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Super-hydrophobic coating material, preparation method thereof and super-hydrophobic coating

A technology of super-hydrophobic coating and silicon-hydrogen bonding, which is applied in coatings and other directions, can solve the problems of cumbersome and complicated preparation methods of super-hydrophobic coatings, poor durability and practicability, and low mechanical strength, so as to achieve super-hydrophobic performance and durability. Good, high mechanical strength effect

Inactive Publication Date: 2011-05-11
HENKEL KGAA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the problems of the existing superhydrophobic coating preparation methods such as cumbersome and complex, low mechanical strength, poor durability and practicability, and provide a simple preparation method, high mechanical strength, durability and practicality. Good, self-cleaning superhydrophobic coating material and preparation method thereof

Method used

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  • Super-hydrophobic coating material, preparation method thereof and super-hydrophobic coating
  • Super-hydrophobic coating material, preparation method thereof and super-hydrophobic coating
  • Super-hydrophobic coating material, preparation method thereof and super-hydrophobic coating

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Experimental program
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Effect test

Embodiment 1

[0073] Unless otherwise specified, the steps of preparing superhydrophobic coating materials and coatings in the following examples are all carried out under normal pressure, and the temperature is normal temperature.

[0074] The superhydrophobic coating material that the present invention makes and the performance characterization of coating are as follows:

[0075] The viscosity of the polymer was measured at 25°C±1°C by a NDJ-1A rotational viscometer of China Shende Technology Development Co., Ltd.

[0076] The polymer molecular weight and its distribution were determined by a Waters Breeze 1515 high performance gel permeation chromatograph from Waters Corporation, USA.

[0077] The solid content of the emulsion was measured at 125°C with a Mettler-Toledo HB43-S halogen moisture analyzer.

[0078] The contact angle and rolling angle of the superhydrophobic coating were measured by OCA-20 from Dataphysics, Germany.

[0079] The surface morphology of the superhydrophobic c...

Embodiment 2

[0105] The preparation method of the super-hydrophobic coating material: at room temperature, add the components in Table 2 into a high-speed dispersion kettle, and stir at a speed of 1500 rpm for 20 minutes to make it evenly mixed. Then, at 1500 rpm, 92.36 g of deionized water was added dropwise at a constant speed within 30 minutes; after the dripping, continued stirring at 200 rpm for 30 minutes to obtain the final product.

[0106] The preparation method of the super-hydrophobic surface coating: the prepared super-hydrophobic coating material is sprayed on the metal substrate, and cured at 160° C. for 10 minutes to form a film to obtain the super-hydrophobic coating. The superhydrophobic coating has a water contact angle of 179.7° and a rolling angle of 3.44°.

[0107] Table 2

[0108]

Embodiment 3

[0110] The preparation method of the superhydrophobic coating material: at room temperature, add the components in Table 3 into a high-speed dispersion kettle, and stir at a speed of 1500rpm for 20 minutes to make it evenly mixed. Then, at 1500 rpm, add 46.6 g of deionized water dropwise at a constant speed within 30 minutes; after the dripping, continue stirring at 200 rpm for 30 minutes to obtain the final product.

[0111] The preparation method of the super-hydrophobic surface coating: the prepared super-hydrophobic coating material is sprayed on the metal substrate, and cured at 160° C. for 10 minutes to form a film to obtain the super-hydrophobic coating. The superhydrophobic coating has a water contact angle of 169.9° and a rolling angle of 9.4°.

[0112] The coating had a pencil hardness of 4H as measured by ASTM D3363-05.

[0113] table 3

[0114]

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Abstract

The invention provides a super-hydrophobic coating material, which comprises water or emulsifier or organic solvent, a polysiloxane compound having more than three silicon-hydrogen bonds and solid particles. The invention also provides the preparation method of the super-hydrophobic coating material and the preparation method of a super-hydrophobic coating. The invention provides the super-hydrophobic coating material which is prepared by a simple method, has high mechanical strength, is durable, practical and capable of self-cleaning and the preparation method of the super-hydrophobic coating material. The super-hydrophobic coating material provided by the invention can solidify in a wider temperature range and is applicable to substrates made of various materials such as metal, glass and high polymer materials.

Description

technical field [0001] The invention relates to a superhydrophobic coating material, a preparation method thereof, and a prepared superhydrophobic coating. Background technique [0002] Superhydrophobic surfaces have attracted much attention due to their hydrophobic, antifouling, and self-cleaning properties. These special properties make it of great application value in many fields, such as buildings, ships, sanitary ware, satellite antennas, cables, glass and other fields. In fact, there are many materials in nature with superhydrophobic and self-cleaning properties, such as lotus leaves and cabbage leaves. German biologists Barthlott and Neihuis studied the leaf surface [Barthlott W, Neinhuis C. ("Purity of the sacred lotus, or escape from contamination in biological surfaces.) , Planta, 1997, 202: 1)], it is considered that this self-cleaning feature is caused by the presence of microstructured papillae on the rough surface and the presence of hydrophobic waxy substanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/05C09D7/12
Inventor 徐建岩张勇李志明邢文涛张宜荣
Owner HENKEL KGAA
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