Preparation method of titanium dioxide-silicon dioxide-epoxy resin composite super-hydrophobic coating

A super-hydrophobic coating, epoxy resin technology, applied in epoxy resin coatings, coatings and other directions, can solve problems such as limiting the wide application of super-hydrophobic coatings, inability to form large-area films, and complex preparation processes.

Inactive Publication Date: 2012-10-03
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The preparation of most superhydrophobic surfaces in the existing reports needs to be carried out under strict laboratory equipment and process control conditions, and

Method used

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  • Preparation method of titanium dioxide-silicon dioxide-epoxy resin composite super-hydrophobic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of epoxy-modified nano-titanium dioxide sol

[0033] Add 0.5g of nano-titanium dioxide particles, 5g of silane coupling agent with reactive epoxy groups and 6g of ammonia water into 100ml of ethanol, stir at room temperature for 8 hours, heat to 80°C to remove solvent and by-products, and obtain epoxy-modified Sexual nano-titanium dioxide sol;

[0034] (2) Preparation of vinyl-modified nano-silica spheres

[0035] Add 0.5g of nano-silica particles, 2.5g of silane coupling agent with reactive vinyl groups and 5g of ammonia water to 50ml of ethanol, react at 30°C for 8 hours, dry and grind them into powder to obtain vinyl-modified nano Silica spheres;

[0036] (3) Preparation of polymer-grafted nano-silica spheres

[0037] Add 0.5g of vinyl-modified nano-silica spheres, 0.05g of azobisisobutyronitrile and 4g of α-methylstyrene into 50ml of toluene, carry out grafting reaction at 70°C for 7 hours, then wash, Drying to obtain polymer...

Embodiment 2

[0043] (1) Preparation of epoxy-modified nano-titanium dioxide sol

[0044] Add 1.5g of nano-titanium dioxide particles, 20g of silane coupling agent with reactive epoxy groups and 18g of ammonia water into 250ml of ethanol, stir and react at room temperature for 8 hours, heat to 100°C to remove solvent and by-products, and obtain epoxy-modified Sexual nano-titanium dioxide sol;

[0045] (2) Preparation of vinyl-modified nano-silica spheres

[0046] Add 1.5g of nano-silica particles, 9.5g of silane coupling agent with reactive vinyl groups and 16.5g of ammonia water into 150ml of ethanol, react at 30°C for 8 hours, dry and grind into powder to obtain vinyl-modified Nano silica balls;

[0047] (3) Preparation of polymer-grafted nano-silica spheres

[0048]Add 1.5g of vinyl-modified nano-silica spheres, 0.3g of azobisisobutyronitrile and 24g of α-methylstyrene into 150ml of toluene, carry out grafting reaction at 70°C for 7 hours, then wash, Drying to obtain po...

Embodiment 3

[0054] (1) Preparation of epoxy-modified nano-titanium dioxide sol

[0055] Add 1g of nano-titanium dioxide particles, 12g of silane coupling agent with reactive epoxy groups and 11g of ammonia water to 200ml of ethanol, stir at room temperature for 8 hours, heat to 80°C to remove solvent and by-products, and obtain epoxy group modified Nano titanium dioxide sol;

[0056] (2) Preparation of vinyl-modified nano-silica spheres

[0057] Add 1g of nano-silica particles, 6g of reactive vinyl silane coupling agent and 10g of ammonia water to 100ml of ethanol, react at 30°C for 8 hours, dry and grind into powder to obtain vinyl-modified nano-dioxide Silicon ball;

[0058] (3) Preparation of polymer-grafted nano-silica spheres

[0059] Add 1g of vinyl-modified nano-silica spheres, 0.15g of azobisisobutyronitrile and 10g of α-methylstyrene into 100ml of toluene, carry out grafting reaction at 70°C for 7 hours, then wash and dry Obtain the nano-silica ball of po...

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Abstract

The invention discloses a preparation method of a titanium dioxide-silicon dioxide-epoxy resin composite super-hydrophobic coating. The preparation method is characterized by comprising following steps of (1) preparing epoxy modified nano titanium dioxide sol; (2) preparing a vinyl decorated nano silicon dioxide ball; (3) preparing a polymer grafted nano silicon dioxide ball; (4) preparing coating sol; and (5) coating on a substrate material, and solidifying and cross-linking the substrate material to obtain the titanium dioxide-silicon dioxide-epoxy resin composite super-hydrophobic coating. The process utilized by the method is simple, and is good in repeatability; and the prepared coating has excellent super-hydrophobic performance and excellent self-cleaning performance and is suitable for the industrialized production of the super-hydrophobic paint.

Description

technical field [0001] The invention relates to the technical field of application of organic-inorganic composite materials, in particular to a method for preparing a titanium dioxide-silicon dioxide-epoxy resin composite superhydrophobic coating. Background technique [0002] Organic / inorganic nanocomposites have attracted more and more attention due to their unique structures and properties. Organic-inorganic composites combine the characteristics of organic materials (good toughness, impact resistance, light weight, easy processing, etc.) and inorganic materials. advantages (high strength, hardness, thermal stability, corrosion resistance and excellent optical properties). As an extremely attractive material in the 21st century, organic-inorganic nanocomposites have shown important research value and application prospects in the fields of automobiles, building materials, aerospace, aviation, energy, environmental protection, and biomedicine. [0003] Surface wettability ...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D7/12C04B41/50C03C17/22C03C17/32
Inventor 刘伟良徐文华张丽东姚金水
Owner QILU UNIV OF TECH
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