Super-hydrophobic and anti-icing transparent coating and preparation method thereof

A transparent coating and super-hydrophobic technology, applied in coatings and other directions, can solve the problems of high risk, failure to meet the requirements of super-hydrophobic contact angle, complex preparation process of silica gel precursor, etc., and achieve good self-cleaning effect and high practicality. Value, the effect of large hydrophobic angle

Inactive Publication Date: 2017-05-10
LIAONING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Chinese patent CN101143989 discloses a hydrophobic coating composed of organosilane gel precursors, silicone oil and nanoparticles, but the preparation process using the silica gel precursors is complicated and there are relatively high risks
[0006] Jing Mengmeng, a graduate student at the School of Materials Science and Engineering, Nanchang Hangkong University, added hydrophobic nano-silica prepared by modifying 3-aminopropyltriethoxysilane to fluorocarbon varnish to prepare a hydrophobic self-cleaning fluorocarbon coating. The contact angle is 136°, which does not meet the superhydrophobic contact angle requirement, and it needs to be cured at a high temperature of 220°C. If it is applied in large quantities, it will still have certain difficulties

Method used

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  • Super-hydrophobic and anti-icing transparent coating and preparation method thereof
  • Super-hydrophobic and anti-icing transparent coating and preparation method thereof
  • Super-hydrophobic and anti-icing transparent coating and preparation method thereof

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preparation example Construction

[0053] The preparation method of superhydrophobic, anti-icing transparent coating, the steps are as follows:

[0054] 1) Add the silane coupling agent to the organic solvent, mix well and then add deionized water, uniformly disperse the inorganic nanoparticles into the organic solvent containing the silane coupling agent by ultrasonic or mechanical stirring, and disperse for 2~4 hours ; Suction filtration, washing with water, drying at 100°C, and grinding in a mortar to obtain inorganic nanoparticle fillers with superhydrophobic and anti-icing properties;

[0055] The inorganic nanoparticles are: one of hydrophilic nano-silicon dioxide, nano-titanium dioxide, and nano-alumina particles;

[0056]The dosage ratio of the inorganic nanoparticles, silane coupling agent, organic solvent and deionized water is: 5g~6g︰0.9g~4.7g︰36mL~60mL︰3.5mL~4.5mL;

[0057] 2) Add the corresponding quality of fluorosilane to the transparent fluorocarbon varnish, mix evenly at room temperature, and ...

Embodiment 1

[0074] Such as Figure 1~6 Shown:

[0075] (1) Preparation of inorganic nanofillers:

[0076] Nano silica: 5g

[0077] Silane coupling agent (3-aminopropyltriethoxysilane): 1.48g

[0078] Toluene: 50mL

[0079] Deionized water: 3.5mL

[0080] Add the silane coupling agent 3-aminopropyltriethoxysilane to toluene, mix well and add deionized water; obtain a mixed solution; uniformly disperse nano-silica into the mixed solution by mechanical stirring, and disperse for 3.5 h; suction filtration, washing with water, and drying at 100°C; grinding in a mortar to obtain superhydrophobic and anti-icing inorganic nanoparticle fillers.

[0081] (2) The composition ratio of the coating composition is (mass percentage):

[0082] Fluorocarbon varnish: 30.71g

[0083] Per(thirteen)fluorooctyltriethoxysilane: 0.31g

[0084] Superhydrophobic nano silica: 4.91g

[0085] Thinner: 6.14g

[0086] Weigh the above composition according to the proportion, stir it for 90 minutes, make it full...

Embodiment 2

[0088] (1) Preparation of inorganic nanofillers:

[0089] Nano silica: 5g

[0090] Silane coupling agent (γ-(methacryloyloxy)propyltrimethoxysilane): 4.7g

[0091] Isopropanol: 36mL

[0092] Deionized water: 4.5mL

[0093] Add the silane coupling agent γ-(methacryloyloxy)propyltrimethoxysilane to isopropanol, mix well, add deionized water, and magnetically stir for 1 hour to obtain a mixed solution; The silicon oxide is evenly dispersed in the mixed solution, and dispersed for 4 hours; suction filtered, washed with water, and dried at 100°C; ground in a mortar, and superhydrophobic, anti-icing inorganic nanoparticle fillers are obtained.

[0094] (2) The composition ratio of the coating composition is (mass percentage):

[0095] Fluorocarbon varnish: 30.71g

[0096] Heptadecafluorodecyltrimethoxysilane: 0.31g

[0097] Hydrophobic nano silica: 4.91g

[0098] Thinner: 6.14g

[0099] Weigh the above composition according to the proportion, stir it for 90 minutes, make it ...

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Abstract

The invention discloses a super-hydrophobic and anti-icing transparent coating. The super-hydrophobic and anti-icing transparent coating is prepared by mixing super-hydrophobic inorganic nanoparticles, fluoroalkyl silane, fluorocarbon varnish, curing agents and organic diluents. A preparation method of the super-hydrophobic and anti-icing transparent coating comprises the following steps: adding a silane coupling agent into an organic solvent, uniformly mixing and then adding deionized water, uniformly dispersing the inorganic nanoparticles into the organic solvent containing the silane coupling agent through ultrasonic wave or a mechanical stirring method and dispersing for 2-4 hours; carrying out suction filtration, washing, drying, grinding via a mortar to obtain super-hydrophobic and anti-icing inorganic nanoparticle fillers; adding transparent fluorocarbon varnish into corresponding mass of fluoroalkyl silane, uniformly mixing at normal temperature, then uniformly dispersing the prepared super-hydrophobic and anti-icing inorganic nanoparticle fillers into the commercial fluorocarbon varnish by mechanically stirring, finally uniformly mixing the composition with the curing agents and the diluents, wherein the curing agents account for 0-10% of the total mass, and the diluents account for 8-18% of the total mass; and preparing the super-hydrophobic and anti-icing transparent coating. The coating has the advantages of strong binding force, super-hydrophobic property, anti-icing property and self-cleaning property.

Description

technical field [0001] The invention relates to a coating, in particular to a super-hydrophobic, anti-icing transparent coating and a preparation method thereof. Background technique [0002] Superhydrophobic coatings have attracted people's attention in recent years because of their excellent waterproof, antifouling, self-cleaning, anti-corrosion, and drag-reducing properties. There are many methods for preparing superhydrophobic coatings, such as sol-gel method, chemical vapor deposition method, electrospinning method, plasma method, etching method and so on. Most of them build rough surfaces on the basis of low surface energy materials to form super-hydrophobic coatings, but the coating has weak binding force and is easy to detach from the substrate, thus losing its effect. Some of the paints and their preparation methods in the prior art are expensive, and some have high equipment requirements, harsh conditions, long production cycle and can only be prepared in laborato...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/12C09D7/12
CPCC09D127/12C08K3/22C08K3/36C08K5/54C08K5/5419C08K9/06C08K2003/2227C08K2003/2241C08K2201/011C09D7/63C09D7/65
Inventor 王凤平刘丹朱梦思张航刘照斌丁言伟
Owner LIAONING NORMAL UNIVERSITY
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