Preparation method of electric spinning-based composite nano fiber material for filters

A technology of composite nanofibers and electrospun nanofibers, applied in chemical instruments and methods, filtration separation, separation methods, etc., can solve the problem that the overall quality of the product cannot be guaranteed, it is difficult to detect and ensure the uniformity of nanofibers, and the continuity of spinning It is difficult to guarantee the stability of the spinning rate and other problems, and achieve the effects of low manufacturing cost, small increase in filtration resistance, and reduced wear

Inactive Publication Date: 2010-09-15
BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this technology are: the nanofiber membrane is directly spun on the conventional filter material, it is difficult to detect and ensure the uniformity of the nanofiber, so the overall quality of the product cannot be guaranteed; to ensure the quality of the product, the conventional filter must be adjusted. The feeding speed of cloth and the consistency of spinning rate, while the continuity of spinning and the stability of spinning rate are difficult to guarantee in the current process

Method used

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  • Preparation method of electric spinning-based composite nano fiber material for filters

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Embodiment 1

[0024] A certain quality of polyester chips (PET) is dissolved in trifluoroacetic acid and dichloromethane volume ratio in the mixed solvent of 4: 1, the mass fraction of the solution is 13%, at room temperature into a stable, uniform solution, stand After a few minutes, inject the resulting solution into the electrospinning device to obtain a PET electrospun fiber membrane; then place the membrane between No. 1 industrial filter cloth and glass fiber and heat press at 180°C to form a sandwich composite nanofiltration material .

Embodiment 2

[0026] A certain mass of polyacrylonitrile (PAN) is dissolved in N, N-dimethylformamide (DMF), the mass fraction of the solution is 10%, and it becomes a stable and uniform solution at room temperature. After standing for a few minutes, The resulting solution was injected into an electrospinning device to prepare a PAN electrospun fiber membrane; then the membrane was placed between No. 1 industrial filter cloth and glass fiber and hot-pressed at 180°C to form a sandwich composite nanofiltration material.

Embodiment 3

[0028] A certain mass of nylon (PA6) particles was dissolved in a mixed solvent with a volume ratio of formic acid and glacial acetic acid of 8:2, the mass fraction of the solution was 12%, and it became a stable and uniform solution at room temperature. After standing for a few minutes, The resulting solution was injected into an electrospinning device to prepare a PA6 electrospun fiber membrane; then the membrane was placed between No. 1 industrial filter cloth and glass fiber and hot-pressed at 180°C to form a sandwich composite nanofiltration material.

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Abstract

The invention relates to a preparation method of an electric spinning-based composite nano fiber material for filters, comprising the following steps of: preparing an electric spinning nano fiber film with reliable quality by adopting a polymer solution or a fusant through an electrostatic spinning device, and combining the electric spinning nano fiber film with a conventional filtering material to form a sandwich composite nano filtering material. Compared with the prior art, the nano fiber film with reliable quality in the invention can filter particles of 1 micrometer, and the filtering efficiency is 100%; the conventional filtering material and coarse fibers not only are used as supporting materials, but also can filter larger particles in advance, and the preparation method reduces the abrasion of the nano fiber film, prolongs the service life of the composite nano filtering material, reduces the updating time of the composite nano filtering material, and lowers filtering expenses.

Description

technical field [0001] The invention relates to a method for preparing an electrospinning-based composite nanofiber material for a filter device, and belongs to the technical field of preparation of protective filter materials. Background technique [0002] At present, environmental pollution seriously threatens human health and has become a top priority affecting human survival and social development. With the enhancement of people's awareness of environmental protection, people have realized the importance of environmental protection, and governments of various countries have also introduced policies to strengthen environmental protection. Among all kinds of environmental pollution, air pollution and water pollution have attracted people's attention, because they directly affect personal safety and human life quality. The national "Tenth Five-Year" environmental protection construction has invested a huge amount of money, environmental pollution has been reduced, and the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/16B32B5/26B32B7/08
Inventor 李从举王伟媛王娇娜
Owner BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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