Material and preparation method for ph-controlled transition from superamphiphobic to superhydrophobic/superlipophilic

A super-hydrophobic and super-amphiphobic technology, applied in separation methods, chemical instruments and methods, immiscible liquid separation, etc., can solve problems affecting oil-water separation performance, achieve excellent oil-water separation performance, strong practicability, and preparation method simple effect

Active Publication Date: 2018-10-30
山东动向化学有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, these materials cannot avoid being polluted by the external environment during transportation, placement, etc., which affects the oil-water separation performance of the oil-water separation material.

Method used

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  • Material and preparation method for ph-controlled transition from superamphiphobic to superhydrophobic/superlipophilic
  • Material and preparation method for ph-controlled transition from superamphiphobic to superhydrophobic/superlipophilic
  • Material and preparation method for ph-controlled transition from superamphiphobic to superhydrophobic/superlipophilic

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Embodiment Construction

[0068] The present invention will be further described below in conjunction with accompanying drawing.

[0069] 1. Synthesis of materials with pH-controlled transition from superamphiphobic to superhydrophobic / superlipophilic

[0070] 1. Synthesis of Fluorinated Copolymers

[0071] Weigh a certain amount of reactant perfluoroalkyl ethyl acrylate, 3-(methacryloyloxy)propyltrimethoxysilane and dimethylaminoethyl methacrylate according to the molar ratio: 8:1:16 , into a 100mL three-necked flask, methyl isobutyl ketone was added as a reaction solvent, and then an appropriate amount (wt=0.5% of the total mass of the substance) of the initiator azobisisobutyronitrile (AIBN) was added, and then nitrogen gas was introduced for 30 minutes, The air was removed, then the temperature was raised to 65°C, and the reaction was carried out for 18 hours. After the reaction is completed, the above solution is precipitated with a large amount of n-hexane, and the obtained precipitate is a flu...

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Abstract

The invention discloses a material changed from super-amphiphilic to super-hydrophobic / super-oleophylic by virtue of pH control and a preparation method thereof. The preparation method comprises the following steps: adding perfluorooctyl iodide modified silicon dioxide nano-particles into a solvent, adding a copolymer after uniform dispersion, mixing the materials uniformly to form a mixed solution, immerging a base material in the mixed solution for a period of time, and performing after-treatment to obtain the material changed from super-amphiphilic to super-hydrophobic / super-oleophylic by virtue of pH control. The chemical structural formula of the copolymer is shown in the specification. By adopting the material disclosed by the invention, the material can be changed from super-amphiphilic to super-hydrophobic / super-oleophylic by virtue of pH control so as to ensure that the material has self-cleaning performance before the use of oil-water separation, and has super-hydrophobic / super-oleophylic separation performance during the use of oil-water separation.

Description

technical field [0001] The invention belongs to the field of oil-water separation materials, and in particular relates to a material and a preparation method for pH-controlled transition from superamphiphobic to superhydrophobic / superlipophilic. Background technique [0002] Oily wastewater mainly includes oilfield wastewater, wastewater from refineries and petrochemical plants, tanker ballast water, tank washing water, engine room water, tanker cleaning water, etc. Oily wastewater is the main source of environmental oil pollution, especially marine oil pollution. With the acceleration of urbanization and industrialization in our country, environmental oil pollution is becoming more and more serious. [0003] The commonly used treatment and purification processes in the treatment of oily wastewater include: activated carbon adsorption, biochemical treatment, secondary deep bed filtration, fine filtration, microfiltration, electrodialysis and reverse osmosis, etc. [0004] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/34C08F220/24C08F230/08B01D17/022
CPCB01D17/02C08F220/34C08F220/24C08F230/08
Inventor 刘利彬党钊郭改兰邢亚男徐元朴朱国富
Owner 山东动向化学有限公司
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