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Concrete protective agent and preparation method thereof

A protective agent and concrete technology, which is applied in the field of concrete protective agent and its preparation, can solve the problems of poor durability of concrete, and achieve the effects of good water resistance, convenient operation and simple process

Inactive Publication Date: 2019-09-13
贝正河北工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of poor durability of existing concrete, the invention provides a concrete protective agent and a preparation method thereof

Method used

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  • Concrete protective agent and preparation method thereof
  • Concrete protective agent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A concrete protective agent, comprising the following raw material components in parts by mass: 22 parts of polyurethane emulsion; 19 parts of butyl acrylate; 15 parts of methyl methacrylate; 0.2 parts of acrylic acid; 3 parts of diacetone propionamide; 0.8 parts of sodium persulfate 3 parts; 3 parts of adipic acid dihydrazide; 38 parts of deionized water.

[0029] Wherein, the polyurethane emulsion includes the following raw material components in parts by mass: 2 parts of polyoxypropylene glycol; 4 parts of castor oil; 3 parts of diphenylmethane diisocyanate; 0.6 part of dimethylol propionic acid; 25 parts of acetone; 0.2 parts of dibutyltin laurate; 0.2 parts of triethylamine; 65 parts of deionized water.

[0030] The preparation method of above-mentioned concrete protective agent, comprises the steps:

[0031] (1) After mixing polyoxypropylene glycol, castor oil and diphenylmethane diisocyanate in a reactor under a nitrogen atmosphere, after reacting at a constant ...

Embodiment 2

[0037] A concrete protective agent, comprising the following raw material components in parts by mass: 21 parts of polyurethane emulsion; 20 parts of butyl acrylate; 16 parts of methyl methacrylate; 0.3 parts of acrylic acid; 4 parts of diacetone propionamide; 4 parts; 4 parts of adipic acid dihydrazide; 35 parts of deionized water.

[0038] Wherein, the polyurethane emulsion includes the following raw material components in parts by mass: 4 parts of polyoxypropylene glycol; 5 parts of castor oil; 3 parts of diphenylmethane diisocyanate; 1 part of dimethylol propionic acid; 28 parts of acetone; 0.5 parts of dibutyltin laurate; 0.5 parts of triethylamine; 58 parts of deionized water.

[0039] The preparation method of above-mentioned concrete protective agent, comprises the steps:

[0040] (1) After mixing polyoxypropylene glycol, castor oil and diphenylmethane diisocyanate in a reactor under a nitrogen atmosphere, after reacting at a constant temperature of 45°C for 20 minutes,...

Embodiment 3

[0046] A concrete protective agent, comprising the following raw material components in parts by mass: 20 parts of polyurethane emulsion; 21 parts of butyl acrylate; 17 parts of methyl methacrylate; 0.41 parts of acrylic acid; 4 parts of diacetone propionamide; 4 parts; 4 parts of adipic acid dihydrazide; 32 parts of deionized water.

[0047] Wherein, the polyurethane emulsion includes the following raw material components in parts by mass: 6 parts of polyoxypropylene glycol; 3 parts of castor oil; 4 parts of diphenylmethane diisocyanate; 0.3 part of dimethylol propionic acid; 30 parts of acetone; 0.3 parts of dibutyltin laurate; 0.4 parts of triethylamine; 56 parts of deionized water.

[0048] The preparation method of above-mentioned concrete protective agent, comprises the steps:

[0049] (1) After mixing polyoxypropylene glycol, castor oil and diphenylmethane diisocyanate in a reactor under a nitrogen atmosphere, after reacting at a constant temperature of 45°C for 20 min...

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Abstract

Relating to the technical field of concrete protection, the invention in particular discloses a concrete protective agent and a preparation method thereof. The concrete protective agent includes the following raw materials by mass: 18-23 parts of a polyurethane emulsion; 30-43 parts of an acrylate monomer; 0.1-1 part of a carboxyl-containing monomer; 2-10 parts of a carbonyl-containing monomer; 0.2-0.8 part of an initiator; 2-9 parts of a cross-linking agent; and 32-38 parts of deionized water. The protective agent provided by the invention can be applied to brush coating on a concrete surfaceto form a protective coating, thus obstructing water outside the concrete from infiltrating the concrete, not impeding the interior water from discharging outwards, improving the chlorine ion penetration resistance and carbonization resistance of concrete, and improving the concrete durability.

Description

technical field [0001] The invention relates to the technical field of concrete protection, in particular to a concrete protection agent and a preparation method thereof. Background technique [0002] Concrete is one of the most widely used and used building materials in civil engineering, and its strength has been continuously improved during the development of nearly a hundred years. However, concrete has been exposed to the environment such as air and rain all the year round, and its durability has been paid more and more attention by people. [0003] People have always believed that concrete is a very durable material. It was not until the late 1970s that developed countries gradually discovered that the original infrastructure projects were prematurely damaged in some environments. Surveys show that most industrial buildings need to be overhauled after 25-30 years of use, and the service life of buildings in harsh environments is only 15-20 years. The service environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F220/18C08F220/14C08G18/76C08G18/66C08G18/48C08G18/36C08G18/34C04B41/48
CPCC04B41/4857C08F283/008C08G18/348C08G18/36C08G18/4825C08G18/6696C08G18/7671C08F220/14
Inventor 张万国王树栋李庚辰高振国钟兆起王会斌齐向南李石勇马永兴张宪胜任鹏飞王义梁旭微刘媛
Owner 贝正河北工程技术有限公司
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