Superhydrophobic ceramic coating and preparation method thereof

A ceramic and superhydrophobic technology, applied in the field of applied chemistry, can solve the problems of low thermal stability and mechanical stability of organic materials, reduce the surface free energy of metal materials, and lose superhydrophobicity, etc., so as to improve service performance and avoid high temperature Effect of sintering and improvement of production efficiency

Active Publication Date: 2019-03-01
ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the conventional preparation of metal superhydrophobic surfaces usually requires building a rough structure on the metal substrate and coating the substrate surface with a hydrophobic material to reduce the surface free energy of the meta...

Method used

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  • Superhydrophobic ceramic coating and preparation method thereof
  • Superhydrophobic ceramic coating and preparation method thereof
  • Superhydrophobic ceramic coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0048] The precursor component of this example is polysilazane (Polysilazane 1, PSZ1), a low-viscosity liquid organic polysilazane polymer with an average molecular weight of 600-1000 and a composition of repeating Si-N units. The laser is DLS-3000C Continuous high-power semiconductor laser, laser wavelength 980nm, maximum output power 3KW, spot size 14mm×2.5mm, working distance 310±10mm.

[0049] The preparation method of the above ceramic coating consists of the following steps:

[0050] (1) Sandblast the substrate (a 45 steel sample block with a length of 20mm, a width of 20mm, and a height of 5mm), then clean it with ethanol and acetone, and dry it for later use.

[0051] (2) Coating 30% of the xylene solution of the organic polymer ceramic precursor PSZ1 on the surface of the substrate, and then adding the filler ferrocene to make the ferrocene in the total material system (containing 30% organic polymer ceramic precursor PSZ1 The mass fraction of the xylene solution + filler) ...

Embodiment 2

[0055] The precursor component of this example is PSZ2 (Polysilazane2), a low-viscosity liquid organopolysilazane polymer with an average molecular weight of 500-900 and a composition of repeating Si-N units. The laser is a DLS-3000C continuous high-power semiconductor laser , The laser wavelength is 980nm, the maximum output power is 3KW, the spot size is 14mm×2.5mm, and the working distance is 310mm±10mm.

[0056] The preparation method of the above ceramic coating consists of the following steps:

[0057] (1) Sandblast the substrate (a 45 steel sample block with a length of 20mm, a width of 20mm, and a height of 5mm), then clean it with ethanol and acetone, and dry it for later use.

[0058] (2) Coat 50% of the xylene solution of the organic polymer ceramic precursor PSZ2 on the surface of the substrate, and then add the filler tetrabutyl titanate to make the tetrabutyl titanate in the total material system (containing 30% organic polymer ceramic The mass fraction of precursor PS...

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Abstract

The invention provides a superhydrophobic ceramic coating and a preparation method thereof. The superhydrophobic ceramic coating is prepared through the steps that a substrate is pretreated, and the substrate is coated or sprayed with a mixture of a polysilazane organic polymer ceramic precursor and filler, wherein the filler is ferrocene or tetrabutyl titanate; under the protection of inert gas,a coating layer is subjected to laser scanning, ceramic conversion is achieved, and the ceramic coating is obtained. According to the method, compared with a traditional high temperature sintering method, sintering is not needed, and energy consumption is reduced; laser energy is concentrated, the heat affected zone is small, the substrate phase composition is not affected, the problem that when the ceramic coating is prepared through the single polysilazane organic polymer ceramic precursor, due to the fact that laser pyrolysis micromolecules overflow, the coating surface has cracks and air holes can be effectively solved, and the obtained ceramic coating has the high hardness and corrosion resistance and the excellent super-hydrophobicity.

Description

Technical field [0001] The invention relates to the field of applied chemistry, in particular to the field of coating preparation, and more specifically to a ceramic coating with high hardness, high corrosion resistance and excellent superhydrophobicity and a preparation method thereof. Background technique [0002] With the continuous development of mechanical equipment in demanding directions such as high speed, heavy load, integration, high precision, and long life, the working environment for its friction parts is becoming increasingly demanding, and pure metal materials can no longer meet the requirements. The preparation of high-performance coating materials on the surface of metal parts and giving them special functions has become an effective way to solve the reliable service of metal parts under harsh working conditions. [0003] Metal has high surface free energy and is a typical inherently hydrophilic material. Almost all liquids can easily spread on the metal surface a...

Claims

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Application Information

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IPC IPC(8): C23C20/08
CPCC23C20/08
Inventor 刘军秦航乔玉林蔡志海张平柳建杜晓坤王思捷郭杰李恩重
Owner ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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