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Preparation method of stripping boron nitride anticorrosive coating, coating obtained by preparation method and application of coating

A technology of anti-corrosion coatings and boron nitride, applied in anti-corrosion coatings, coatings, etc., can solve problems such as restricting applications, and achieve the effects of increasing anti-corrosion performance, reducing dosage, and extending diffusion paths

Inactive Publication Date: 2015-05-20
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it is worth noting that the size of the glass flakes (generally 2-5 μm in thickness and 100-3000 μm in diameter) limits the application in thin anti-corrosion coatings (Li Rongjun. Heavy anti-corrosion coatings and coatings. Chemical Industry Press .pp51)

Method used

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  • Preparation method of stripping boron nitride anticorrosive coating, coating obtained by preparation method and application of coating
  • Preparation method of stripping boron nitride anticorrosive coating, coating obtained by preparation method and application of coating
  • Preparation method of stripping boron nitride anticorrosive coating, coating obtained by preparation method and application of coating

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Embodiment 1

[0044] Preparation of exfoliated boron nitride: Add 1 g of hexagonal boron nitride to 80 mL of isopropanol, ultrasonicate for 24 hours to form an exfoliated boron nitride dispersion with a concentration of 12.5 mg / mL, and then centrifuge the dispersion at 10,000 rpm for 20 min , after washing with distilled water for 3 times, freeze-dry the obtained solid (freezing temperature is -37°C, vacuum degree is 13Pa) to obtain exfoliated boron nitride.

Embodiment 2

[0046]Preparation of exfoliated boron nitride: Add 1 g of hexagonal boron nitride to 100 mL of N-methylpyrrolidone, ultrasonicate for 48 hours to form an exfoliated boron nitride dispersion with a concentration of 12.5 mg / mL, and then centrifuge the dispersion at 10,000 rpm After 20 minutes, the obtained solid was washed with distilled water for 3 times, and then freeze-dried (freezing temperature was -45° C., vacuum degree was 17 Pa) to obtain exfoliated boron nitride.

Embodiment 3

[0048] Preparation of exfoliated boron nitride: Add 1 g of hexagonal boron nitride to 80 mL of dimethyl sulfoxide, ultrasonicate for 48 hours to form an exfoliated boron nitride dispersion with a concentration of 12.5 mg / mL, and then centrifuge the dispersion at 9000 rpm After 20 minutes, the obtained solid was washed with distilled water for 3 times, and then freeze-dried (freezing temperature was -20° C., vacuum degree was 10 Pa) to obtain exfoliated boron nitride.

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Abstract

The invention discloses a preparation method of a stripping boron nitride anticorrosive coating. The preparation method specifically comprises the following steps: 1, performing ultrasonic stripping on hexagonal boron nitride in a solvent, washing, and performing freeze-drying to prepare stripping boron nitride; 2, removing stains, iron rusts and other impurities from the surface of a base material; 3, mixing the stripping boron nitride with an organic coating by virtue of ultrasonic or mechanical stirring to prepare the stripping boron nitride anticorrosive coating; and 4, coating the stripping boron nitride anticorrosive coating to the surface of a metal matrix to obtain a stripping boron nitride anticorrosive coating layer. The preparation method disclosed by the invention can be used for effectively solving the problems in the prior art and preparing an ultrathin anticorrosive coating layer which is superior in corrosion resistance.

Description

technical field [0001] The invention relates to a preparation method of an anti-corrosion paint, the obtained paint and the application of the paint, belonging to the technical field of metal anti-corrosion. Background technique [0002] Metal corrosion is a spontaneous process, which has always brought serious losses and catastrophic accidents to human production and life. According to statistics, developed countries will consume about 10-20% of metals due to corrosion every year, and the resulting economic losses account for about 2-4% of the gross national economic output. So far, many measures have been taken to reduce the loss of corrosion, and it is generally believed that organic coating is the most effective, economical and widely used anti-corrosion measure. It has the following advantages: First, it has many types to choose from, and it can be used in a wide range of fields. Coating on the metal surface can separate the metal from the corrosive medium and reduce t...

Claims

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Application Information

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IPC IPC(8): C09D5/08
CPCC08K3/38C08K2003/385C09D5/08C09D7/61
Inventor 刘贵昌孙文王立达武婷婷杨政清董安喜谢洪斌
Owner DALIAN UNIV OF TECH
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