Concrete primer, preparation method of concrete primer and concrete structure body

A concrete and primer technology, applied in coatings, anti-corrosion coatings, etc., can solve the problems of concrete decorative coating peeling off, poor water resistance and air permeability, and alkali-resistant primer peeling off, and achieve strong salt-alkali dialysis resistance and hydrolysis resistance Excellent performance and good adhesion

Active Publication Date: 2018-08-10
XINJIANG TUNHE PAINTING
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] However, the existing concrete anti-alkali primer not only has poor saline-alkali dialysis performance, but also has problems of poor adhesion, alkali resistance, water resistance and air permeability:
[0006] After the anti-alkali primer is applied on the concrete surface, it can prevent the saline-alkali dialysis inside the concrete to the surface, and connect the concrete and the concrete decorative coating. The adhesion between the anti-alkali primer and the concrete is insufficient, which will easily lead to the The peeling of the paint, resulting in the effectiveness of the anti-alkali primer and the peeling of the concrete decorative paint

Method used

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  • Concrete primer, preparation method of concrete primer and concrete structure body
  • Concrete primer, preparation method of concrete primer and concrete structure body
  • Concrete primer, preparation method of concrete primer and concrete structure body

Examples

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preparation example Construction

[0112] According to a second aspect of the present invention, a kind of preparation method of above-mentioned concrete primer is provided, comprising the following steps:

[0113] mixing and grinding water, cellulose (B), filler (C) and additive (D), adding film-forming substance (A), and mixing to obtain a concrete primer;

[0114] The film-forming substance (A) is a styrene-acrylate copolymer emulsion (A1) with an emulsion particle size distribution below 0.06 μm, a styrene-acrylate copolymer emulsion (A2) with an emulsion particle size distribution of 0.4-1 μm, optional It is obtained by mixing the styrene-acrylate copolymer emulsion (A3) whose particle size distribution is 0.08-0.2 μm, and the self-crosslinking acrylic emulsion (A4) whose particle size distribution is below 0.06 μm.

[0115] The method is simple and easy to operate and control, has low energy consumption and low cost, and is very suitable for industrial production.

[0116] Preferably, the preparation met...

Embodiment 1-6

[0125] The composition of raw materials of Examples 1-6 is shown in Table 1.

[0126] The specific components are as follows:

[0127] (A) Film-forming substances

[0128] A1 Styrene-acrylate copolymer emulsion: the particle size distribution of the emulsion is 0.04-0.06μm;

[0129] A2 Styrene-acrylate copolymer emulsion: the particle size distribution of the emulsion is 0.4-1μm;

[0130] A3 Styrene-acrylate copolymer emulsion: the particle size distribution of the emulsion is 0.08-0.2μm;

[0131] A4 self-crosslinking acrylic emulsion: emulsion particle size distribution 0.04-0.06μm;

[0132] (B) Cellulose

[0133] B1 Hydroxycellulose;

[0134] (C) filler

[0135] C1 heavy calcium: particle size distribution 40-60μm;

[0136] C2 kaolin: the particle size distribution is less than 160 μm, and the content rate of particles with a particle size less than 10 μm is 20-30%;

[0137] (D) Auxiliary

[0138] D1pH regulator: 2-amino-2-methyl-propanol;

[0139] D2 dispersant: s...

Embodiment 7

[0155] The difference between this example and Example 1 is that a self-made self-crosslinking acrylic emulsion is used, and the preparation method is as follows:

[0156] (1) the butyl acrylate of 15 weight parts, the acrylamide of 2 weight parts, the sodium dodecylbenzene sulfonate of 2 weight parts and the water of 60 weight parts are mixed under ice bath, form pre-emulsion; The emulsion was warmed up to 50°C, and then 15 parts by weight of butyl acrylate, 2 parts by weight of acrylamide, 1 part by weight of sodium dodecylbenzenesulfonate, and 1 part by weight of supernatant were added dropwise to the pre-emulsion within 3 hours. Potassium sulfate, after the dropwise addition is completed, the temperature is raised to 80 ° C, and the temperature is kept for 4 hours to form emulsion I;

[0157] (2) Emulsion II obtained by mixing 2 parts by weight of methyl methacrylate, 1 part by weight of alkylphenol polyoxyethylene ether phosphate and 25 parts by weight of water in an ice ...

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Abstract

The invention discloses concrete primer, a preparation method of the concrete primer and a concrete structure body, and relates to the technical field of concrete paint. The concrete primer is prepared from membrane forming substances (A), cellulose (B), fillers (C) and auxiliary agents (D), wherein the membrane forming substances (A) are prepared from styrene-acrylate copolymer emulsion (A1) withthe particle diameter distributed 0.06mu m or less, styrene-acrylate copolymer emulsion (A2) with the particle diameter distributed between 0.4 and 1 mu m, optional styrene-acrylate copolymer emulsion (A3) with the particle diameter distributed between 0.08 and 0.2 mu m and self-crossing acrylic emulsion (A4) with the particle diameter distributed 0.06 mu m or less, wherein the weight ratio of A1to A2 to A4 is (1 to 2):(1 to 3):1. The primer has good salt and alkali dialysis resistant performance, adhesive force, alkali resistance, water resistance and air permeability; the problems of gradual corrosion, pulverization and the like on concrete due to salt lixiviation and alkali lixiviation at the surface of a concrete building are relieved.

Description

technical field [0001] The invention relates to the technical field of concrete coatings, in particular to a concrete primer, a preparation method thereof and a concrete structure. Background technique [0002] As we all know, the surface of concrete and cement mortar products is prone to produce a white substance, which we call efflorescence. The efflorescent alkali stubbornly remains on the surface of the concrete for a long time, destroying the uniformity of the color of the concrete surface, and causing certain damage to the appearance of decorative concrete products and the surface of concrete buildings with strong visibility. Especially in areas with less precipitation, such as Xinjiang, the hydration and maintenance time of concrete is short, and the saline-alkali content is high after the concrete is cured. The ubiquitous alkaloid problem is serious. [0003] The cause of efflorescence in concrete is mainly related to the structure of the concrete itself. The loose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/14C09D133/04C09D101/28C09D5/08C09D7/61
CPCC08K2003/265C08L2205/025C08L2205/035C09D5/08C09D7/61C09D125/14C09D133/04C08L25/14C08L33/04C08L1/284C08K13/02C08K3/26C08K3/346
Inventor 酒新英满瑞程英袁磊周硕衡赵星
Owner XINJIANG TUNHE PAINTING
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