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A kind of graphene-sheet conductive mica oil tank electrostatic conductive anti-corrosion coating and preparation method thereof

A technology of anti-corrosion coatings and conductive mica, applied in the direction of conductive coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of low transparency or fullness of the coating, poor adhesion, difficult dispersion, etc., to achieve the reaction process Ease of control, easy formation of conductive pathways, and mild reaction conditions

Active Publication Date: 2020-04-14
NANJING CHANGJIANG PAINT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent whose publication number is CN 101508855 A discloses a kind of water-based graphite conductive coating and its preparation method, and its adhesion is 2-3 grades, but the adhesion is poor; Graphene conductive coating and preparation method thereof, publication number CN104163928A has announced a kind of conductive heat conduction graphene slurry and coating, the conductive filler consumption of two patents is more, causes coating color darker, and the coating transparency or fullness of formation is not good High; Publication No. is that the Chinese patent of CN 102254584 A discloses a kind of universal conductive paste based on graphene filler, utilizes graphene and conductive material phase composite as conductive filler, has good electrical conductivity, but the amount of conductive paste filler is relatively Many, especially the amount of graphene used is high, the cost is high, and there are problems such as difficult dispersion, poor compatibility with resin, and unsatisfactory adhesion.

Method used

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  • A kind of graphene-sheet conductive mica oil tank electrostatic conductive anti-corrosion coating and preparation method thereof
  • A kind of graphene-sheet conductive mica oil tank electrostatic conductive anti-corrosion coating and preparation method thereof

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preparation example Construction

[0035] Preparation of carboxyl-modified graphene

[0036] Put 2.0g of graphene in a 150ml single-necked flask, then pour 50ml of concentrated sulfuric acid, magnetically stir for 5h, ultrasonically oscillate for 4h-5h, then add concentrated nitric acid into the flask (the volume ratio of concentrated sulfuric acid to concentrated nitric acid is 4:1) , Stir magnetically for 30 minutes, transfer to a constant temperature of about 150°C to condense and reflux for 2 hours, take out the mixture, dilute it with ice water, and then filter it repeatedly with a filter membrane with a smaller pore size until the pH is close to 7, and place the filtered product in Dry in a constant temperature drying oven at 50° C. for 8 hours to obtain carboxyl-modified graphene powder, also known as modified graphene (acidification).

[0037] Preparation of graphene grafted with silane coupling agent

[0038] Add 10-20 drops of hydrochloric acid to 50ml of absolute ethanol solution, adjust the pH valu...

Embodiment 1

[0043] The preparation of graphene‐flaky conductive mica oil tank inner wall conductive static anticorrosion coating: 0.5 parts of the above-mentioned modified graphene (acidified), 10 parts of TDI trimer, 20.5 parts of conductive mica, 3 parts of cyclohexanone, xylene 7 parts, 2 parts of n-butanol, 55 parts of epoxy resin, stirred and mixed evenly at room temperature to obtain a light gray paint solution with a solid content of 55.8% (120°C / 1g / 2h) and a viscosity of 120.3s (coated with 4 cups, 25 ℃), the oil tank conductive coating is obtained by making boards according to the process. The tested properties are shown in Table 1.

Embodiment 2

[0045] The acidified modified graphene is selected. According to the method of Example 1, the paint is adjusted, and the ratio of additives such as modified graphene is controlled, 1 part of modified graphene (acidified), 10 parts of TDI trimer, 19 parts of conductive mica, 3 parts of cyclohexanone, xylene 7 parts, 2 parts of n-butanol, 55 parts of epoxy resin, stir and mix at room temperature to obtain a light gray paint solution with a solid content of 57.5% (120°C / 1g / 2h) and a viscosity of 125.9s (4 cups, 25 ℃), the oil tank conductive coating is obtained by making boards according to the process. The tested properties are shown in Table 1.

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Abstract

The invention discloses a graphene-flaky conductive mica oil tank static electricity conduction anticorrosive paint and a preparation method thereof. The paint uses epoxy resin as matrix resin, uses modified graphene and conductive mica as a two-component conductive filler, and adopts an isocyanate curing agent. The paint has the advantages of static electricity conduction, heat conduction, corrosion resistance and the like, the method is simple in technology, and the sources of the raw materials are wide. The preparation method of the graphene-flaky conductive mica oil tank static electricity conduction anticorrosive paint provided by the invention mainly comprises the following steps: synthesis of modified graphene, synthesis of isocyanate tripolymer and preparation of the oil tank static electricity conduction anticorrosive paint, wherein the graphene and the flaky conductive mica serve as the two-component conductive filler, the epoxy resin serves as the matrix resin, and an appropriate amount of a solvent is added, so that the graphene-flaky conductive mica oil tank static electricity conduction anticorrosive paint is obtained.

Description

technical field [0001] The invention relates to a static-conductive anti-corrosion paint for oil tanks, more specifically to a graphene-sheet-shaped conductive mica oil-tank conductive anti-corrosion paint and a preparation method thereof, belonging to the technical field of static-conductive paint production. Background technique [0002] Static conductive coatings generally refer to a type of special functional coatings that are coated on non-conductive substrates and have the ability to conduct current and eliminate accumulated static charges, electromagnetic shielding and electric heating. They are mainly divided into blending type and intrinsic type. Conductive coatings have been widely used in various fields such as electronic appliances, construction, chemical equipment, and military affairs. The blended conductive coating is to add metal particles into the insulating polymer to make the polymer have conductive properties. This conductive property is not an inherent c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/24C09D5/08C09D163/00
CPCC08K3/04C08K3/34C08K7/00C08K9/02C08K9/06C08K2201/001C09D5/08C09D5/24C09D163/00
Inventor 陈以满王同赛张卫中
Owner NANJING CHANGJIANG PAINT
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