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A kind of preparation method of superhydrophobic sponge with emulsion separation function

A super-hydrophobic sponge and emulsion separation technology, applied in the field of oil-water emulsion separation, to achieve the effect of cheap and easy-to-obtain raw materials, high separation efficiency, and improved separation performance

Active Publication Date: 2022-04-15
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary superhydrophobic superoleophilic surfaces are widely used in the field of oil-water separation because of their selective oil absorption and complete non-absorption, but most superhydrophobic superoleophilic materials can only be used to separate simple layered oil-water mixtures.

Method used

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  • A kind of preparation method of superhydrophobic sponge with emulsion separation function
  • A kind of preparation method of superhydrophobic sponge with emulsion separation function
  • A kind of preparation method of superhydrophobic sponge with emulsion separation function

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Prepare 320mL of 0.6M sodium hydroxide aqueous solution, and add sodium dodecylbenzenesulfonate (SDBS) which is 3% of the mass of magnesium hydroxide theoretically obtained, and stir for 10min; then, prepare 80mL of 1.2M magnesium chloride MgCl 2 Solution was slowly added dropwise to the above-mentioned aqueous sodium hydroxide solution containing SDBS. After the reaction, continue to age the mother liquor under stirring for 3 hours; after aging, wash the product with deionized water several times, then dry it in an oven at 120°C for 3 hours, grind and sieve to obtain nano-sized magnesium hydroxide particles containing SDBS (S-MH).

[0035] The commercial melamine sponge is first immersed in the 100mL polyacrylic acid aqueous solution that the content of pH=1 is 0.1wt%. Soak in ultrapure water, then immerse in 100mL magnesium hydroxide suspension containing the above-mentioned nano-magnesium hydroxide particles, pH=5, the content is 0.2wt%, after washing and drying, a ...

Embodiment 2

[0041]Prepare 100mL of 0.2M sodium hydroxide NaOH aqueous solution, and add cetyltrimethylammonium bromide (CTAB) which is 3% of the mass of magnesium hydroxide theoretically obtained, and stir for 10min; then, prepare 25mL of 0.4M Magnesium chloride solution was slowly added dropwise into the above-mentioned NaOH aqueous solution containing CTAB. After the reaction, continue to age the mother liquor under stirring for 3 hours; after aging, wash the product with deionized water several times, then dry it in an oven at 120°C for 3 hours, grind and sieve to obtain nano-sized magnesium hydroxide particles containing CTAB (C-MH).

[0042] First immerse the commercial polyurethane sponge in the 100mL polyacrylic acid aqueous solution that the content of pH=1 is 0.1wt%. Soak in ultrapure water, then immerse in 100mL of magnesium hydroxide suspension containing the above-mentioned nano-magnesium hydroxide particles, pH=5 with a content of 0.1wt%, wash and dry to obtain a sponge with...

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Abstract

The invention discloses a preparation method of emulsion separation superhydrophobic sponge. By means of dip coating, the commercial polymer sponge is sequentially immersed in the prepared polyacrylic acid, chitosan solution, and suspension containing magnesium hydroxide. After cleaning and drying, the micro-nano structure on the surface is obtained. Sponge: the sponge obtained above is treated with a surfactant containing low surface energy, and after cleaning and drying, a superhydrophobic sponge capable of emulsion separation is obtained. The emulsion separation superhydrophobic sponge can be used for the separation of surfactant-stabilized oil-in-water mixed emulsion, and has the advantages of high separation efficiency, high reusability, large adsorption capacity, high flux, etc., and the process is simple and the conditions are mild , green and environmental protection, cheap and convenient, short preparation cycle, easy to realize large-scale production and application.

Description

technical field [0001] The invention belongs to the technical field of oil-water emulsion separation, and relates to a method for modifying and modifying polymer sponges by utilizing nanotechnology and surface modification technology to prepare superhydrophobic sponges for emulsion separation. Background technique [0002] As an important source of pollution worldwide, oily wastewater has caused serious negative impacts on the ecological environment, social economy, and health. The pollution of oily wastewater mainly comes from the direct discharge of oily wastewater in petrochemical, textile dyeing and finishing, metal smelting, food processing and other industrial fields, as well as oil leakage in the process of offshore oil exploration, development and transportation. The development of materials and processes with high-efficiency separation capabilities for oily wastewater has wide practical application value. At present, a large number of effective methods have been re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/42C08J9/40B01J20/26B01J20/28B01J20/30B01D17/04B01D17/022C08L61/28C08L75/04C08L33/02C08L5/08
CPCC08J9/42C08J9/40B01J20/265B01J20/041B01J20/28045B01J20/28011B01D17/0202B01D17/047C08J2361/28C08J2375/04C08J2433/02C08J2405/08C08K2201/011C08K7/00C08K2003/2224
Inventor 周莹刘帅卓张骞范雷倚于姗王芳
Owner SOUTHWEST PETROLEUM UNIV