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Polycarboxylate superplasticizer for ceramics and preparation method thereof

A technology of polycarboxylic acid and water reducing agent, which is applied in the field of polycarboxylic acid water reducing agent for ceramics and its preparation, can solve the problems of low water reduction rate, general reduction effect, and high energy consumption of spray drying tower, so as to reduce drying energy consumption , Good water-reducing effect and shortening grinding time

Pending Publication Date: 2022-03-01
SICHUAN SEDAR CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a polycarboxylate water reducer for ceramics and its preparation method to solve the problem that when the water reducer in the prior art is used in the ceramic industry, the water reducing rate is low and the reduction effect is general. Technical problem of high energy consumption when drying

Method used

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  • Polycarboxylate superplasticizer for ceramics and preparation method thereof
  • Polycarboxylate superplasticizer for ceramics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Include the following steps:

[0033] S1. Uniformly disperse the modified silicon dioxide in deionized water to obtain liquid A;

[0034] S2, diluting acrylic acid with deionized water to obtain liquid B;

[0035] S3, diluting the reducing agent and the chain transfer agent with deionized water to obtain liquid C;

[0036] S4, add acrylamide, 2-acrylamide-2-methylpropanesulfonic acid, maleic anhydride, allyl alcohol polyoxyethylene ether, oxidizing agent, initiator and remaining deionized water (preparation A liquid, B liquid and the remaining deionized water after liquid C), and stir evenly, be warmed up to reaction temperature 40 ℃;

[0037] S5. Keep the reaction temperature at 40°C, slowly add liquid B and liquid C dropwise to the reaction vessel under stirring, and complete the dropwise addition of liquid B and liquid C within 2.5 hours; after the liquid B and liquid C are added dropwise, Insulation reaction for 2.5h;

[0038] S6. Add liquid A to the reaction ve...

Embodiment 2

[0041] Include the following steps:

[0042] S1. Uniformly disperse the modified silicon dioxide in deionized water to obtain liquid A;

[0043] S2, diluting acrylic acid with deionized water to obtain liquid B;

[0044] S3, diluting the reducing agent and the chain transfer agent with deionized water to obtain liquid C;

[0045] S4, add acrylamide, 2-acrylamide-2-methylpropanesulfonic acid, maleic anhydride, allyl alcohol polyoxyethylene ether, oxidizing agent, initiator and remaining deionized water (preparation A liquid, B liquid and the remaining deionized water after liquid C), and stir evenly, be warmed up to reaction temperature 20 ℃;

[0046] S5. Keep the reaction temperature at 20°C, slowly add liquid B and liquid C to the reaction vessel under stirring, and complete the addition of liquid B and liquid C within 3 hours; after the addition of liquid B and liquid C is completed, keep warm Reaction 3h;

[0047] S6. Add liquid A to the reaction vessel under stirring a...

Embodiment 3

[0050] Include the following steps:

[0051] S1. Uniformly disperse the modified silicon dioxide in deionized water to obtain liquid A;

[0052] S2, diluting acrylic acid with deionized water to obtain liquid B;

[0053] S3, diluting the reducing agent and the chain transfer agent with deionized water to obtain liquid C;

[0054] S4, add acrylamide, 2-acrylamide-2-methylpropanesulfonic acid, maleic anhydride, allyl alcohol polyoxyethylene ether, oxidizing agent, initiator and remaining deionized water (preparation A liquid, B liquid and the remaining deionized water after liquid C), and stir evenly, be heated up to reaction temperature 60 ℃;

[0055] S5. Keep the reaction temperature at 60°C, slowly add liquid B and liquid C to the reaction vessel under stirring, and complete the addition of liquid B and liquid C within 2 hours; after the addition of liquid B and liquid C is completed, keep warm Reaction 2h;

[0056] S6. Add liquid A to the reaction vessel under stirring a...

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Abstract

The invention discloses a polycarboxylic acid water reducing agent for ceramics and a preparation method thereof, and solves the technical problems that when a water reducing agent in the prior art is applied to the ceramic industry, the water reducing rate is relatively low, the reducing effect is general, and the energy consumption is relatively high when a spray drying tower is used for drying. The water reducer is prepared from the following raw materials in parts by weight: 6-8 parts of acrylic acid; 3 to 6 parts of acrylamide; 5 to 8 parts of 2-acrylamide-2-methylpropanesulfonic acid; 4-7 parts of maleic anhydride; 2 to 5 parts of allyl alcohol polyoxyethylene ether; 3-7 parts of an oxidant; 6-10 parts of a reducing agent; 2-4 parts of a chain transfer agent; 2-4 parts of an initiator; 4-8 parts of modified silicon dioxide; and 100 to 120 parts of deionized water. When the water reducing agent is applied to the ceramic industry, the water reducing rate is high, the dispersion effect of ceramic slurry is good, and the energy consumption of a spray drying tower during drying is greatly reduced.

Description

technical field [0001] The invention relates to the field of water reducers, in particular to a polycarboxylate water reducer for ceramics and a preparation method thereof. Background technique [0002] Ceramic water reducer is widely used in the process of mud making, grinding and glaze making in the ceramic industry. It can make the mud glaze with low water content, good fluidity, no recondensation and good stability. Ceramic superplasticizer is also known as decoagulant, dispersant, diluent or debonding agent. The superplasticizer releases the free water adsorbed by the clay through the replacement of its own cations with the cations in the clay, and through the side chain hydrophilic groups The effect of improving the fluidity of the mud, maintaining the balance of the slurry system, and achieving the effect of reducing water. [0003] At present, the spray drying method is generally used to produce powder in the ceramic industry. The powder prepared by this method has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/06C08F220/06C08F220/56C08F220/58C08F222/06C04B35/634
CPCC08F283/065C04B35/63444C08F220/06C08F220/56C08F220/585C08F222/06
Inventor 余建华张秋萍鲜芳燕王正凯董振鹏于学龙
Owner SICHUAN SEDAR CHEM
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