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Functional gradient composite structure wear-resistant transparent super-hydrophobic coating and preparation method thereof

A super-hydrophobic coating and composite structure technology, applied in coatings, polyurea/polyurethane coatings, devices for coating liquids on surfaces, etc., can solve the problem of poor aging resistance, low mechanical strength, and insufficient transparency of super-hydrophobic coatings. problem, to achieve the effect of good mechanical properties, good hydrophobic properties, and excellent self-cleaning properties

Inactive Publication Date: 2016-11-09
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for preparing a wear-resistant and transparent superhydrophobic coating with a functional gradient composite structure. The method uses methyltrimethoxysilane as a carrier, and its excellent light transmittance, aging resistance and Good insulation and mechanical strength solve the shortcomings of simple silica superhydrophobic coatings such as insufficient transparency, low mechanical strength and poor aging resistance; through polyurethane modification, the final product has superhydrophobicity and strong adhesion , high light transmittance and high wear resistance coating, which can be coated on the base material by dipping and pulling coating, spin coating, brushing, spraying and other methods

Method used

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  • Functional gradient composite structure wear-resistant transparent super-hydrophobic coating and preparation method thereof
  • Functional gradient composite structure wear-resistant transparent super-hydrophobic coating and preparation method thereof
  • Functional gradient composite structure wear-resistant transparent super-hydrophobic coating and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0053] A. Preparation of modified enhanced bonding layer solution:

[0054] Take 10ml of polyurethane solution with a volume concentration of 40% in a beaker, add 60ml of acetone solution with a volume concentration of 99%, ultrasonically disperse for 1 hour, and stir for 2 hours until it is completely dissolved to obtain a modified and reinforced adhesive layer solution.

[0055] B. Preparation of polyurethane and silica mixed transition layer solution:

[0056] The modified enhanced bonding layer solution is mixed with the micro-nano superhydrophobic layer matrix solution according to the volume ratio of 1:2, and after stirring, a transition layer solution mixed with polyurethane and silicon dioxide is obtained.

[0057] C. Preparation of micro-nano superhydrophobic layer matrix solution:

[0058] (1) Dissolve 2ml of a 99% volume concentration methyltrimethoxysilane solution in 19.48ml of a volume concentration of 99% methanol, fully stir it at room temperature to dissolve ...

Embodiment 2

[0070] A. Preparation of modified enhanced bonding layer solution:

[0071] Take 10ml of polyurethane solution with a volume concentration of 40% in a beaker, add 60ml of acetone solution with a volume concentration of 99%, ultrasonically disperse for 1 hour, and stir for 2 hours until it is completely dissolved to obtain a modified and reinforced adhesive layer solution.

[0072] B. Preparation of polyurethane and silica mixed transition layer solution:

[0073] The modified enhanced bonding layer solution is mixed with the micro-nano superhydrophobic layer matrix solution according to the volume ratio of 1:2, and after stirring, a transition layer solution mixed with polyurethane and silicon dioxide is obtained.

[0074] C. Preparation of micro-nano superhydrophobic layer matrix solution:

[0075] (1) Dissolve 2ml of a 99% volume concentration methyltrimethoxysilane solution in 19.48ml of a volume concentration of 99% methanol, fully stir it at room temperature to dissolve ...

Embodiment 3

[0087] A. Preparation of modified enhanced bonding layer solution:

[0088] Take 10ml of polyurethane solution with a volume concentration of 40% in a beaker, add 60ml of acetone solution with a volume concentration of 99%, ultrasonically disperse for 1 hour, and stir for 2 hours until it is completely dissolved to obtain a modified and reinforced adhesive layer solution.

[0089] B. Preparation of polyurethane and silica mixed transition layer solution:

[0090] The modified enhanced bonding layer solution is mixed with the micro-nano superhydrophobic layer matrix solution according to the volume ratio of 1:2, and after stirring, a transition layer solution mixed with polyurethane and silicon dioxide is obtained.

[0091] C. Preparation of micro-nano superhydrophobic layer matrix solution:

[0092] (1) Dissolve 2ml of a 99% volume concentration methyltrimethoxysilane solution in 19.48ml of a volume concentration of 99% methanol, fully stir it at room temperature to dissolve ...

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Abstract

The invention discloses a functional gradient composite structure wear-resistant transparent super-hydrophobic coating and a preparation method thereof. Specifically, the method consists of: firstly coating a substrate with a polyurethane modified reinforced bonding layer, then conducting coating of a polyurethane and super-hydrophobic compound transition layer to obtain a polyurethane / polyurethane and silicon dioxide transition layer compound coating, and finally performing coating of a micro-nano super-hydrophobic layer, thus forming a polyurethane / polyurethane-silicon dioxide / silicon dioxide functional gradient composite structure wear-resistant transparent super-hydrophobic coating. The preparation method provided by the invention has the characteristics of simple process, easy operation, normal pressure and low cost, the prepared functional gradient composite structure wear-resistant transparent super-hydrophobic coating can be used for water and fouling prevention on ship surface coatings, automotive glass surfaces, mobile phone screen surfaces and other transparent materials.

Description

technical field [0001] The invention belongs to the technical field of wear-resistant transparent composite super-hydrophobic functional coatings, and mainly relates to a method for preparing a wear-resistant transparent super-hydrophobic coating with a functional gradient composite structure using methyltrimethoxysilane as a carrier and polyurethane modification . Background technique [0002] A superhydrophobic surface refers to a surface with a contact angle with water greater than 150° and a rolling angle less than 10°. In nature, the surface of lotus leaf has a natural superhydrophobic coating, and its surface has micro-nano structure and low surface energy substances. Superhydrophobic coating has the characteristics of antifouling, antifreeze, self-cleaning, drag reduction, etc., and has a wide range of applications. [0003] The transparent superhydrophobic coating has both transparent and superhydrophobic properties, and can be used in the waterproof and antifoulin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D1/00B05D7/24B05D1/38
CPCB05D1/38B05D7/24C09D1/00C09D175/04
Inventor 罗国强金志鹏谷晓丽张联盟沈强张睿智张建
Owner WUHAN UNIV OF TECH
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