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A preparation method of practically applicable high-strength superhydrophobic protective coating

A practical application and protective coating technology, applied in coatings, epoxy resin coatings, etc., can solve the problems of high production cost, short service life, and weak mechanical strength of superhydrophobic coating surfaces, and achieve long service life and mechanical strength. Strong, low-cost results

Active Publication Date: 2018-06-26
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing superhydrophobic coatings with high strength and respective protective functions on various solid substrates, so as to solve the problems of high production cost, weak mechanical strength, short service life and narrow application range of superhydrophobic coating surfaces. And other issues

Method used

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  • A preparation method of practically applicable high-strength superhydrophobic protective coating
  • A preparation method of practically applicable high-strength superhydrophobic protective coating
  • A preparation method of practically applicable high-strength superhydrophobic protective coating

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Experimental program
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Effect test

Embodiment 1

[0028] (1) Preparation of micronano magnesium hydroxide powder: 2.5 g MgCl 2 ·6H 2 O and 0.02 g C 19 h 42 BrN was dissolved in 25 ml of ethanol at 70 °C to form solution A. Heat 10 ml of aqueous ammonia to 70 °C as solution B. Under the condition of stirring at 70 °C, solution A was added dropwise to solution B. After reacting for 90 minutes, the system was aged at room temperature for 5 hours. Finally, the micronano magnesium hydroxide powder can be obtained after suction filtration and washing. Such as figure 1 As shown in the SEM photo of (a), the obtained magnesium hydroxide powder is in the form of nano-sheet aggregates, and its particle size is about 1-2 μm. according to figure 1 (b) It can be seen that the thickness of the nanosheets is about 50 nm.

[0029] (2) Preparation of superhydrophobic micro-nano magnesium hydroxide powder: the micro-nano magnesium hydroxide powder obtained in step A is added to 2 M hydrophobizing modifier ethanol solution, after stirri...

Embodiment 2

[0033] (1) Preparation of micronano magnesium hydroxide powder: 2.5 g MgCl 2 ·6H 2 O and 0.02 g C 19 h 42 BrN was dissolved in 25 ml of ethanol at 70 °C to form solution A. Heat 10 ml of aqueous ammonia to 70 °C as solution B. Under the condition of stirring at 70 °C, solution A was added dropwise to solution B. After reacting for 90 minutes, the system was aged at room temperature for 5 hours. Finally, the micronano magnesium hydroxide powder can be obtained after suction filtration and washing.

[0034] (2) Preparation of superhydrophobic micro-nano magnesium hydroxide powder: the micro-nano magnesium hydroxide powder obtained in step A is added to the hydrophobizing modifier ethanol solution of 5 M, after stirring at 60 ° C for 30 minutes The superhydrophobic micronano magnesium hydroxide powder can be obtained by suction filtration and washing. It was dried at 60 °C for later use.

[0035] (3) Preparation of superhydrophobic epoxy resin@magnesium hydroxide coating:...

Embodiment 3

[0038] (1) Preparation of micronano magnesium hydroxide powder: 2.5 g MgCl 2 ·6H 2 O and 0.02 g C 19 h 42 BrN was dissolved in 25 ml of ethanol at 70°C to form solution A. Heat 10 ml of aqueous ammonia to 70 °C as solution B. Under the condition of stirring at 70 °C, solution A was added dropwise to solution B. After reacting for 90 minutes, the system was aged at room temperature for 5 hours. Finally, the micronano magnesium hydroxide powder can be obtained after suction filtration and washing.

[0039] (2) Preparation of superhydrophobic micro-nano magnesium hydroxide powder: the micro-nano magnesium hydroxide powder obtained in step A is added to 3 M hydrophobizing modifier ethanol solution, after stirring at 60 ° C for 30 minutes The superhydrophobic micronano magnesium hydroxide powder can be obtained by suction filtration and washing. It was dried at 60 °C for later use.

[0040] (3) Preparation of superhydrophobic epoxy resin@magnesium hydroxide coating: Mix epo...

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Abstract

The invention belongs to the technical field of superhydrophobic paint preparation, particularly a preparation method of a high-strength superhydrophobic protective coating capable of practical application. The method comprises the following steps: preparing micro / nano magnesium hydroxide powder, preparing superhydrophobic micro / nano magnesium hydroxide powder, preparing the superhydrophobic epoxy resin@magnesium hydroxide coating, and the like. Various substrates painted by the epoxy resin@magnesium hydroxide coating have favorable hydrophobicity. Furthermore, the superhydrophobic epoxy resin@magnesium hydroxide coating has superhigh mechanical stability and favorable chemical durability, can be hardly damaged by either acid / alkali liquor or high temperature. The superhydrophobic epoxy resin@magnesium hydroxide-stearic acid coating has various protective properties, and thus, is applicable to various complex and extreme operating environments. The method has the advantages of simple preparation technique, accessible raw materials, no toxicity, environment friendliness, low cost and high stability, is suitable for large-area preparation, and is applicable to the fields of construction, transportation, military affairs and the like in extremely severe working environments.

Description

technical field [0001] The invention belongs to the technical field of preparation of superhydrophobic coatings, in particular to a method for preparing high-strength superhydrophobic coatings with various protective functions on various solid substrates. Background technique [0002] Inspired by the lotus leaf surface, butterfly wings, and water strider legs in nature, the phenomenon of superhydrophobicity has gradually attracted people's attention. Super-hydrophobic surface generally refers to the surface of the material has excellent waterproof ability, its contact angle to water is greater than 150°, and the rolling angle is less than 10°. In addition, the superhydrophobic surface has many unique and excellent surface properties: self-cleaning, anti-corrosion, anti-icing, anti-fog and other characteristics, making it have great application prospects in many fields. [0003] Superhydrophobic coating refers to a superhydrophobic additional layer that can act on various so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D7/61C09D7/63
CPCC08K3/22C08K9/04C08K2003/2224C09D7/62C09D163/00
Inventor 郭志光司一帆
Owner HUBEI UNIV