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N-Methylolacrylamide modified polycarboxylate ceramic water reducer and normal-temperature preparation method and application thereof

A technology of methylol acrylamide and ceramic water reducing agent is applied in the field of N-methylol acrylamide modified polycarboxylate ceramic water reducing agent and its preparation at room temperature, which can solve the problem of high cost and achieve good fluidity. Effect

Active Publication Date: 2016-07-13
深圳市名轩建材科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, it can be seen from the above patents that the current synthesis process of polymer ceramic water reducer requires heating, and the cost is relatively high; in order to reduce the production cost of ceramic slurry and save resources, it has become a difficult task for the ceramic raw material industry

Method used

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  • N-Methylolacrylamide modified polycarboxylate ceramic water reducer and normal-temperature preparation method and application thereof
  • N-Methylolacrylamide modified polycarboxylate ceramic water reducer and normal-temperature preparation method and application thereof
  • N-Methylolacrylamide modified polycarboxylate ceramic water reducer and normal-temperature preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0025] a. Add 100g of N-methylolacrylamide and 100g of water into the reactor at normal temperature and stir and mix to obtain the mixed liquid I;

[0026] b. Add an aqueous solution containing 3g of ammonium persulfate into the above mixed solution I, stir and fully dissolve to obtain mixed solution II;

[0027] c. Add 72g of acrylic acid, 1g of sodium hypophosphite, 5g of mercaptoacetic acid, and 5g of 2-acrylamide-2-methylpropanesulfonic acid mixture dropwise into the mixture II for 2 hours, and react at room temperature after the addition 1h, to obtain mixed solution III;

[0028] d. Add a certain amount of NaOH solution to the mixed solution III until the pH of the mixed solution is 7 to obtain N-methylolacrylamide modified polycarboxylate ceramic water reducer.

[0029] Water-reducing performance of N-methylolacrylamide modified polycarboxylate ceramic water-reducing agent After the ceramic body slurry was left to stand for 0h and 0.5h, the slurry flowed through the fil...

Embodiment 2

[0031] a. Add 100g of N-methylolacrylamide and 100g of water into the reactor at normal temperature and stir and mix to obtain the mixed liquid I;

[0032] b. Add an aqueous solution containing 0.5 g of ammonium persulfate into the above mixed solution I, stir and fully dissolve to obtain mixed solution II;

[0033] c. Add 720g of acrylic acid, 3g of sodium hypophosphite, 1g of mercaptoacetic acid, and 1g of 2-acrylamide-2-methylpropanesulfonic acid mixture dropwise into the mixture II for 4 hours. After the addition, react at room temperature 3h, obtain mixed solution III;

[0034] d. Add a certain amount of NaOH solution to the mixed solution III until the pH of the mixed solution is 9 to obtain N-methylolacrylamide modified polycarboxylate ceramic water reducer.

[0035] Water-reducing performance of N-methylolacrylamide modified polycarboxylate ceramic water-reducing agent After the ceramic body slurry was left to stand for 0h and 0.5h, the slurry flowed through the fille...

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Abstract

The invention relates to N-methylolacrylamide modified polycarboxylate ceramic water reducer, molecularly structurally comprising: an anchor chain segment and a solvation chain segment.The anchor chain segment is composed of N-methylolacrylamide copolymer; the copolymer ceramic water reducer is 3000-20000 in number-average relative molecular weight; the invention also provides a normal-temperature preparation method of the N-methylolacrylamide modified polycarboxylate ceramic water reducer.Owing to the presence of amino and carboxyl groups capable of chelating with anions, the N-methylolacrylamide modified polycarboxylate ceramic water reducer can well release water absorbed by hydrated anions from slurry, thus the slurry has good mobility with low water content.The copolymer ceramic water reducer prepared herein is widely applicable to grinding, pulping and forming processes of ceramic blanks.

Description

technical field [0001] The invention belongs to the technical field of ceramic water reducers, and in particular relates to an N-methylolacrylamide modified polycarboxylate ceramic water reducer and its normal temperature preparation method and application. Background technique [0002] Ceramic water reducer is also called debonding agent and dispersant. Its function is to improve the fluidity of ceramic slurry and glaze, so that the slurry and glaze can achieve higher dispersion effect and requirements under the condition of low water content. liquidity. The addition of water reducing agent not only shortens the drying and sintering time of ceramic slurry and glaze layer, reduces production cost, but also plays the role of energy saving and emission reduction. [0003] Ceramic water reducers include inorganic salt ceramic water reducers, organic small molecule ceramic water reducers, polymer ceramic water reducers and their compound water reducers. The water reducers curr...

Claims

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Application Information

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IPC IPC(8): C08F220/58C08F220/06C04B35/634
CPCC04B35/63444C08F220/58C08F220/06
Inventor 谢义鹏许钧强康伦国姚东生
Owner 深圳市名轩建材科技有限公司
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