Polycarboxylic acid type ceramic dispersant as well as preparation method and application thereof

The technology of a ceramic dispersant and polycarboxylic acid is applied in the field of polycarboxylic acid type ceramic dispersant and its preparation, which can solve the problem of high industrial production cost, achieve mild reaction conditions, simple synthesis process, increased hydration ability and thermal stability sexual effect

Active Publication Date: 2015-04-01
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high cost of industrial production, polycarbox

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Weigh 20g of acrylic acid, 20g of 3-(2-methacryloyloxyethyldimethylamino)propanesulfonate, and add them into a three-necked flask; weigh 11.12g of sodium hydroxide, dissolve in 30.00 In g water, sodium hydroxide aqueous solution is obtained; Take sodium hypophosphite 4g, be dissolved in 10.00g water, obtain sodium hypophosphite aqueous solution; The above-mentioned aqueous sodium hydroxide solution and sodium hypophosphite aqueous solution are added in the above-mentioned three-necked flask simultaneously, The mixed solution I is obtained, the pH value of the mixed solution I is 7, the mixed solution I is stirred and heated to 90°C.

[0037] (2) Dissolve 0.16 g of ammonium persulfate into 16.00 g of water, and add the ammonium persulfate aqueous solution dropwise to the mixed solution I to initiate a reaction, and react at 90° C. for 6 hours to obtain the mixed solution II.

[0038] (3) Add 4.00 g of 10 wt % sodium hypophosphite aqueous solution into the mixed liqui...

Embodiment 2

[0042](1) Weigh 20g of acrylic acid, 2.5g of 3-(2-methacryloyloxyethyldimethylamino)propanesulfonate, and add them into a three-necked flask; weigh 11.12g of sodium hydroxide, and dissolve them in 20.00g of water to obtain an aqueous solution of sodium hydroxide; weigh 1.12g of sodium hypophosphite and dissolve it in 10.00g of water to obtain an aqueous solution of sodium hypophosphite; add the aqueous solution of sodium hydroxide and aqueous solution of sodium hypophosphite to the three-necked flask at the same time , to obtain the mixed solution I, the pH value of the mixed solution I is 8, stir and heat the mixed solution I to 60°C.

[0043] (2) Dissolve 0.90 g of ammonium persulfate in 30 g of water, and add the ammonium persulfate aqueous solution dropwise to the mixed solution I to initiate a reaction, react at 60° C. for 2 hours, and obtain the mixed solution II.

[0044] (3) Add 11.2g of 10wt% sodium hypophosphite aqueous solution into the mixed liquid II, and cool to ...

Embodiment 3

[0048] (1) Weigh 20g of acrylic acid, 10g of 3-(2-methacryloyloxyethyldimethylamino)propanesulfonate, and add them into a three-necked flask; weigh 11.12g of sodium hydroxide, dissolve in 20.00 g of water to obtain an aqueous solution of sodium hydroxide; weigh 1.8 g of sodium hypophosphite and dissolve it in 15.00 g of water to obtain an aqueous solution of sodium hypophosphite; add the above aqueous solution of sodium hydroxide and aqueous solution of sodium hypophosphite to the three-necked flask , to obtain the mixed solution I, the pH value of the mixed solution I is 8, stir and heat the mixed solution I to 80°C.

[0049] (2) Dissolve 0.60 g of ammonium persulfate into 30.00 g of water, and add the ammonium persulfate aqueous solution dropwise to the mixed solution I to initiate a reaction, react at 80° C. for 4 hours, and obtain the mixed solution II.

[0050] (3) Add 14g of 10wt% sodium hypophosphite aqueous solution into the mixed liquid II, and cool to room temperatur...

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Abstract

The invention belongs to the technical field of preparation of ceramic dispersants, and discloses a polycarboxylic acid type ceramic dispersant as well as a preparation method and application thereof. The preparation method comprises the steps of mixing 3-dimethyl(methacryloyloxyethyl) ammonium propane sulfonate, acrylic acid, a neutralizing agent and a chain transfer agent by agitating; heating to reach a temperature of 60 to 90 DEG C to obtain a mixed solution I; dropwise adding an initiator solution into the mixed solution I; heating to obtain a mixed solution II; adding a chain terminator into the mixed solution II; stopping heating; cooling by agitating until reaching room temperature so as to obtain the polycarboxylic acid type ceramic dispersant. The polycarboxylic acid type ceramic dispersant has an obvious reinforcement effect for ceramic biscuits; with the adoption of the polycarboxylic acid type ceramic dispersant, the application of a reinforcing agent can be decreased; quaternary ammonium cations are introduced to a main chain of polycarboxylic acid, so that the hydration capacity and heat stability of the polycarboxylic acid type dispersant can be improved; the preparation method has the advantages that the reaction is carried out under mild conditions, the synthesis process is simple, and the industrial production is easily carried out.

Description

technical field [0001] The invention belongs to the technical field of preparation of ceramic dispersants, and in particular relates to a polycarboxylic acid type ceramic dispersant and its preparation method and application. Background technique [0002] Ceramic dispersant is a kind of ceramic additive, also known as diluent or decoagulant. Its main function is to increase the zeta potential of the system so as to improve the fluidity of the slurry, so that it can maintain proper fluidity when the moisture content is reduced. Fluidity and appropriate viscosity; at the same time, the water content of the green body is reduced, the energy consumption of ceramic drying and sintering is reduced, and the production cost is reduced. Therefore, the use of excellent ceramic dispersants can promote the development of ceramic production in the direction of high efficiency, high quality and low energy consumption. [0003] According to the composition of ceramic dispersants, ceramic ...

Claims

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Application Information

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IPC IPC(8): C08F220/38C08F220/06C08F2/38C04B35/634
Inventor 王斌谢义鹏黄月文方天勇梁彩珍
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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