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Super-hydrophobic coating and preparation method thereof

A technology of super-hydrophobic coatings and water baths, applied in the direction of coatings, etc., can solve the problems of troublesome preparation, harsh conditions, unfavorable coating hydrophobic properties, etc., and achieve the effect of improving wear resistance and enhancing wear resistance

Inactive Publication Date: 2016-03-09
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, methods for preparing superhydrophobic surfaces include sol-gel method, chemical vapor deposition, phase separation, electrodeposition, and laser engraving. These methods often have disadvantages such as troublesome preparation and harsh conditions.
It is an effective method to improve the roughness of the hydrophobic surface by using particles of micron or nanometer size. The commonly used particles are SiO 2 , Fe 3 o 4 , ZnO, etc., but these particles are hydrophilic particles, which are not conducive to improving the hydrophobicity of the coating

Method used

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  • Super-hydrophobic coating and preparation method thereof

Examples

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Embodiment 1

[0035] A kind of superhydrophobic coating of the present invention, this superhydrophobic coating comprises the component of following mass parts: 7.5 parts of polyvinylidene fluoride resins, 5 parts of polymethyl methacrylates, 60 parts of N, N-dimethylformamide, 27.5 parts of ceria particles, wherein the average particle diameter of ceria particles is 10 μm.

[0036] A kind of preparation method of the superhydrophobic coating of above-mentioned present embodiment, comprises the following steps: first 7.5 parts of polyvinylidene fluoride resins, 5 parts of polymethyl methacrylates, 60 parts of N,N-dimethylformamide are mixed, Stir in a water bath at 70°C to fully dissolve the resin to obtain a mixed resin; then add cerium oxide particles and stir thoroughly to obtain a superhydrophobic coating.

[0037] Coat the superhydrophobic coating prepared above on the glass fiber reinforced epoxy resin-based composite substrate after sanding with sandpaper (such as No. 400 sandpaper),...

Embodiment 2

[0045] A kind of superhydrophobic coating of the present invention, this superhydrophobic coating comprises the component of following mass parts: 7.5 parts of polyvinylidene fluoride resins, 5 parts of polymethyl methacrylates, 60 parts of N, N-dimethylformamide, 27.5 parts of ceria particles, chopped carbon fibers accounting for 3‰ of the total mass of the paint, wherein the average particle diameter of the ceria particles is 10 μm, and the length of the chopped carbon fibers is 3 mm.

[0046] A kind of preparation method of the superhydrophobic coating of above-mentioned present embodiment, comprises the following steps: earlier with 7.5 parts of polyvinylidene fluoride resins, 5 parts of polymethyl methacrylates, 60 parts of N, N-dimethylformamide are mixed, Stir in a water bath at 70°C to fully dissolve the resin to obtain a mixed resin; then add cerium oxide particles and chopped carbon fibers and stir thoroughly to obtain a superhydrophobic coating.

[0047] The superhy...

Embodiment 3

[0052] A superhydrophobic coating of the present invention and its preparation method are basically the same as in Example 1, except that the substrate used is glass. The coating surface of the obtained superhydrophobic coating has a contact angle with water of 151° to 154°.

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Abstract

The invention discloses a super-hydrophobic coating and a preparation method thereof. The super-hydrophobic coating comprises the following components in parts by mass: 2.5-9 parts of fluororesin, 2-7.5 parts of polymethyl methacrylate, 20-30 parts of inorganic microparticles and 60-70 parts of a diluent. The preparation method comprises the following steps of mixing the fluororesin, polymethyl methacrylate and the diluent; sufficiently stirring under the condition of 60-80-DEG C water bath; adding the inorganic microparticles; and uniformly stirring to obtain the super-hydrophobic coating. The super-hydrophobic coating disclosed by the invention has favorable super-hydrophobicity and wear resistance; the surface of the material or the used particles are not needed to be modified; and the preparation method is simple and easy to implement.

Description

technical field [0001] The invention belongs to the field of coating preparation, and in particular relates to a superhydrophobic coating and a preparation method thereof. Background technique [0002] Over the past 10 years, superhydrophobic phenomena with contact angles greater than 150° and rolling angles less than 10° have attracted widespread attention due to their applicability in self-cleaning, anti-icing, and oil-water separation. And studies have shown that two conditions must be met to prepare a superhydrophobic surface: the use of low surface energy substances and the construction of micro-nano secondary structures on the surface of the material. [0003] At present, methods for preparing superhydrophobic surfaces include sol-gel method, chemical vapor deposition, phase separation, electrodeposition, and laser engraving, etc. These methods often have disadvantages such as troublesome preparation and harsh conditions. It is an effective method to improve the rough...

Claims

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Application Information

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IPC IPC(8): C09D127/16C09D133/12C09D7/12
Inventor 彭超义吴彬瑞曾竟成王堋人杨孚标
Owner NAT UNIV OF DEFENSE TECH
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