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Preparation method for carboxylated polystyrene-silicon dioxide composite super-hydrophobic coating

A polystyrene and silica technology, applied in coatings and other directions, can solve the problems that large-area film formation cannot be achieved, limit the wide application of super-hydrophobic coatings, etc., and achieve good self-cleaning, simple preparation process, and repeatability. Good results

Inactive Publication Date: 2014-04-09
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to existing reports, many preparations of superhydrophobic surfaces need to be carried out under strict laboratory equipment and complex process control conditions, and large-area film formation cannot be achieved, thus limiting the wide application of superhydrophobic coatings in the production field.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of polystyrene seed microspheres

[0035] 1g of polyvinylpyrrolidone and 3g of distilled water were added to 40ml of ethanol respectively, stirred evenly at room temperature, and under the protection of nitrogen gas, 0.1g of azobisisobutyronitrile and 9.5g of styrene monomer were added to the above solution respectively. React at 60°C for 10 hours, centrifuge and wash to prepare polystyrene seed microspheres;

[0036] (2) Preparation of carboxyl-modified polystyrene microspheres

[0037] Add 0.5g of polystyrene seed microspheres and 20ml of distilled water to 30ml of ethanol, and then add 0.03g of azobisisobutyronitrile, 0.2g of α-methacrylic acid and 0.1g of styrene under the protection of nitrogen. React at 60°C for 20 hours, dry and grind into powder to obtain polystyrene microspheres with carboxyl groups on the surface;

[0038] (3) Preparation of silica-coated polystyrene particles

[0039] Add 0.05g of carboxylated polystyrene microspheres...

Embodiment 2

[0047] (1) Preparation of polystyrene seed microspheres

[0048] Add 1.5g of polyvinylpyrrolidone and 5.2g of distilled water into 50ml of ethanol respectively, stir evenly at room temperature, under the protection of nitrogen, add 0.15g of azobisisobutyronitrile and 15g of styrene monomer into the above solution respectively, Reaction in a water bath at 70°C for 11 hours, centrifuged and washed to obtain polystyrene seed microspheres;

[0049] (2) Preparation of carboxyl-modified polystyrene microspheres

[0050] 1g of polystyrene seed microspheres and 30ml of distilled water were added to 55ml of ethanol, and under the protection of nitrogen, 0.04g of azobisisobutyronitrile, 0.4g of α-methacrylic acid and 0.2g of styrene were added respectively, at 70 ℃, reacted for 22 hours, dried and ground into powder, and prepared polystyrene microspheres with carboxyl groups on the surface;

[0051] (3) Preparation of silica-coated polystyrene particles

[0052] Add 0.1g of car...

Embodiment 3

[0060] (1) Preparation of polystyrene seed microspheres

[0061] Add 2g of polyvinylpyrrolidone and 8g of distilled water to 100ml of ethanol respectively, stir evenly at room temperature, under the protection of nitrogen gas, add 0.2g of azobisisobutyronitrile and 20g of styrene monomer into the above solution, at 80°C , reacted for 12 hours, centrifuged and washed to obtain polystyrene seed microspheres;

[0062] (2) Preparation of carboxyl-modified polystyrene microspheres

[0063] 1.5g of polystyrene seed microspheres and 40ml of distilled water were added to 80ml of ethanol, and under nitrogen protection, 0.1g of azobisisobutyronitrile, 2g of α-methacrylic acid and 0.9g of styrene were added respectively. At 80°C, react for 24 hours, dry and grind into powder to obtain polystyrene microspheres with carboxyl groups on the surface;

[0064] (3) Preparation of silica-coated polystyrene particles

[0065] Add 0.15g of carboxylated polystyrene microspheres to 250ml...

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Abstract

The invention discloses a preparation method for a carboxylated polystyrene-silicon dioxide composite super-hydrophobic coating. The method is characterized by comprising the steps of: (1) preparing a polystyrene seed microsphere; (2) preparing a carboxyl modified polystyrene microsphere; (3) preparing a silicon dioxide coated carboxylated polystyrene particle; (4) preparing a vinyl modified silicon dioxide coated carboxylated polystyrene particle; (5) preparing a coating sol; and (6) coating a film on a substrate, and taking film out after drying, thus obtaining the carboxylated polystyrene-silicon dioxide composite super-hydrophobic coating. The method provided by the invention has the characteristics of simple preparation process and good repeatability, and the prepared coating has good super-hydrophobicity and self-cleaning performance. Thus, the method is suitable for industrial production of super-hydrophobic coatings.

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 carboxylated polystyrene-silicon dioxide composite superhydrophobic coating. Background technique [0002] Organic / inorganic nanocomposites have good performance characteristics and are widely used in many fields. Due to the excellent mechanical properties of organic / inorganic nanocomposites, it is suitable for wear-resistant materials; its good performance in thermal stability makes organic / inorganic nanocomposites can be used in the production of heat insulation parts; in view of organic / inorganic nano Composite materials have good magnetic properties and barrier properties, which are widely used in electromagnetic stealth and coating modification; organic / inorganic nanocomposites have special electrical properties, making them widely used in electrical appliances, electronics, optoelectronic products, etc. ...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L25/08C08F212/08C08F220/06C08J7/06C08J7/12C08J3/09C08K3/36C09D125/08C09D7/12C09D5/00
Inventor 刘伟良邵光伟柏冲张献姚金水
Owner QILU UNIV OF TECH
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