A water-based wear-resistant super amphiphobic nanocomposite coating and its preparation method

A nano-composite coating, super-amphiphobic technology, applied in coatings, fire-retardant coatings, polyurea/polyurethane coatings, etc. layer roughness, enhanced superoleophobic effect, good application prospects

Active Publication Date: 2021-11-02
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Technical problem to be solved: In order to expand the application of water-based super-hydrophobic coatings in real life, the present invention provides a water-based wear-resistant super-amphiphobic nanocomposite coating for the problems of poor wear resistance, super-oleophobicity and wear resistance. Layers and methods of making them

Method used

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  • A water-based wear-resistant super amphiphobic nanocomposite coating and its preparation method
  • A water-based wear-resistant super amphiphobic nanocomposite coating and its preparation method
  • A water-based wear-resistant super amphiphobic nanocomposite coating and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Ultrafiltration amphiphobic silica nanoparticles Powder: A mixture of 6 parts of aqueous ammonia solution is dispersed in 80 parts of absolute ethanol, at a rotation speed 200rpm conditions, stirred at 50 ℃ 4min, followed by addition of 10 parts of compound silica, stirring was continued for 10min after addition of 0.2 parts of tetraethyl orthosilicate, stirring was continued for 30min, was added 0.2 parts of tridecafluorooctyl trimethoxysilane, stirring 2h placed on a rotary evaporator, rotated at 60 ℃ evaporated 60min, then placed over the particles hydrophobic silica nanoparticles bis powder freeze drier -80 ℃ freeze dried 6 h, can be obtained;

[0023] Preparation of nanocomposite amphiphobic coating (2) over an aqueous wear resistant: 1 parts of the hydrophobic silica particles are ultra-bis powder dispersed in a heterogeneous parts hexadecane at a rotation speed 200rpm conditions, 4min at room temperature with stirring, followed by after addition of 15 parts of de...

Embodiment 2

[0027](1) Preparation of superbish silica nanoparticle powder: 6 parts of aqueous ammonia solution was dispersed in 80 parts of anhydrous ethanol solution, and at a speed of 200 rpm, stirred at 50 ° C for 4min, then add 10 copies. Silica sol, followed by stirring for 10 min, add 0.2 parts of n-ethyl silicate, continued for 30 min, add 0.2 parts of thirtexluoromethyltrimethoxysilane, and stirred in a rotary evaporator after stirring, rotate at 60 ° C. 60 min was evaporated, then the particles were placed in a freeze dryer - 80 ° C for 6 h, that is, ultra-double silica nanoparticle powder is obtained;

[0028] (2) Preparation of aqueous abrasion-resistant ultrachoxienm composite coating: 1 part of the superblicit silica particulate powder is dispersed in 1 parts of air kerosene, and at a speed of 200 rpm, the mixture is stirred at room temperature for 4 min, then add 20 parts. Deionized water, then add 0.1 parts of aqueous anionic fluorocarbon surfactant, stirred for 10 min, add 2 p...

Embodiment 3

[0032] (1) Preparation of superbish silica nanoparticle powder: 6 parts of aqueous ammonia solution was dispersed in 80 parts of anhydrous ethanol solution, and at a speed of 200 rpm, stirred at 50 ° C for 4min, then add 10 copies. Silica sol, continued to stir after 10min and add tetraeth ester, continued to stir for 30 min, add 0.2 parts of hexadalkyltrimethoxysilane, stir for 2 h, was placed in a rotary evaporator, rotate under 60 ° C. Evaporation 60min, then place the particles in a freeze dryer - 80 ° C for 6 h, to obtain ultra-double silica nanoparticle powder;

[0033] (2) Preparation of aqueous abrasion-resistant superbrochrometric composite coating: 1 part of the superblicic silica particulate powder was dispersed in 1 part of heterozose, and at a speed of 200 rpm, stirred at room temperature for 4 min, then 15 parts of deionized water were added, and then 0.1 parts aqueous anionic fluorocarbon surfactant was added, and 1.5 parts of water-based melamine formaldehyde resin...

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Abstract

A water-based wear-resistant super-amphiphobic nano-composite coating and a preparation method thereof, first preparing super-amphiphobic silica nanoparticle powder; then preparing a water-based wear-resistant super-amphiphobic nano-composite coating; finally preparing a super-amphiphobic coating . The invention adopts conventional raw materials such as fluorosilane, water-based silica sol, and water-based resin to prepare water-based wear-resistant superamphiphobic nanocomposite coatings without any toxic organic solvents, avoiding the residue of toxic substances or incomplete treatment from the source, and meeting environmental protection requirements. requirements and reduce production costs. The water-based wear-resistant super-amphiphobic nano-composite coating prepared in the water-based system is non-combustible and low in VOC. It is suitable for many harsh occasions such as poor ventilation, high temperature, and open flames. It is convenient for production, storage, transportation and construction operations, and has good performance. application prospects. In the preparation of the superamphiphobic silica nanoparticle powder, the composite silica sol can be used to obtain nanoscale agglomerated nanoparticles, increase the roughness of the nanoparticles, and thus increase the roughness of the coating.

Description

Technical field [0001] The present invention is in the field of preparing coating, it relates to a nanocomposite amphiphobic coating and its preparing an aqueous super abrasion. Background technique [0002] Super hydrophobic surface due to its special surface wettability it important applications in many fields the self-cleaning, anti-icing, anti-fogging, anti-corrosion, green print, and other sensors and water are separated. Wherein the aqueous superhydrophobic coatings due to the use of ethanol, acetone, chloroform and other organic solvents, the preparation process is simple, low cost, and the like for large scale fabrication of characteristics received much attention. However, existing water-based superhydrophobic problem areas are: poor wear resistance, can not exceed oleophobic, or both can not be taken into account, these shortcomings greatly limit the use of water-based superhydrophobic coating. [0003] Currently used to improve the aqueous oleophobic superhydrophobic c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/12C09D175/04C09D161/28C09D133/04C09D7/62C09D7/20C09D5/18C09D183/08B05D7/00B05D7/24
CPCB05D7/24B05D7/542B05D2451/00C08G77/24C08K2201/011C09D4/00C09D5/18C09D127/12C09D133/04C09D161/28C09D175/04C09D183/08C09D7/20C09D7/62C08K9/06C08K3/36B05D2506/10B05D2420/01B05D2425/02B05D2503/00B05D2518/00B05D2502/00B05D2518/10B05D2420/02B05D2425/01
Inventor 张友法杨永玲余新泉
Owner SOUTHEAST UNIV
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