Preparation method of super-hydrophobic/lipophilic oil-water separation meshed membrane

A super-hydrophobic, off-grid membrane technology, applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve the problems of increased oil flow resistance, organic raw material pollution, and high cost of oil-water separation ophthalmic membrane raw materials, saving energy cost, low impact

Active Publication Date: 2014-08-06
天津微能新材料有限公司
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Problems solved by technology

Oil-water separation belongs to the category of liquid-liquid separation. Among them, oil removal in water is more concerned, and the separation process is relatively complicated.
However, the existing oil-water separation membranes have the disadvantages of complex and difficult processing processes such as high-temperature baking and film formation, and the coating is relatively thick, and the lipophi

Method used

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Embodiment Construction

[0016] The technical solutions of the present invention will be described in further detail below through examples.

[0017] The invention provides a kind of preparation method of superhydrophobic / oleophilic oil-water separation omentum, described preparation method comprises the steps:

[0018] A. Add 188g of sodium silicate and 45g of sodium sulfate to 20L of deionized water. The concentrations of sodium silicate and sodium sulfate in the formed solution are 0.05mol / L and 0.015mol / L respectively. Due to the use of inorganic raw materials, the Cost of production. However, due to the addition of sodium sulfate, the time for preparing the sol in the next step is greatly reduced, which is conducive to reducing the production cycle and saving costs.

[0019] B. Stir to completely dissolve the sodium silicate and sodium sulfate; add 68% concentrated nitric acid dropwise to adjust the pH to 8-8.5, take the pH value as the standard for the amount of nitric acid, then continue to st...

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Abstract

The invention relates to a preparation method of a super-hydrophobic/lipophilic oil-water separation meshed membrane with low cost and high oil-water separation efficiency. Inorganic matters with low cost are adopted as part of raw materials, a mild preparation process is adopted to form a nanoscale mastoid structure on a metal mesh with a sol-gel method, and an organic modifier with low surface energy is adopted to modify the built nano SiO2, so that the super-hydrophobic/lipophilic oil-water separation meshed membrane is prepared, and the cost is greatly saved; on the other hand, the inorganic raw materials have low influence on environment and meet the requirement of green chemical production at present.

Description

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Claims

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Application Information

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Owner 天津微能新材料有限公司
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