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A kind of electrospun polyimide nanofiber high temperature filter material

A high-temperature filter material, polyimide technology, applied in filtration separation, membrane filter, dispersed particle filtration, etc., can solve the problems of low production efficiency of electrospinning, and achieve high production cost, low production efficiency and high production efficiency. high effect

Active Publication Date: 2019-12-03
太湖方舟新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low production efficiency of electrospinning, in 1930, there was an electrostatic patent on spinning technology in the United States, and there were almost no other reports except for the partial application of filters

Method used

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  • A kind of electrospun polyimide nanofiber high temperature filter material
  • A kind of electrospun polyimide nanofiber high temperature filter material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The filter material is prepared by the following method: the first ODA raw material is provided; the first ODA raw material is dissolved in DMAc solvent to obtain the first solution; PMDA and phthalic anhydride are added to the first solution to obtain the second solution; the second solution is Stir and carry out a water bath to obtain the first PAA solution; add the first PAA solution into the syringe, and use the electrospinning method to form the first PAA non-woven fiber layer on the substrate; provide the second ODA raw material; the second ODA The raw material is dissolved in DMAc solvent to obtain the third solution; BTDA is added to the third solution to obtain the second PAA solution; the second PAA solution is added to the syringe, and the second PAA fiber layer is formed on the first PAA fiber layer by electrospinning. The PAA fiber layer is obtained to obtain a fiber laminate; the fiber laminate is subjected to heat imidization treatment; and the fiber lamin...

Embodiment 2

[0018] The filter material is prepared by the following method: the first ODA raw material is provided; the first ODA raw material is dissolved in DMAc solvent to obtain the first solution; PMDA and phthalic anhydride are added to the first solution to obtain the second solution; the second solution is Stir and carry out a water bath to obtain the first PAA solution; add the first PAA solution into the syringe, and use the electrospinning method to form the first PAA non-woven fiber layer on the substrate; provide the second ODA raw material; the second ODA The raw material is dissolved in DMAc solvent to obtain the third solution; BTDA is added to the third solution to obtain the second PAA solution; the second PAA solution is added to the syringe, and the second PAA fiber layer is formed on the first PAA fiber layer by electrospinning. The PAA fiber layer is obtained to obtain a fiber laminate; the fiber laminate is subjected to heat imidization treatment; and the fiber lamin...

Embodiment 3

[0020]The filter material is prepared by the following method: the first ODA raw material is provided; the first ODA raw material is dissolved in DMAc solvent to obtain the first solution; PMDA and phthalic anhydride are added to the first solution to obtain the second solution; the second solution is Stir and carry out a water bath to obtain the first PAA solution; add the first PAA solution into the syringe, and use the electrospinning method to form the first PAA non-woven fiber layer on the substrate; provide the second ODA raw material; the second ODA The raw material is dissolved in DMAc solvent to obtain the third solution; BTDA is added to the third solution to obtain the second PAA solution; the second PAA solution is added to the syringe, and the second PAA fiber layer is formed on the first PAA fiber layer by electrospinning. The PAA fiber layer is obtained to obtain a fiber laminate; the fiber laminate is subjected to heat imidization treatment; and the fiber lamina...

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Abstract

A high-temperature filtering material of electrospun polyimide nanofibers. The filtering material is prepared by means of the following method: providing a first ODA raw material; dissolving the first ODA raw material in a DMAc solvent so as to obtain a first solution; adding PMDA and a phthalic anhydride to the first solution so as to obtain a second solution; stirring the second solution and subjecting same to a water bath so as to obtain a first PAA solution; adding the first PAA solution to an injector, and forming a first PAA non-woven fabric fiber layer on a substrate by using an electrostatic spinning method; providing a second ODA raw material; dissolving the second ODA raw material in the DMAc solvent so as to obtain a third solution; adding BTDA to the third solution so as to obtain a second PAA solution; adding the second PAA solution to an injector, and forming a second PAA fiber layer on the first PAA fiber layer by using the electrostatic spinning method so as to obtain a fiber laminate; subjecting the fiber laminate to a thermal imidization treatment; and carrying out a heat treatment on the fiber laminate, which has been subjected to the thermal imidization treatment.

Description

technical field [0001] The invention relates to the field of environmental protection materials, in particular to an electrospun polyimide nanofiber high-temperature filter material. Background technique [0002] With the rapid development of the global economy and the increasing energy consumption, the high-temperature flue gas and dust produced by electric power, building materials, metallurgy, steel, chemical industry and automobile exhaust have caused serious pollution to the atmosphere. However, general air filter materials are not effective in filtering dust that is too small, especially PM2.5 particles in the air, which mainly cause damage to the respiratory system and cardiovascular system, and are even more harmful to human health. Electrospun nanofibers are very suitable as high-efficiency gas filtration materials due to their unique properties, such as large specific surface area, good permeability, small pore size, and good connectivity of pores. Therefore, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/14B01D46/02C08G73/10D04H1/728D04H1/4334
CPCB01D39/14B01D46/02B01D2239/06C08G73/1071D04H1/4334D04H1/728
Inventor 邵鹏
Owner 太湖方舟新材料科技有限公司