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Water reducing agent and improvement method and application thereof

A technology of water reducing agent and aliphatic water reducing agent, which is applied in the field of concrete admixture, can solve the problems of unfavorable long-term storage of aliphatic water reducing agent, and achieve the effect of meeting continuous cycle production, facilitating long-term storage and improving storage stability

Active Publication Date: 2021-04-06
科之杰新材料集团河南有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a water reducer and its improved method and application, aiming to solve the technical problem that the self-condensation reaction of the aliphatic water reducer in the prior art causes the aliphatic water reducer to be unfavorable for long-term storage

Method used

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  • Water reducing agent and improvement method and application thereof
  • Water reducing agent and improvement method and application thereof

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Effect test

Embodiment 1

[0056] A water reducing agent obtained by an improved method, comprising the steps of:

[0057] (1) According to the mass percentage of the synthesized aliphatic water reducer: 2% of the chain terminator sodium sulfite and 3% of sodium metabisulfite are added to the synthesized aliphatic water reducer;

[0058] (2) Mix the chain terminator and the synthesized aliphatic water reducer evenly by means of mechanical stirring;

[0059] (3) Transfer the homogeneously mixed solution in step (2) to a storage tank for storage.

Embodiment 2

[0061] A water reducing agent obtained by an improved method, comprising the steps of:

[0062] (1) According to the mass percentage of the synthesized aliphatic water reducer: 3% of the chain terminator sodium methanesulfonate and 2% of benzenesulfonic acid are added to the synthesized aliphatic water reducer;

[0063] (2) Mix the chain terminator and the synthesized aliphatic water reducer evenly by ventilating;

[0064] (3) Transfer the homogeneously mixed solution in step (2) to a storage tank for storage.

Embodiment 3

[0066] A water reducing agent obtained by an improved method, comprising the steps of:

[0067] (1) According to the mass percentage of the synthesized aliphatic water reducer: 3% of the chain terminator sodium sulfite and 2% of sodium methanesulfonate are added to the synthesized aliphatic water reducer;

[0068] (2) Mix the chain terminator and the synthesized aliphatic water reducer evenly by ventilating;

[0069] (3) Transfer the homogeneously mixed solution in step (2) to a storage tank for storage.

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Abstract

The invention discloses a water reducing agent as well as an improvement method and an application thereof, and the improvement method of the water reducing agent comprises the following steps: (1) adding a chain terminator into a synthesized aliphatic water reducing agent; (2) uniformly mixing a chain terminator with the synthesized aliphatic water reducing agent; and (3) storing the uniformly mixed solution in the step (2); wherein the chain terminator is an inorganic sulfite and / or organic sulfonic acid compound, and the addition amount of the chain terminator is 2%-5% of the mass of the synthesized aliphatic water reducer. According to the improvement method of the water reducing agent, the storage stability of the aliphatic water reducing agent is improved, and long-term storage of the aliphatic water reducing agent is facilitated. The performance of the aliphatic water reducing agent stored by the improved method is kept unchanged and is basically the same as that of the aliphatic water reducing agent which is just produced and synthesized.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a water reducer and its improvement method and application. Background technique [0002] The polycondensation reaction in the production process of the aliphatic water reducer does not terminate the polycondensation reaction with the end of the production of the aliphatic water reducer, because the carbonyl on the molecular end of the synthesized aliphatic water reducer will combine with the aliphatic water reducer The raw material (formaldehyde or acetone) undergoes self-condensation reaction, which leads to the continuous increase of the molecular weight of the aliphatic water-reducing agent, which in turn leads to a decrease in the water-reducing performance of the aliphatic water-reducing agent. Therefore, during the storage process of the aliphatic water reducer, the self-condensation reaction will slowly proceed, resulting in the continuous increase of the mole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/20C04B24/16C04B103/30
CPCC04B40/0039C04B2103/302C04B22/147C04B24/16C04B24/20C04B24/166
Inventor 刘尊玉杜可禄李祥河
Owner 科之杰新材料集团河南有限公司
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