Lyophobic and oleophylic micro nano-coatings applied to of oil filtering dehydration and preparation method thereof

A filtration dehydration, micro-nano technology, applied in the direction of mechanical dehydration/demulsification, filtration separation, separation method, etc., can solve the problems of thick coating, easy to block mesh, poor lipophilicity, etc., and achieve the distribution of coating film. Uniform, good hydrophobic effect and wide applicability
CN101601940AInactive Publication Date: 2009-12-16SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2009-12-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses Lyophobic and oleophylic micro nano-coatings applied to oil filtering dehydration and a preparation method thereof. Base material of the coatings is metal mesh grid with 50-1800 meshes, the surface of the metal mesh grid is coated with a layer of dense micro nano-coating which is dense thin film composed of nano silica global particles with partical size ranging from 90nm to 500nm.In the method of the invention, the sol-gel method is adopted, tetraethyl ester serves as the precursor, ammonia water serves as the catalyst, ethanol serves as the solvent, alkyl oxosilane serves as lyophobic modifier, the method of hydrolytie polycondensation is adopted to obtain lyophobic nano silica sol, the process of impregnation or spraying is adopted to coat the gel on the metal mesh grid with 50-1800 meshes, after thermal treatment, oil-water separation net with lyophobic and oleophylic properties is obtained. The method of the invention features simple process, no harm to the environment, no need of fluorine material, wide application to coalescing separator as a separation filter element and the function of filtration and dehydration of oil.
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Description

technical field

[0001] The invention relates to a hydrophobic and lipophilic micro-nano coating for oil filtration and dehydration and a preparation method thereof. It belongs to the technical fields of chemical engineering and functional materials. Background technique

[0002] Moisture in aviation kerosene, hydraulic oil, gasoline and other oils will accelerate oil deterioration, or corrode equipment components, and even cause system failure, directly affecting the life of the engine and even the safety of aircraft and automobiles. The oil-water separator is made of a separation filter element coated with hydrophobic and lipophilic materials. When the oil passes through, the difference in contact characteristics between the surface of the material and the surface of the oil and water can be used to intercept the tiny water droplets and effectively remove the oil in the oil. Trace moisture. The key technology of the separation filter element of the oil-water separator lie...

Claims

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