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A kind of PMIA superhydrophobic nanofiber membrane and preparation method for oil-water separation

A nanofiber membrane and oil-water separation technology, which is applied in separation methods, liquid separation, semi-permeable membrane separation, etc., can solve the problems of poor hydrophobic performance of nanofiber membranes for oil-water separation, the efficiency of oil-water separation needs to be improved, and the low efficiency of oil-water separation. Achieve the effects of good mechanical properties, good hydrophobic properties, and improved hydrophobic properties

Active Publication Date: 2021-01-15
四川好鑫量子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrophobic performance of the oil-water separation nanofiber membrane prepared by the invention is poor, and the oil-water separation efficiency needs to be improved
[0007] In summary, the nanofiber membranes used for oil-water separation in the prior art have defects such as low mechanical strength, poor hydrophobicity, and low oil-water separation efficiency, which limit the application and development of nanofiber membranes in the field of oil-water separation. Therefore, it is of great significance to develop a superhydrophobic nanofibrous membrane with good mechanical properties and high oil-water separation efficiency.

Method used

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  • A kind of PMIA superhydrophobic nanofiber membrane and preparation method for oil-water separation

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Effect test

Embodiment 1

[0034] (1) Add polym-phenylene isophthalamide and lithium chloride into N,N-dimethylacetamide, stir until completely dissolved, then add polyethylene glycol, heat and stir evenly, after vacuum defoaming Inject into electrospinning device, carry out electrospinning, make PMIA nanofiber film; The voltage of electrospinning is 14kV, and the receiving distance is 16cm, and the aperture of spinning hole is 300nm; The weight part of each raw material is, polyisophthalylene 13 parts by weight of m-phenylenediamide, 4 parts by weight of lithium chloride, 76 parts by weight of N,N-dimethylacetamide, 7 parts by weight of polyethylene glycol;

[0035] (2) Use fluorine-containing alkyl silane to pretreat the nanofiber membrane prepared in step (1), add aniline hydrochloride and titanium dioxide to water and disperse evenly to form a mixed solution, and then spray the mixed solution to deposit on the pretreated nanofibers Membrane surface, carry out oxidative polymerization reaction under ...

Embodiment 2

[0039] (1) Add polym-phenylene isophthalamide and lithium chloride into N,N-dimethylacetamide, stir until completely dissolved, then add polyethylene glycol, heat and stir evenly, after vacuum defoaming Inject into electrospinning device, carry out electrospinning, make PMIA nanofiber film; The voltage of electrospinning is 13kV, and the receiving distance is 16cm, and the aperture of spinning hole is 300nm; 13 parts by weight of m-phenylenediamide, 3 parts by weight of lithium chloride, 78 parts by weight of N,N-dimethylacetamide, 6 parts by weight of polyethylene glycol;

[0040] (2) Use fluorine-containing alkyl silane to pretreat the nanofiber membrane prepared in step (1), add aniline hydrochloride and titanium dioxide to water and disperse evenly to form a mixed solution, and then spray the mixed solution to deposit on the pretreated nanofibers Membrane surface, carry out oxidative polymerization reaction under ultraviolet radiation, make the PMIA nanofiber membrane of p...

Embodiment 3

[0044] (1) Add polym-phenylene isophthalamide and lithium chloride into N,N-dimethylacetamide, stir until completely dissolved, then add polyethylene glycol, heat and stir evenly, after vacuum defoaming Inject into electrospinning device, carry out electrospinning, make PMIA nanofiber membrane; The voltage of electrospinning is 17kV, and the receiving distance is 17cm, and the aperture of spinning hole is 400nm; 15 parts by weight of m-phenylenediamide, 5 parts by weight of lithium chloride, 72 parts by weight of N,N-dimethylacetamide, 8 parts by weight of polyethylene glycol;

[0045] (2) Use fluorine-containing alkyl silane to pretreat the nanofiber membrane prepared in step (1), add aniline hydrochloride and titanium dioxide to water and disperse evenly to form a mixed solution, and then spray the mixed solution to deposit on the pretreated nanofibers Membrane surface, carry out oxidative polymerization reaction under ultraviolet radiation, make the PMIA nanofiber membrane ...

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Abstract

The invention belongs to the technical field of oil water separation, and provides a PMIA super-hydrophobic nano-fiber membrane for oil water separation and a preparation method thereof. The method comprises the following steps: pretreating a PMIA nano-fiber membrane prepared by electrostatic spinning; spraying and depositing aniline hydrochloride and titanium dioxide mixed solution to the surfaceof the fiber membrane; performing ultraviolet radiation, and polymerizing to generate polyaniline nano-particles; loading to the surface of the fiber membrane, and further performing surface etchingto prepare the PMIA super-hydrophobic nano-fiber membrane for oil water separation. Compared with the prior art, the PMIA super-hydrophobic nano-fiber membrane has excellent super-hydrophobic performance and high oil-water separation efficiency, has good mechanical performance, heat resistance and corrosion resistance, and good durability; and the preparation process is simple and environment-friendly, and can be widely applied to the field of oil water separation.

Description

technical field [0001] The invention belongs to the technical field of oil-water separation, and provides a PMIA superhydrophobic nanofiber membrane for oil-water separation and a preparation method thereof. Background technique [0002] Oil-water separation is an important industrial process for treating oily wastewater and water-containing oil. The amount of oily wastewater is large and wide. A large amount of oily wastewater will be generated in the petroleum industry, manufacturing industry, transportation, food and catering and other industries. From water reuse, oil recovery Considering several aspects such as environmental management and environmental management, the treatment of oily wastewater is extremely urgent and necessary. On the other hand, the harm of water in water-containing oil is reflected in the links of transportation, processing, storage and use. Oil-water separation technology has been valued by countries all over the world. [0003] At present, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/60B01D69/02B01D67/00C02F1/40C02F1/44
CPCB01D67/0002B01D69/02B01D71/60B01D2323/04C02F1/40C02F1/44
Inventor 蔡菁菁
Owner 四川好鑫量子科技有限公司