A kind of preparation method of glue reducer for polycarboxylate water reducer matching

A water reducer and glue reducer technology, applied in the field of building materials, can solve the problems of matching, large differences in molecular structure types, and restrictions on the application and development of glue reducers, so as to reduce the impact, improve the mixing effect, The effect of ensuring the presence of air bubbles

Inactive Publication Date: 2021-03-02
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The molecular structure types of the two admixtures are quite different, and there is a problem of compatibility, which seriously restricts the application and development of the adhesive reducer

Method used

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  • A kind of preparation method of glue reducer for polycarboxylate water reducer matching
  • A kind of preparation method of glue reducer for polycarboxylate water reducer matching

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 (each component consumption is parts by weight)

[0038] 1. Preparation of polymerized polyol amine modified compound: The specific preparation steps of polymerized polyol amine modified compound are as follows:

[0039] 1), put 30 parts of butyl ethanolamine, 57 parts of ethylene glycol diglycidyl ether, and 5 parts of methacryloylpropyltrimethylammonium chloride into the reaction kettle, and stir evenly;

[0040] 2) Control the temperature at 60°C, put in 3 parts of baked products of a composition of sodium bisulfate and potassium sulfate with a mass ratio of 1:1 solidified by zirconia, and continue stirring for 1 hour;

[0041] 3) At the end of the reaction time, when the temperature is controlled at 30°C, 5 parts of a composition of diethanolamine and triisopropanolamine with a mass ratio of 1:1 are added, and the catalyst carrier is separated by filtration to obtain a polymerized polyol amine modified compound.

[0042] 2. Preparation of glue reducer:...

Embodiment 2

[0044] Embodiment 2 (each component consumption is parts by weight)

[0045] 1. Preparation of polymerized polyol amine modified compound: The specific preparation steps of polymerized polyol amine modified compound are as follows:

[0046] 1), put 32 parts of L-phosphatidylethanolamine, 60 parts of dipropylene glycol diglycidyl ether, and 4.5 parts of methacryloyloxyethyl dimethyl benzyl ammonium chloride into the reaction kettle, and stir evenly;

[0047] 2) Control the temperature at 65°C, put in 0.1 part of the baked product of the composition of ammonium persulfate and potassium hydrogen persulfate with a mass ratio of 1:1 solidified by iron oxide, and continue stirring for 1.5 hours;

[0048] 3) At the end of the reaction time, when the temperature is controlled to 26°C, 3.4 parts of sodium hydroxide is added, and the catalyst carrier is separated by filtration to obtain a polymerized polyol amine modified compound.

[0049] 2. Preparation of glue reducer: The glue redu...

Embodiment 3

[0051] Embodiment 3 (each component consumption is parts by weight)

[0052] 1. Preparation of polymerized polyol amine modified compound: The specific preparation steps of polymerized polyol amine modified compound are as follows:

[0053] 1) Put 40 parts of 1,2-dilauroylphosphatidylethanolamine, 50 parts of 1,6-hexanediol diglycidyl ether, and 3.5 parts of 2-acryloyloxyethoxytrimethylsilane into the reaction kettle , stir evenly;

[0054] 2) Control the temperature at 70°C, put in 2.5 parts of baked products of a composition of sodium sulfate and potassium persulfate with a mass ratio of 1:1 solidified by titanium oxide, and continue stirring for 2 hours;

[0055] 3) At the end of the reaction time, when the temperature is controlled to 25° C., 4 parts of potassium hydroxide are added, and the catalyst carrier is separated by filtration to obtain a polymerized polyol amine modified compound.

[0056] 2. Preparation of glue reducer: The glue reducer for matching polycarboxy...

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Abstract

The invention provides a preparation method of a glue reducer for matching polycarboxylate water reducers. The glue reducer for polycarboxylate water reducer matching is prepared from the following components by weight: 35-55 parts of polymerized polyol amine modified compound, 0.05-0.1 part of penetrant, 0.1-0.5 part of lubricant, 0.01-0.1 parts of emulsifying dispersant, 0.5-5 parts of sulfate solubilizer, the rest is water, the total mass is 100 parts, the above components are fully stirred in the reaction kettle for 0.5 hours, and the polycarboxylate superplasticizer is obtained. Reducer. The present invention uses diglycidyl ether compounds and small cationic monomers to modify and polymerize alcohol amine compounds to obtain a polymerized polyol amine modified compound. The compound has certain steric hindrance, and after modification, it can be combined The polycarboxylate superplasticizer has better matching, and the introduced cationic small monomer improves the dispersion ability of the glue reducer to the negatively charged micro-aggregate.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for preparing a glue reducer for matching polycarboxylate water reducers. Background technique [0002] Concrete reducer is a new generation of concrete admixture, which can reduce the amount of cementitious materials in concrete by about 10-15%, improve the workability of concrete, and increase the strength of concrete. However, in practical applications, ordinary glue reducers often have adaptability problems, which are affected by the material of concrete raw materials, especially water reducers. Among them, the polycarboxylate superplasticizer is the most widely used and the most used type of water reducer, and the matching between the glue reducer and the polycarboxylate water reducer is one of the main factors affecting the adaptability of the glue reducer. [0003] Polycarboxylate superplasticizer is an anionic surfactant and a high molecular weight po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/26C04B24/32C04B24/42C04B24/28C04B24/16C08F283/10C08G59/14
CPCC04B24/163C04B24/243C04B24/26C04B24/281C04B24/42C04B40/0039C08F283/10C08G59/1477C04B24/16C04B24/085C04B24/04C04B24/124C04B24/20C04B24/32C04B22/087
Inventor 柯凯张雨婷严明陈艳林熊焰
Owner HUBEI UNIV OF TECH
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