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Preparation method of super-hydrophobic ferric oxide powder coating

An iron oxide powder, super-hydrophobic technology, applied in powder coatings, coatings and other directions, can solve the problems of complex formulation and process, environmental pollution, restricting the large-scale production and application of super-hydrophobic powder coatings, and achieve good industrialization prospects. , low cost, simple and controllable process

Inactive Publication Date: 2014-02-19
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Obviously, if the powder coating is endowed with superhydrophobicity, the powder coating will have more excellent waterproof, self-cleaning, antifouling, corrosion resistance, and antibacterial and antifungal properties. Therefore, superhydrophobic powder coatings have become more popular in recent years It has received extensive attention. Although some preparation methods of superhydrophobic powder coatings have been reported, such as polymerization method and microphase separation method, most of the methods either use high raw material costs, or complex formulas and processes, or use raw materials that are harmful to the environment. Pollution, thus restricting the large-scale production and application of superhydrophobic powder coatings

Method used

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  • Preparation method of super-hydrophobic ferric oxide powder coating
  • Preparation method of super-hydrophobic ferric oxide powder coating
  • Preparation method of super-hydrophobic ferric oxide powder coating

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Embodiment 1

[0019] First, add micron-sized iron oxide powder with a particle size range of 1-10 μm, nano-sized iron oxide powder with a particle size range of 20-80 nm, stearic acid and solid paraffin at a mass ratio of 5:10:1:2 into the stirring tank And in the atmosphere at 5°C, stir at a speed of 400 rpm for 30 minutes to form a homogeneous mixture, then heat the mixture to 60°C and continue stirring at the same speed for 30 minutes, then cool the mixture naturally in the atmosphere 2 hours, just obtain superhydrophobic iron oxide powder; Gained superhydrophobic iron oxide powder is smeared on glass substrate and obtained surface and the coating that water contact angle is 151° (such as figure 1 shown), the roll angle is 8°.

Embodiment 2

[0021] First, add micron-sized iron oxide powder with a particle size range of 10-20 μm, nano-sized iron oxide powder with a particle size range of 100-200 nm, stearic acid and solid paraffin in a mass ratio of 8:10:2:2 to the stirring tank And in the atmosphere at 25°C, stir at a speed of 1000 rpm for 60 minutes to form a homogeneous mixture, then heat the mixture to 80°C and continue to stir at the same speed for 50 minutes, then cool the mixture naturally in the atmosphere 8 hours, just obtain superhydrophobic iron oxide powder; Gained superhydrophobic iron oxide powder is smeared on the ceramic substrate and obtained the surface and the coating that water contact angle is 153° (such as figure 2 shown), the roll angle is 5°.

Embodiment 3

[0023] First, add micron-sized iron oxide powder with a particle size range of 5-10 μm, nano-sized iron oxide powder with a particle size range of 50-150 nm, stearic acid and solid paraffin in a mass ratio of 6:10:1.5:2 into the stirring tank And in the atmospheric environment of 20 ℃ with the speed of 500 rpm stirring for 40 minutes to form a homogeneous mixture, then the mixture was heated to 70 ℃ and continued to stir for 40 minutes at the same speed, then the mixture was naturally cooled in the atmospheric environment 6 hours, just obtain superhydrophobic iron oxide powder; Gained superhydrophobic iron oxide powder is smeared on metal substrate and obtained surface and the coating that water contact angle is 156° (such as image 3 shown), the roll angle is 3°.

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Abstract

The invention discloses a preparation method of a super-hydrophobic ferric oxide powder coating. The preparation method comprises the following steps: firstly, adding micron-sized ferric oxide powder, nano-sized ferric oxide powder, stearic acid and solid paraffin in a mass ratio of (5-8): 10: (1-2): 2 into a stirring tank, stirring the added substances for 30-60 minutes in an atmospheric environment at a temperature of 5-25 DEG C so as to form a uniform mixture; then, heating the mixture to 60-80 DEG C and continuing to stir for 30-50 minutes, and carrying out natural cooling on the mixture for 2-8 hours in an atmospheric environment so as to obtain super-hydrophobic ferric oxide powder; and finally, smearing the obtained super-hydrophobic ferric oxide powder on glass, ceramic, metal, paper and other substrates, so that a super hydrophobic property can be achieved, wherein the contact angle is 150-156 degrees, and the rolling angle is less than 8 degrees. Compared with the prior art, the preparation method of a super-hydrophobic ferric oxide powder coating disclosed by the invention is simple and controllable in process, low in cost, pollution-free to the environment, and has a good industrialization prospect.

Description

technical field [0001] The invention belongs to the technical field of preparation of superhydrophobic materials, and in particular relates to a preparation method of superhydrophobic iron oxide powder coating. Background technique [0002] Powder coatings are widely used in industry, agriculture, and daily life, mainly for coating and protection. However, most of the powder coatings currently on the market are not waterproof and do not have self-cleaning properties, and their surfaces are easily contaminated by sewage. pollute. [0003] Inspired by the lotus leaf effect, superhydrophobic materials with water contact angles greater than 150o have attracted extensive attention in recent years. The typical characteristics of superhydrophobic materials are: liquids such as water droplets and sewage are usually spherical on the surface of superhydrophobic materials, and it is difficult for liquids to remain stably on the surface of superhydrophobic materials. It will quickly r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/03
Inventor 袁志庆王宪宾吉平王梦蕾黄娟
Owner HUNAN UNIV OF TECH