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A method for preparing adhesive reducer from amphoteric polyether polycarboxylic acid compound

A technology of carboxylic acid compound and glue reducer, which is applied in the field of preparing glue reducer from amphoteric polyether polycarboxylate compounds, can solve the problem of large difference in molecular structure types, restricts the application and development of glue reducer, and has no steric hindrance. It can achieve the effect of good adaptability, ensuring steric hindrance and delaying hydration reaction

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

However, the molecular weight of the main functional units of the gel reducer is generally small, basically does not have steric hindrance, and the gel reducer and dispersing ability is limited.
The molecular structure types of glue reducer and water reducer are quite different, and there is a certain matching problem, which seriously restricts the application and development of glue reducer

Method used

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  • A method for preparing adhesive reducer from amphoteric polyether polycarboxylic acid compound
  • A method for preparing adhesive reducer from amphoteric polyether polycarboxylic acid compound
  • A method for preparing adhesive reducer from amphoteric polyether polycarboxylic acid compound

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1 (each component consumption is parts by weight)

[0046] 1. Preparation of amphoteric polyether polycarboxylic acid compound: the amphoteric polyether polycarboxylic acid compound is prepared from the following components by weight, and the preparation method is carried out according to the following steps:

[0047] 1), 290 parts of 800-molecule allyl polyoxyethylene ether, 5 parts of methacryloyloxyethyltrimethylammonium chloride, 2 parts of sodium vinyl sulfonate, and 1.5 parts of dimethyl-vinyl phosphate and 180 parts of water are added to the reactor, stirred and heated until it dissolves;

[0048] 2), measure the temperature in the kettle, control the temperature at 35°C, and after the temperature is stable, add 3.7 parts of 27.5% industrial grade hydrogen peroxide at one time;

[0049] 3) After 5 minutes, start to drop solution B and solution A in sequence. After solution B is added, start to add solution A dropwise within 10 minutes. The time for ad...

Embodiment 2

[0052] Embodiment 2 (each component consumption is parts by weight)

[0053] 1. Preparation of amphoteric polyether polycarboxylic acid compound: the amphoteric polyether polycarboxylic acid compound is prepared from the following components by weight, and the preparation method is carried out according to the following steps:

[0054] 1), 295 parts of 800 molecular weight methallyl polyoxyethylene ether, 4 parts of methacryloylpropyltrimethylammonium chloride, 1.8 parts of sodium acrylsulfonate, polyoxyethylene ether glycerol phosphate Add 1.4 parts and 185 parts of water into the reaction kettle, stir and heat until it dissolves;

[0055] 2), measure the temperature in the kettle, control the temperature at 36°C, and after the temperature is stable, add 3.5 parts of 27.5% industrial grade hydrogen peroxide at one time;

[0056] 3) After 5 minutes, start to drop solution B and solution A in sequence. After solution B is added, start to add solution A dropwise within 10 minut...

Embodiment 3

[0059] Embodiment 3 (each component consumption is parts by weight)

[0060] 1. Preparation of amphoteric polyether polycarboxylic acid compound: the amphoteric polyether polycarboxylic acid compound is prepared from the following components by weight, and the preparation method is carried out according to the following steps:

[0061] 1), 300 parts of 800 molecular weight isopentenol polyoxyethylene ether, 3 parts of methacryloylpropyltrimethylammonium chloride, 0.5 parts of sodium acrylsulfonate, 1.3 parts of methacryloyloxyethyl phosphate 190 parts and 190 parts of water are added to the reactor, stirred and heated until it dissolves;

[0062] 2), measure the temperature in the kettle, control the temperature at 37°C, after the temperature is stable, add 3 parts of 27.5% by mass industrial grade hydrogen peroxide at one time;

[0063] 3) After 5 minutes, start to drop solution B and solution A in sequence. After solution B is added, start to add solution A dropwise within ...

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Abstract

The invention provides a method for preparing a glue reducer from an amphoteric polyether polycarboxylic acid compound. The described amphoteric polyether polycarboxylic acid compound is prepared from the following components by weight: 35-45 parts of amphoteric polyether polycarboxylic acid compound, 4-10 parts of alcohol amine compound, 0.5-4 part of polyol, 0.08-0.6 part of lubricant, 0.02-0.08 part of emulsifying dispersant, 0.01-0.1 part of isothiocyanate compound, the balance is water, and the total mass is 100 parts. The above-mentioned components are put into the reaction kettle and fully stirred for 0.5 hours, namely A glue reducer prepared from the amphoteric polyether polycarboxylic acid compound is obtained. The present invention uses 800 molecular weight polyether macromonomers and small cationic monomers as main raw materials to prepare polycarboxylate adhesive reducer molecular configurations with shorter main chains and shorter side chains, so that the adhesive reducer molecules have a better space While avoiding steric hindrance, it avoids direct competition with polycarboxylate superplasticizers.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for preparing a glue reducer from an amphoteric polyether polycarboxylic acid compound. Background technique [0002] Concrete reducers, also known as concrete synergists, can improve the workability and later strength of concrete, or significantly reduce the amount of concrete cementitious materials, and reducers have attracted more and more attention from the industry. At this stage, although the development and application of adhesive reducers are becoming more and more extensive, the adaptability problems frequently occur in practical applications, which affect the further development of adhesive reducers. At present, most of the adhesive reducer components are alcohol amine compounds as the main functional components, and the types are relatively single. Therefore, further expanding the preparation methods of the adhesive reducer is of great significance ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F220/34C08F230/02C08F228/02C04B24/16C04B103/30
CPCC04B24/165C04B2103/302C08F283/065C08F220/34C08F230/02C08F228/02
Inventor 柯凯张雨婷严明陈艳林熊焰
Owner HUBEI UNIV OF TECH
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