High-performance polycarboxylate water reducing agent and preparation method thereof

A technology of polycarboxylic acid and water reducing agent, applied in the field of building materials, can solve the problems of poor slump retention performance and low water reduction rate, and achieve the effects of good air entrainment, high water reduction rate and enhanced slump retention effect.

Inactive Publication Date: 2018-10-19
HUAIBEI XURI BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-performance polycarboxylate water reducer to solve the problem of "low water reducing rate and poor slump retention performance" raised in the above background technology

Method used

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  • High-performance polycarboxylate water reducing agent and preparation method thereof
  • High-performance polycarboxylate water reducing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A high-performance polycarboxylate water reducer, made of the following raw materials in parts by weight: 375 parts of water, 300 parts of monomer, 2 parts of catalyst, and 80 parts of material A;

[0025] One or more of allyl alcohol polyoxyethylene ether APEG, isopentenyl alcohol ether TPEG, methallyl alcohol HPEG, propylene polyoxyethylene ether HPEG, methoxy polyethylene glycol MPEG is selected as the monomer ;

[0026] The catalyst is made from the following raw materials in parts by weight: 0.2 parts of initiator, 2 parts of hydrogen peroxide;

[0027] The material A is made of the following raw materials in parts by weight: 30 parts of water, 0.2 parts of vitamin C, 2 parts of stabilizer, and 30 parts of acrylic acid.

Embodiment 2

[0029] A high-performance polycarboxylate water reducer, made of the following raw materials in parts by weight: 600 parts of water, 400 parts of monomer, 4 parts of catalyst, and 120 parts of material A;

[0030] One or more of allyl alcohol polyoxyethylene ether APEG, isopentenyl alcohol ether TPEG, methallyl alcohol HPEG, propylene polyoxyethylene ether HPEG, methoxy polyethylene glycol MPEG is selected as the monomer ;

[0031] The catalyst is made from the following raw materials in parts by weight: 0.5 parts of initiator, 4 parts of hydrogen peroxide;

[0032] The material A is made of the following raw materials in parts by weight: 90 parts of water, 0.5 parts of vitamin C, 5 parts of stabilizer, and 40 parts of acrylic acid.

Embodiment 3

[0034] A high-performance polycarboxylate water reducer, made of the following raw materials in parts by weight: 375 parts of water, 375 parts of monomer, 3 parts of catalyst, and 100 parts of material A;

[0035] One or more of allyl alcohol polyoxyethylene ether APEG, isopentenyl alcohol ether TPEG, methallyl alcohol HPEG, propylene polyoxyethylene ether HPEG, methoxy polyethylene glycol MPEG is selected as the monomer ;

[0036] The catalyst is made from the following raw materials in parts by weight: 0.3 parts of initiator, 2 parts of hydrogen peroxide;

[0037] The material A is made of the following raw materials in parts by weight: 62 parts of water, 0.3 parts of vitamin C, 3.8 parts of stabilizer, and 34 parts of acrylic acid.

[0038] As an optional scheme, the initiator is sodium hypophosphite.

[0039] As an optional solution, the stabilizing agent is one or more of sodium bisulfite, hanging white powder, and sodium metabisulfite.

[0040] The preparation method ...

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Abstract

The invention discloses a high-performance polycarboxylate water reducing agent and a preparation method thereof. The high-performance polycarboxylate water reducing agent is prepared from the following raw materials in parts by weight: 375 to 600 parts of water, 300 to 400 parts of monomers, 2 to 4 parts of catalysts and 80 to 120 parts of materials A. According to the method, the raw materials are sequentially prepared into the high-performance polycarboxylate water reducing agent through the steps of dissolution mixing, flowing addition mixing, heat insulation and the like. The high-performance polycarboxylate water reducing agent prepared by the invention has the advantages that the water reducing rate is high; the slump loss resistant effect is enhanced, and the gas content is high, so that the air-entraining performance is good; the problem of easy water secretion is solved; the process is simple; the performance is stable.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to health-care medicinal wine made from deer heart as a main raw material. Background technique [0002] In the prior art, aliphatic high-efficiency water reducers generally use aldehydes, ketones, and sulfites as the main raw materials, which are condensed through the generation of carbanions to form a hydrophobic hydrocarbon backbone with a certain molecular weight; group, introducing a hydrophilic sulfonic acid group. Under the action of electrostatic repulsion, the aliphatic high-efficiency water reducer can destroy the agglomeration of cement particles in concrete, so that the cement particles are in a dispersed state. The stronger polar groups on the molecular side chains are easy to associate with water molecules, forming a stable hydration film on the surface of cement particles, preventing the mutual agglomeration of cement particles and maintaining the good flu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/06C08F220/06C04B24/26C04B103/30
CPCC04B24/2605C04B2103/302C08F283/06C08F283/065C08F220/06
Inventor 蒋家喜蒋文
Owner HUAIBEI XURI BUILDING MATERIALS
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