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Watersoluble plumbago electrically-conducting paint and method for producing the same

A conductive coating and graphite technology, applied in conductive coatings, coatings and other directions, can solve problems such as large environmental pollution and poor fluidity, and achieve the effects of simple and easy preparation method, low adhesion, and excellent storage stability.

Inactive Publication Date: 2009-08-19
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to prepare a kind of water-based graphite conductive coating in order to solve the problems of organic solvent-based conductive coatings such as large environmental pollution and poor fluidity. Another purpose of the present invention is to provide the preparation method of the above-mentioned water-based graphite conductive coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 81g of deionized water and add 0.9g of sodium carboxymethylcellulose. After the sodium carboxymethylcellulose is completely dissolved, shake the solution in an ultrasonic cleaner for 15 minutes; stir the mixed solution with a high-speed mixer at a speed of 2500r / min Mix, add 20g of graphite powder (2μm) weighed in advance into the vigorously stirred solution, pour 40g of styrene-acrylic emulsion into it after stirring for 5min and add 0.4g of TEGO Airex 901w defoamer, stir for 15min and preliminarily disperse evenly The conductive paint was put into a ball mill jar and ball milled for 120 minutes to obtain a uniform and stable water-based graphite conductive paint. The pH value of the conductive coating is 10, the adhesion is grade 2, and the solid percentage is 28%. After curing at 70°C for 30 minutes, the volume resistivity of the coating film is measured to be 0.29Ω.cm, and the viscosity ranges from 120 to 180mPa. s, the average particle size of graphite partic...

Embodiment 2

[0027] Weigh 71 g of deionized water and add 0.7 g of sodium lauryl sulfate. After the sodium lauryl sulfate is completely dissolved, shake the solution in an ultrasonic cleaner for 10 min. Stir the mixed solution with a high-speed mixer at a speed of 2000r / min. Add 20g of graphite powder (5μm) weighed in advance into the vigorously stirred solution. After stirring for 5min, pour 40g of pure acrylic emulsion and add TEGO Airex 902w type disinfectant Foaming agent 0.6g, after stirring for 25 minutes, put the preliminarily uniformly dispersed conductive paint into a ball mill jar and ball mill for 90 minutes to obtain a uniform and stable water-based graphite conductive paint. The pH value of the conductive coating is 11, the adhesion is grade 3, and the solid percentage is 30%. After curing at 70°C for 30 minutes, the volume resistivity of the coating film is measured to be 0.25Ω.cm, and the viscosity ranges from 70 to 160mPa. s, the average particle size of graphite particles ...

Embodiment 3

[0029] 64g of deionized water was weighed and mixed with 5g of polyethylene glycol octylphenyl ether, and the mixed solution was shaken in an ultrasonic cleaner for 10min. Stir the mixed solution with a high-speed mixer at a speed of 3000r / min. Add 20g of graphite powder (2μm) weighed in advance into the vigorously stirred solution. After stirring for 5min, pour 20g of styrene-acrylic emulsion and add TEGO Airex 901w type disinfectant. Foaming agent. 0.2g. After stirring for 15 minutes, put the preliminarily uniformly dispersed conductive coating into a ball mill jar and mill for 120 minutes to obtain a uniform and stable water-based graphite conductive coating. The pH value of the conductive coating is 9, the adhesion is grade 2, and the solid percentage is 27%. After curing at 70°C for 30 minutes, the volume resistivity of the coating film is measured to be 0.23Ω.cm, and the viscosity ranges from 50 to 120mPa. s, the average particle size of graphite particles in the paint i...

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PUM

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Abstract

The invention relates to an aqueous graphite conducting paint and a preparation method thereof, comprising the raw materials with the mass percent: 14-20% of graphite, 0.4-5% of dispersant, 21-45% of film forming agent, 40-60% of de-ionized water and 0.1-0.5% of defoaming agent. The pH value range of the prepared conducting paint is 7-11, the viscosity range is 50-200mPa.s, the adhesive force is 2-3 level, the solidification temperature is 40-120 DEG C, the coating volume electric resistivity is 0.2-0.35 omega. cm, and the percentage content range of the solid is 25-35%. The aqueous graphite conducting paint has good storing stability, electric conduction, flow property and adhesive force as well as lower adding amount of the graphite.

Description

technical field [0001] The invention relates to a water-based conductive paint and a preparation method thereof, in particular to a water-based graphite conductive paint and a preparation method thereof. Background technique [0002] Conductive coatings are special coatings that are applied to substrates with high resistivity to conduct current and eliminate accumulated static charges. It has many advantages such as simple equipment, low cost, and wide application range, and is especially suitable for coating various complex shapes of surfaces. The earliest publicized conductive coating is the patent of silver and epoxy resin made of conductive adhesive published by the United States in 1948. Japan began to produce silver-based and carbon-based antistatic coatings in the late 1950s, and developed nickel-based coatings in the 1980s. Antistatic coatings of antistatic and copper series. The United States has developed a series of antistatic coatings for aircraft radomes since ...

Claims

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Application Information

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IPC IPC(8): C09D5/24C09D7/12C09D133/04
Inventor 张其土王恒飞王丽熙
Owner NANJING UNIV OF TECH
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