Polycarboxylic acid type high efficiency ceramic water reducing agent, preparation method and application thereof

The technology of a ceramic water reducer and polycarboxylic acid is applied in the field of polycarboxylic acid type high-efficiency ceramic water reducer and its preparation, which can solve the problem of high water content and achieve the effects of good fluidity, high reinforcement and good fluidity

Inactive Publication Date: 2014-04-30
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

The invention overcomes the problem of high water content in the ceramic slurry and achieves the purpose of energy saving, emission reduction and consumption reduction in the ceramic industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Weigh 28.82g of acrylic acid and 38.40g of isopentenol polyoxyethylene ether, and add them into a three-necked flask; weigh 16.00g of sodium hydroxide, dissolve it in 60.00g of water under stirring, and obtain an aqueous solution of sodium hydroxide; weigh Dissolve 2.77g of sodium hypophosphite in 20.00g of water to obtain an aqueous solution of sodium hypophosphite; add the above-mentioned aqueous solution of sodium hydroxide and aqueous solution of sodium hypophosphite to the above-mentioned three-necked flask at the same time to obtain the mixed solution I, and the pH of the mixed solution I The value is 7, stir and heat the mixture I to 80°C.

[0042] (2) Dissolve 0.3196g of ammonium persulfate into 12.00g of water, and add the ammonium persulfate aqueous solution dropwise to the mixed solution I to initiate the reaction, and react at 80°C for 2.5 hours to obtain the mixed solution II.

[0043] (3) Add 14.00g of 10wt% sodium hypophosphite aqueous solution into t...

Embodiment 2

[0048] (1) Weigh 28.82g of acrylic acid and 38.40g of allyl alcohol polyoxyethylene ether into a three-necked flask; weigh 16.00g of sodium hydroxide and dissolve it in 60.00g of water under stirring to obtain an aqueous solution of sodium hydroxide; Dissolve 2.77g of sodium phosphite in 20.00g of water to obtain an aqueous solution of sodium hypophosphite; add the above-mentioned aqueous solution of sodium hydroxide and aqueous solution of sodium hypophosphite to the above-mentioned three-necked flask at the same time to obtain the mixed solution I, and the pH value of the mixed solution I to 7, stir and heat the mixture I to 80°C.

[0049] (2) Dissolve 0.3196g of ammonium persulfate into 12.00g of water, and add the ammonium persulfate aqueous solution dropwise to the mixed solution I to initiate the reaction, and react at 80°C for 2.5 hours to obtain the mixed solution II.

[0050] (3) Add 14.00g of 10wt% sodium hypophosphite aqueous solution into the mixed solution II, sto...

Embodiment 3

[0055] (1) Weigh 28.82g of acrylic acid, 32.00g of isopentenol polyoxyethylene ether, and add them into a three-necked flask; weigh 16.00g of sodium hydroxide, dissolve it in 50.00g of water under stirring, and obtain an aqueous sodium hydroxide solution; weigh Dissolve 2.75 g of sodium hypophosphite in 20.00 g of water to obtain an aqueous solution of sodium hypophosphite; add the above-mentioned aqueous solution of sodium hydroxide and aqueous solution of sodium hypophosphite to the above-mentioned three-necked flask at the same time to obtain a mixed solution I, and the pH of the mixed solution I The value is 7, stir and heat the mixture I to 80°C.

[0056] (2) Dissolve 0.3176g of ammonium persulfate into 12.00g of water, and add the aqueous solution of ammonium persulfate into the mixed solution I by dropwise addition to initiate the reaction, and react at 80°C for 3 hours to obtain the mixed solution II.

[0057] (3) Add 13.50g of 10wt% sodium hypophosphite aqueous soluti...

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PUM

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Abstract

The invention discloses a polycarboxylic acid type high efficiency ceramic water reducing agent, a preparation method and application thereof. The preparation method provided by the invention comprises the steps of: mixing a macromonomer, acrylic acid, a neutralizing agent and a chain transfer agent under stirring, conducting heating to 70-110DEG C to obtain a mixed solution I; adding an initiator solution dropwise into the mixed solution I, and performing heating to obtain a mixed solution II; adding a chain terminator into the mixed solution II, stopping heating, and performing cooling to room temperature under stirring, thus obtaining the polycarboxylic acid type high efficiency ceramic water reducing agent. Compared with inorganic salt ceramic water reducing agent and other polycarboxylic acid water reducing agents, under the circumstance of the same adding amount and other conditions, the ceramic water reducing agent provided by the invention has better ceramic slurry fluidity. The water reducing agent has certain grinding aid effect on ceramic soil materials, and has an obvious reinforcing effect on ceramic biscuits. Adding of the water reducing agent can reduce the use of a grinding aid and a reinforcing agent use. The method provided by the invention has the advantages of easily available synthetic raw materials, mild reaction conditions, simple synthetic process, and easy industrial production.

Description

technical field [0001] The invention belongs to the technical field of preparation of ceramic water reducers, and in particular relates to a polycarboxylic acid type high-efficiency ceramic water reducer and its preparation method and application. Background technique [0002] Ceramic superplasticizer is a kind of ceramic additive widely used at present. The role of ceramic water reducing agent is to improve the fluidity of ceramic slurry and glaze, so that slurry and glaze can achieve higher dispersion effect and required fluidity under the condition of low water content; at the same time, it can also reduce The drying and sintering time of ceramic slurry and glaze layer is reduced, and the production cost is reduced. Therefore, the use of excellent ceramic water reducer can promote the development of ceramic production in the direction of high efficiency, high quality and low energy consumption. [0003] At present, the water reducers commonly used in ceramic production ...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F220/06C08F2/38C08F2/42C04B33/13
Inventor 王斌谢义鹏刘化珍严杰李雅杰
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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