Method for preparing special compound water reducing agent for fireproof material

A technology of composite water reducer and refractory materials, which is applied in the field of preparation of special composite water reducers for refractory materials, which can solve the problems of reducing the high-temperature performance of refractory materials, low addition amount, and more gas deflection holes, etc., so as to improve the uniformity of dispersion , Improve high temperature performance and eliminate bleeding problems

Active Publication Date: 2012-12-19
湖北斯曼新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The following problems exist in the use of water reducing agents for building materials in refractory materials: 1) The amount added is very low, usually not more than 0.1%, and there is a serious uneven mixing phenomenon; 2) When dispersing aluminate cement and special micropowder , wetting is slow, which is not conducive to the control of water addition, and affects the production operation of workers; 3) It is very sensitive to construction temperature and water addition, and slight changes will easily lead to bleeding. 4) After the refractory material is dried, the residual air deviation hole 5) Due to the relatively uneven microstructure, it will reduce the high-temperature performance of refractory materials, such as slag erosion resistance, high-temperature strength, etc.

Method used

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  • Method for preparing special compound water reducing agent for fireproof material
  • Method for preparing special compound water reducing agent for fireproof material
  • Method for preparing special compound water reducing agent for fireproof material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) Synthesis of polycarboxylic acid: the massfraction of 5% ammonium persulfate solution and 20.5 parts by weight of the massfraction of 5% ammonium persulfate solution and the massfraction of 52.5 parts by weight of polyethylene glycol PEG100, 18 parts by weight of methacrylic acid, 9 parts by weight of 10 % of mercaptoethanol solution, and polymerized under the conditions of 1~2 atmospheric pressure and 60~100°C to obtain a mixed solution containing polycarboxylic acid with the structure shown in A. The relative molecular weight of the polycarboxylic acid is 11375,

[0019]

[0020] 2) Control of the carrier slurry: take alumina micropowder as the carrier, fully stir with the mixed solution containing the polycarboxylic acid of the structure shown in A obtained in step 1), control the solid content of the slurry to be 75%, and the viscosity to be 500mPa .S;

[0021] 3) Carrier spray drying: atomize the slurry prepared in step 2) at an atomization rate of 20,000 rpm...

Embodiment 2

[0023] 1) Synthesis of polycarboxylic acid: the massfraction of 5% ammonium persulfate solution and 22 parts by weight of the massfraction of 5% ammonium persulfate solution and the massfraction of 22 parts by weight of the methacrylic acid of the polyethylene glycol PEG100 of 50 parts by weight, 18 parts by weight of 10 parts by weight % of mercaptoethanol solution, and polymerized under the conditions of 1~2 atmospheric pressure and 60~100°C to obtain a mixed solution containing polycarboxylic acid with the structure shown in B, the relative molecular weight of the polycarboxylic acid is 48300,

[0024]

[0025] 2) Control of the carrier slurry: with the alumina micropowder as the carrier, fully stir with the mixed solution containing the polycarboxylic acid of the structure shown in B obtained in step 1), the solid content of the control slurry is 80%, and the viscosity is at 600mPa .S;

[0026] 3) Carrier spray drying: atomize the slurry prepared in step 2) at an atomiz...

Embodiment 3

[0028] 1) Synthesis of polycarboxylic acid: the massfraction of 5% ammonium persulfate solution and 22 parts by weight of methacrylic acid, the massfraction of 7 parts by weight of the polyethylene glycol PEG100 of 55 parts by weight, the massfraction of 16 parts by weight is 10 % of mercaptoethanol solution, and polymerized under the conditions of 1~2 atmospheric pressure and 60~100°C to obtain a mixed solution containing polycarboxylic acid with the structure shown in C. The relative molecular weight of the polycarboxylic acid is 28650,

[0029]

[0030] 2) Control of the carrier slurry: take the alumina micropowder as the carrier, fully stir with the mixed solution containing the polycarboxylic acid of the structure shown in C obtained in step 1), control the solid content of the slurry to be 70%, and the viscosity to be 400mPa .S;

[0031] 3) Carrier spray drying: atomize the slurry prepared in step 2) at an atomization rate of 25,000 rpm, and dry at a drying temperatur...

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Abstract

The invention discloses a method for preparing a special compound water reducing agent for a fireproof material. The method comprises the following steps of 1, polycarboxylic acid synthesizing: mixing 50-60 parts by weight of polyethylene glycol PEG100, 15-20 parts by weight of methacrylic acid, 5-10 parts by weight of ammonium persulfate solution with 5 percent of mass fraction and 18-25 parts by weight of mercapto ethanol solution with 10 percent of mass fraction, and polymerizing and reacting at 1-2 barometric pressure and 60-100 DEG C to obtain a polycarboxylic acid mixed solution; 2, carrier slurry control: using alumina micro powder as a carrier to be fully stirred with the obtained polycarboxylic acid mixed solution, controlling the solid content of the slurry to be 50-80 percent and the viscosity of the slurry to be 100-1000 mPa.S; and 3, carrier spraying and drying: atomizing and drying the mixed slurry. The compound water reducing agent prepared by the method has the advantages of easiness in dispersion, fast wetting, high water reducing rate, no bleeding, improved high-temperature performance and the like.

Description

technical field [0001] The invention relates to a method for preparing a water reducer, in particular to a method for preparing a special composite water reducer for refractory materials. Background technique [0002] At present, there is no composite high-efficiency water reducer dedicated to refractory materials in the market, and the water reducer widely used in the industry is basically directly introduced by the building material industry. The performance characteristics of the water reducing agent used in the building material industry are far from the requirements of the refractory industry. The water reducing agent used in the building material industry is mainly used to disperse highly alkaline Portland cement. The refractory products are basically neutral or low alkalinity, with aluminate cement as the binder, and some proprietary micropowders, such as silica micropowder, activated alumina micropowder, etc. are added. [0003] The following problems exist in the u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/16C08F283/06C08F220/06C04B103/30
Inventor 刘学新许兴山
Owner 湖北斯曼新材料股份有限公司
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