Graphene modified heat-radiation-corrosion resistant fluorocarbon functional coating and preparation method thereof

A graphene modification, functional coating technology, applied in anti-corrosion coatings and other directions, to achieve excellent abnormal temperature curing, improve heat dissipation, and excellent overall performance.

Inactive Publication Date: 2018-02-02
FOSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are relatively few applications of graphene and its composite materials in the field of coatings, especially the compatibility of graphene and polymers is one of the key issues restricting the application of graphene in the field of coatings.

Method used

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  • Graphene modified heat-radiation-corrosion resistant fluorocarbon functional coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Preparation of functionalized graphene dispersion:

[0029] (1) Acyl chloride of graphene oxide:

[0030] First, add graphene oxide to an appropriate amount of water to prepare a solution with a concentration of 10g / L, and shake the solution to make ultrasonic dispersion for 40-60min to obtain a graphene oxide aqueous dispersion with a concentration of 10g / L;

[0031] Next, take 50 mL of graphene oxide aqueous dispersion and heat it to 45°C, then add 0.5 g of monochloroacetic acid, 0.5 g of sodium hydroxide and 15 g of ethanol, and stir for 30 min to react the carboxyl groups on the graphene oxide by esterification Converted to an acid chloride group to form a primary reactant;

[0032] (1) amidation of graphene oxide: 3 g of cetyl trimethyl ammonium bromide is added to the primary reactant to convert the acid chloride group generated on the graphene oxide into an amide, thereby generating a stable covalent bond Functionalized graphene dispersion;

[0033] (2) Emu...

Embodiment 2

[0043] Example 2: The difference from Example 1 is that: when preparing the functionalized graphene dispersion, a graphene oxide aqueous dispersion with a solubility of 20 g / L was prepared.

Embodiment 3

[0044] Embodiment 3: First, weigh each component according to the following formula: water-based FEVE fluorocarbon resin emulsion 45g, polymethyl methacrylate emulsion 5g, functionalized graphene dispersion 15mL in Example 1, radiation-type inorganic substance 5g , 16g of pigments and fillers, 14.5g of additives, 15g of deionized water;

[0045] The radiation type inorganic substance is indium tin oxide (ie: ITO, wherein the mass ratio of indium oxide and tin oxide is In 2 O 3 :SnO 2 =9:1);

[0046]8g montmorillonite and 8g rutile titanium dioxide are used as pigments and fillers;

[0047] The auxiliary agent is 0.5g polyether defoamer (such as GPE), 1g polycarboxylate sodium salt type dispersant (such as SN-5040), and 1g wetting agent (ie: sulfonic acid anionic surfactant, such as SN WET991) , 3g polyvinyl alcohol thickener (such as PEG800 or PEG600), 1g film forming agent (ie: dodecyl alcohol ester), 3g antifreeze agent (ie: propylene glycol) and 5g PH regulator (such as...

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Abstract

The invention relates to the technical field of functional coatings, in particular to a graphene modified heat-radiation-corrosion resistant fluorocarbon functional coating and a preparation method thereof. The graphene modified heat-radiation-corrosion resistant fluorocarbon functional coating comprises the following components in parts by weight: 20-45 parts of an aqueous FEVE fluorocarbon resinemulsion, 5-25 parts of a polymethyl methacrylate emulsion, 5-20 parts of a functional graphene dispersion, 5-10 parts of radiation type inorganic matters, 10-35 parts of pigment packing, 5-10 partsof aids and 10-35 parts of deionized water. According to the coating, the aqueous FEVE fluorocarbon resin emulsion and the polymethyl methacrylate emulsion are adopted as main filming substances, thecompatibility of the graphene with a resin substrate is improved through modification of the graphene, and thus functions of heat radiation and corrosion resistance of the graphene in a coating systemare brought into play; meanwhile, due to adoption of the radiation type inorganic matters, the heat radiation property of a coating membrane can be further improved; the prepared coating has the characteristics of being good in heat radiation, excellent in corrosion resistance, good in comprehensive property and environmentally friendly, and has good social and economic benefits.

Description

technical field [0001] The invention relates to the technical field of functional coatings, in particular to a graphene modified heat dissipation-anticorrosion fluorocarbon functional coating and a preparation method thereof. Background technique [0002] As we all know, graphene has shown great potential and application prospects in various fields because of its unique properties, and it has become a hot spot of scientific research at home and abroad. However, there are relatively few applications of graphene and its composite materials in the field of coatings, especially the compatibility of graphene and polymers is one of the key issues that restrict the application of graphene in the field of coatings. SUMMARY OF THE INVENTION [0003] In view of the above-mentioned deficiencies in the prior art, one of the objects of the present invention is to provide a graphene modified heat dissipation-anticorrosion fluorocarbon functional coating; another object of the present in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/12C09D133/12C09D5/08C09D7/61C09D7/62
CPCC08K2003/2231C08K2201/014C08L2205/035C09D5/08C09D127/12C08L33/12C08K13/06C08K9/04C08K3/04C08K3/22C08K3/2279
Inventor 叶秀芳陈东初余钢樊婷
Owner FOSHAN UNIVERSITY
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