Micro-nanofiber membrane as well as preparation method and application thereof

A micro-nano fiber and nano-fiber technology, applied in the field of filter materials, can solve the problem that the filtering effect needs to be improved

Pending Publication Date: 2022-07-08
深圳维度新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the filtration effect of the nanofibrous membranes prepared by the solution jet spinning method on oily substances needs to be improved.

Method used

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  • Micro-nanofiber membrane as well as preparation method and application thereof
  • Micro-nanofiber membrane as well as preparation method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0032] see figure 1 , the embodiment of the present application also provides a preparation method of a micro-nano fiber membrane, comprising the following steps:

[0033] Step S01: dissolving polystyrene in a solvent to obtain a polystyrene solution;

[0034] Step S02: adding polyvinylidene fluoride to the polystyrene solution to obtain a spinning solution;

[0035] Step S03: Spinning the spinning solution by using a solution jet spinning method, and collecting the spinning using a collecting device to obtain the micro-nano fiber membrane, wherein the spinning distance is 15-100 cm, and the air velocity is 10-100 cm. 20slpm, the spinning solution jet speed is 20~30μL / min.

[0036] In the step S01:

[0037] The solvent may be selected from, but not limited to, N,N-dimethylformamide (DMF), dimethylsulfoxide (DMSO), dimethylacetamide (DMAC), N-methylpyrrolidone (NMP), phosphoric acid At least one of triethyl ester (TEP) and acetone.

[0038] In some embodiments, after disso...

Embodiment 1

[0049] Dissolve 0.5 g of polystyrene in a mixed solution of 3 g of acetone and 7 g of DMF, and stir at room temperature for 1 h at a rotational speed of 800 rpm to obtain a polystyrene solution;

[0050] Add 1 g of polyvinylidene fluoride to the polystyrene solution, and stir at 800 rpm for 6 hours at 60° C. to obtain a spinning solution;

[0051] The spinning solution is spun by a solution jet spinning method, and the spinning is collected and spun using a roller to obtain a micro-nanofiber membrane, wherein the spinning spacing is 30 cm, the air velocity is 15 slpm, and the spinning solution jet velocity is 20 μL / min.

Embodiment 2

[0053] Dissolve 0.5 g of polystyrene in a mixed solution of 2 g of acetone and 8 g of DMF, and stir at room temperature for 1.5 h at a rotational speed of 850 rpm to obtain a polystyrene solution;

[0054] Add 1 g of polyvinylidene fluoride into the polystyrene solution, and stir at 850 rpm for 6.5 hours at 60° C. to obtain a spinning solution;

[0055] The spinning solution is spun by a solution jet spinning method, and the spinning solution is collected and spun using a collecting device to obtain the micro-nanofiber membrane, wherein the spinning distance is 25 cm, the air velocity is 15 slpm, and the spinning solution jetting speed is 25 cm. 20 μL / min.

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Abstract

The invention discloses a micro-nanofiber membrane, the micro-nanofiber membrane is mainly composed of polymer nanofibers, polymers in the polymer nanofibers comprise polyvinylidene fluoride and polystyrene, and the micro-nanofiber membrane comprises nanoscale fibers and micron-sized fibers. The micro-nano fiber membrane provided by the invention has excellent hydrophobic and oleophylic characteristics, can effectively remove oil from oil-containing water, and can also filter and remove solid particles in an oil-water mixture. In addition, the invention further discloses a preparation method and application of the micro-nanofiber membrane.

Description

technical field [0001] The present application relates to the technical field of filter materials, and in particular, to a micro-nano fiber membrane, and a preparation method and application of the micro-nano fiber membrane. Background technique [0002] The traditional preparation method of nanofiber membrane is electrospinning method. The polymer solution or melt is sprayed in a strong electric field. Under the action of the electric field, the droplet at the needle will change from a spherical shape to a "Taylor cone". The conical tip is extended to obtain fiber filaments. This spinning method can produce nanometer-diameter polymer filaments, but it has problems such as inefficiency, energy consumption, and danger of high pressure. [0003] Solution jet spinning technology is a new type of nanofiber preparation method. The polymer is dissolved in a solvent to make a spinning solution. When the spinning solution is extruded from the spinneret hole, it is blown by the surr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D69/08B01D71/28B01D71/34B01D63/02B01D17/02
CPCB01D69/081B01D71/34B01D71/28B01D69/085B01D69/087B01D63/02B01D17/085B01D17/02B01D17/0202B01D2325/38
Inventor 李勃刘奕博王峰张晗莫宏宇
Owner 深圳维度新材料有限公司
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