Preparation method for high-wave permeability super-hydrophobic moisture-proofing coating for antenna housing material

A moisture-proof coating and radome technology, which is applied in coatings, epoxy resin coatings, devices for coating liquids on surfaces, etc., can solve the difficulties in processing large-area special-shaped surfaces, poor adhesion and film-forming properties, and processing of heterogeneous surfaces Difficulties and other problems, to achieve the effect of excellent bonding performance, good friction resistance and excellent mechanical properties

Inactive Publication Date: 2012-06-13
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using low surface energy polymers as precursors and porous aluminum plates as templates, superhydrophobic coatings are formed by extrusion. This method brings difficulties to the processing of large-area special-shaped surfaces.
The low surface energy modification method of sol-gel or nano / micro particle wet chemical deposition is used to prepare superhydrophobic coatings, which is simple to prepare, has good repeatability, and has no environmental pollution. However, this method requires high-temperature baking, and the adhesion and film-forming properties are poor. Requires multiple multilayer depositions
However, based on the methods for constructing super-hydrophobic coatings mentioned above, the electrospinning and phase separation methods used to construct super-hydrophobic coatings on radome materials will affect their performance due to the radome materials being immersed in a large amount of solvents. method, laser etching method and template method require the use of complex devices and difficulties in heterogeneous surface processing

Method used

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  • Preparation method for high-wave permeability super-hydrophobic moisture-proofing coating for antenna housing material
  • Preparation method for high-wave permeability super-hydrophobic moisture-proofing coating for antenna housing material
  • Preparation method for high-wave permeability super-hydrophobic moisture-proofing coating for antenna housing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method of a high-transmission super-hydrophobic moisture-proof coating of a radome material, comprising the following steps:

[0038] (1) Preparation of sealing emulsion:

[0039] Take 14g of polytetrafluoroethylene with a particle size of 20 μm and 5.5g of silicon dioxide with a particle size of 60 μm, and disperse them in 70.4g of acetone solvent, then add 9g of E51 type epoxy resin and 1.1g of triethanolamine, and stir them evenly to obtain Sealing emulsion;

[0040] (2) Preparation of superhydrophobic moisture-proof emulsion:

[0041] Take 12.5g ethyl orthosilicate, dissolve in 50g of absolute ethanol, and make solution A;

[0042] Take 9.1g of ammonia solution and dissolve it in a mixed solution of 18g of water and 80g of absolute ethanol, then add 3g of 20μm polytetrafluoroethylene and 7g of polymethylsilicone to the mixed solution, stir and disperse evenly to obtain emulsion B ;

[0043] Take 10.7g of methyltriethoxysiloxane, dissolve it in 40g ...

Embodiment 2

[0049] A preparation method of a high-transmission super-hydrophobic moisture-proof coating of a radome material, comprising the following steps:

[0050] (1) Preparation of sealing emulsion:

[0051] Take 14g of polytetrafluoroethylene with a particle size of 20 μm and 5.5g of silicon dioxide with a particle size of 60 μm, and disperse them in 70.4g of acetone solvent, then add 9g of E51 type epoxy resin and 1.1g of triethanolamine, and stir them evenly to obtain Sealing emulsion;

[0052] (2) Preparation of superhydrophobic moisture-proof emulsion:

[0053] Take 12.5g ethyl orthosilicate, dissolve in 50g of absolute ethanol, and make solution A;

[0054] Take 9.1g of ammonia solution and dissolve it in a mixed solution of 18g of water and 80g of absolute ethanol, then add 3g of 20μm polytetrafluoroethylene and 7g of polymethylsilicone to the mixed solution, stir and disperse evenly to obtain emulsion B ;

[0055] Take 10.7g of methyltriethoxysiloxane, dissolve it in 40g ...

Embodiment 3

[0061] A preparation method of a high-transmission super-hydrophobic moisture-proof coating of a radome material, comprising the following steps:

[0062] (1) Preparation of sealing emulsion:

[0063] Take 15g of polyvinylidene fluoride with a particle size of 30μm and 5.6g of silicon dioxide with a particle size of 80μm, and disperse them in 68.2g of acetone solvent, then add 10g of E44 epoxy resin and 1.2g of triethylamine, and stir them evenly Obtain the sealing emulsion;

[0064] (2) Preparation of superhydrophobic moisture-proof emulsion:

[0065] Take 12.5g ethyl orthosilicate, dissolve in 50g of absolute ethanol, and make solution A;

[0066] Take 9.1g of ammonia solution and dissolve it in a mixed solution of 18g of water and 80g of absolute ethanol, then add 2g of 30μm polyvinylidene fluoride and 8g of polymethylphenylsilicone resin to the mixed solution, stir and disperse evenly to obtain an emulsion B;

[0067] Take 10.7g of dimethyldiethoxysiloxane, dissolve it...

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Abstract

The invention discloses a preparation method for high-wave permeability and super-hydrophobic moisture-proofing coating for an antenna housing material. The preparation method is characterized by comprising the following steps of: preparing hole-sealing emulsion; preparing super-hydrophobic moisture-proofing emulsion; coating the hole-sealing emulsion on the antenna housing material, surface-drying the film coating under a room temperature, and then curing the film coating under the temperature of 100 DEG C to 140 DEG C; cooling and immersing the film coating to the super-hydrophobic moisture-proofing emulsion; surface-drying the film coating under the room temperature, and curing the film coating under the temperature of 80 DEG C to 160 DEG C to acquire the high-wave permeability and super-hydrophobic moisture-proofing coating for the antenna housing material. Micron-level silicon dioxide and fluorine-containing polymer are used in the method to perform accumulating and hole-sealing;a micron surface structure with certain roughness is provided, and epoxy resin with good viscosity is added to the hole-sealed coating, so that the mechanical property of the hole-sealed coating is improved; a self-growth method is adopted for depositing micron-level fluorine-containing polymer, which is in-situ packaged by organic silicon resin and attached with hydrophobic nanometre silicon dioxide, to the surface of the hole-sealed coating, so that the high-wave permeability and super-hydrophobic moisture-proofing coating of the antenna housing material is prepared.

Description

technical field [0001] The invention belongs to a method for preparing a surface coating of a material, and relates to a preparation technology of an inorganic low-dielectric sealing coating and a low-dielectric micro-nano coating, in particular to a high-transmission super-hydrophobic moisture-proof coating for a radome material layer preparation method. The super-hydrophobic coating prepared by the invention is particularly suitable for the moisture-proof surface of the wave-transmitting material with inorganic substances as the matrix in the radome. Background technique [0002] The radome is a facility to ensure the normal operation of the radar antenna system. At present, the radome materials successfully applied at home and abroad mainly include glass fiber / resin-based composite materials, quartz ceramic materials, quartz fiber reinforced materials, high-silica reinforced phosphate materials, etc. Among them, there are wave-transparent materials based on inorganic sub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/12C09D163/00C09D183/04C09D7/12C09D5/00B05D5/00B05D7/24B05D1/38B05D3/00C09D127/18C09D127/16C09D183/06C09D183/08
Inventor 雷永林霍冀川王秋入邹德军
Owner SOUTHWEAT UNIV OF SCI & TECH
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