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Polycarboxylic acid dispersing agent applicable to aluminate binding agents and preparation method thereof

A technology of aluminate binder and polycarboxylic acid, applied in the chemical field, can solve problems such as poor dispersibility, and achieve the effect of increasing fire resistance and hydrophilic properties

Inactive Publication Date: 2019-07-26
山东圣川新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of poor dispersibility of existing aluminate binders, the present invention provides a new polycarboxylic acid dispersant and a preparation method thereof. The polycarboxylic acid dispersant can effectively disperse aluminate binders and also Able to effectively bond aluminate binders to contact surfaces

Method used

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  • Polycarboxylic acid dispersing agent applicable to aluminate binding agents and preparation method thereof
  • Polycarboxylic acid dispersing agent applicable to aluminate binding agents and preparation method thereof
  • Polycarboxylic acid dispersing agent applicable to aluminate binding agents and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Take raw material A, pass nitrogen gas at room temperature for 15 minutes, heat up to 120°C, add adipic acid, and pass HCl, keep warm for 60 minutes to obtain compound I, the molar ratio of compound A to HCl is 1:1.25 , the quality of oxalic acid is 10% of the compound A quality;

[0028] (2) Add the compound I prepared in step (1) into the reaction kettle, and feed nitrogen to the pressure of 0.2 ~ 0.3Mpa in the kettle, add Na(OH) 2, and feed ethylene oxide, keeping the temperature at 120 ~140℃, react for 30~50min, get compound II, the molar ratio of ethylene oxide to compound I is 1:1.5;

[0029] (3) Add compound III, polymerization inhibitor, and deionized water into the reaction vessel, stir evenly and heat up to 100°C, slowly add an aqueous solution of potassium persulfate, and slowly add an aqueous solution of compounds B and C at a rate of 1d / s, the dropwise addition is completed, the heat preservation reaction is stopped for 8h, the reactant is cooled to r...

Embodiment 2

[0031] (1) Take raw material A, pass nitrogen gas at room temperature for 5 minutes, heat up to 80°C, add adipic acid, and pass HCl, keep warm for 40 minutes to prepare compound I, the molar ratio of compound A to HCl is 1:1 , the quality of oxalic acid is 10% of the compound A quality;

[0032] (2) Add the compound I prepared in step (1) into the reaction kettle, and feed nitrogen to the pressure of 0.2Mpa in the kettle, add Na(OH)2, and feed ethylene oxide, keep the temperature at 120°C, After reacting for 30 minutes, compound II was obtained, and the molar ratio of ethylene oxide to compound I was 1:1;

[0033] (3) Add compound III, polymerization inhibitor, and deionized water into the reaction vessel, stir evenly and heat up to 80-100°C, slowly add aqueous solution of sodium persulfate, and slowly add aqueous solutions of compounds B and C at a rate of 0.5~1d / s, the dropwise addition is completed, heat preservation reaction for 3~8h, stop heating, cool the reactant to ro...

Embodiment 3

[0035] (1) Take raw material A, pass nitrogen gas at room temperature for 12 minutes, heat up to 100°C, add adipic acid, and pass HCl, keep warm for 45 minutes to obtain compound I, the molar ratio of compound A to HCl is 1:1.20 , the quality of oxalic acid is 12% of the compound A quality;

[0036] (2) Add the compound I prepared in step (1) into the reaction kettle, and feed nitrogen to the pressure of 20.3Mpa in the kettle, add Na(OH)2, and feed ethylene oxide, keep the temperature at 135°C, After reacting for 45 minutes, compound II was obtained, and the molar ratio of ethylene oxide to compound I was 1:1.3;

[0037] (3) Add compound III, polymerization inhibitor, and deionized water into the reaction vessel, stir evenly and heat up to 90°C, slowly add ammonium persulfate aqueous solution, and slowly add compound B and C aqueous solutions at a rate of 0.5d / s, the dropwise addition is completed, the insulation reaction is stopped for 6h, the reactant is cooled to room tem...

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Abstract

The invention belongs to the field of chemical industry and particularly relates to a polycarboxylic acid dispersing agent applicable to aluminate binding agents and a preparation method thereof. Thepolycarboxylic acid dispersing agent applicable to the aluminate binding agents has a high steric hindrance by introducing the structure of polyethylene glycol to effectively disperse aluminates, withthe existence of hydrophilic groups such as carboxyl groups and sulfonic groups, enhances the hydrophilicity of the aluminate binding agents, and by introducing chlorine atoms, can effectively enhance the fireproof performance.

Description

technical field [0001] The application belongs to the field of chemical industry, and in particular relates to a polycarboxylic acid dispersant suitable for aluminate binders and a preparation method thereof. Background technique [0002] Aluminate cement is mainly used to prepare refractory castables, refractory concrete, and refractory mortar, and acts as a binder. Since the late 1950s, refractory concrete has been greatly developed in my country and is widely used in petroleum, chemical, construction, hydropower, machinery and other industrial sectors. However, due to the poor heat resistance of Portland cement, dehydration or decomposition will occur at 250°C, resulting in a decrease in the strength of the cement stone. When heated above 700°C, the cement stone will be destroyed. Therefore, Portland cement cannot be used as a binder for refractory concrete. Aluminate cement has better heat resistance at high temperature and can be used in high temperature parts, so alu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/32C08F283/06C08F220/06C08F212/14C08G65/28
CPCC04B24/32C04B2103/408C08F283/065C08G65/2639C08F220/06C08F212/14
Inventor 封吉圣李斌
Owner 山东圣川新材料科技股份有限公司