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Method for preparing epoxy resin super-hydrophobic coat

A technology of super-hydrophobic coating and epoxy resin, applied in the direction of epoxy resin coating, coating, liquid spraying equipment, etc., can solve the problems of poor applicability, high production cost of super-hydrophobic surface, complicated preparation process, etc., and achieve low cost , easy to obtain raw materials, good repeatability

Inactive Publication Date: 2009-11-11
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a simplified preparation method of epoxy resin superhydrophobic coating, solve the problems of high production cost, complicated preparation process and poor applicability of superhydrophobic surface, and use organic / inorganic hybrid method to coat the surface of the base material Film, after heating and curing, it can be directly prepared without surface modification, and the contact angle is greater than 150°, and the epoxy resin superhydrophobic coating with excellent comprehensive properties

Method used

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  • Method for preparing epoxy resin super-hydrophobic coat
  • Method for preparing epoxy resin super-hydrophobic coat
  • Method for preparing epoxy resin super-hydrophobic coat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Preparation of coating sol:

[0044] Dissolve 0.35g of nano-sized silica balls and 0.21g of micron-sized silica particles in 25ml of absolute ethanol, add silane coupling agent KH-5500.18g, stir and react at room temperature for a period of time, then add epoxy resin coating 6.2 g and octadecyltrichlorosilane 0.21g, continue stirring reaction, make coating sol; Epoxy resin selects epoxy resin water-based paint for use;

[0045] (2) Coating film on the surface of the base material:

[0046] Immerse the glass sheet in the sol prepared in step (1), slowly and uniformly extract it from the sol with a pulling machine, the pulling speed is 50 mm / s, and leave it standing at room temperature after being proposed;

[0047] (3) Heating and curing process:

[0048] Put the base material of the coating film in step (2) into an oven, heat it up to 180°C to cure and crosslink the epoxy resin, and take it out to obtain a superhydrophobic epoxy resin coating.

[0049] as attache...

Embodiment 2

[0051] (1) Preparation of coating sol:

[0052]Dissolve 0.85g of nano-sized silica balls and 0.53g of micron-sized silica particles in 25ml of absolute ethanol, add 0.19g of silane coupling agent KH-5500, stir and react at room temperature for a period of time, and then add 6.2g of epoxy resin coating With octadecyl trichlorosilane 0.21g, continue stirring reaction, make coating sol; Epoxy resin is selected epoxy resin water-based paint;

[0053] (2) Coating film on the surface of the base material:

[0054] Immerse the glass sheet in the sol prepared in step (1), slowly and uniformly extract it from the sol with a pulling machine, the pulling speed is 5 mm / s, and leave it standing at room temperature after being proposed;

[0055] (3) Heating and curing process:

[0056] Put the base material of the coating film in step (2) into an oven, heat at 180°C to cure and crosslink the epoxy resin, and take it out to obtain the superhydrophobic epoxy resin coating.

[0057] as atta...

Embodiment 3

[0059] (1) Preparation of coating sol:

[0060] Dissolve 0.31g of nano-sized silica balls and 0.33g of micron-sized silica particles in 25ml of absolute ethanol, add silane coupling agent KH-5500.44g, stir and react at 60°C for a period of time, then add epoxy resin coating 6.1 g and octadecyl trichlorosilane 0.20g, continue stirring reaction, make coating sol; Epoxy resin chooses waterborne epoxy resin coating;

[0061] (2) Coating film on the surface of the base material:

[0062] Immerse the glass sheet in the sol prepared in step (1), slowly and uniformly extract it from the sol with a pulling machine, the pulling speed is 50 mm / s, and leave it standing at room temperature after being proposed;

[0063] (3) Heating and curing process:

[0064] Put the base material of the coating film in step (2) into an oven, heat at a temperature of 200°C to cure and crosslink the epoxy resin, and take it out to obtain an epoxy resin superhydrophobic coating.

[0065] as attached im...

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Abstract

The invention discloses a method for preparing an epoxy resin super-hydrophobic coat, comprising the following steps: (1), preparing collosol of the coat: dissolving silicon dioxide particles in a solvent, adding a silane coupling agent, heating and stirring for reaction, adding an epoxy resin paint and a hydrophobing agent, stirring for reaction, and obtaining the collosol of the coating layer; (2) coating film on the surface of a substrate material: coating the collosol obtained in the step (1) on the surface of the substrate through the way of lifting-pulling coating film, rotationally coating, curtain coating or spraying, after lifting, placing statically at the room temperature for using; and (3) heating and curing: putting the substrate material coated by the film in the step (2) in an oven, raising temperature to heat to make the epoxy resin cure and cross, taking out to obtain the epoxy resin super-hydrophobic coat. The invention has the advantages of easy technique, easily obtained raw materials, low cost and good repeatability; and the obtained coat has good super-hydrophobicity and self-cleaning performance for the industrial production of the super-hydrophobic paint properly.

Description

technical field [0001] The invention relates to a method for preparing a hydrophobic coating, in particular to a method for preparing an epoxy resin super-hydrophobic coating by a surface graft modification method and organic / inorganic composite. Background technique [0002] Surface properties are one of the most important physical and chemical properties of solid materials, and many physical and chemical processes, such as adsorption, catalysis, adhesion, friction, etc., are closely related to the surface properties of substances. The wettability is a main aspect of the surface properties of materials, and plays an important role in the fields of catalysis, coating, waterproofing, and biomedical materials. In recent years, superhydrophobic surfaces have attracted widespread attention. The hydrophobic properties of surfaces are usually described by the static contact angle and dynamic rolling angle of the surface with water. The so-called superhydrophobic surface refers to ...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D7/12B05B7/14B05B7/02B05B3/00B05B5/08C03C17/32
Inventor 乌学东周岚
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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