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A kind of oil-water separation membrane based on oxime urethane bond, preparation method and application thereof

A technology of oil-water separation membrane and oxime carbamate, which is applied in the direction of separation method, immiscible liquid separation, liquid separation, etc., can solve the problems of high energy consumption, uncontrollable fiber structure, poor durability, etc., and achieve simple operation and high fiber structure adjustable effect

Active Publication Date: 2022-07-01
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of traditional polynanofiber materials such as uncontrollable fiber structure, poor durability, incapable of macro-preparation and high energy consumption in the preparation process, and provide an oil-water separation membrane based on oxime urethane bonds, a preparation method and its application

Method used

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  • A kind of oil-water separation membrane based on oxime urethane bond, preparation method and application thereof
  • A kind of oil-water separation membrane based on oxime urethane bond, preparation method and application thereof
  • A kind of oil-water separation membrane based on oxime urethane bond, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) After reacting diacetyl oxime and diphenylmethane diisocyanate with a molar ratio of 1:1 in dichloromethane at 30° C. for 3 hours, the solvent was removed by a rotary evaporator to obtain an oxime-containing urethane bond of compound 1.

[0040] Oximes containing multifunctional groups can also be selected from: butanedione oxime, benzophenone oxime, dichloroglyoxime, ceftizoxime sodium, benzamide oxime, bis(2-pyridine) ketone oxime, 2-pyridyl oxime Amidoxime, 4-methyl-2-pentanone oxime, tetrabutanone oximosilane, 2,4-pentanedione dioxime, phenyl-2-pyridyl ketoxime;

[0041] Compounds containing isocyanate groups can be selected from: p-phenylene diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, hexamethylene diisocyanate, diphenylmethane diisocyanate, toluene diisocyanate or 1,3-benzene diisocyanate;

[0042] (2) Mix 1.00g of the compound containing an oxime urethane bond with 10.00mL of N,N-dimethylformamide at room temperature, then add 1...

Embodiment 2

[0049] The compound 1 containing an oxime urethane bond obtained in Example 1 and 10.00 mL of N,N-dimethylformamide were thoroughly mixed at room temperature, and then 0.8 g of polyvinylidene fluoride was added, mixed well, and allowed to stand for 30 min The electrospinning stock solution 2 can be obtained in the above manner.

[0050] The electrospinning stock solution 2 is then electrospun at a temperature of 25° C. and a humidity of 45%, and the spun nanofiber membrane is placed in a vacuum drying oven to evaporate the solvent to obtain an oxime urethane bond-based product. Oil-water separation membrane 2. Other steps are the same as in Example 1.

Embodiment 3

[0052] The compound 1 containing an oxime urethane bond obtained in Example 1 and 10.00 mL of N,N-dimethylformamide were fully mixed at room temperature, and then 0.6 g of polyvinylidene fluoride was added, mixed well, and allowed to stand for 30 min In the above, the electrospinning dope 3 can be obtained.

[0053] The electrospinning stock solution 3 is then electrospun in an environment with a temperature of 15° C. and a humidity of 43%, and the spun nanofiber membrane is placed in a vacuum drying oven to evaporate the solvent to obtain an oxime-based urethane bond. The oil-water separation membrane 3. Other steps are the same as in Example 1.

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Abstract

The invention discloses a preparation method and application of an oil-water separation membrane based on an oxime urethane bond, and belongs to the field of material preparation. The preparation method of the oil-water separation membrane based on the oxime urethane bond of the present invention takes the synthesis of the compound containing the oxime urethane bond and the polyvinylidene fluoride as the solute, and the spinning solution with N,N-dimethylformamide as the solvent is passed through electrostatic The nanofiber oil-water separation membrane was prepared by spinning. The different contents of compounds containing oxime urethane bonds and polyvinylidene fluoride can control the fiber structure of the nanofibers and the size under the microscopic morphology, and because the oil-water separation membrane has pores It can be used for the separation of organic solvent and water because of its characteristics and hydrophobicity; the reaction conditions of the invention are mild, the synthesis process is simple, the energy consumption is small, and the post-treatment is simple and green. The invention solves the problems that the nanofiber material consumes a lot of energy during the preparation process and cannot be prepared on a large scale.

Description

technical field [0001] The invention belongs to the field of material preparation, in particular to an oil-water separation membrane based on an oxime urethane bond, a preparation method and an application thereof. Background technique [0002] With the development of my country's petroleum industry, a large amount of oily sewage has been produced, which has brought enormous pressure to environmental protection. In addition, the leakage of crude oil caused by damage to facilities such as onshore oilfield gathering and transportation pipelines, submarine oil pipeline networks, and underwater wellheads has also brought huge pollution to the environment and seriously threatened the safety of the ecosystem and human society. Therefore, how to treat oily wastewater efficiently and quickly is an important environmental problem that needs to be solved urgently. At present, the most effective method to treat oily wastewater is membrane separation technology. [0003] In recent yea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D69/02B01D67/00B01D71/34D01F6/48D01F1/10D04H1/4318D04H1/728B01D17/02
CPCB01D69/02B01D67/0002B01D71/34D01F6/48D01F1/10D04H1/4318D04H1/728B01D17/085B01D2325/38
Inventor 陈香李李康康李彪
Owner SHAANXI UNIV OF SCI & TECH
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