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A kind of fireproof type superhydrophobic coating and preparation method thereof

A super-hydrophobic coating and flame-resistant technology, applied in the direction of fire-resistant coatings, coatings, etc., can solve the problems of limited scale production of super-hydrophobic coatings, batch transportation in construction environments, hidden safety hazards of super-hydrophobic coatings, and potential safety hazards of super-hydrophobic coatings , to achieve the effects of easy storage and transportation, anti-sedimentation, and atmospheric residence time

Active Publication Date: 2018-09-18
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the currently used superhydrophobic coatings all use flammable organic solvents such as ethanol, isopropanol, petroleum hydrocarbons, acetone, etc. as dispersants or solubilizers, making superhydrophobic coatings in the process of preparation, production, transportation, etc. There are large safety hazards in the process, which greatly limits the large-scale production, construction environment and batch transportation of superhydrophobic coatings.
Secondly, superhydrophobic coating additives often contain some combustible particles, such as carbon nanotubes, organic powder, etc., which will also cause safety hazards in superhydrophobic coatings in practical applications.

Method used

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  • A kind of fireproof type superhydrophobic coating and preparation method thereof
  • A kind of fireproof type superhydrophobic coating and preparation method thereof
  • A kind of fireproof type superhydrophobic coating and preparation method thereof

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preparation example Construction

[0037] The preparation method includes the following steps: adding inorganic micro-nano particles into a hydrofluoroether solvent, ultrasonically dispersing for 10-60 minutes and mechanically stirring at room temperature for 10-60 minutes, then adding alloy powder, additives and pigments according to the proportion, and continuing Stir for 30-60min, and finally add fluorosilane dropwise, and stir at room temperature for 24-72h to obtain a uniformly dispersed flame-resistant super-hydrophobic coating.

[0038] The alloy powder can also be replaced by powders with a size of about 1-20 μm such as polypropylene, polyethylene, silicone, fluororesin, etc., and the concentration is the same as that of the alloy powder.

[0039] When in use, the paint needs to be vigorously stirred for 5-10 minutes, then sprayed or brushed on the surface of the substrate, and finally placed in an oven at 100-200°C for 30-60 minutes to obtain a flame-retardant superhydrophobic coating.

Embodiment 1

[0041] Add 0.1g of titanium dioxide nanoparticles with a particle size of 100-200nm and 0.1g of fly ash particles with a particle size of 1-20μm into 10g of nonafluorobutyl methyl ether solvent, ultrasonically disperse for 10min, then mechanically stir for 60min, then add 0.1g of particles Sn-Pb alloy with a diameter of 1-20 μm, 1 mg of mixing aid (equal parts of dispersant, anti-settling agent and rosin) and 10 mg of rust red, continue to stir for 30 minutes, and finally add 1 mg of fluorosilane to continue stirring / fluorination for 24 hours, and The coating was evenly sprayed on the glass substrate and dried in an oven at 100°C for 30 minutes to obtain a superhydrophobic coating with a water contact angle of 164.2° and a rolling angle of 2.7° ( figure 1 ).

Embodiment 2

[0043]Add 0.5g of fumed silica with a particle size of 10-100nm into 50g of nonafluorobutyl methyl ether solvent, ultrasonically disperse for 30min, then mechanically stir for 30min, then add 1g of Sn-Zn alloy with a particle size of 1-20μm, 10mg of mixing aid agent and 50mg titanium dioxide, continue to stir for 60min, finally add 5mg of fluorosilane, continue mechanical stirring / fluorination for 36h, spray the obtained superhydrophobic coating on metal (copper, aluminum, stainless steel, etc.) The superhydrophobic coating was obtained by drying for 60 min in medium temperature, and its water contact angle was 159.7 °, and the rolling angle was 2.5 ° ( figure 2 ).

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Abstract

The invention discloses a flame-proof super-hydrophobic coating and a preparation method thereof. The flame-proof super-hydrophobic coating is prepared as follows: 1-10 parts of inorganic nano particles, 0.01-1 part of fluoroalkyl silane, 1-10 parts of low-melting-point alloyed powder, 0.01-1 part of an aid and 0.1-2 parts of pigment powder are dispersed in 100-500 parts of hydrofluoroether. The flame-proof super-hydrophobic coating and the preparation method have the advantages that equipment and a process are simple, the operation is easy, the designability and the cost are low and the like, and industrial scale production prospect is realized. The prepared flame-proof super-hydrophobic coating can be applied to various soft and hard substrates, and super-hydrophobic surfaces are obtained. The coating doesn't have an ignition point, causes no environment pollution, facilitates large-scale transportation, has low requirements for the construction environment and is high in security level.

Description

technical field [0001] The invention belongs to the field of paint preparation, in particular to a flame-resistant superhydrophobic paint and a preparation method thereof. Background technique [0002] With the continuous development and utilization of superhydrophobic material technology, in recent years, the following superhydrophobic surface preparation technologies have been developed: wet / reactive ion etching, imprinting, machining, laser ablation, chemical / electrochemical oxidation, chemical / Electrochemical deposition, sol-gel, hydrothermal synthesis, thermal spraying, etc. However, expensive equipment and harsh process conditions make these technologies for preparing superhydrophobic coatings / thin films difficult for large-scale industrial production, and there is a risk of being easily damaged. In order to solve these problems, the technology of uniformly spraying the prepared superhydrophobic coating on the surface of the substrate to form a superhydrophobic coat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/18C09D7/61
CPCC09D1/00C09D5/18C09D7/61C09D7/63C09D7/65
Inventor 张友法戴文哲王山林余新泉
Owner SOUTHEAST UNIV
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