PMIA super-hydrophobic nano-fiber membrane for oil water separation and preparation method thereof

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

Active Publication Date: 2018-12-07
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

Benefits of technology

This patented technology describes methods for creating high water repellency (WFR) materials made from nylon-6 fibers or other types of molecules called polyimides. These materials have unique structures formed during manufacturing processes such as UV light exposure, deposition of aminopyridines onto it, and subsequent photooxidative reactions between certain chemicals like formaldehydes and nitrous acid. By adding this special material into these porcelain filters, they become more effective at separating oily liquids compared to traditional filter media.

Problems solved by technology

This patents describes different ways to improve the effectiveness and efficiency of separating materials like liquids containing dissolved substances due to their unique physico-physiological attributes called oleophyrosis. Specifically, these techniques involve combining specific types of components together to create effective solutions without causing negative effects on each others' healthy environment. Additionally, this technique involves developing a type of nanofibrous membrane that combines excellent physical properties but does not require complicated processes during production.

Method used

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  • PMIA super-hydrophobic nano-fiber membrane for oil water separation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Add poly-m-phenylene isophthalamide and lithium chloride to N,N-dimethylacetamide, stir until completely dissolved, then add polyethylene glycol, heat and stir evenly, after vacuum deaeration Inject into the electrospinning device and perform electrospinning to prepare PMIA nanofiber membrane; the electrospinning voltage is 14kV, the receiving distance is 16cm, and the spinning hole diameter is 300nm; the weight of each raw material is polyisoxylene 13 parts by weight of metaphenylene diamine, 4 parts by weight of lithium chloride, 76 parts by weight of N,N-dimethylacetamide, and 7 parts by weight of polyethylene glycol;

[0035] (2) Pretreat the nanofiber membrane prepared in step (1) with fluorine-containing alkyl silane, add aniline hydrochloride and titanium dioxide into water to disperse uniformly to make a mixed solution, and then spray and deposit the mixed solution on the pretreated nanofiber The surface of the film is subjected to oxidative polymerization unde...

Embodiment 2

[0039] (1) Add poly-m-phenylene isophthalamide and lithium chloride to N,N-dimethylacetamide, stir until completely dissolved, then add polyethylene glycol, heat and stir evenly, after vacuum deaeration Inject into the electrospinning device and perform electrospinning to prepare PMIA nanofiber membrane; the electrospinning voltage is 13kV, the receiving distance is 16cm, and the spinning hole diameter is 300nm; the weight of each raw material is polyisoxylene 13 parts by weight of metaphenylene diamine, 3 parts by weight of lithium chloride, 78 parts by weight of N,N-dimethylacetamide, and 6 parts by weight of polyethylene glycol;

[0040] (2) Pretreat the nanofiber membrane prepared in step (1) with fluorine-containing alkyl silane, add aniline hydrochloride and titanium dioxide into water to disperse uniformly to make a mixed solution, and then spray and deposit the mixed solution on the pretreated nanofiber The surface of the film is oxidized and polymerized under ultraviolet...

Embodiment 3

[0044] (1) Add poly-m-phenylene isophthalamide and lithium chloride to N,N-dimethylacetamide, stir until completely dissolved, then add polyethylene glycol, heat and stir evenly, after vacuum deaeration Inject into the electrospinning device and perform electrospinning to prepare PMIA nanofiber membrane; the electrospinning voltage is 17kV, the receiving distance is 17cm, and the spinning hole diameter is 400nm; the weight of each raw material is polyisoxylene 15 parts by weight of metaphenylene diamine, 5 parts by weight of lithium chloride, 72 parts by weight of N,N-dimethylacetamide, and 8 parts by weight of polyethylene glycol;

[0045] (2) Pretreat the nanofiber membrane prepared in step (1) with fluorine-containing alkyl silane, add aniline hydrochloride and titanium dioxide into water to disperse uniformly to make a mixed solution, and then spray and deposit the mixed solution on the pretreated nanofiber The surface of the film is oxidized and polymerized under ultraviolet...

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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

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Claims

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Application Information

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Owner 四川好鑫量子科技有限公司
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