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Preparation method of hydrophobic and oleophylic porous material

A porous material, hydrophobic and lipophilic technology, applied in the direction of separation methods, chemical instruments and methods, liquid separation, etc., can solve the problems of cumbersome and complicated preparation process, limit the application range of graphene-based oil-absorbing materials, and the high price of graphene, and achieve The effect of good hydrophobicity

Inactive Publication Date: 2020-04-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a series of graphene-based oil-absorbing materials with excellent performance have been prepared, the existing preparation process is cumbersome and complicated due to the immature preparation process of graphene, which makes graphene expensive, thus limiting the application range of graphene-based oil-absorbing materials.

Method used

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  • Preparation method of hydrophobic and oleophylic porous material
  • Preparation method of hydrophobic and oleophylic porous material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A. Preparation of precursor solution

[0054] The concentration of preparing sodium bicarbonate in the volumetric flask is 5% sodium bicarbonate (cell opener) aqueous solution and the concentration of sorbitan oleate is 0.36% sorbitan oleate (surfactant) aqueous solution.

[0055] 0.075 g of graphite particles (325 mesh in particle size) were added to 5 g of isooctyl acrylate, and dispersed by ultrasonic, the ultrasonic power was 300 W, and the ultrasonic time was 5 min.

[0056] Then, 15 g of sodium bicarbonate aqueous solution was added, and then 0.02 g of sorbitan oleate aqueous solution was added, and blended for 5 min at a speed of 500 r / min by means of mechanical stirring.

[0057] After that, add 0.05g of azobisisobutyronitrile (initiator) and 0.05g of ethylene glycol dimethacrylate (EGDMA, cross-linking agent), by means of mechanical stirring, at a speed of 500r / min Mix for 5 minutes to obtain a water-in-oil (water phase) type inverse Pickering emulsion (precu...

Embodiment 2

[0063] A. Preparation of precursor solution

[0064] Add 0.05g of hexane (cell opener) in 5g of mixed monomers that are used in a ratio of 3:1 by butyl acrylate monomer and methyl methacrylate monomer, and then 0.25g of graphite particles ( The particle size is 1000 mesh) was added into the mixed monomer, and dispersed by ultrasonic, the ultrasonic power was 300W, and the ultrasonic time was 5min.

[0065] Then, add 17g of water, then add 0.1mg of sorbitan monolaurate-40 (surfactant), 0.1mg of Tween-60 (surfactant), by mechanical stirring, at 500r / min Blending for 5 min at a rotational speed.

[0066] Afterwards, add the potassium persulfate (initiator) of 0.04g and the sodium bisulfite (initiator) of 0.02g and the divinylbenzene (DVB, linking agent) of 0.1g, by the mode of mechanical stirring, at 500r / The mixture was blended for 5 minutes at a rotation speed of min to obtain an oil-in-oil (polybutylacrylate-methyl methacrylate phase) (water phase) inverse Pickering emulsio...

Embodiment 3

[0071] A. Preparation of precursor solution

[0072] 0.1 g of graphite particles (with a particle size of 5000 mesh) was added to 5 g of butyl acrylate, and dispersed by ultrasonic, the ultrasonic power was 300 W, and the ultrasonic time was 5 min.

[0073] Add 0.05g of p-toluenesulfonyl hydrazide (cell opener), then add 16g of water, then add 0.2mg of N,N-dimethyloctadecylamine hydrochloride (surfactant), by mechanical stirring , Blending for 5min at a speed of 500r / min.

[0074] Afterwards, add the benzoyl peroxide (initiator) of 0.1g and the pentaerythritol triacrylate (crosslinking agent) of 0.1g, by the mode of mechanical agitation, under the rotating speed of 500r / min, blend 5min, obtain graphite in the form of flakes A water-in-water (water phase) type inverse Pickering emulsion (precursor solution) dispersed in oil (polybutyl acrylate phase).

[0075] B. Preparation of porous materials

[0076] The precursor solution prepared in step (A) was pre-polymerized in a wat...

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Abstract

The invention discloses a preparation method of a hydrophobic and oleophylic porous material. The preparation method comprises the following steps: providing a precursor solution containing nanoscalegraphite particles, a polymer monomer, an initiator, a cross-linking agent, a pore opening agent, a surfactant and water; carrying out pre-polymerization treatment on the precursor solution at a firsttemperature to form a prepolymer; and at a second temperature, carrying out polymerization pore opening treatment on the prepolymer to obtain the hydrophobic and oleophylic porous material, wherein the first temperature is lower than the second temperature.

Description

technical field [0001] The invention relates to the field of preparation of environmental functional materials, in particular to a preparation method of hydrophobic and lipophilic porous materials. Background technique [0002] In recent years, environmental issues have become a major issue of common concern to all mankind. Among them, the leakage of various industrial oils and the discharge of waste cooking oil (commonly known as gutter oil) have caused serious damage to rivers, lakes, and marine ecological environments, and are extremely likely to cause irreversible harm to human health. Therefore, how to remove the organic liquid in the water body is a major problem to be solved urgently. [0003] The use of oil-absorbing materials is currently the most common and safe way to solve such problems. Among them, graphene has a higher theoretical specific surface area (can reach 2620m 2 / g), its unique physical and chemical properties make it possible to have a very strong ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
CPCB01D17/0202
Inventor 陈婧郭鸣明
Owner CHINA PETROLEUM & CHEM CORP
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