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Chemical coating material with resistance to geothermal water corrosion and preparation method of chemical coating material

A technology of chemical plating and geothermal water, which is applied in the field of chemical plating materials and its preparation, can solve problems such as corrosion and scaling easily, and achieve the effects of maintaining stability, promoting adsorption, and inhibiting contact

Inactive Publication Date: 2019-01-08
王召惠
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Technical problem to be solved by the present invention: Aiming at the problem that the geothermal well pipes used for extracting geothermal water and the heat exchanger required for the heating and cooling system are prone to corrosion and scaling due to long-term immersion in geothermal water, a A kind of anti-geothermal water corrosion electroless coating material and preparation method thereof

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  • Chemical coating material with resistance to geothermal water corrosion and preparation method of chemical coating material

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Embodiment Construction

[0018] Take 20~30g nickel sulfate, 0.2~0.5g copper sulfate, 20~30g sodium dihydrogen phosphate, 8~12g sodium acetate, 10~20g borax, 0.010~0.015g sodium citrate, 0.02~0.03g oxalic acid, add 1000~ 1200mL deionized water, stirred at 300-400r / min for 20-30min to obtain a mixed solution, added 1-2g nanometer zirconia, 0.05-0.08g surfactant to the mixed solution, and 350W ultrasonic wave at 40-50℃ Ultrasonic dispersion for 20 to 30 minutes, and then use 50% ammonia water to adjust the pH to 4 to 5 to obtain a dispersion, add 10 to 20 g of organic additives to the mixture, and stir at 300 to 400 r / min for 20 to 30 minutes to obtain a Electroless coating materials corroded by geothermal water.

[0019] Take 20g of nickel sulfate, 0.2g of copper sulfate, 20g of sodium dihydrogen phosphate, 8g of sodium acetate, 10g of borax, 0.010g of sodium citrate, and 0.02g of oxalic acid, add them to 1000mL of deionized water, and stir at 300r / min for 20min to obtain a mixture. Add 1g of nanometer...

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Abstract

The invention relates to a chemical coating material with resistance to geothermal water corrosion and a preparation method of the chemical coating material, and belongs to the technical field of newenergy materials. Nano zirconium dioxide is added to a coating solution, so that a three-dimensional network skeleton is formed between Ni-P particles and ZrO2 nanoparticles, the Ni-P particles are filled with the ZrO2 nanoparticles, a coating is subjected to crystallization and Ni and P desolventizing decomposition under the action of heat treatment, P atoms diffuse and are subjected to lattice distortion, and Ni and intermetallic compounds are formed. Meanwhile, the electrode potential of Ni is higher than the electrode potential of Cu, a uniform film is formed on the surface of the coating,and the passivation film can effectively block the corrosion process and can also significantly reduce porosity of the coating grain refinement coating, effectively inhibit contact between a corrosion medium and a substrate, and improve corrosion resistance. Phosphate has the function of a buffer agent and promotes adsorption of a salt film protective layer to form a uniform film layer, oxalic acid can activate the surface of the steel substrate, borax can retard corrosion of the coating from the external environment, and corrosion resistance of the coating is enhanced.

Description

technical field [0001] The invention relates to an anti-geothermal water corrosion-resistant chemical coating material and a preparation method thereof, belonging to the technical field of new energy materials. Background technique [0002] Geothermal resource is a very valuable comprehensive mineral resource with many functions and wide uses. It is not only a clean energy resource that can be used for power generation and heating, but also a kind of mineral that can be used to extract bromine, iodine, borax, Hot brine resources and natural fertilizer water resources for industrial raw materials such as potassium salts and ammonium salts, as well as valuable medical hot mineral water, drinking mineral water resources and domestic water supply sources. However, due to the high temperature of geothermal water and its long-term movement inside the earth's crust, it has strong dissolution, ion exchange and analysis effects on rocks, so it has complex chemical components, includi...

Claims

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Application Information

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IPC IPC(8): C23C18/50
CPCC23C18/50
Inventor 王召惠张桂芳史志新
Owner 王召惠
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