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A kind of multi-layer composite filter material and preparation method thereof

A filter material and multi-layer composite technology, applied in the direction of filtration separation, separation methods, chemical instruments and methods, etc., can solve the problems of filter cloth holes, short service life, poor folding resistance, etc., to improve the use efficiency and service life Long, high structural strength effect

Active Publication Date: 2017-12-12
江苏美滤新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are some problems in the actual use of various filter materials: for example, glass fiber has a short service life at a temperature of 200°C to 260°C, and holes will appear in the filter cloth in a short period of time; PTFE fibers are expensive The cost is high, which is difficult for general enterprises to accept; the ceramic fiber itself is brittle, has poor folding resistance, and the fiber is easily broken; the various properties of the basalt fiber are quite poor; therefore, filter materials with better performance are required
However, the composition of each layer of the filter material produced by this patent is unknown, the filter performance cannot be guaranteed, and the filter effect on small particle pollutants is poor.

Method used

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  • A kind of multi-layer composite filter material and preparation method thereof
  • A kind of multi-layer composite filter material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A multi-layer composite filter material is sequentially composed of a base layer, an ion exchange membrane layer, a composite modified layer, an adsorption layer, and a carbon fiber layer;

[0043] Among them, the base layer is made of polyvinyl chloride fiber, and the weight is 90g / m 2 , the filtration accuracy is 3μm, and the air permeability is 100L / m2 / S;

[0044] Among them, the ion exchange membrane layer is made of polystyrene fibers and polyacrylate fibers with a diameter of 30nm, and the weight is 60g / m 2 , the filtration accuracy is 8μm, and the air permeability is 200L / m 2 / S; wherein the mass ratio of polystyrene fiber and polyacrylate fiber is 1:1;

[0045] The composite modified layer is made of 60% random polypropylene fibers, 25% high-density polyethylene fibers, 10% polyvinyl alcohol fibers, and 5% additives, and the weight is 40g / m 2 , the filtration accuracy is 15μm, and the air permeability is 1000L / m 2 / S; The additive is composed of 40% by mass...

Embodiment 2

[0049] A multi-layer composite filter material is sequentially composed of a base layer, an ion exchange membrane layer, a composite modified layer, an adsorption layer, and a carbon fiber layer;

[0050] The base layer is made of polytetrafluoroethylene fiber, the weight is 110g / m 2 , the filtration accuracy is 0.5μm, and the air permeability is 50L / m 2 / S;

[0051] Among them, the ion exchange membrane layer is made of polyvinylpyrrolidone fibers with a diameter of 100nm, and the weight is 90g / m 2 , the filtration accuracy is 3μm, and the air permeability is 80L / m 2 / S;

[0052] The composite modified layer is made of 75% random polypropylene fibers, 19% high-density polyethylene fibers, 5% polyvinyl alcohol fibers, and 1% additives in mass percentages, and the weight is 60g / m 2 , the filtration accuracy is 8μm, and the air permeability is 300L / m 2 / S; the auxiliary agent consists of 30% lecithin, 30% sorbitan ester, 10% dioctyl phthalate, 10% aluminum hydroxide, 15% zi...

Embodiment 3

[0056] A multi-layer composite filter material is sequentially composed of a base layer, an ion exchange membrane layer, a composite modified layer, an adsorption layer, and a carbon fiber layer;

[0057] Among them, the base layer is made of polyoxyethylene fiber and polybutylene terephthalate fiber, and the basis weight is 100g / m 2 , the filtration accuracy is 1.7μm, and the air permeability is 75L / m 2 / S; wherein the mass ratio of polyoxyethylene fiber and polybutylene terephthalate fiber is 1:1;

[0058] Among them, the ion exchange membrane layer is made of bisphenol A polycarbonate fiber with a diameter of 65nm, and the weight is 75g / m 2 , the filtration accuracy is 5.5μm, and the air permeability is 140L / m 2 / S;

[0059] The composite modified layer is made of 67% random polypropylene fiber, 23% high-density polyethylene fiber, 7% polyvinyl alcohol fiber, and 3% auxiliary agent in mass percentage, and the weight is 50g / m 2 , the filtration accuracy is 12μm, and the ...

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Abstract

The invention discloses a multilayer composite filter material and a production method thereof. The multilayer composite filter material sequentially comprises a base layer, an ion exchange film layer, a composite modified layer, an absorption layer and a carbon fiber layer. The production method includes: using an ultrasonic device to clean the base layer, and performing vacuum drying to obtain the clean base layer; using a precipitation method to produce the ion exchange film layer on the clean base layer, and solidifying for 24-36 hours to obtain a primary filter material; using a melt-blow spinning method to produce the composite modified layer on the side, with the ion exchange film layer, of the primary filter material so as to obtain a secondary filter material; adhering the absorption layer to the side, with the composite modified layer, of the secondary filter material through adhesive to obtain a tertiary filter material; using a sputter coating method to produce the carbon fiber layer on the side, with the absorption layer, of the tertiary filter material to obtain the multilayer composite filter material. The multilayer composite filter material produced by the method has the advantages that pollutants in wide distribution can be filtered effectively, and the multilayer composite filter material is low in resistance, long in service life and high in strength.

Description

technical field [0001] The invention relates to the field of filter materials for liquid or gas fluid, in particular to a multilayer composite filter material and a preparation method thereof. Background technique [0002] Due to the increasingly prominent environmental problems such as air pollution and water pollution, more and more attention has been paid to the purification and separation of substances by means of filtration. The requirements for filter materials are getting higher and higher. As the key components of filter materials, the development of And applications are getting more and more attention. There are some problems in the actual use of various filter materials: for example, glass fiber has a short service life at a temperature of 200°C to 260°C, and holes will appear in the filter cloth in a short period of time; PTFE fibers are expensive The cost is high, which is difficult for general enterprises to accept; the ceramic fiber itself is brittle, has poor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/14B01D39/16B32B27/02B32B27/12B32B9/00B32B9/04
CPCB01D39/14B01D39/1623B32B5/26B32B27/18B32B2262/02B32B2262/106
Inventor 潘海云
Owner 江苏美滤新材料有限公司