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Composite electret fiber filtering material

A technology of fiber filtration and composite materials, which is applied in the direction of filtration separation, fiber chemical characteristics, conjugated synthetic polymer artificial filaments, etc., can solve the problem that the filtration efficiency cannot be guaranteed, and the multi-functional advantages of dust removal and sterilization cannot be fully utilized. Charge instability and other issues, to achieve excellent filtration efficiency, charge stability improvement, high-efficiency filtration performance

Active Publication Date: 2009-07-08
TONGXIANG JIANMIN FILTER MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of the existing electret air filter material is that the charge is unstable, so that the filtration efficiency cannot be guaranteed, and the multifunctional advantages of dust removal and sterilization cannot be fully utilized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 Preparation of polytetrafluoroethylene / polypropylene composite electret filter material

[0028] (1) Composite polytetrafluoroethylene film and base film material to obtain a composite material;

[0029] (2) injecting the composite material to obtain a composite electret film;

[0030] (3) The composite electret film is stretched to make fibers, and then formed into a net to obtain the product. The polytetrafluoroethylene film is prepared by the following method: mixing the polytetrafluoroethylene dispersion resin with a liquid additive, making the rod into a thin sheet by calendering, and then stretching in one direction by a machine to obtain a polytetrafluoroethylene film. Ethylene film, polytetrafluoroethylene film thickness of 60 μm.

[0031] The base film material is selected from polypropylene, and the base film material is produced by extrusion blow molding.

[0032] Step (1) Composite using the following method: cover the polytetrafluoroethylene fi...

Embodiment 2

[0033] Example 2 Preparation of polytetrafluoroethylene / polyethylene composite electret filter material

[0034] (1) Composite polytetrafluoroethylene film and base film material to obtain a composite material;

[0035] (2) injecting the composite material to obtain a composite electret film;

[0036] (3) The composite electret film is stretched to make fibers, and then formed into a net to obtain the product.

[0037] The polytetrafluoroethylene film is prepared by the following method: mixing the polytetrafluoroethylene dispersion resin with a liquid additive, making the rod into a thin sheet by calendering, and then stretching in one direction by a machine to obtain a polytetrafluoroethylene film. Ethylene film, polytetrafluoroethylene film thickness of 60 μm.

[0038] The base film material is selected from polyethylene, and the base film material is produced by extrusion blow molding.

[0039] Step (1) Composite using the following method: cover the polytetrafluoroethy...

Embodiment 3

[0040] Example 3 Preparation of polytetrafluoroethylene / polyethylene terephthalate composite electret filter material

[0041] (1) Composite polytetrafluoroethylene film and base film material to obtain a composite material;

[0042] (2) injecting the composite material to obtain a composite electret film;

[0043] (3) The composite electret film is stretched to make fibers, and then formed into a net to obtain the product.

[0044]The polytetrafluoroethylene film is prepared by the following method: mixing the polytetrafluoroethylene dispersion resin with a liquid additive, making the rod into a thin sheet by calendering, and then stretching in one direction by a machine to obtain a polytetrafluoroethylene film. Ethylene film, polytetrafluoroethylene film thickness of 90 μm.

[0045] The base film material is selected from polyethylene terephthalate, and the base film material is produced by extrusion blow molding. Step (1) Composite using the following method: cover the p...

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Abstract

The invention relates to a composite electret fiber filter material, which is prepared by the following method: (1) compounding a polytetrafluoroethylene film and a base film material to obtain a composite material; (2) injecting the composite material into an electrode to obtain Composite electret film; (3) The composite electret film is stretched into fibers and formed into a net to obtain the product. The composite electret filter material of the invention has high electret charge stability, excellent filtration efficiency, low pressure loss, long service life, wide application and wide adaptability.

Description

(1) Technical field [0001] The invention belongs to the field of ultra-purification engineering, and in particular relates to a composite electret fiber filter material. (2) Background technology [0002] With the development of science and technology, the requirements for the environment are becoming more and more stringent. To obtain a clean space, an air purifier is often used, and the filter membrane of the purifier is an important part in the purification process. The common filter membrane is The principle is to passively block the continuous movement of large dust whose line exceeds a certain size, so as to stop it. Its function is related to the pore size of the filter material (filter membrane). Moreover, the fabric or ordinary non-woven filter material usually used has dust infiltrated into the fabric to form a primary dust layer, thereby achieving deep and effective filtration. However, as the use time increases, its resistance increases until the fabric is bloc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/04B01D39/16D01F8/06D01F11/00B29C59/10B29C71/00
Inventor 陈钢进陈胜发
Owner TONGXIANG JIANMIN FILTER MATERIALS
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