g of sodium hypophosphite, start stirring and dissolving and heat up to 70°C to obtain a mixed solution I; 2) Mix 32g of acrylic acid, Mix 5.2g of acrylamide, 1g of sodium hypophosphite and 7g of water to obtain a mixed monomer, dissolve 0.7g of ammonium persulfate in 15g of water to obtain an initiator solution; 3) parallelize the mixed monomer and initiator solution obtained in step 2) Drop into the mixed solution I obtained in step 1), keep warm for 3 hours after 2.5 hours to get the mixed solution II; 4) cool down the mixed solution II to 45°C, and adjust the pH value to 7 with 30% sodium hydroxide solution; Afterwards, keep warm for 0.5h, cool down, filter and discharge to obtain the solid accelerator in the ceramic slurry.

example 2

[0029] Example 2: 1) Add 15g of water, 5.6g of maleic anhydride, and 2.4g of sodium bisulfite to a 250ml four-neck bottle, start stirring and dissolving and heat up to 75°C to obtain a mixed solution I; 2) Mix 32g of acrylic acid, 4.8g Mix 2-acrylamido-2-methylpropenesulfonic acid, 1.6g sodium bisulfite and 7g water to obtain a mixed monomer; dissolve 0.7g ammonium persulfate in 15g water to obtain an initiator solution; 3) combine step 2) The obtained mixed monomer and initiator solution are dropped into the mixed solution I obtained in step 1) in parallel, and after 3 hours of dropping, keep warm for 4 hours to obtain the mixed solution II; 4) Cool the mixed solution II to 40°C, and use 30% sodium hydroxide Adjust the pH value of the solution to 6; after the adjustment, keep warm for 0.5h, cool down, filter and discharge the material to obtain the solid accelerator in the ceramic slurry.

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PUM

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Abstract

The invention relates to a ceramic slurry high-solid content promoter and a preparation method thereof. The preparation method comprises the following steps of 1, orderly adding water, a functional monomer and a part of an inorganic chain transfer agent into a mixer, mixing, and heating to a temperature of 70 to 80 DEG C with stirring to obtain a mixed solution I, 2, mixing an unsaturated carboxylic acid monomer, the functional monomer, the rest of the inorganic chain transfer agent and water into mixed monomers, and dissolving an initiator in water to obtain an initiator solution, 3, dropwisely adding the mixed monomers and the initiator solution into the mixed solution I in parallel, and after dropwise addition, carrying out heat preservation for 2 to 4 hours to obtain a mixed solution II, and 4, cooling the mixed solution II to a temperature of 40 to 50 DEG C, dropwisely adding a sodium hydroxide solution having a mass concentration of 30% into the mixed solution II until a PH value of the mixed solution II is in a range of 6 to 8, after dropwise addition, carrying out heat preservation for 0.5 to 1 hour, cooling, filtering and carrying out emptying to obtain the ceramic slurry high-solid content promoter. In a ceramic preparation technology, through utilization of the ceramic slurry high-solid content promoter obtained by the preparation method, ceramic blank strength and ball milling effects are improved.

Description

technical field [0001] The invention relates to the field of ceramics, in particular to a high-solid accelerator for ceramic slurry and a preparation method thereof. Background technique [0002] With the continuous use of high-quality china clay in the ceramic industry, high-quality clay resources are becoming increasingly scarce. Due to its non-renewability, the ceramic industry has to start using clay with more barren materials to produce various ceramic products. However, due to The congenital insufficiency of the material leads to problems such as insufficient strength of the ceramic body and difficulty in degumming the slurry, resulting in defects such as cracks, broken corners, and missing edges in the produced products. At present, my country's ceramic industry generally uses water-reducing agents to solve this problem. Due to the influence of molecular structure, relative molecular weight and other factors, the effect of ordinary ceramic water-reducing agents is not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F222/02C08F222/06C08F220/56C08F220/58C08F228/02C08F2/38C04B35/634
Inventor 陈永梅
Owner 深圳华盛聚元新材料科技中心(有限合伙)
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