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High temperature and wear resistant graphene coating and preparation method thereof

A graphene, high-temperature-resistant technology, applied in the coating and other directions, to achieve the effects of high adhesion, improved corrosion resistance, and long service life

Active Publication Date: 2014-02-05
ZHUHAI LETONG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention provides a coating with graphene as the main raw material, which is currently not available on the market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a formula for high-temperature and wear-resistant graphene coatings. Specifically, the coating is composed of the following components by weight percentage: silicate 40 wt%, graphene 5 wt%, additives include: wetting and dispersing agent 1 wt%, defoamer 2 wt%, leveling agent 2 wt%, and the balance is water as a solvent.

[0030] The graphene is functional graphene or graphene obtained by chemical doping or chemical modification.

[0031] The silicate includes an aqueous solution of alkali metal (mainly K, Ca, Na, Fe, Mg, Al, Mn, etc.) silicate and an aqueous dispersion of colloidal silicon dioxide. Polymerization occurs when the concentration of silicic acid in the solution is higher than the solubility. Polymerization is an important property of silicic acid, that is, monosilicic acid polymerizes into oligomeric silicic acid, and then polymerizes into high polysilicic acid.

[0032] The auxiliary agent includes: one or more of coupling agent,...

Embodiment 2

[0034] The present embodiment provides a kind of method that prepares the high temperature resistant wear-resisting graphene coating that contains 100g graphene:

[0035] Mix 500 g of water, 1 g of defoamer (BYK-028), 1 g of leveling agent (BYK-420), 300 g of sodium silicate aqueous solution (Hubei Xingyinhe Chemical Co., Ltd.) and colloidal silicon dioxide (Guangdong Haihua Chemical Co., Ltd.) Co., Ltd.) 100 g was dispersed and mixed in a high-speed dispersing kettle, and the slurry was prepared by sanding with a sand mill, and then filtered to make A mixture;

[0036] Then 100 g of graphene (Ningbo Moxi Technology Co., Ltd.), 3 g of wetting and dispersing agent (BYK-2155) and 500 g of water were added to the mixing tank and stirred, and the B mixture was prepared after modification reaction;

[0037] Finally, add the B mixture into the mixing tank containing the A mixture and stir slowly, then add the coupling agent (Tego), pH regulator, and thickener solution, stir and filt...

Embodiment 3

[0040] Present embodiment provides another kind of method that prepares the high temperature resistant wear-resistant graphene coating that contains 100g graphene:

[0041] Mix 400 g of water, 1 g of defoamer (BYK-028), 5 g of dispersant (BYK-2155), 200 g of sodium silicate aqueous solution (Hubei Xingyinhe Chemical Co., Ltd.) and colloidal silicon dioxide (Guangdong Haihua Chemical Co., Ltd. Company) 150 g was dispersed and mixed in a high-speed dispersing kettle, and the slurry was prepared by sand milling with a sand mill, and the A mixture was made after filtration;

[0042] Then 100 g of graphene (Ningbo Moxi Technology Co., Ltd.), 1 g of wetting and dispersing agent (BYK-2155) and 500 g of water were added to the mixing tank and stirred, and the B mixture was prepared after modification reaction;

[0043] Finally, add the B mixture into the mixing tank containing the A mixture and stir slowly, then add the coupling agent (Tego), pH regulator, and thickener solution, stir...

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Abstract

The invention relates to a high temperature and wear resistant graphene coating, and the graphene coating is characterized by comprising the following components by weight percent: 35.0-60.0wt% of silicate, 0.01-20.0wt% of graphene, 0.1-25.0wt% of additive, and the balance of water as a solvent. The invention further provides a method for preparing the coating. The high temperature and wear resistant graphene coating disclosed by the invention can be used for well protecting matrixes by coating on pipelines, chemical equipment, storage, kiln furnace, medicine, aerospace and sewage, the service life of the matrix is prolonged, and the performance of the coating is much greater than that of a common material.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a high-temperature and wear-resistant graphene coating and a preparation method thereof. [0002] Background technique [0003] Graphene can be regarded as a single sheet of graphite that has been exfoliated, with only one carbon atom layer thickness (0.35 nm). The carbon atoms are arranged in a hexagonal ring, and each carbon atom is closely connected to the other three carbon atoms through σ bonds. , C-C bonds make graphene have excellent mechanical properties. The strong force between carbon atoms makes it the material with the highest mechanical strength known so far, and it can be widely used as an additive in new high-strength composite materials. [0004] Graphene has superhard properties (110GPa), which is harder than diamond. Graphene is also super strong, 100 times stronger than the best steel in the world. At the same time, it has good elasticity, and the stretchi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/12
Inventor 张彬贤胡军何益良何喜森郑伟忠蒯舒洪
Owner ZHUHAI LETONG NEW MATERIAL TECH CO LTD
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