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A preparation method for a stable super-amphiphobic coating with dual repair functions of micro-nano structure and chemical composition

A technology of chemical composition and nanostructure, used in coatings, wax coatings, epoxy resin coatings, etc., can solve the problems of inability to large-scale preparation and application, complicated preparation methods, etc., and achieve excellent super-amphiphobic performance and excellent aging resistance. performance, effect of excellent mechanical stability

Active Publication Date: 2021-07-13
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of self-healing coating can only repair surface chemical composition damage or microstructural damage
Secondly, the preparation methods of most microstructure self-healing materials are often complicated, requiring special instruments and equipment, and cannot be prepared and applied on a large scale

Method used

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  • A preparation method for a stable super-amphiphobic coating with dual repair functions of micro-nano structure and chemical composition
  • A preparation method for a stable super-amphiphobic coating with dual repair functions of micro-nano structure and chemical composition
  • A preparation method for a stable super-amphiphobic coating with dual repair functions of micro-nano structure and chemical composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Preparation of the structural memory bonding layer: Melt 8.9g of microcrystalline wax at 60°C, then add 0.2g of sodium dodecylbenzenesulfonate, and stir for 30 minutes to obtain a microcrystalline wax emulsion; take 22.5g Bisphenol A diglycidyl ether, preheat at 40°C for 30 minutes to make it have good fluidity, then add 22.5g of methyl hexahydrophthalic anhydride, 0.5g of carbon nanotubes and 14.2ml of benzyl alcohol, and stir for 1h Obtain the epoxy resin mixture; and add the epoxy resin mixture dropwise into the microcrystalline wax emulsion to form a uniform structure memory adhesive layer dispersion; finally, the dispersion is bar-coated on the pretreated aluminum alloy substrate The surface of the material is made into a structural memory adhesive layer;

[0044] (2) Preparation of epoxy resin microspheres / fluorinated halloysite nanotubes@repair factor sustained-release microcapsule dispersion: Add 2.5g of perfluorodecyltriethoxysilane to 200ml of ethanol solu...

Embodiment 2

[0048] (1) Preparation of the structural memory bonding layer: Melt 5.5g of microcrystalline wax at 80°C, then add 0.2g of sodium dodecylbenzenesulfonate, and stir for 10 minutes to obtain a microcrystalline wax emulsion; take 27.5g Bisphenol A diglycidyl ether, preheated at 60°C for 30 minutes to make it have better fluidity, then add 17.5g of dodecyl maleic anhydride, 0.5g of graphene and 14.1ml of toluene, and stir 1h, get the epoxy resin mixture, and drop the obtained epoxy resin mixture into the microcrystalline wax emulsion to form a uniform structure memory adhesive layer dispersion; finally scrape the dispersion onto the pretreated The surface of the magnesium alloy substrate is used to prepare a structural memory bonding layer;

[0049] (2) Preparation of epoxy resin microspheres / fluorinated halloysite nanotubes@repair factor sustained-release microcapsule dispersion: Add 2.5g of perfluorodecyltriethoxysilane to 250ml of ethanol solution with pH 5 , and stirred at ro...

Embodiment 3

[0053] (1) Preparation of the structural memory bonding layer: Melt 7.8g of microcrystalline wax at 80°C, then add 0.2g of sodium lauryl sulfate, and stir for 15 minutes to obtain a microcrystalline wax emulsion; take 19.8g of bis Phenol A diglycidyl ether, preheated at 60°C for 30 minutes to make it have good fluidity, then add 9.9g of methyl hexahydrophthalic anhydride, 0.5g of nano silicon dioxide and 13.2ml of p-xylene, and stir 1h, to obtain the epoxy resin mixture; and the epoxy resin mixture is added dropwise to the microcrystalline wax emulsion to form a uniform structure memory adhesive layer dispersion; finally, the dispersion is bar-coated on the pretreated tinplate The surface of the substrate to prepare a structural memory adhesive layer;

[0054] (2) Preparation of epoxy resin microspheres / fluorinated halloysite nanotubes@repair factor sustained-release microcapsule dispersion: Add 6.5g of perfluorodecyltriethoxysilane to 150ml of ethanol solution with pH 3 , an...

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Abstract

The invention discloses a preparation method of a stable super-amphiphobic coating with dual repair functions of micro-nano structure and chemical composition. The method includes: (1) preparing a structural memory bonding layer composed of epoxy resin A, curing agent A, surfactant, thermoplastic self-repairing body, filler and solvent; (2) preparing epoxy resin by precipitation polymerization Microspheres / fluorinated halloysite nanotubes@repair factor sustained-release microcapsule dispersion, and spray it on the surface of the structural memory bonding layer, heat-cure and cross-link to form a micro-nano structure and chemical composition dual repair function Stabilized superamphiphobic coatings. The super-amphiphobic coating prepared by the invention not only has excellent super-amphiphobic properties and mechanical stability, but also has dual repair functions of micro-nano structure and surface chemical composition. The invention also has the advantages of simple process, low cost, large-scale preparation and the like, and is easy to be applied industrially.

Description

technical field [0001] The invention relates to a method for preparing a stable super-amphiphobic coating, in particular to a method for preparing a stable super-amphiphobic coating with double repair functions of micro-nano structure and chemical composition, belonging to the technical field of super-amphiphobic coating preparation . Background technique [0002] Super-amphiphobic coating refers to a special wettability coating in which water and low surface energy droplets maintain a contact angle higher than 150° and a rolling angle lower than 10° on its surface. It has excellent self-cleaning properties, Anti-fouling, anti-icing, anti-bacterial and anti-corrosion properties can be widely used in various aspects of production and life such as automobiles, construction, agriculture, military, etc. It is a new material with great development potential. The common preparation methods of super-amphiphobic coatings are mainly achieved by constructing micro-nano-scale rough st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/02C09D191/06C09D7/62B05D7/26B05D7/00
CPCB05D7/26B05D7/544B05D7/546C08K2201/011C08L2201/08C09D163/00C09D7/62C09D7/70C08L91/06C08K9/10C08K9/06C08K7/26
Inventor 李步成张俊平魏晋飞杨燕飞李凌霄
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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