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A preparation method of superhydrophobic surface of copolymer grafted hollow silica microspheres

A super-hydrophobic surface, silica technology, applied in the field of surface chemistry, can solve the problems of poor super-hydrophobic surface strength, different operation complexity, different processes, etc., to achieve stable performance, high mechanical strength, and good transparency.

Inactive Publication Date: 2016-03-30
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods all use the surface modification of silica particles to obtain a super-hydrophobic surface. The process is different and the operation complexity is different. Most of the super-hydrophobic materials and the substrate materials are combined by physical adsorption. The obtained super-hydrophobic The strength of the surface is poor, and the application is limited

Method used

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  • A preparation method of superhydrophobic surface of copolymer grafted hollow silica microspheres

Examples

Experimental program
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Effect test

Embodiment 1

[0027] 1. Synthesis of bisphenol A diglycidyl ether monoacrylate

[0028] Dissolve 0.025g of potassium hydroxide in 0.648g of acrylic acid, add 0.3g of hydroquinone into 40ml of toluene solution of 3.4g of bisphenol A diglycidyl ether, mix the above two solutions, blow nitrogen, at 110°C Stir the reaction for 48 hours, cool to room temperature, add 15ml toluene and 7.5ml deionized water, stir thoroughly, extract, separate liquid, wash with deionized water until neutral, distill off the solvent under reduced pressure, and obtain bisphenol A di Glycidyl ether monoacrylate;

[0029] 2. Synthesis of styrene-bisphenol A diglycidyl ether monoacrylate copolymer

[0030] Add 4.16g of styrene and 1.03g of bisphenol A diglycidyl ether monoacrylate to 12ml of tetrahydrofuran, add 0.035g of azobisisobutyronitrile, blow nitrogen, and stir the reaction at 70°C for 24 hours. Precipitate with water volume ratio of 2:8, filter with suction, dissolve the precipitate with acetone, precipitate ...

Embodiment 2

[0040] 1. Synthesis of bisphenol A diglycidyl ether monoacrylate

[0041] Dissolve 0.05g of potassium hydroxide in 1.296g of acrylic acid, add 0.58g of hydroquinone into 80ml of toluene solution of 6.8g of bisphenol A diglycidyl ether, mix the above two solutions, blow nitrogen, at 108°C Stir the reaction for 550 hours, cool to room temperature, add 30ml of toluene and 15ml of deionized water, stir thoroughly, extract, separate liquid, wash with deionized water until neutral, distill off the solvent under reduced pressure, and obtain bisphenol A bisphenol A dihydrate by column chromatography Glyceryl ether monoacrylate;

[0042] 2. Synthesis of styrene-bisphenol A diglycidyl ether monoacrylate copolymer

[0043]Add 5.15g of styrene and 1.03g of bisphenol A diglycidyl ether monoacrylate to 15ml of tetrahydrofuran, add 0.04g of azobisisobutyronitrile, blow nitrogen, and stir the reaction at 75°C for 26 hours. Precipitate with water volume ratio of 2:8, filter with suction, dis...

Embodiment 3

[0053] 1. Synthesis of bisphenol A diglycidyl ether monoacrylate

[0054] Dissolve 0.03g of potassium hydroxide in 0.648g of acrylic acid, add 0.38g of hydroquinone into 40ml of toluene solution of 3.4g of bisphenol A diglycidyl ether, mix the above two solutions, and blow nitrogen, at 105°C Stir the reaction for 60 hours, cool to room temperature, add 15ml toluene and 7.5ml deionized water, stir thoroughly, extract, separate liquid, wash with deionized water until neutral, distill off the solvent under reduced pressure, and obtain bisphenol A di Glycidyl ether monoacrylate;

[0055] 2. Synthesis of styrene-bisphenol A diglycidyl ether monoacrylate copolymer

[0056] Add 3.03g of styrene and 0.5g of bisphenol A diglycidyl ether monoacrylate to 10ml of tetrahydrofuran, add 0.03g of azobisisobutyronitrile, blow nitrogen, and stir the reaction at 68°C for 30 hours. Precipitate with water volume ratio of 2:8, filter with suction, dissolve the precipitate with acetone, precipitat...

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Abstract

The invention discloses a preparation method of the super-hydrophobic surface of a copolymer graft hollow silicon dioxide pellet. The copolymer is a styrene-bisphenol A diglycidyl ether monoacrylate copolymer, and is prepared by virtue of synthesis of bisphenol A diglycidyl ether monoacrylate and synthesis of styrene-bisphenol A diglycidyl ether monoacrylate copolymer, wherein the mass ratio of styrene to bisphenol A diglycidyl ether monoacrylate is (6-4):1; epoxy groups in the copolymer can be grafted with the hollow silicon dioxide pellet with amino groups and also can be cured with an epoxy resin curing agent, and good adhesion can be formed with a base material; the prepared hollow silicon dioxide pellet is 50-60 nm in particle diameter and 5-10 nm in wall thickness; moreover, the obtained super-hydrophobic surface is high in mechanism strength, resistant to aging, resistant to acid and alkali, resistant to corrosion and better in transparency.

Description

technical field [0001] The invention relates to an organic / inorganic nanocomposite material, in particular to a method for preparing a superhydrophobic surface of an organic-inorganic nanocomposite material, and belongs to the technical field of surface chemistry. Background technique [0002] The contact angle between the water droplet and the surface is greater than 150 o , the inclination angle is less than 10 o , the surface is called a superhydrophobic surface. Two strategies are often used to prepare superhydrophobic surfaces: one is to modify low surface energy substances on rough surfaces, and the other is to construct rough structures on the surface of hydrophobic materials. The research on superhydrophobic surfaces has undergone considerable development, and various preparation methods have been born, but most of them are limited in application due to the insufficient strength of the prepared surface. [0003] Chinese Invention Patent Publication No. CN102140179...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D187/00C08G83/00C08F212/08C08F220/32
Inventor 刘伟良刘金秋徐文华何东新
Owner QILU UNIV OF TECH
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