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A kind of superhydrophobic powder coating and preparation method thereof

A powder coating and super-hydrophobic technology, applied in powder coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problem of inability to enhance the super-hydrophobic durability of the coating surface, and achieve the effect of enhancing mechanical stability.

Active Publication Date: 2020-10-02
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the hydrophobic durability of the coating surface is affected by both the surface microstructure and chemical composition, if both the microstructure and chemical composition of the coating surface are damaged, only a single repair of the surface microstructure Or the chemical constituents cannot enhance the super-hydrophobic durability of the coating surface

Method used

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  • A kind of superhydrophobic powder coating and preparation method thereof
  • A kind of superhydrophobic powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1. Preparation of functional fillers

[0042] Add 30 parts of mesoporous silica particles into a mixed solution of 5 parts of perfluoropolyether lubricating oil and 10 parts of ethyl acetate, and perform vacuum drying after ultrasonic treatment. Subsequently, the modified particles were uniformly dispersed into a mixed solution of 7 parts of 107 silicone rubber and 30 parts of ethyl acetate, and 10 parts of ethanol was added dropwise under ultrasonic conditions to cause phase separation of the silicone rubber solution. be made of.

[0043] 2. Preparation of superhydrophobic powder coating

[0044] Use a high-speed mixer to physically mix 70 parts of epoxy resin, 2 parts of polytetrafluoroethylene, 25 parts of the above-mentioned functional fillers, 4 parts of dicyandiamide, 1 part of acrylate homopolymer, and 0.5 parts of benzoin, and then use an extruder to It is melt-extruded at 110°C and prepared after tablet crushing and milling.

[0045] 3. Substrate surface pre...

Embodiment 2

[0056] 1. Preparation of functional fillers

[0057] 15 parts of halloysite nanotubes and 10 parts of hollow spheres were added to a mixed solution of 8 parts of fluorosilane and 20 parts of ethyl acetate, and vacuum-dried after ultrasonic treatment. Subsequently, the modified particles were uniformly dispersed into a mixed solution of 5 parts of 704 silicone rubber and 20 parts of ethyl acetate, and 10 parts of methanol was added dropwise under ultrasonic conditions to cause phase separation of the silicone rubber solution, which was filtered and dried. be made of.

[0058] 2. Preparation of superhydrophobic powder coating

[0059] Using a high-speed mixer, 30 parts of epoxy resin, 30 parts of polyester resin, 5 parts of polyvinylidene fluoride, 20 parts of the above-mentioned functional fillers, 5 parts of phenolic hydroxyl resin, 0.5 parts of polysiloxane, 0.8 parts of polyethylene wax, 100 It is prepared by melt extrusion at ℃, cooling and grinding.

[0060] 3. Substrat...

Embodiment 3

[0070] 1. Preparation of functional fillers

[0071] Add 15 parts of nano-micro activated carbon and 15 parts of diatomaceous earth to a mixed solution of 10 parts of long carbon chain perfluoroalkane and 30 parts of ethyl acetate, and perform vacuum drying after ultrasonic treatment. Subsequently, the modified particles were uniformly dispersed into a mixed solution of 10 parts of 104 silicone rubber and 30 parts of ethyl acetate, and 20 parts of ethanol was added dropwise under ultrasonic conditions to cause phase separation of the silicone rubber solution. be made of.

[0072] 2. Preparation of superhydrophobic powder coating

[0073] Using a high-speed mixer, 50 parts of polyurethane resin, 4 parts of perfluoropropylene-ethylene copolymer, 30 parts of the above-mentioned functional filler, 8 parts of blocked isocyanate, 0.8 part of acrylate copolymer, and 0.5 part of benzoin were melted and extruded at 110 ° C, cooled, Made by grinding.

[0074] 3. Metal substrate pretr...

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Abstract

The invention discloses a superhydrophobic powder coating, which includes functional fillers, and is characterized in that the functional fillers include porous particles, low surface energy substances and vulcanized silicone rubber; the preparation method is: adsorbing low surface energy substances on porous The step of obtaining modified porous particles inside the pores of the particles; and the step of wrapping the surface of the modified porous particles with the vulcanized silicone rubber to obtain the functional filler. It solves the problem that the existing superhydrophobic coating surface only enhances the superhydrophobic durability of the coating surface through a single repair chemical composition substance, and the method of the present invention repairs the microstructure and chemical composition substances of the damaged superhydrophobic coating surface at the same time, effectively Improves the hydrophobic durability of the coated surface.

Description

technical field [0001] The invention relates to a superhydrophobic powder coating and a preparation method thereof. Background technique [0002] Superhydrophobic material is a new type of biomimetic material inspired by the "lotus leaf effect" in nature and has excellent hydrophobicity, self-cleaning, anti-corrosion, anti-icing and other properties. It has broad application prospects and great application value in actual production and life. . Through the research on superhydrophobic surfaces in nature, it is found that the preparation of artificial superhydrophobic surfaces needs to meet two basic conditions at the same time: (1) the surface has a multi-level rough structure; (2) the surface has low surface energy substances. Based on the above two points, people have studied and prepared a variety of artificial superhydrophobic surfaces. [0003] However, artificially prepared superhydrophobic surfaces still have problems such as low surface nanostructure mechanical str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/03C09D5/08C09D7/62C09D7/65
CPCC08K2201/011C08L2205/03C08L2205/035C09D5/033C09D5/08C09D163/00C08L27/18C08K9/12C08K9/10C08K7/26C08K7/00C08K3/346C08L27/20C08K3/04
Inventor 汪怀远刘战剑王池嘉朱艳吉
Owner NORTHEAST GASOLINEEUM UNIV
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