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Preparation method of anti-fouling waterproof coating adopting modified acrylic acid

A waterproof coating, acrylic technology, applied in the field of coatings, can solve the problems of large surface roughness, difficult cleaning work, difficult to clean, etc., achieve good dispersion effect, simple method, and improved weather resistance

Inactive Publication Date: 2015-05-13
扬州豪扬新型建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, the surface roughness of traditional coatings is large, easy to be stained with dust, and difficult to clean, especially the inner and outer walls of high walls, which are difficult to clean. Therefore, anti-fouling and waterproof coatings are more and more popular.

Method used

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  • Preparation method of anti-fouling waterproof coating adopting modified acrylic acid

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The concrete preparation steps of antifouling and waterproof coating in the present embodiment are:

[0028] 1) Preparation of modified acrylate

[0029] Put 55g of methyl acrylate in a dry reaction kettle, raise the temperature to 110-120°C, and treat it at a vacuum degree of -0.1Mpa for 0.5-1h until no bubbles are generated, then cool down to 75°C, and add 1.2g of alkylphenol polyoxygen Vinyl ether, 0.8g sodium lauryl sulfate, and 1.5g sodium bicarbonate, stirred, kept the temperature at 75-80°C for 0.5h, then added dropwise 23g trifluoroethyl acrylate and 15g mass fraction of 5% Sodium persulfate solution, both are continuously added dropwise, the dropwise addition time is 1.5~2h, after the dropwise addition, the stirring reaction is accelerated for 1h, then cooled to room temperature, and filtered with a 100-mesh sieve to obtain a modified acrylate emulsion;

[0030] 2) Preparation of modified emulsion with uniform dispersion of nano powder

[0031] a, 5g nano-sil...

Embodiment 2

[0037] The concrete preparation steps of antifouling and waterproof coating in the present embodiment are:

[0038] 1) Preparation of modified acrylate

[0039] Put 60g of 2-ethyl methacrylate in a dry reaction kettle, raise the temperature to 110-120°C, and treat it at a vacuum degree of -0.1Mpa for 0.5-1h until no bubbles are generated, then cool down to 75°C, and add 2g of alkylphenol Polyoxyethylene ether, 0.8g sodium lauryl sulfate, and 1g sodium bicarbonate, stirred, kept the temperature at 75-80°C for 0.5h, then added dropwise 15g trifluoroethyl methacrylate and 10g mass fraction at the same time 5% sodium persulfate solution, both of which are continuously added dropwise, the dropping time is 1.5~2h, after the dropwise addition, the stirring reaction is accelerated for 1h, then the temperature is lowered to room temperature, and the modified acrylate is obtained by filtering with a 100-mesh sieve Lotion;

[0040] 2) Preparation of modified emulsion with uniform dispe...

Embodiment 3

[0047] The concrete preparation steps of antifouling and waterproof coating in the present embodiment are:

[0048] 1) Preparation of modified acrylate

[0049] Put 50g of methyl methacrylate in a dry reaction kettle, raise the temperature to 110-120°C, and treat it at a vacuum degree of -0.1Mpa for 0.5-1h until no bubbles are generated, then cool down to 75°C, and add 0.8g of alkylphenol Polyoxyethylene ether, 1g sodium lauryl sulfate, and 1.7g sodium bicarbonate, stirred, kept the temperature at 75-80°C for 0.5h, then added dropwise 30g trifluoroethyl methacrylate and 12g mass fraction at the same time 5% sodium persulfate solution, both of which are continuously added dropwise, the dropping time is 1.5~2h, after the dropwise addition, the stirring reaction is accelerated for 1h, then the temperature is lowered to room temperature, and the modified acrylate is obtained by filtering with a 100-mesh sieve Lotion;

[0050] 2) Preparation of modified emulsion with uniform disp...

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Abstract

The invention discloses a preparation method of an anti-fouling waterproof coating adopting modified acrylic acid. Raw materials comprise acrylate monomer, fluororesin monomer, nano-silver, nano-TiO2, nano Na-montmorillonite, nano sepiolite powder, a cationic surface active agent, an anionic surface active agent, rosin water, closed cell perlite, heavy calcium carbonate powder, ceramic microspheres, attapulgite, calcium naphthenate, cobalt trifluoroacetylacetone, a dispersing agent, a coalescent agent, a defoaming agent and deionized water. The preparation method comprises steps as follows: appropriate fluororesin monomer is used for modifying acrylate resin; functional nanoparticles are uniformly dispersed in a modified emulsion; the anti-fouling waterproof coating is prepared. According to the coating, a fluororesin modified acrylate emulsion is used, meanwhile, the cationic surface active agent and the anionic surface active agent are uniformly dispersed in the coating and are not agglomerated after a long time, and the obtained coating has good impervious, watertight and antifouling properties and good weather fastness, and is green and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a preparation method of a modified acrylic antifouling and waterproof coating. Background technique [0002] Acrylate emulsion has good aging resistance, light resistance, weather resistance, corrosion resistance, low price, strong adhesion, simple synthesis process, etc., but it also has poor water resistance, easy to become brittle at low temperature, and easy to change at high temperature. The shortcomings such as viscous loss and strength affect its use effect, so it is necessary to modify it. The fluorine-containing resin emulsion can form a film at room temperature, and the surface energy of the latex film is low. Therefore, modifying acrylates with fluorine-containing resins, introducing fluorine-containing groups into the emulsion side chains to change the structure of acrylate polymers, can greatly improve its comprehensive performance indicators, especiall...

Claims

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Application Information

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IPC IPC(8): C09D133/12C09D133/10C09D133/08C09D5/14C09D7/12C08F220/14C08F220/22C08F220/18C08F2/26C08F2/30
Inventor 曹茂盛
Owner 扬州豪扬新型建筑材料有限公司
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