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An integrated wear-resistant fluorine-silicon-based superamphiphobic coating on the bottom surface and its preparation method and application

A super-amphiphobic, fluorosilicon technology, used in coatings, anti-corrosion coatings, etc., can solve the problems of complex preparation process, cumbersome maintenance process, poor wear resistance, etc. Effect

Active Publication Date: 2020-10-16
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problems of poor wear resistance, complex preparation process, high cost and cumbersome maintenance process of the super-amphiphobic coating in the above-mentioned prior art, a method of synergistically modified blended particles for fluorine-silicon-based super-amphiphobic coating is provided. In the preparation method, different kinds of nanoparticles are added to the resin in the form of blending nano-modified particles, which can balance the unfavorable factors of various nanoparticles, and can give full play to the respective advantages of nanoparticles, and can greatly increase the amount of nanoparticles added. Improve the microscopic rough structure of the coating, improve the hydrophobicity, oleophobicity, chemical stability, weather resistance, corrosion resistance and oxidation resistance of the coating

Method used

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  • An integrated wear-resistant fluorine-silicon-based superamphiphobic coating on the bottom surface and its preparation method and application
  • An integrated wear-resistant fluorine-silicon-based superamphiphobic coating on the bottom surface and its preparation method and application
  • An integrated wear-resistant fluorine-silicon-based superamphiphobic coating on the bottom surface and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Example 1: Integrated wear-resistant fluorosilicone base-micro-nano SiO on the bottom surface 2 Preparation process of super amphiphobic coating

[0078] 1. Synergistic modification of micro-silica and nano-silica to obtain modified blended micro-nano SiO 2 particle.

[0079] (1) Preparation of blended ball-milled micro-nano powder: Weigh a certain amount of micron-sized SiO 2 with nanoscale SiO 2 The two kinds of particles are placed in a mixer and mixed evenly, and then placed in a planetary ball mill for 2 hours to obtain a blended ball-milled micro-nano powder.

[0080] (2) Pre-dispersion of blended micro-nano particles: Dissolve the blended ball-milled micro-nano powder in absolute ethanol, shear and disperse at a rate of 6krpm for 20min, switch to a low-speed mechanical stirring rate of 500rpm, add a small amount of surfactant DNS- 86, stirring for 20min.

[0081] (3) Pre-hydrolysis of the coupling agent: Dissolve dodecafluoroheptylpropyltrimethoxysilane in a...

Embodiment 2

[0094] Example 2: Integrated wear-resistant fluorosilicon-nano TiO on the bottom surface 2 -SiO 2 Preparation process of super amphiphobic coating

[0095] 1. Nano-TiO 2 with nano-SiO 2 Synergistic modification treatment to obtain modified TiO 2 -SiO 2 Nanoparticles

[0096] (1) Preparation of blended ball-milled micro-nano powder: Weigh a certain amount of nano-scale silicon dioxide and nano-scale titanium dioxide particles, mix them evenly in a mixer, and then place them in a planetary ball mill for 2 hours to obtain Blending and ball milling micro-nano powder. Nanoscale TiO 2 with nanoscale SiO 2 The weight ratio between particles is 1:2.

[0097] (2) Pre-dispersion of blended micro-nano particles: Disperse the blended ball-milled micro-nano powders in absolute ethanol, shear and disperse at a rate of 8krpm for 30min, switch to a low-speed mechanical stirring rate of 600rpm, add a small amount of surfactant DNS- 86, stirring for 25min.

[0098] (3) Pre-hydrolysis...

Embodiment 3

[0109] Example 3: Integrated wear-resistant fluorosilicon-nano-Al on the bottom surface 2 o 3 -SiO 2 Preparation process of super amphiphobic coating

[0110] 1. Nano Al 2 o 3 with nano-SiO 2 Synergistic modification treatment to obtain modified Al 2 o 3 -SiO 2 Nanoparticles

[0111] (1) Preparation of blended ball-milled micro-nano powder: take a certain amount of two kinds of particles of nano-scale silicon dioxide and nano-scale alumina, place them in a mixer and mix them evenly, place them in a mixer and mix them evenly, and then Place it in a planetary ball mill for ball milling for 2 hours to obtain a blended ball milled micro-nano powder. Nanoscale Al 2 o 3 with nanoscale SiO 2 The weight ratio between particles is 3:1.

[0112] (2) Pre-dispersion of blended micro-nano particles: Disperse the blended ball-milled micro-nano powders in absolute ethanol, shear and disperse at a rate of 8krpm for 30min, switch to a low-speed mechanical stirring rate of 600rpm, ...

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Abstract

The invention discloses an integrated wear-resistant fluorosilicone-based superamphiphobic coating on the bottom surface and its preparation method and application, comprising the following steps: 1) synergistic modification treatment of two or more kinds of nanoparticles to obtain modified blending Particles; 2) Add the blended modified nanoparticles into the dispersing solvent, ultrasonically disperse for 1‑2h, and then mechanically stir; 3) Add a certain amount of tert-butyl acetate to the fluorosilicone resin for shear dispersion to obtain the base material emulsification 4) mixing the blended modified nanoparticle suspension in step 2 and the base material emulsion in step 3, adding a coupling agent, heating and stirring to disperse, and then using a high-speed shear disperser to disperse to obtain Super-amphiphobic coating; 5) Stir the super-amphiphobic coating evenly, spray it on the surface of the object, and dry it at room temperature for 10-30 minutes to successfully prepare the wear-resistant integrated super-amphiphobic coating. The invention is a superamphiphobic organic-inorganic hybrid coating formed by connecting a fluorosilicon substrate and a blended modified particle through a chemical graft copolymerization reaction.

Description

technical field [0001] The invention belongs to the field of preparation of super-amphiphobic coatings, and in particular relates to a bottom integrated wear-resistant fluorine-silicon-based super-amphiphobic coating and a preparation method and application thereof. Background technique [0002] Superhydrophobic coating refers to coating one or more layers of superhydrophobic materials on a solid surface to have a high water contact angle (>150°) and a low rolling angle (<10°) to achieve its anti-corrosion, waterproof and Anti-icing and other functions. Due to its excellent hydrophobicity, the super-hydrophobic coating is coated on the outside of metal components, which reduces the surrounding water vapor and can achieve anti-corrosion functions; in the case of freezing rain and snowfall, the super-hydrophobic surface maintains a non-icing state or reduces the adhesion of the ice layer. Focusing on preventing or delaying the icing of transmission lines and preparing s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/62C09D183/08C09D5/08
CPCC08K3/36C08K9/06C08K2003/2227C08K2003/2241C08K2201/011C08K2201/014C09D5/08C09D183/08
Inventor 宗立君吴亚平李辛庚米春旭王晓明郭凯张振岳李文静闫风洁王蝶樊志彬
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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