Preparation method and application of substrate-unlimited super-hydrophobic coating

A super-hydrophobic coating and solution technology, applied in coatings, anti-corrosion coatings, etc., can solve the problems of large-scale industrial preparation, cumbersome process, and high cost, and achieve excellent super-hydrophobicity, reduce surface energy, and high and low temperature resistance sex good effect

Pending Publication Date: 2022-04-05
CENT CHINA BRANCH OF CHINA DATANG CORP SCI & TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fast and large-scale preparation of unlimited substrates with high resistance to the existing methods of preparing superhydrophobic coatings. A method for superior superhydrophobic coatings

Method used

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  • Preparation method and application of substrate-unlimited super-hydrophobic coating
  • Preparation method and application of substrate-unlimited super-hydrophobic coating
  • Preparation method and application of substrate-unlimited super-hydrophobic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In this example, metal copper is used as the substrate, PFA (fusible polytetrafluoroethylene) is used as micro-nano particles, Dow Corning SJ-168 silicone weather-resistant sealant is used as adhesive, n-hexane is used as solvent, and no modifier is added. Prepare superhydrophobic copper surface, the steps are as follows:

[0044] (1) Take 0.5g of Dow Corning SJ-168 silicone weather-resistant sealant in 9.5g of n-hexane, dilute and stir until evenly mixed, and the resulting solution is named solution A;

[0045] (2) Get 2.5g of PFA hydrophobic micro-nano particles and put them into solution A, and mix them evenly to make a super-hydrophobic composite coating solution, which is called solution B;

[0046] (3) Use a spray gun to spray solution B onto the metal copper surface with a pressure of 0.3 MPa and a distance of 5 cm from the substrate. After the surface is dried, a superhydrophobic copper surface is obtained.

Embodiment 2

[0048] In this example, an iron plate is used as a substrate, FEP (perfluoroethylene propylene copolymer) is a micro-nano particle, Dow Corning SJ-168 silicone weather-resistant sealant is used as an adhesive, n-heptane is used as a solvent, and perfluorohexylethyltrimethoxy Silane is used as modifier to prepare superhydrophobic iron surface, and the steps are as follows:

[0049] (1) Take 0.5g of Dow Corning SJ-168 silicone weather-resistant sealant in 9.5g of n-heptane, dilute and stir until mixed evenly, and the resulting solution is named solution A;

[0050] (2) Add 0.1 g of perfluorohexylethyltrimethoxysilane modifier into solution A, and stir to obtain solution B;

[0051] (3) Get 2.5g FEP hydrophobic micro-nano particles and put them into solution B, and mix them evenly to make a super-hydrophobic composite coating solution, which is called solution C;

[0052] (4) Spray the solution C onto the surface of the iron plate with a pressure of 0.5 MPa and a distance of 7 cm ...

Embodiment 3

[0054] In this example, an aluminum plate is used as the substrate, PTFE (polytetrafluoroethylene) is used as micro-nano particles, Dow Corning LDC-737 silicone sealant is used as an adhesive, cyclohexane is used as a solvent, and Shanghai Ziyi ZY-FC327 fluorocarbon surfactant is Modifier prepares superhydrophobic aluminum surface, the steps are as follows:

[0055] (1) Take 0.5g of Dow Corning LDC-737 silicone sealant in 9.5g of cyclohexane, dilute and stir until mixed evenly, and the resulting solution is named solution A;

[0056] (2) Take 0.1g ZY-FC327 fluorocarbon surfactant and add it to solution A, and stir to obtain solution B;

[0057] (3) Get 2.5g PTFE hydrophobic micro-nano particles and put them into solution B, and mix them evenly to make a superhydrophobic composite coating solution, which is called solution C;

[0058] (4) Spray the solution C onto the surface of the aluminum plate with a pressure of 0.3 MPa and a distance of 6 cm from the substrate, and after ...

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Abstract

The invention provides a method for rapidly preparing a super-hydrophobic coating with excellent tolerance on a large scale without limitation of a substrate. Comprising the following steps: uniformly mixing an adhesive in a solvent to obtain a solution A; based on the total mass of the adhesive and the solvent, the ratio of the mass percent of the adhesive to the mass percent of the solvent is (0.05-1): (0.95-0); the adhesive is a silicone adhesive taking organic silicon as a main component; adding micro-nano particles into the solution A, and uniformly mixing to prepare a super-hydrophobic composite coating solution; on the basis of the total mass of the micro-nano particles and the solution A, the ratio of the mass percent of the micro-nano particles to the mass percent of the solution A is (0.2-0.3): (0.7-0.8). The preparation method is easy to operate, does not need expensive instruments, is low in cost, is easy to repair, is not limited by a substrate, can complete the preparation of the super-hydrophobic coating only by adopting a simple spraying mode, and can realize large-scale rapid application in industry and life.

Description

technical field [0001] The invention relates to a preparation method and application of a superhydrophobic coating not limited to substrates, and belongs to the technical field of material surface treatment. Background technique [0002] Since Neinhuis and Barthlott discovered the hydrophobic properties of lotus leaves in 1997, superhydrophobic materials have become a research hotspot among researchers at home and abroad because of their excellent performance. Superhydrophobic materials refer to materials with a water contact angle greater than 150° and a rolling angle less than 10°. This superhydrophobic ability makes it suitable for a wide range of applications, such as anti-corrosion, anti-fouling, self-cleaning, oil-water separation, and drag reduction. Many methods and technologies have been developed to prepare superhydrophobic surfaces, such as photolithography, electrospinning, electrochemical methods, sol-gel methods, etc. [0003] Jiang et al. used electrospinning...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D127/18C09D123/12C09D123/06C09D5/08C09D7/65C09D7/63C09D7/20
Inventor 王可可孙勇王浩赵博李嘉晨牛晓东张慧茹
Owner CENT CHINA BRANCH OF CHINA DATANG CORP SCI & TECH RES INST CO LTD
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