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Environmental stain-resistant emulsion paint for exterior walls

A latex paint and stain-resistant technology, applied in the field of exterior wall latex paint, can solve the problems of low volume solid content, poor water and weather resistance, weak adhesion, etc., and achieve the effect of good surface tension, low surface energy and fine texture

Inactive Publication Date: 2017-11-24
苏州振振好新型建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] After the construction of latex paint is completed and the volatile matter is volatilized, the paint film remaining on the surface of the building is the effective component to protect the wall, which is usually measured by volume solid content; most of the exterior wall latex paints on the market currently have volume solid content measurement Low, weak adhesion, poor water and weather resistance, prone to peeling, cracking, discoloration, powder removal and other problems when exposed to the air for a long time; it also contains formaldehyde or benzene solvents and other components that pollute the environment

Method used

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  • Environmental stain-resistant emulsion paint for exterior walls
  • Environmental stain-resistant emulsion paint for exterior walls

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of the silicone-modified acrylate emulsion is to add ammonium persulfate into an initiator tank equipped with deionized water, and stir evenly to obtain an initiator solution with a concentration of 2%; methyl acrylate, ethyl acrylate Ester, glycidyl methacrylate, octamethylcyclotetrasiloxane (D4) were mixed uniformly in the premixing tank to obtain a mixed phase of polymerized monomers; sodium dodecyl allyl succinate and deionized water were added Into the four-neck flask, heated to 60°C, slowly dropwise mixed homogeneous polymerized monomer mixed phase and 80% initiator solution for 1 hour, during the reaction process, the temperature was maintained at 60°C, and the rotation speed was maintained at 200r / min; After dropping and keeping warm for 1 hour, the temperature is 60°C, then add the remaining 20% ​​initiator solution dropwise, and when the system is cooled to 40°C, add sodium bicarbonate to adjust the pH value to 6.

[0029] The titanium d...

Embodiment 2

[0038] The preparation method of the silicone-modified acrylate emulsion is to add ammonium persulfate into an initiator tank equipped with deionized water, stir evenly to obtain an initiator solution with a concentration of 3%; mix methyl acrylate, ethyl acrylate Ester, glycidyl methacrylate, octamethylcyclotetrasiloxane (D4) were mixed uniformly in the premixing tank to obtain a mixed phase of polymerized monomers; sodium dodecyl allyl succinate and deionized water were added Into a four-neck flask, heated to 80°C, slowly dropwise mixed homogeneous polymerized monomer mixed phase and 80% initiator solution for 2 hours, during the reaction process, the temperature was maintained at 80°C, and the rotation speed was maintained at 300r / min; After dropping and keeping warm for 2 hours, the temperature is 80°C, then add the remaining 20% ​​initiator solution dropwise, and when the system is cooled to 40°C, add sodium bicarbonate to adjust the pH value to 8.

[0039] The titanium d...

Embodiment 3

[0048] The preparation method of the silicone-modified acrylate emulsion is to add ammonium persulfate into an initiator tank equipped with deionized water, stir evenly to obtain an initiator solution with a concentration of 2.5%; mix methyl acrylate, ethyl acrylate Ester, glycidyl methacrylate, octamethylcyclotetrasiloxane (D4) were mixed uniformly in the premixing tank to obtain a mixed phase of polymerized monomers; sodium dodecyl allyl succinate and deionized water were added Into the four-necked flask, heated to 70°C, slowly added dropwise the homogeneously mixed polymerized monomer mixed phase and 80% initiator solution for 1.5 hours, the temperature during the reaction was maintained at 70°C, and the rotation speed was maintained at 250r / min After dropping and keeping warm for 1.5h, the temperature is 70°C, then dropwise add the remaining 20% ​​initiator solution, and when the system is cooled to 40°C, add sodium bicarbonate to adjust the pH value to 6-8.

[0049] The t...

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Abstract

The invention relates to environmental stain-resistant emulsion paint for exterior walls. With an organosilicon modified acrylate emulsion as a main raw material, the emulsion paint has flexibility, good high and low temperature resistance, low surface energy and excellent water resistance and weatherability. By embedding a non-ionic emulsifier into an ionic emulsifier, the distance between ionic bonds of a reactive emulsifier on the surface of emulsion particles can be widened. With electrostatic screening effect of the non-ionic emulsifier, electrostatic tension of the emulsion particle surface is increased, distribution of the reactive emulsifier on the emulsion particles is increased, and then the emulsion paint has higher stability and good surface tension. By the use of shell powder, the problem that overflowing shells pollute the marine environment can be solved, the emulsion paint can be endowed with fine texture, the paint film is enriched, the emulsion paint is not easy to precipitate and has good brushing property, and porousness is also beneficial to adsorption of harmful substances such as formaldehyde, metal ions, etc. in the air. By using deionized water as a solvent, the emulsion paint is safe and environmentally friendly, solid content in volume is high, thickness of the paint film can be increased, VOC is low, adhesion is strong, and water resistance is excellent.

Description

technical field [0001] The invention relates to the technical field of exterior wall latex paint, in particular to an environment-friendly and pollution-resistant exterior wall latex paint. Background technique [0002] Emulsion paint for exterior walls is a kind of coating with polymer emulsion as film-forming substance, and a kind of water-based coating formulated with synthetic resin emulsion as raw material, adding pigments, fillers and various additives. The main function of the exterior wall emulsion paint is to decorate and protect the building surface, so that the appearance of the building is neat and beautiful, so as to achieve the purpose of beautifying the urban environment, and at the same time, it can protect the exterior wall of the building and prolong its service life. [0003] After the construction of latex paint is completed and the volatiles are volatilized, the paint film remaining on the surface of the building is the effective component to protect the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D4/06C09D5/02C09D5/16C09D7/12
CPCC09D4/06C09D5/022C09D5/024C09D5/1668C09D5/1687
Inventor 沈远振邢洪瑞龚雪良
Owner 苏州振振好新型建材科技有限公司
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