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Graphene coating and preparation method thereof

A technology of graphene and coatings, applied in the field of coatings, can solve problems such as impact resistance, antistatic, anti-corrosion, etc.

Inactive Publication Date: 2021-06-25
尤纪超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it does not solve the effects of impact resistance, antistatic, anticorrosion, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0064]The preparation method of graphene in the embodiment comprises the following steps: 50mL of concentrated sulfuric acid is placed in a four-necked flask, 2.0g of graphite powder and 1.0g of sodium nitrate are added under ice-bath conditions, and stirring is continued at 300rpm for 15min; Potassium manganate powder, and control the temperature of the system at 8°C, stirring at 300rpm for 15min; remove the ice bath, raise the temperature of the system to 35°C for 30min, then add 100mL of water, then raise the temperature to 98°C, and keep it for 30min; Add 300mL of water, then add 30% hydrogen peroxide solution to remove excess potassium permanganate until the reaction solution turns golden yellow, filter while hot, and wash the filter cake with 5wt% hydrochloric acid solution and water until the pH of the filtrate=7 ;Finally, the filter cake is dried in a vacuum oven to obtain graphene oxide; 0.5g graphene oxide and 500mL water are added to a round bottom flask, ultrasonica...

Embodiment 1

[0070] A preparation method for a coating, comprising the steps of: 45 parts by weight of polyurethane, 15 parts by weight of 4-nitro-N-(3-triethoxysilylpropyl) benzamide, 12 parts by weight of N- (3-trimethoxysilylpropyl) pyrrole, 27 parts by weight p-hydroxyphenyl acrylic acid, 11 parts by weight methyl p-hydroxycinnamate, 8 parts by weight monobutyl ether, 8 parts by weight cinnamaldehyde grafted tapioca starch, 23 parts by weight Parts of inorganic flame retardant, 3 parts by weight of ricinoleic acid amide MEA, 8 parts by weight of 2,3-butanediol, 2 parts by weight of leveling agent, 3 parts by weight of thickener, 0.8 parts by weight of coupling agent, 0.7 parts by weight Parts of antifoaming agent and 43 parts by weight of deionized water were mixed and homogenized at 85° C. for 4 minutes at a speed of 14,000 rpm to obtain a coating.

[0071] The preparation method of the monobutyl ether is as follows: mixing ethylene glycol monobutyl ether and tetraethylene glycol mono...

Embodiment 2

[0083] Substantially the same as Example 1, the difference is only: the preparation method of the cinnamaldehyde grafted tapioca starch is:

[0084] K1 Mix tapioca starch, sodium hypochlorite, and hydrogen peroxide in a mass ratio of 3.2:0.6:8 and stir at 70°C at a speed of 100rpm for 3h, then dry at 85°C and an air pressure of 65kPa for 6h, and pass through an 80-mesh sieve after crushing. Obtain oxidized tapioca starch;

[0085] K2 Mix sodium pentachlorophenate, cinnamaldehyde, 2,2',6-tribromo-indophenol sodium, 2-hydroxyquinoline, and n-octane in a mass ratio of 2.3:1.9:3.5:1.7:19.8 and heat at 110°C Homogenized treatment at a speed of 13000 rpm for 7 minutes to obtain a modified liquid; the cinnamaldehyde is α-bromocinnamaldehyde;

[0086] K3 Mix the oxidized tapioca starch, modified liquid, and aqueous sodium sulfate solution with a concentration of 21wt.% at a mass ratio of 1:1.6:5 at 50°C and homogenize them at a speed of 13,000 rpm for 2 minutes, and then energize the...

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Abstract

The invention provides a graphene coating and a preparation method thereof. The graphene coating is mainly prepared from polyurethane, 4-nitro-N-(3-triethoxysilylpropyl) benzamide, N-(3-trimethoxysilylpropyl) pyrrole, p-hydroxyphenylacrylic acid, methyl p-hydroxycinnamate, ethylene glycol monobutyl ether, tetraethylene glycol monobutyl ether, cinnamyl aldehyde grafted cassava starch and graphene / modified graphene. Graphene in the prepared graphene coating is good in dispersity, firm in combination and not prone to falling off, meanwhile, graphene interacts with other substances to form a complex net-shaped structure, and meanwhile the graphene coating has good antistatic performance and impact resistance. The whole preparation process is simple, the cost is low, no environmental pollution is caused in the production process, and the quality is stable.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a graphene coating and a preparation method thereof. Background technique [0002] Graphene is a two-dimensional sheet structure material composed of carbon atoms. Its structure is similar to graphite, and it is a two-dimensional honeycomb hexagonal crystal structure. Since there are only C-C covalent bonds with a bond length of 0.142nm in graphene, the structure is stable and has excellent flexibility, so graphene has light weight, high lightness, good electrical and thermal conductivity, good light transmission and Good thermal stability and so on. As one of the most eye-catching new materials in the 21st century, graphene is bringing revolutionary changes to society, and the global research enthusiasm continues to heat up. The application of graphene also draws a colorful picture. [0003] Paint is a multi-component mixture, generally composed of film-forming substances, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/06C09D4/02C09D5/14C09D7/61C09D7/63C09D7/62
CPCC09D4/06C09D5/14C09D7/61C09D7/62C09D7/63
Inventor 尤纪超
Owner 尤纪超
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