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Comprehensive polycarboxylic acid water reducer with anti-mud and early-strength functions

A comprehensive polycarboxylate technology, applied in the field of comprehensive polycarboxylate water reducers, can solve the problems of lack of mud resistance, difficult preparation methods, and easy corrosion of steel bars, etc., to achieve easy production and preparation, and good slump retention , Improve the effect of using the effect

Inactive Publication Date: 2021-06-11
湖南加美乐素新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional water reducing agents generally have complex formulas and difficult preparation methods. Secondly, their water reducing rate is low, and they do not have anti-mud performance. In addition, they are easy to corrode steel bars when used in conjunction with concrete, so they cannot meet the needs of users. need

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A comprehensive polycarboxylate superplasticizer with anti-mud and early-strength functions. The raw materials according to parts by weight include: 1.0 parts of polyoxyethylene allyl ester macromonomer, 3.0 parts of acrylic acid, methyl 0.5 part of sodium propylene sulfate, 15 parts of initiator, and 0.5 part of anti-mud additive.

[0031] The preparation method of the comprehensive polycarboxylate water reducer with the function of mud resistance and early strength, the specific steps are as follows:

[0032] (1) take each raw material according to parts by weight;

[0033] (2) Polyoxyethylene allyl macromonomer, acrylic acid, and sodium methacrylate sulfate are respectively made into an aqueous solution with a concentration of 20% with deionized water;

[0034] (3) the aqueous solution equipped in the step is added in the chemical reactor vessel, then drip the initiator and anti-sludge resistance agent that takes by weighing;

[0035] (4) After the initiator and th...

Embodiment 2

[0038] A comprehensive polycarboxylate superplasticizer with mud-resistant and early-strength functions. The raw materials include: 1.5 parts of polyoxyethylene allyl macromonomer, 7.0 parts of acrylic acid, 1.5 parts of sodium methacrylate sulfate, Initiator 25 parts, anti-mud additive 1.0 parts.

[0039] The preparation method of the comprehensive polycarboxylate water reducer with the function of mud resistance and early strength, the specific steps are as follows:

[0040] (1) take each raw material according to parts by weight;

[0041] (2) Polyoxyethylene allyl macromonomer, acrylic acid, and sodium methacrylate sulfate are respectively made into an aqueous solution with a concentration of 20% with deionized water;

[0042] (3) the aqueous solution equipped in the step is added in the chemical reactor vessel, then drip the initiator and anti-sludge resistance agent that takes by weighing;

[0043] (4) After the initiator and the anti-mud resistance agent have been adde...

Embodiment 3

[0046] A comprehensive polycarboxylate superplasticizer with mud-resistant and early-strength functions. The raw materials include: 1.25 parts of polyoxyethylene allyl macromonomer, 4.0 parts of acrylic acid, 1 part of sodium methacrylate sulfate, 20 parts of initiator, 0.75 parts of anti-mud additive.

[0047] The preparation method of the comprehensive polycarboxylate water reducer with the function of mud resistance and early strength, the specific steps are as follows:

[0048] (1) take each raw material according to parts by weight;

[0049] (2) Polyoxyethylene allyl macromonomer, acrylic acid, and sodium methacrylate sulfate are respectively made into an aqueous solution with a concentration of 20% with deionized water;

[0050] (3) the aqueous solution equipped in the step is added in the chemical reactor vessel, then drip the initiator and anti-sludge resistance agent that takes by weighing;

[0051] (4) After the initiator and the anti-mud resistance agent have been...

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Abstract

The invention discloses a comprehensive polycarboxylic acid water reducer with anti-mud and early strength functions. The comprehensive polycarboxylic acid water reducer comprises the following raw materials in parts by weight: 1.0 to 1.5 parts of a polyoxyethylene allyl ester macromonomer, 3.0 to 7.0 parts of acrylic acid, 0.5 to 1.5 parts of sodium methallyl sulfate, 15 to 25 parts of an initiator and 0.5 to 1.0 part of an anti-mud additive. The comprehensive polycarboxylic acid water reducer with the anti-mud and early strength functions is simple in formula, simple in preparation method and convenient to produce and prepare, and the prepared comprehensive polycarboxylic acid water reducer with the anti-mud and early strength functions is high in water reducing rate, concrete is good in collapse resistance, low in alkali, free of chlorine and corrosion and free of corrosion to reinforcing steel bars; and the anti-mud additive is used in the formula, so the comprehensive polycarboxylic acid water reducer has good anti-mud performance, and the use effect of the comprehensive polycarboxylic acid water reducer is improved.

Description

technical field [0001] The invention relates to the technical field of water reducer preparation, in particular to a comprehensive polycarboxylate water reducer with the function of mud resistance and early strength. Background technique [0002] Water reducer is a concrete admixture that can reduce the amount of mixing water while maintaining the slump of concrete basically unchanged. Most of them are anionic surfactants, such as lignosulfonate, naphthalenesulfonate formaldehyde polymer, etc. After being added to the concrete mixture, it can disperse the cement particles, improve its workability, reduce the unit water consumption, improve the fluidity of the concrete mixture; or reduce the unit cement consumption and save cement. [0003] The appearance of water reducing agent is divided into water and powder. The solid content of the water agent is generally 20%, 40% (also known as mother liquor), and 60%. The solid content of the powder is generally 98%. According to th...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F220/06C08F228/02C04B24/16C04B103/30
CPCC08F283/065C04B24/165C04B2103/302
Inventor 王伟龙威
Owner 湖南加美乐素新材料股份有限公司