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A kind of electret nanofiber filter 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 improved interception The effect of action

Active Publication Date: 2022-07-12
XIAMEN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of electret nanofiber filter material and preparation method thereof

Examples

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Embodiment 1

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

[0033] 13 parts polyacrylonitrile (PAN);

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

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

[0036] The present embodiment 1 also provides the preparation method of the above-mentioned materials, which is 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, and place the container in a 60°C water bath. The mixture was stirred until dissolved, and then 13 parts of polyacrylonitrile (PAN) were weighed and added to the above-mentio...

Embodiment 2

[0050] This Example 2 provides another preferred embodiment of the electret nanofiber filter material, which is prepared by supporting the spinning solution on a PP spunbond non-woven fabric support material. In this embodiment, the spinning solution includes the following components by weight:

[0051] 15 parts polyvinylidene fluoride (PVDF);

[0052] 4 parts of 5-amino-2thiophenecarboxaldehyde;

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

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

[0055] (1) Weigh 4 parts of 5-methoxy-2thiophenecarboxaldehyde and add it to a container containing 81 parts of N,N-dimethylacetamide solvent, place the container in a 60°C water bath and heat it, and heat the container. The mixture was stirred until dissolved, and then 15 parts of polyvinylidene fluoride (PVDF) were weighed and added to the above thiophene solution to prepare a uniform and transparent spinning ...

Embodiment 3

[0067] This example provides another preferred embodiment of the electret nanofiber filter material, which is prepared by supporting a spinning solution on a PP melt-blown nonwoven 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;

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

[0071] The present embodiment also provides the preparation method of the above-mentioned materials, the details are 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, place the container in a 60°C water bath Heating, stirring the mixture in the container until dissolved, then weighing 22 parts of polystyrene (PS) and adding it to the above-mentioned thiophene solution to prepare a uniform and transparent solution, that is, a spinning solution. ...

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Abstract

The invention provides an electret nanofiber filter material and a preparation method thereof, which belongs to the technical field of new materials, and solves the problem that the electret nanofiber filter material in the prior art has unstable electret performance, which causes fine particles in the air to be polluted. Technical problems with low filtration efficiency. The filter material is prepared from spinning solution by electrospinning, wherein the spinning solution includes the following components in parts by weight: 5-30 parts of polymers; 1-10 parts of thiophene dipole molecules; and 60-94 parts of solvent; wherein, the thiophene-based dipole molecule is a compound having a dipole structure of electron donor-π conjugated system-electron acceptor. In the present invention, the thiophene type dipole molecules and the polymer are co-dissolved, and the electrospinning technology is used to prepare high PM 2.5 The air filter material with filtering performance, low resistance pressure drop, and maintaining ideal performance stability has the advantages of simple preparation method and low 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 the particulate matter with aerodynamic equivalent diameter of less than or equal to 2.5 microns in the environment, also known as fine particles, fine particles or PM 2.5. Its particle size is small, the residence time in the atmosphere is long, and the conveying distance is long. It can cause great harm to human health and easily lead to various diseases such as pneumonia and decreased lung function. 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 fibers, which have large fiber diamete...

Claims

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Application Information

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Patent Type & Authority Patents(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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