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Building coating with self-cleaning function and preparation method thereof

An architectural coating and self-cleaning technology, used in antifouling/underwater coatings, coatings, and biocide-containing paints. , the effect of stable performance

Inactive Publication Date: 2020-07-24
杭州传化唯迅新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult for this traditional superhydrophobic coating to have both oleophobic and superoleophobic properties at the same time, and it generally adheres to oil stains.
Once the surface of the superhydrophobic coating is covered with oil, it cannot exert the self-cleaning ability based on superhydrophobicity.

Method used

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  • Building coating with self-cleaning function and preparation method thereof
  • Building coating with self-cleaning function and preparation method thereof

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preparation example Construction

[0021] The preparation method of the building coating with self-cleaning function provided by the invention comprises:

[0022] S1. Mix the film-forming substance, filler, coupling agent and solvent to obtain the first mixture, wherein the filler includes hydrophobic white carbon black particles and micron-sized silica particles, and the film-forming substance is a hydrophobic resin, And the molecular chain of the resin contains hydroxyl groups.

[0023] Specifically, based on 1 part of the film-forming substance, the amount of the filler is 0.2-1.2 parts, the amount of the coupling agent is 0.01-0.02 parts, and the amount of the solvent is 20-30 parts.

[0024] Among them, the mass ratio of silica particles to silica particles is 10:1-1:1, preferably 6:1-1:1, and at the same time, considering that the particle size of fumed silica particles can reach 10nm- 20nm, the silica particles can be preferably fumed silica particles, so that the silica particles can be better and more...

Embodiment 1

[0042] Mix 0.1g of hydrophobic white carbon black, 0.6g of micron-sized silicon dioxide, 0.02g of KH550, 1g of 58% fluorine resin F100 and 20g of solvent, wherein the mass ratio of the solvent is 7:2:1 A mixture of xylene, butyl acetate and MIBK. First use the INVT stepless frequency conversion high-speed agitator to stir. When stirring, place the reaction tank under the impeller of the agitator, and adjust the height of the impeller up and down. It is advisable for the impeller to be in the middle of the mixture. Fix the reaction tank with left and right fixing clips to prevent displacement. position, and then stirred by a stirrer at a speed of 800r / min for 45min to obtain the first mixture.

[0043] The first mixture was added to the SHR high-speed mixer for the first grinding treatment, and the rotation speed was kept at 1000 r / min for 45 minutes to obtain the second mixture.

[0044] The second mixture is ground by QZM.1 conical grinder. When grinding, the motor speed is tr...

Embodiment 2

[0046] Mix 0.6g of hydrophobic white carbon black, 0.1g of micron-sized silica, 0.01g of KH550, 1g of 58% fluorine resin F100 and 20g of solvent, wherein the mass ratio of the solvent is 7:2:1 A mixture of xylene, butyl acetate and MIBK. First use the INVT stepless frequency conversion high-speed agitator to stir. When stirring, place the reaction tank under the impeller of the agitator, and adjust the height of the impeller up and down. It is advisable for the impeller to be in the middle of the mixture. Fix the reaction tank with left and right fixing clips to prevent displacement. position, and then stirred by a stirrer at a speed of 800r / min for 50min to obtain the first mixture.

[0047] The first mixture was added to the SHR high-speed mixer for the first grinding treatment, and the rotation speed was kept at 1000 r / min for 45 minutes to obtain the second mixture.

[0048] The second mixture is ground by QZM.1 conical grinder. When grinding, the motor speed is transmitt...

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Abstract

The invention relates to a building coating with a self-cleaning function and a preparation method thereof. The preparation method comprises the steps that a film forming matter, filler, a coupling agent and a solvent are mixed to obtain a first mixture, the filler comprises hydrophobic white carbon black particles and micron-sized silicon dioxide particles, the film forming matter is hydrophobicresin, and the molecular chain of the resin contains hydroxyl; first grinding treatment is performed on the first mixture to enable the white carbon black particles to be loaded on the surfaces of thesilicon dioxide particles, and self-assembly is performed to form composite particles with a micro-nano structure, so as to obtain a second mixture; and the second mixture is subjected to second grinding treatment, the building coating with the self-cleaning function is obtained, after the building coating forms a coating, the surface of the coating is of a micro-nano structure, infiltration of water and oil drops can be prevented at the same time, and the self-cleaning capacity is high.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a building coating with self-cleaning function and a preparation method thereof. Background technique [0002] A self-cleaning surface refers to a surface on which pollutants can automatically fall off or be degraded under the action of gravity, rain, wind and other external forces. The self-cleaning surface based on the superhydrophobic principle is mainly based on the superhydrophobic properties of the superhydrophobic coating. The hydrophobic angle is required to be greater than or equal to 110°. However, it is difficult for this traditional superhydrophobic coating to have both oleophobic and superoleophobic properties at the same time, and it generally adheres to oil stains. Once the surface of the superhydrophobic coating is covered with oil, it cannot exert the self-cleaning ability based on superhydrophobicity. Contents of the invention [0003] Based on th...

Claims

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Application Information

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IPC IPC(8): C09D127/12C09D5/16C09D7/62C09D7/61
CPCC09D5/1668C09D5/1687C09D127/12C08K3/36C08K9/12C08K7/26
Inventor 左敏陈亚军陈萍陈凯
Owner 杭州传化唯迅新材料有限公司
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