Electret nanofiber filtering material and preparation method thereof

A nanofiber and filter material technology, which is applied in the field of electret nanofiber filter material and its preparation, can solve the problems of low filtration efficiency of fine particles and unstable electret performance, and achieve improved electrostatic effect, low production cost, and high performance retention The effect of stability

Active Publication Date: 2020-06-09
XIAMEN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of electret nanofiber filter material and preparation method thereof, to solve the unstable electret performance of the electret nanofiber filter material existing in the prior art, resulting in the low efficiency of filtering fine particles in the air question

Method used

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  • Electret nanofiber filtering material and preparation method thereof

Examples

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Embodiment 1

[0032] This example 1 provides an electret nanofiber filter material in a preferred embodiment, which is prepared by loading the spinning solution on the support material of the PP melt-blown non-woven fabric through the electrospinning method. Wherein, the spinning solution in this embodiment comprises the following components by weight:

[0033] 13 parts polyacrylonitrile (PAN);

[0034] 3 parts methyl 2-aminothiophene-3-carboxylate; and

[0035] 84 parts of N,N-dimethylformamide solvent.

[0036] The present embodiment 1 also provides the preparation method of above-mentioned material, specifically as follows:

[0037] (1) Weigh 3 parts of methyl 2-aminothiophene-3-carboxylate and add it to a container containing 84 parts of N,N-dimethylformamide solvent, place the container in a water bath at 60°C and heat it. The mixture was stirred until dissolved, and then 13 parts of polyacrylonitrile (PAN) was weighed and added to the above thiophene solution to form a uniform tran...

Embodiment 2

[0050] Example 2 provides another preferred embodiment of the electret nanofiber filter material, which is prepared by loading the spinning solution on the PP spunbonded non-woven support material. In this embodiment, the spinning solution comprises the following components by weight:

[0051] 15 parts polyvinylidene fluoride (PVDF);

[0052] 4 parts 5-amino-2-thiophenecarbaldehyde; and

[0053] 81 parts of N,N-dimethylacetamide solvent.

[0054] The present embodiment also provides the preparation method of above-mentioned material, specifically as follows:

[0055] (1) Weigh 4 parts of 5-methoxy-2 thiophene carboxaldehyde and add it to a container containing 81 parts of N,N-dimethylacetamide solvent, heat the container in a water bath at 60°C, and Stir the mixture until dissolved, then weigh 15 parts of polyvinylidene fluoride (PVDF) and add it to the above thiophene solution to form a uniform and transparent spinning solution.

[0056] (2) Set the parameters of the elec...

Embodiment 3

[0067] This embodiment provides another preferred embodiment of the electret nanofiber filter material, which is prepared by loading the spinning solution on the PP melt-blown non-woven support material, and the spinning solution includes the following components by weight: Minute:

[0068] 22 parts polystyrene (PS);

[0069] 3 parts dimethyl 4-aminothiophene-2,3-dicarboxylate; and

[0070] 75 parts of N,N-dimethylacetamide solvent.

[0071] Present embodiment provides the preparation method of above-mentioned material simultaneously, specifically as follows:

[0072] (1) Weigh 3 parts of dimethyl 4-aminothiophene-2,3-dicarboxylate into a container containing 75 parts of N,N-dimethylacetamide solvent, and place the container in a 60°C water bath Heat and stir the mixture in the container until it dissolves, then weigh 22 parts of polystyrene (PS) and add it to the above thiophene solution to form a uniform transparent solution, that is, a spinning solution.

[0073] (2) Se...

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Abstract

The invention provides an electret nanofiber filtering material and a preparation method thereof, belongs to the technical field of new materials, and solves the technical problem of low filtering efficiency of fine particles in air due to unstable electret performance of the electret nanofiber filtering material in the prior art. The filtering material is prepared from a spinning solution throughelectrostatic spinning, and the spinning solution comprises the following components in parts by weight: 5-30 parts of a polymer, 1-10 parts of thiophene dipole molecules, and 60-94 parts of a solvent, wherein the thiophene dipole molecules are a compound with a dipole structure of an electron donor-pi conjugated system-electron acceptor. The thiophene dipole molecules and the polymer are dissolved together, the air filtering material with high PM2.5 filtering performance, low resistance pressure drop and ideal performance stability is prepared through an electrostatic spinning technology, and the air filtering material has the advantages of being simple in preparation method and low in production cost.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to an electret nanofiber filter material and a preparation method thereof. Background technique [0002] Fine particulate matter in the air refers to particulate matter in the environment with an aerodynamic equivalent diameter less than or equal to 2.5 microns, also known as fine particles, fine particles or PM 2.5 , its small particle size, long residence time in the atmosphere, and long transport distance can cause great harm to human health and easily cause pneumonia, lung function decline and other diseases. It is an effective measure to use air filter materials to protect the fine particles in the air. [0003] At present, traditional air filter materials mainly include meltblown fibers, glass fibers and spunbond fibers. However, traditional air filter materials are generally composed of micron-sized fibers, which have large fiber diameters, large pore sizes between fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/04B01D39/16D01D5/00
CPCB01D39/04B01D39/1623D01D5/003D01D5/0084B01D2239/0407B01D2239/0631B01D2239/10B01D2239/0622B01D2239/0627B01D2239/0618Y02A50/2351
Inventor 谢建达邢家思
Owner XIAMEN UNIV OF TECH
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