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Preparation method of electrostatic spun polysulfonamide electret composite filter material

A technology of composite filtration and nano-composite materials, which is applied in the field of preparation of electrospun sulfone fiber electret composite filter materials, can solve the problems of easy breeding of harmful microorganisms, secondary pollution, and insufficient removal of fine particles, and achieve charge storage Enhanced capacity and charge stability, low filtration resistance, and improved filtration efficiency

Inactive Publication Date: 2020-06-05
SHANGHAI WEAVING SCIENCE RESEARCH INSTITUTE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Conventional filter materials rely on the structural characteristics of the material itself to achieve effective filtration of particles, and the removal of fine particles is not thorough enough, and the material itself is easy to breed harmful microorganisms, and there is a possibility of secondary pollution

Method used

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  • Preparation method of electrostatic spun polysulfonamide electret composite filter material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An electrospun polysulfone electret composite filter material, with polysulfone fiber (polysulfone amide) as the matrix, adding PTFE nanoparticles to the polysulfone fiber, and preparing PTFE / polysulfone fiber nanocomposite fibers by electrospinning technology The membrane was prepared according to the following steps:

[0030] 1) Configuration of PTFE dispersion:

[0031] Dispersing 0.12g of PTFE nanoparticles in 5ml of N,N-dimethylformamide solvent, and ultrasonicating for 20-60min to obtain a solvent dispersion of PTFE nanoparticles, the diameter of the PTFE nanoparticles is 100-150nm;

[0032] 2) The configuration of PTFE / sulfonamide spinning solution:

[0033] Weigh 100g of polysulfone amide spinning solution with a mass fraction of 12%, add the solvent dispersion of the above-mentioned PTFE nanoparticles and mix, stir the mixed solution for 30min at a speed of 20000r / min with a high-shear emulsifying disperser, and then mix the mixed solution Ultrasonic degassin...

Embodiment 2

[0040] A kind of electrospun aryl sulfone fiber electret composite filter material, similar to embodiment 1, is prepared according to the following steps:

[0041](1) Configuration of PTFE dispersion:

[0042] Disperse 0.18 g of polytetrafluoroethylene nanoparticles in 5 ml of N,N-dimethylformamide solvent, and sonicate for 20 to 60 minutes to obtain a solvent dispersion of polytetrafluoroethylene nanoparticles.

[0043] (2) Configuration of tetrafluoroethylene / arylsulfon fiber spinning solution:

[0044] Take by weighing 100g mass fraction and be the polysulfone amide spinning solution of 12%, add the solvent dispersion liquid of above-mentioned polytetrafluoroethylene nanoparticles and mix, stir the mixed solution for 30min with the speed of 20000r / min with high-shear emulsification disperser, then Put the mixed solution into an ultrasonic bath for degassing for 120 minutes to form a uniformly mixed tetrafluoroethylene / arylsulfonamide spinning solution.

[0045] (3) Electr...

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Abstract

The invention relates to a preparation method of an electrostatic spun polysulfonamide electret composite filter material. Polysulfonamide is taken as a matrix, polytetrafluoroethylene (PTFE) nano particles are added into the polysulfonamide, and a PTFE / polysulfonamide nano composite fiber membrane is prepared by an electrostatic spinning technology. The preparation method is simple in process andhigh in operability, PTEF nano electrets in the PTFE / polysulfonamide electret nano composite fiber filter material are uniformly distributed in the composite fiber through a mixing process and an electrostatic spinning process, and the charge storage capacity and the charge stability of the electret material are enhanced through the action of a high-voltage electric field in the electrostatic spinning process. The obtained PTFE / polysulfonamide electret nano composite fiber filtering material is high in filtering performance and small in filtering resistance.

Description

technical field [0001] The invention relates to an air filter material, in particular to a preparation method of an electrospun arylsulfone fiber electret composite filter material. Background technique [0002] With the rapid development of the economy, human beings have produced a large number of dust particles, chemical substances, harmful microorganisms, etc. in the process of industrial production and natural activities, which seriously endanger the quality of the environment and people's health. The emergence and spread of the 2020 novel coronavirus pneumonia It has aroused people's extreme attention to the field of air filtration, and effective control of harmful substances in the air is a major problem that needs to be solved urgently. [0003] Conventional filter materials rely on the structural characteristics of the material itself to achieve effective filtration of particles, but the removal of fine particles is not thorough enough, and the material itself is eas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D69/12B01D71/68B01D46/54
CPCB01D46/543B01D67/0002B01D69/12B01D71/68
Inventor 邢亚均付昌飞李赛顾进石浩然
Owner SHANGHAI WEAVING SCIENCE RESEARCH INSTITUTE CO LTD
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