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Method for preparing epoxy resin super-hydrophobic coat

A technology of super-hydrophobic coating and epoxy resin, applied in 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: 2011-06-22
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 micro-sized silica particles in 25ml of absolute ethanol, add 0.18g of silane coupling agent KH-550, stir for a period of time at room temperature, and then add epoxy resin coating 6.2g and 0.21g of octadecyltrichlorosilane, continue to stir and react to prepare a coating sol; epoxy resin is selected as epoxy resin water-based paint;

[0045] (2) Surface coating film of base material:

[0046] Dip the glass sheet into the sol prepared in step (1), and use a pulling machine to slowly and uniformly remove from the sol at a pulling speed of 50 mm / s, and then stand at room temperature for later use;

[0047] (3) Heating curing process:

[0048] Put the base material of the coating film in step (2) into an oven, raise it to 180°C and heat it to cure and crosslink the epoxy resin, and after taking it out, the epoxy resin superhydrophobic coating is obtained.

[0049] As attached figure 1 As ...

Embodiment 2

[0051] (1) Preparation of coating sol:

[0052] Dissolve 0.85g of nano-sized silica balls and 0.53g of micro-sized silica particles in 25ml of absolute ethanol, add 0.19g of silane coupling agent KH-550, stir for a period of time at room temperature, and then add epoxy resin coating 6.2 g and 0.21g of octadecyltrichlorosilane, continue to stir the reaction to prepare a coating sol; epoxy resin is selected as epoxy resin water-based paint;

[0053] (2) Surface coating film of base material:

[0054] Dip the glass sheet into the sol prepared in step (1), and use a pulling machine to slowly and uniformly remove from the sol at a pulling speed of 5 mm / s, and then stand at room temperature for use after being lifted;

[0055] (3) Heating curing process:

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

[0057] As attached figu...

Embodiment 3

[0059] (1) Preparation of coating sol:

[0060] Dissolve 0.31g of nano-sized silica balls and 0.33g of micro-sized silica particles in 25ml of absolute ethanol, add 0.44g of silane coupling agent KH-550, stir for a period of time at 60℃, and then add epoxy resin coating 6.1g and 0.20g of octadecyltrichlorosilane, continue to stir and react to prepare a coating sol; epoxy resin is selected as water-based epoxy resin paint;

[0061] (2) Surface coating film of base material:

[0062] Dip the glass sheet into the sol prepared in step (1), and use a pulling machine to slowly and uniformly remove from the sol at a pulling speed of 50 mm / s, and then stand at room temperature for later use;

[0063] (3) Heating curing process:

[0064] Put the base material of the coating film in step (2) into an oven, raise the temperature of 200 DEG C and heat to cure and crosslink the epoxy resin, and after taking it out, the epoxy resin super-hydrophobic coating is obtained.

[0065] As attached image 3 A...

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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) inan 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, specifically a method for preparing an epoxy resin super-hydrophobic coating by a surface graft modification method and an organic / inorganic composite. Background technique [0002] Surface properties are one of the most important physical and chemical properties of solid materials. Many physical and chemical processes, such as adsorption, catalysis, adhesion, friction, etc., are closely related to the surface properties of materials. The wettability is a major 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 the surface are usually described by the static contact angle of the surface with water and the dynamic rolling angle. The so-called superhydrophobic surface means that th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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