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
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[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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