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A kind of gel barrier type self-cleaning dust-proof topcoat composition and preparation method and application

A composition and gel technology, applied in the direction of coating, can solve problems such as foaming and peeling, and achieve the effects of excellent coating film strength, poor sealing, and simple preparation process

Active Publication Date: 2022-01-07
CARPOLY CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composition solves the problem of foaming and shedding of the hydrophilic stain-resistant coating film due to high water permeability, and largely broadens the application range of the above-mentioned hydrophobic capsules

Method used

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  • A kind of gel barrier type self-cleaning dust-proof topcoat composition and preparation method and application
  • A kind of gel barrier type self-cleaning dust-proof topcoat composition and preparation method and application
  • A kind of gel barrier type self-cleaning dust-proof topcoat composition and preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A gel barrier type self-cleaning dustproof topcoat composition, which includes the following components in parts by mass:

[0035]

[0036] In the preparation method of gel barrier emulsion, it includes the following raw materials in parts by mass:

[0037]

[0038] The preparation method of above-mentioned gel barrier emulsion is as follows:

[0039] At room temperature, according to the above mass fractions, place all the acrylate emulsions in the tooth disc disperser to disperse, control the speed at 600rpm, then add wetting agent, disperse for 5min; then adjust the speed to 1800rpm, add hydrophobic gel dropwise Body (a mixture of hydroxyl-terminated polydimethylsiloxane and silane oligomers), the dropwise addition time is 10 minutes, stir at this speed for 10 minutes, then reduce the speed to 200 rpm, add a pH regulator, and disperse for 5 minutes. A gel barrier emulsion is obtained.

[0040] The preparation method of the above-mentioned gel barrier type sel...

Embodiment 2

[0043] A gel barrier type self-cleaning dustproof topcoat composition, which includes the following components in parts by mass:

[0044]

[0045] In the preparation method of the gel barrier emulsion, the following raw materials are included in parts by mass:

[0046]

[0047] The preparation method of above-mentioned gel barrier emulsion is as follows:

[0048] At room temperature, according to the above mass fractions, put all the acrylate emulsion in the tooth disc disperser to disperse, control the speed at 800rpm, then add wetting agent, disperse for 10min; then adjust the speed to 2500rpm, add hydrophobic gel dropwise Body (a mixture of hydroxyl-terminated polydimethylsiloxane and silane oligomers), the dropwise addition time is 15 minutes, stir at this speed for 20 minutes, then reduce the speed to 300 rpm, add a pH regulator, and disperse for 10 minutes. A gel barrier emulsion is obtained.

[0049] The preparation method of the above-mentioned gel barrier type...

Embodiment 3

[0052] A gel barrier type self-cleaning dustproof topcoat composition, which includes the following components in parts by mass:

[0053]

[0054] In the preparation method of the gel barrier emulsion, the following raw materials are included in parts by mass:

[0055]

[0056] The preparation method of above-mentioned gel barrier emulsion is as follows:

[0057] At room temperature, according to the above mass fractions, put all the acrylate emulsion in the tooth disc disperser to disperse, control the speed at 800rpm, then add wetting agent, disperse for 10min; then adjust the speed to 2000rpm, add hydrophobic gel dropwise Body (a mixture of hydroxyl-terminated polydimethylsiloxane and silane oligomers), the dropwise addition time is 15 minutes, stir at this speed for 20 minutes, then reduce the speed to 300 rpm, add a pH regulator, and disperse for 10 minutes. A gel barrier emulsion is obtained.

[0058] The preparation method of the above-mentioned gel barrier type...

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Abstract

The invention relates to a gel barrier type self-cleaning dustproof topcoat composition, comprising a gel barrier emulsion and a silica sol; wherein the gel barrier emulsion has a core-shell structure, and the core-shell structure includes a core layer and a shell layer The core layer includes acrylate emulsion particles; the shell layer includes a hydrophobic gel layer; the hydrophobic gel layer includes a mixture of polymethylsilane and silane oligomers. The present invention also relates to a preparation method of the above-mentioned gel-barrier self-cleaning and dust-proof topcoat composition and its application in exterior wall coatings. The invention effectively solves the problem of high water permeability of the hydrophilic coating, the stain resistance value can be as low as 5-8, and the water permeability can be controlled at 0.2-0.5ml.

Description

technical field [0001] The invention relates to the field of dustproof topcoats, in particular to a gel-barrier type self-cleaning dustproof topcoat composition, a preparation method and an application thereof. Background technique [0002] The overlay material can effectively enhance the waterproof, stain resistance and ultraviolet radiation resistance of real stone paint and imitation stone paint coating, and greatly improve the service life of decorative wall paint, which is indispensable in practical applications. Compared with hydrophobic products, hydrophilic topcoats can quickly remove the adhesion of particulate pollutants because they are easily wetted by rainwater, and are more suitable for anti-contamination applications in outdoor building exterior wall projects. Patents CN105001728A and CN106752593A respectively disclose an organic / inorganic composite finish varnish and its preparation process. This type of method uses silicate material and acrylic polymer emuls...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D183/04C09D7/65
CPCC09D133/04C09D7/65C08L83/04
Inventor 张浩杨帅汪金陈玉泉谭振华
Owner CARPOLY CHEM GRP
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