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Use of cationic quaternary ammonium salt polycarboxylic acid water reducing agent in preparation of ceramics

A technology of quaternary ammonium salt polycarboxylic acid and water reducing agent, applied in the field of water reducing agent, can solve the problems of ineffective steric hindrance and weak adsorption, achieve good dispersion and water reducing effect, improve fluidity, Increase the effect of steric hindrance effect

Active Publication Date: 2016-03-30
GUANGDONG REDWALL NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Comb-type polycarboxylate superplasticizer has a short main chain and many and long branched chains, and the ceramic clay particles with a layered microstructure are mostly point-plane structures, and the adsorption is not firm, so it cannot be effectively used. Steric hindrance

Method used

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  • Use of cationic quaternary ammonium salt polycarboxylic acid water reducing agent in preparation of ceramics
  • Use of cationic quaternary ammonium salt polycarboxylic acid water reducing agent in preparation of ceramics
  • Use of cationic quaternary ammonium salt polycarboxylic acid water reducing agent in preparation of ceramics

Examples

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Embodiment 1

[0088] An embodiment of the cationic quaternary ammonium polycarboxylate water reducer of the present invention, the cationic quaternary ammonium polycarboxylate water reducer of the present invention is prepared by the following method:

[0089] 1), the synthesis of active intermediates

[0090] Inject 5 mol of prenyl alcohol, 1 g of sodium hydride, 25 mol of ethylene oxide, and 5 mol of epichlorohydrin into a closed autoclave, feed nitrogen, stir, and react at 80° C. for 10 h to obtain the active intermediate of the reaction product.

[0091] 2) Synthesis of active macromers

[0092] 1mol triethylamine and hydroquinone are added in the flask, be warmed up to 10 ℃, slowly add dropwise the triethylamine solution containing the active intermediate synthesized in 5mol step (1), the consumption of described hydroquinone is described After the addition of 0.02% of the moles of the active intermediate is completed, the reaction is continued at 10° C. for 10 h to obtain the active ...

Embodiment 2

[0096] An embodiment of the cationic quaternary ammonium polycarboxylate water reducer of the present invention, the cationic quaternary ammonium polycarboxylate water reducer of the present invention is prepared by the following method:

[0097] 1), the synthesis of active intermediates

[0098] Inject 5 mol of isobutenyl alcohol, 4 g of sodium hydride, 500 mol of ethylene oxide, 250 mol of propylene oxide, and 750 mol of epibromohydrin into a closed autoclave, stir, and react at 150°C for 2 hours to obtain the active intermediate of the reaction product.

[0099] 2) Synthesis of active macromers

[0100] Add 2 mol of trimethylamine and hydroquinone into the flask, raise the temperature to 80° C., slowly add dropwise the trimethylamine solution containing 5 mol of the active intermediate synthesized in step (1), the amount of said hydroquinone being the active intermediate 0.03% of the number of moles of the body, after the dropwise addition, at 80 ° C, the reaction was cont...

Embodiment 3

[0104] An embodiment of the cationic quaternary ammonium polycarboxylate water reducer of the present invention, the cationic quaternary ammonium polycarboxylate water reducer of the present invention is prepared by the following method:

[0105] 1), the synthesis of active intermediates

[0106] Inject 5 mol allyl alcohol, 2 g sodium hydride, 1000 mol ethylene oxide, and 400 mol epoxy iodopropane into a closed autoclave, stir, and react at 100° C. for 6 h to obtain the active intermediate of the reaction product.

[0107] 2) Synthesis of active macromers

[0108] Add 3mol of tripropylamine and hydroquinone into the flask, heat up to 40°C, slowly add dropwise the tripropylamine solution containing 5mol of the active intermediate synthesized in step (1), the amount of said hydroquinone being the active intermediate 0.04% of the number of moles of the body, after the dropwise addition, at 40 ° C, the reaction was continued for 8 hours to obtain the active macromonomer.

[0109...

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Abstract

The invention provides ceramic slurry. The ceramic slurry comprises ceramic clay, a cationic quaternary ammonium salt polycarboxylic acid water reducing agent and water, wherein the cationic quaternary ammonium salt polycarboxylic acid water reducing agent is a compound represented by the formula (I) or (II). The invention also provides ceramics prepared from the ceramic slurry, and also provides a use of the cationic quaternary ammonium salt polycarboxylic acid water reducing agent in preparation of the ceramics. The cationic quaternary ammonium salt polycarboxylic acid water reducing agent is introduced in the ceramic slurry, has excellent dispersion effect on ceramic clay particles in the ceramic slurry, can reduce the viscosity of the ceramic slurry, can increase the fluidity of the ceramic slurry, improves the stability of the ceramic slurry, reduces the use amount of water, and can be widely used in processes of mud making, slurry grinding and glaze preparation.

Description

technical field [0001] The invention relates to the use of a water reducer, in particular to the use of a cationic quaternary ammonium salt polycarboxylate water reducer in preparing ceramics. Background technique [0002] Ceramic superplasticizer, also known as decoagulant, dispersant, diluent or debonding agent, is a widely used ceramic additive, which is used in the process of mud selection, grinding and glaze making in the ceramic industry. The role of the ceramic water reducer is to improve the fluidity of the glaze through the electrokinetic potential of the system, so that it can have appropriate viscosity, good fluidity, and good stability when the moisture content is reduced, avoiding glaze shrinkage and other phenomena, and improving product durability. At the same time, it can also reduce the drying time of the glaze layer, reduce the drying energy consumption, and reduce the production cost. Therefore, the use of excellent water reducing agents can promote the d...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F220/06C08F2/38C04B33/13C08G65/333C08G65/28
CPCC04B33/1305C04B35/63444C08F2/38C08F283/065C08G65/2609C08G65/33306C08F220/06
Inventor 张小富赵利华白淑英李论
Owner GUANGDONG REDWALL NEW MATERIALS
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