Preparation method of graphene modified high-solid-content high-temperature-resistant epoxy heat-conducting functional coating

A graphene modification and functional coating technology, applied in epoxy resin coatings, anti-corrosion coatings, fire-retardant coatings, etc., can solve the problems of unreachable, large thermal resistance, and insufficient high temperature resistance.

Inactive Publication Date: 2017-12-22
IANGSU JINLING SPECIAL PAINT CO LTD
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Problems solved by technology

The biggest disadvantage of these traditional coating products is the lack of functional characteristics, that is, although the coating has achieved corrosion resistance, its high temperature resistance is not enough (≤120°C), and its the

Method used

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  • Preparation method of graphene modified high-solid-content high-temperature-resistant epoxy heat-conducting functional coating
  • Preparation method of graphene modified high-solid-content high-temperature-resistant epoxy heat-conducting functional coating

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Embodiment Construction

[0023] 1. Preparation of few-layer graphene dispersion slurry:

[0024] At room temperature, take 150 mg of Grafguard 160-50N by mass, and irradiate with 60 Hz, 900 W microwave for 10 to 60 s under the protection of nitrogen atmosphere to obtain microwave expansion-treated graphite.

[0025] Dissolve an appropriate amount of CTAB in 300 mL of deionized water to prepare an 8.3 mg / mL CTAB aqueous solution.

[0026] Take 50 mg of microwave-expanded graphite and mix it with the above CTAB aqueous solution, place it under ultrasonic conditions, and disperse for 12 to 24 hours to obtain a uniformly dispersed graphene suspension, then filter it with a microporous membrane with a pore size of 0.2 µm, and use it repeatedly. Wash with ion water, filter, centrifuge, dry, finally add AMP-95 amine neutralizer to adjust the pH to 7-9, disperse for 5 minutes, and prepare a few-layer graphene dispersion slurry with a solid content of 5-10% (hereinafter Abbreviated as GSs dispersion slurry). ...

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Abstract

The invention relates to a preparation method of a graphene modified high-solid-content high-temperature-resistant epoxy heat-conducting functional coating, belongs to the technical field of coating new materials, and also relates to the technical field of application of a graphene new material. The preparation method comprises preparation of priming paint and preparation of finishing paint, and is characterized in that a small layer of graphene dispersing slurry is added during preparation of the priming paint and the finishing paint separately. The coating product is an oily high-solid-content system, does not contain water, but contains a small amount of volatile environment-friendly cosolvents (the discharge reaches to the standard). The most important characteristics of the product are as follows: the heat tolerance of a paint film reaches to 250 DEG C, the product can be on active service for a long time under the working condition of 200 DEG C, the hardness of the dry paint film reaches to 5 to 6H, the heat-conducting rate reaches to 265 W/m.K, the dirt coefficient is 10 times lower than the national standard, and the coating does not have any change after being soaked into an erosion-resistant medium for 30 days.

Description

technical field [0001] The invention belongs to the technical field of new coating materials, and also relates to the technical field of application of graphene new materials. Background technique [0002] Since the research team of Andre K. Geim (Andre K. Geim) at the University of Manchester in the United Kingdom prepared graphene in 2004 and won the Nobel Prize in Physics in 2010, graphene has become a new term in the scientific and technological circles and Hot new material. The advent of graphene has caused a research boom all over the world. [0003] At present, there are many methods for researching and preparing graphene, such as micromechanical exfoliation method, orientation epitaxy method (crystal film growth method), liquid / gas phase direct exfoliation method, heating SiC method, chemical vapor deposition method, chemical dispersion method, oxidation method, etc. -Reduction methods, and more recently solvent stripping and solvothermal methods, etc. [0004] Fo...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/10C09D5/08C09D5/00C09D5/16C09D7/12
CPCC09D163/00C08K2003/0893C08L2201/08C09D5/00C09D5/002C09D5/08C09D5/106C09D5/1618C09D5/1687C09D5/18C08L61/32C08K13/06C08K9/02C08K7/00C08K7/24C08K3/36C08K3/34C08K3/08C08K3/346
Inventor 孙陆逸王赵锋戴海雄卞直兵张驰马庆磊
Owner IANGSU JINLING SPECIAL PAINT CO LTD
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