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Conductive coating material containing physical stripping graphene and preparation method of coating material

A conductive coating and physical peeling technology, which is applied in the direction of conductive paint, coating, epoxy resin coating, etc., can solve the problem of difficult physical peeling of graphene dispersion, poor dispersion of physical peeling graphene, and difficulty in preparing water-based conductive coatings. Layer materials and other issues, to achieve the effect of less structural defects, excellent electrical conductivity, and easy to use

Inactive Publication Date: 2016-11-16
上海多希石墨烯材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor dispersion performance of physically exfoliated graphene, it is difficult to stably disperse physically exfoliated graphene in the material in the existing preparation technology of conductive coating materials.
And due to the poor dispersion of physically exfoliated graphene, it is difficult to use it to prepare water-based conductive coating materials

Method used

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  • Conductive coating material containing physical stripping graphene and preparation method of coating material
  • Conductive coating material containing physical stripping graphene and preparation method of coating material
  • Conductive coating material containing physical stripping graphene and preparation method of coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 9 parts of polyvinylpyrrolidone were weighed and dissolved in 30 parts of N-methylpyrrolidone to obtain a polyvinylpyrrolidone solution. Take 9 parts of 50-mesh physically exfoliated graphene powder and add it to 40 parts of N-methylpyrrolidone, ultrasonicate for 2 hours, ultrasonic power is 500W and ultrasonic temperature is 30°C to obtain graphene slurry. Mix the polyvinylpyrrolidone solution with the graphene slurry obtained after ultrasonication and add 3 parts of dispersant (BYK161), 3 parts of leveling agent (BYK361), 3 parts of defoamer (BYK088), 3 parts of coupling agent ( KH550) high-speed disperser for dispersing, the dispersing speed is 2000r / min, and the dispersing time is 30min. The resistivity of the prepared conductive coating material is shown in Table 1.

Embodiment 2

[0033] Weigh 9 parts of polyvinylpyrrolidone and dissolve in 30 parts of dioxane. Take 9 parts of 50-mesh high-quality physically exfoliated graphene powder and add 40 parts of dioxane to ultrasonic for 2 hours, with ultrasonic power of 400W and ultrasonic temperature of 30°C. Mix the polyvinylpyrrolidone solution with the graphene slurry after ultrasonication and add 3 parts of dispersant (BYK110), 3 parts of leveling agent (BYK356), 3 parts of defoamer (BYK057), 3 parts of coupling agent (KH560 ) High-speed dispersing machine for dispersing, the dispersing speed is 1000r / min, and the dispersing time is 60min. The resistivity of the prepared conductive coating material is shown in Table 1.

Embodiment 3

[0035]Weigh 17 parts of polyvinylpyrrolidone and dissolve in 30 parts of N,N-dimethylformamide. Take 1 part of 50-mesh high-quality physically exfoliated graphene powder and add 40 parts of N,N-dimethylformamide to ultrasonic for 4 hours, ultrasonic power 500W, ultrasonic temperature 30°C. Mix the polyvinylpyrrolidone solution with the graphene slurry after ultrasonication and add 3 parts of dispersant (BYK168), 3 parts of leveling agent (BYK399), 3 parts of defoamer (BYK052), 3 parts of coupling agent (KH560 ) High-speed dispersing machine for dispersing, the dispersing speed is 2000r / min, and the dispersing time is 50min. The resistivity of the prepared conductive coating material is shown in Table 1.

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Abstract

The invention mainly belongs to the technical field of conductive materials, and particularly relates to a conductive coating material containing physical stripping graphene and a preparation method of the coating material. The conductive component of the conductive coating material is physical stripping graphene powder, and the conductive coating material further comprises matrix resin, a solvent and auxiliaries; the conductive coating materials can be divided into a waterborne coating material and a solvent-based coating material according to solvent types, and the conductive coating material is prepared from, by weight, 1-30 parts of physical stripping graphene powder, 9-30 parts of matrix resin, 40-80 parts of solvent and 0.1-10 parts of auxiliaries. The conductive coating material has an excellent conductive property and is convenient to use and suitable for coating and printing, the conductive coating materials can be divided into the waterborne coating material and the solvent-based coating material according to the solvent types, and flexible adjustment can be conducted according to different demands.

Description

technical field [0001] The invention mainly belongs to the technical field of conductive materials, and in particular relates to a conductive coating material containing physically exfoliated graphene and a preparation method thereof. Background technique [0002] The conjugated structure of graphene makes it have high electron mobility and excellent electrical properties. The thermal conductivity of graphene reaches 5000W / (m·K), which is a good thermal conductor. The unique carrier characteristics of graphene make its electron mobility reach 2×10 5 cm 2 / (V·s), 100 times more than silicon, and hardly changes with temperature. The excellent electrical conductivity of graphene is superior to conductive materials such as silver powder and copper powder, and has excellent mechanical and thermal properties. It is an excellent additive for conductive coating materials. The use of graphene can create a new situation for conductive coating materials. [0003] At the same time, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D139/06C09D129/04C09D171/02C09D179/02C09D179/04C09D149/00C09D163/00C09D133/00C09D161/06C09D165/00C09D5/24C09D7/12
CPCC09D139/06C08K3/04C09D5/24C09D7/63C09D129/04C09D133/00C09D149/00C09D161/06C09D163/00C09D165/00C09D171/02C09D179/02C09D179/04
Inventor 何勇赫恩龙
Owner 上海多希石墨烯材料科技有限公司
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