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Graphene-based coating and application thereof

A graphene-based, graphene-based technology, applied in coatings, anti-corrosion coatings, fire-resistant coatings, etc., can solve the problems of short service life, scarcity of environmentally friendly coatings, unfavorable environmental protection, etc., and achieve good high temperature resistance, simple preparation process, The effect of good water repellency

Inactive Publication Date: 2017-06-23
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Surfaces of marine equipment, sanitary ware, automobiles, building exteriors, etc. are easily polluted by oil, water, dust, organisms, etc., which will affect their appearance or performance. However, there are few researches on anti-adhesion, anti-fouling, and easy-to-clean coatings , especially environmentally friendly coatings are rare
Publication No. 104761934A patent discloses an easy-to-clean coating containing silane coupling agent and nano-silica sol to improve its water repellency and achieve the purpose of easy cleaning, but the coating has insufficient wear resistance and short service life; Publication No. 104559611A The patent discloses an easy-to-clean fluorocarbon paint containing a fluorocarbon resin. Because the fluoride ion radius is small, it has dual characteristics of water and oil repellency, and is suitable for easy-to-clean coatings, but the fluorocarbon resin can only dissolve very little Among organic solvents, it is not conducive to environmental protection
Publication No. 1501965 patent discloses a coating containing fluorine silane and silicon dioxide, etc., but the prepared coating has insufficient adhesion, antistatic property and wear resistance

Method used

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  • Graphene-based coating and application thereof
  • Graphene-based coating and application thereof
  • Graphene-based coating and application thereof

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preparation example Construction

[0010] The graphene-based coating dispersion has a simple preparation process, is suitable for various coating methods, has good controllability, low cost, is environmentally friendly, and is suitable for large-scale application and promotion. Because graphene has the properties of antistatic, wear-resistant, acid and alkali corrosion resistance and high temperature resistance, the graphene-based coating prepared by the graphene-based coating dispersion of the present invention has good antistatic properties, wear resistance and corrosion resistance. Sexuality and long life, high temperature resistance and other characteristics.

[0011] According to the present invention, the ceramic oxide is selected from at least one of silicon dioxide, zirconium dioxide and titanium dioxide; all of them have good wear resistance, corrosion and film-forming properties. Preferably the precursor of the ceramic oxide is selected from ethyl silicate, propyl silicate, butyl silicate, ethyl titan...

Embodiment 1～8

[0022]Add water and 10mg / ml graphene oxide aqueous dispersion to the container, place it in an ultrasonic cleaner for ultrasonic dispersion for 2 hours, stir and disperse for 30 minutes; add 30wt% nano-silica aqueous dispersion, place it in an ultrasonic cleaner for ultrasonic dispersion 2h, stir for 30min; add 10wt% trifluoropropylmethyldichlorosilane aqueous dispersion, stir for 30min; add acetic acid to adjust the pH of the coating dispersion to 4, add 0.01wt% sodium dodecylbenzenesulfonate Surfactant, prepared graphene-based coating dispersion. Among them, the particle size D of graphene 90 50nm, the particle size of nano-silica D 90 5nm. Clean the surface of the copper alloy faucet base, remove oil and oxidizer according to the conventional method, immerse it vertically in the graphene-based coating dispersion, keep it for 10 minutes, take out the graphene-based coating dispersion at a rate of 2cm / min, and put it in 200℃ In a blast drying oven, cure for 4 hours, and pr...

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Abstract

The invention provides a graphene-based coating dispersion, which at least includes graphene or its derivatives, ceramic oxide or its precursor, fluorosilicon monomer or its polymer, water, wherein graphene and its derivatives are selected from graphite at least one of graphene, graphene oxide, graphene quantum dots, graphene oxide quantum dots, graphene microspheres, graphene oxide microspheres, nano-graphene, nano-graphene oxide, and functionalized graphene. The coating prepared by the coating dispersion of the present invention has good water repellency, oil repellency, antistatic property, abrasion resistance, adhesion and corrosion resistance, etc., and can be applied to the surface antifouling of bathroom, marine equipment, automobile, Anti-oil, waterproof, anti-corrosion, anti-wear and other protection. The preparation process of the coating dispersion liquid of the invention is simple, easy to control, low in cost and has broad application prospects.

Description

technical field [0001] The invention belongs to the field of coatings, and relates to graphene-based coating dispersions, coatings and applications thereof. Background technique [0002] Surfaces of marine equipment, sanitary ware, automobiles, building exteriors, etc. are easily polluted by oil, water, dust, organisms, etc., which will affect their appearance or performance. However, there are few researches on anti-adhesion, anti-fouling, and easy-to-clean coatings , especially environmentally friendly coatings are rare. Publication No. 104761934A patent discloses an easy-to-clean coating containing silane coupling agent and nano-silica sol to improve its water repellency and achieve the purpose of easy cleaning, but the coating has insufficient wear resistance and short service life; Publication No. 104559611A The patent discloses an easy-to-clean fluorocarbon paint containing a fluorocarbon resin. Because the fluoride ion radius is small, it has dual characteristics of ...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/24C09D5/08C09D7/12
CPCC09D1/00C09D5/08C09D5/18C09D5/24C09D7/61C09D7/63C09D7/65
Inventor 张易宁陈素晶刘永川张祥昕王维陈远强
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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