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Hydrophilic nanofiber membrane and preparation method thereof

A nanofiber membrane and nanofiber technology, which is applied in the fields of fiber chemical characteristics, spinning solution preparation, rayon manufacturing, etc., can solve the problem of poor air filtration performance of nanofiber membranes, restricting the development of nanofiber membranes, film-forming properties and hydrophilicity To solve the problem of low solubility, achieve good biocompatibility, excellent hygroscopicity and solubility, and enhance the effect of hydrophilicity

Inactive Publication Date: 2021-04-09
广西中科鼎新产业技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Nanofiber membrane has the problems of poor air filtration performance, low film-forming property and hydrophilicity, and short service life, which is not conducive to large-scale use, so it cannot produce higher economic benefits, which seriously restricts the use of nanofiber membranes. develop

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1. Weigh a certain mass of graphene and dissolve it in DMAC to make a 0.3% solution, and stir and mix evenly at 60°C.

[0049] 2. Weigh a certain mass of PVDF, add it into the graphene solution, configure it into an 18% solution and stir evenly.

[0050] 3. Weigh a certain mass of PVP-K-30, add it to the 2 solution, make a 5% solution, and stir evenly.

[0051] 4. The spinning dope in Step 3, which has been stirred evenly, is statically degassed at 60°C.

[0052] 5. The voltage of the spinning solution is 20KV, the propulsion speed is 5μL / min, the distance between the needle and the drum is 17cm, the drum speed is 280r / min, the temperature is controlled at 25°C, and the relative humidity is 25%.

[0053] 6. Soak the membrane in the above 5 in deionized water for 24 hours, to be tested.

Embodiment 2

[0055] 1. Weigh a certain mass of graphene and dissolve it in DMAC to make a 0.4% solution, and stir and mix evenly at 60°C.

[0056] 2. Weigh a certain mass of PVDF, add it into the graphene solution, configure it into an 18% solution and stir evenly.

[0057] 3. Weigh a certain mass of PVP-K-30, add it to the 2 solution, make a 5% solution, and stir evenly.

[0058] 4. The spinning dope in Step 3, which has been stirred evenly, is statically degassed at 60°C.

[0059] 5. The voltage of the spinning solution is 20KV, the propulsion speed is 5μL / min, the distance between the needle and the drum is 17cm, the drum speed is 280r / min, the temperature is controlled at 25°C, and the relative humidity is 25%.

[0060] 6. Soak the membrane in the above 5 in deionized water for 24 hours, to be tested.

Embodiment 3

[0062] 1. Weigh a certain mass of graphene and dissolve it in DMAC to make a 0.5% solution, and stir and mix evenly at 60°C.

[0063] 2. Weigh a certain mass of PVDF, add it into the graphene solution, configure it into an 18% solution and stir evenly.

[0064] 3. Weigh a certain mass of PVP-K-30, add it to the 2 solution, make a 5% solution, and stir evenly.

[0065] 4. The spinning dope in Step 3, which has been stirred evenly, is statically degassed at 60°C.

[0066] 5. The voltage of the spinning solution is 20KV, the propulsion speed is 5μL / min, the distance between the needle and the drum is 17cm, the drum speed is 280r / min, the temperature is controlled at 25°C, and the relative humidity is 25%.

[0067] 6. Soak the membrane in the above 5 in deionized water for 24 hours, to be tested.

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Abstract

The invention discloses a hydrophilic nano-fiber membrane and a preparation method thereof, and relates to the technical field of hydrophilic nano-fiber membranes. The nano-fiber membrane comprises nano-fiber material compositions, and is composed of the following nano-fiber compositions in percentage by mass: 68%-85% of PVDF, 0.9%-2.9% of graphene, and 14%-29% of PVP-K30, wherein the temperature of the mixture is 60 DEG C or above. The air filtering effect of the nanofiber membrane is improved through PVDF, PVP and graphene, graphene is doped, the prepared nanofiber membrane has the hydrophobic characteristic and has the oil-water separation efficiency of 99% or above; the PVP is added into membrane liquid, the membrane forming property of the membrane liquid can be improved, and the PVP is a common membrane liquid additive. The nanofiber membrane prepared from aspirin / PLA / PVP through an electrospinning technology can enhance the hydrophilicity of PLA, and can be repeatedly used through simple cleaning.

Description

technical field [0001] The invention relates to a nanofiber membrane, and relates to the technical field of nanofiber membrane synthesis by electrospinning a mixed solution of PVDF, graphene and PVP-K30, in particular to a hydrophilic nanofiber membrane and a preparation method thereof. Background technique [0002] Nanofibers are fibers with a diameter at the nanometer level and a long length, and the diameter of the nanofiber membrane composed of nanofibers is also at the nanometer level, so the nanofiber membrane inherits the advantages of the nanofiber. Electrospinning electro-visiting nanofiber technology is a mature technology with simple equipment, convenient operation, wide sources of materials for making electro-visiting liquid, and the surface properties and structure of the membrane are not damaged during the electro-spinning process. Therefore, the preparation of nano-fibers The most advanced technology is generally electrospinning technology. The nanofiber membr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4318D04H1/728D04H1/4382D01F6/48D01F1/10D01D1/02
CPCD01D1/02D01F1/10D01F6/48D04H1/4318D04H1/4382D04H1/728
Inventor 唐勋宏黄秋港
Owner 广西中科鼎新产业技术研究院有限公司
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