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Preparation method of super-amphiphobic long-lived coating of waterborne system

A super-amphiphobic durable, water-based system technology, applied in coatings, anti-corrosion coatings, etc., can solve the problems of organic solvent pollution recovery, inconvenience, poor durability of super-amphiphobic coatings, etc. Fast loading effect

Active Publication Date: 2019-01-18
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems of poor durability of current super-amphiphobic coatings, environmental pollution by organic solvents and inconvenient recycling, and provides a method for preparing durable super-amphiphobic coatings on solid surfaces by using spraying technology

Method used

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  • Preparation method of super-amphiphobic long-lived coating of waterborne system
  • Preparation method of super-amphiphobic long-lived coating of waterborne system
  • Preparation method of super-amphiphobic long-lived coating of waterborne system

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Embodiment 1

[0029] In this embodiment, the base material is cotton cloth, and the preparation method of coating superamphiphobic coating on cotton cloth is carried out as follows:

[0030] (1) Cleaning the surface of the cotton cloth to obtain a treated base material.

[0031] (2) in PVDF emulsion (10g, solid content is 14%, and particle diameter is 220nm), add heptadecafluorodecyltriethoxysilane (2g), surfactant Zonyl 321 (3g, DuPont company product) carry out 0.5 After 1 hour of stirring and mixing, 50 grams of water was added and stirred evenly (stirring time was 1 hour), and a composite modified emulsion of polymer particles was obtained.

[0032] (3) Immerse the surface of the substrate obtained in (1) into the polymer particle modified emulsion obtained in (2) for 5 minutes, dry at room temperature for 10 minutes, and then put the substrate in a 130 ° oven for drying heat treatment In 1 hour, a durable superamphiphobic coating with a thickness of 700 nm can be obtained.

[0033] S...

Embodiment 2

[0043] In this embodiment, filter paper is selected as the base material, and the preparation method of coating superamphiphobic coating on the filter paper is carried out as follows:

[0044] (1) cleaning the surface of the filter paper to obtain a processed base material;

[0045] (2) in PVDF emulsion (10g, solid content is 14%, and particle diameter is 220nm), add heptadecafluorodecyltriethoxysilane (2g), surfactant Zonyl 321 (3g, DuPont company product) carry out 0.5 After 1 hour of stirring and mixing, 50 grams of water was added and stirred evenly (stirring time was 1 hour), and a composite modified emulsion of polymer particles was obtained.

[0046] (3) Spray the polymer particle modified emulsion obtained in (2) onto the substrate surface obtained in (1) for 5 minutes, dry at room temperature for 10 minutes, and then put the substrate in a 130 ° oven for drying heat treatment 1 Durable superamphiphobic coatings with a thickness of 700 nm can be obtained within hours....

Embodiment 3

[0053] In this embodiment, the substrate material is wood, and the coating preparation method of coating super amphiphobic on wood is carried out as follows:

[0054] (1) cleaning the wood surface to obtain a good base material;

[0055] (2) in PVDF emulsion (10g, solid content is 14%, and particle diameter is 220nm), add heptadecafluorodecyltriethoxysilane (2g), surfactant Zonyl 321 (3g, DuPont company product) carry out 0.5 After 1 hour of stirring and mixing, 50 grams of water was added and stirred evenly (stirring time was 1 hour), and a composite modified emulsion of polymer particles was obtained.

[0056] (3) Spray the polymer particle modified emulsion obtained in (2) onto the substrate surface obtained in (1) for 5 minutes, dry at room temperature for 10 minutes, and then put the substrate in a 130 ° oven for drying heat treatment 1 Durable superamphiphobic coatings with a thickness of 700 nm can be obtained within hours.

[0057] Simultaneously, the present inventi...

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Abstract

The invention provides a preparation method of a super-amphiphobic long-lived coating of a waterborne system. The method comprises the following steps: placing a seed emulsion into a vessel, adding fluoroalkyl silane and a surfactant, and carrying out stirring at room temperature for 0.5-1 h; next, carrying out dispersion in water to obtain an emulsion; then, spraying the emulsion on the surface of a base material, wherein the spraying thickness is 200-800 nm; and then, carrying out heating at 125-135 DEG C for 0.5-2 h to obtain the super-amphiphobic coating. The super-amphiphobic coating is directly prepared from an industrial product emulsion; and compared with a method in which nanoparticles are used, the preparation method is simple in operation, and the prepared super-amphiphobic coating is better in dispersion and stable in performance.

Description

technical field [0001] The invention belongs to the field of super-amphiphobic coatings, in particular to a method for preparing a water-based super-amphiphobic durable coating. Background technique: [0002] Superamphiphobic surfaces refer to their water and oil contact angles (CA) greater than 150° and sliding angles (SA) less than 10°, and they possess interesting non-stick, self-cleaning, and antifouling functions. From previous studies, we can know that the superhydrophobic and superoleophobic properties of the material surface are mainly attributed to the micro / nano-rough structure of the surface and the low surface energy of the surface. On the basis of this theory, many methods for preparing superhydrophobic and superoleophobic surfaces have been reported by constructing an appropriate rough structure on the surface of the material and endowing it with low surface energy, such as: plasma etching method, phase separation method , Layer-by-layer self-assembly method, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/16C09D127/18C09D183/08C09D5/00C09D5/08
CPCC09D5/00C09D5/08C09D127/16C09D127/18C09D183/08C08L83/08
Inventor 潘明旺赵丹丹袁金凤张广林
Owner HEBEI UNIV OF TECH
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