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Graphene water-borne electrothermal film coating and preparation method thereof

A water-based, electrothermal film technology, applied in the direction of conductive coatings, anti-corrosion coatings, fire-resistant coatings, etc., can solve the problems of affecting electrical conductivity, poor dispersion, easy agglomeration, etc., to improve electrical conductivity and heating performance, electrical conductivity and anti-corrosion Excellent performance, the effect of reducing agglomeration

Inactive Publication Date: 2018-03-09
厦门信果石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its disadvantage is that graphene and nano-carbon black have poor dispersion in water-based coatings and are easy to agglomerate, thus affecting electrical conductivity and other properties.

Method used

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  • Graphene water-borne electrothermal film coating and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0021] A graphene water-based electric heating film coating, water-based silicone resin 52.7wt%, nano-graphene 3.3wt%, calcium sulfate whisker and hydrogenated castor oil mixture 1.0wt%, polyaniline 1.0%wt%, polythiophene 1.0wt% , leveling agent 0.5wt%, defoamer 0.5wt% and water 40wt%; the sum of the mass fractions of the above components is 100%.

[0022] The preparation method is: first mix 52.7g of water-based silicone resin (H-900) and 40g of water to form a mixed solution; then take 3.3g of nano-graphene powder (particle size: 100nm) in the mixed solution After stirring for 1 minute, add 1g of nano-graphene dispersant (a mixture of calcium sulfate whiskers and hydrogenated castor oil, the weight ratio is 2:1), 1g of polyaniline, 1g of polythiophene, leveling agent ( BYK-333) and defoamer (BD-304) each 0.5g in the mixed solution, and fully stirred to obtain a mixed solution. Finally, place the mixed solution in a ball mill for grinding to obtain a graphene water-based ele...

Embodiment 2

[0024] A graphene water-based electrothermal film coating, water-based epoxy resin 52.0wt%, nano-graphene 4.5wt%, calcium sulfate whisker and hydrogenated castor oil mixture 2.0wt%, polyaniline 1.5wt%, polythiophene 1.5wt%, Leveling agent 1.5wt%, defoamer 2.0wt% and water 35wt%; the sum of the mass fractions of the above components is 100%.

[0025] The preparation method is: first mix 52.0g of water-based epoxy resin (E44) and 35g of water together to form a mixed solution; then take 4.5g of nano-graphene powder (particle size is 100nm) in the mixed solution, stir After 1 minute, add 2g of nano-graphene dispersant (a mixture of calcium sulfate whiskers and hydrogenated castor oil, the weight ratio is 2:1), 1.5g of polyaniline, 1.5g of polythiophene, leveling agent (BYK -333) 1.5g and defoamer (BD-304) 2g in the mixed solution, and fully stirred to obtain a mixed solution. Finally, the mixed solution is placed in a ball mill for grinding to obtain the nano graphene heat-dissi...

Embodiment 3

[0027] A graphene water-based electrothermal film coating, water-based polyurethane resin 46.5wt%, nano-graphene 7.0wt%, calcium sulfate whisker and hydrogenated castor oil mixture 2.0wt%, polyaniline 1.0wt%, polythiophene 1.5wt%, flow Leveling agent 1.0wt%, defoamer 1.0wt% and water 40wt%; the sum of the mass fractions of the above components is 100%.

[0028] The preparation method is: first mix 46.5g of water-based polyurethane resin (CS1600) and 40g of water together to form a mixed solution; then take 7g of nano-graphene powder (particle size is 100nm) in the mixed solution and stir for 1 minute Finally, add 2.0 nanographene dispersants (a mixture of calcium sulfate whiskers and hydrogenated castor oil, the weight ratio is 2:1), 1.0g polyaniline, 1.5g polythiophene, leveling agent (BYK-333 ) and defoamer (BD-304) each 1.0g in the mixed solution, and fully stirred to obtain a mixed solution. Finally, the mixed solution was placed in a ball mill for grinding to obtain the ...

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Abstract

The invention relates to the field of novel electrothermal mateirals, and specifically relates to a graphene water-borne electrothermal film coating and a preparation method thereof. The coating comprises the following components: 40-60wt% of water-borne resin, 3-15wt% of nano graphene, 0.5-2.5wt% of mixture of calcium sulfate whisker and hydrogenated castor oil, 0.5-1.5wt% of polyaniline, 0.5-1.5wt% of polythiophene, 0.5-1.5wt% of a flatting agent, 0.5-1.5wt% of a defoaming agent, and 30-40wt% of water, totalling 100%. According to the coating, the mixture of calcium sulfate whisker and hydrogenated castor oil is added, so that the nano graphene can be prevented from agglomeration in the solution, and moreover, the defects of poor lapping of graphene laminates and incomplete power conducting and heat transferring network can be avoided, and as a result, the power conducting performance and the heating performance of the product can be improved.

Description

technical field [0001] The invention relates to the field of novel electrothermal materials, in particular to a graphene water-based electrothermal film coating and a preparation method thereof. Background technique [0002] The electrothermal film heating system is different from the point heating system represented by radiators, air conditioners, and radiators and the line heating system represented by heating cables. It is a low-carbon heating system developed by modern aerospace technology in the field of surface heating. Technology Products. [0003] The principle of electric heating film heating is that under the action of an electric field, the carbon molecular clusters in the heating element produce "Brownian motion", and severe friction and impact occur between carbon molecules, and the heat energy generated is transmitted to the outside in the form of far-infrared radiation and convection. , the conversion rate of electric energy and heat energy is as high as 98%....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D163/00C09D175/04C09D5/24C09D5/08C09D7/61
CPCC09D183/04C08K2201/001C08K2201/011C08L2205/035C09D5/08C09D5/18C09D5/24C09D163/00C09D175/04C08L91/00C08L79/02C08L65/00C08K7/08C08K7/00
Inventor 刘乐光
Owner 厦门信果石墨烯科技有限公司
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