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Filter material of gradient distribution and its preparation process

A filter material and gradient distribution technology, applied in the field of filter materials, can solve the problems of high cost, unfavorable filtration, and inability to give full play to hybrid fibers, and achieve the effects of excellent performance, improved service life and low cost

Inactive Publication Date: 2005-06-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are a small number of filter materials prepared from various fibers, but there is no targeted control over the distribution of different types of fibers in the material, so the advantages of hybrid fibers cannot be fully utilized
[0004] Existing composite filter materials are mainly formed by laminating different types of filter materials. It is necessary to perform secondary processing on different filter materials that have been formed. Not only the cost is high, but also there are obvious interfaces between layers, which is not easy Conducive to the smooth progress of filtration

Method used

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  • Filter material of gradient distribution and its preparation process
  • Filter material of gradient distribution and its preparation process
  • Filter material of gradient distribution and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: A kind of gradient distribution fiber filter material, containing coniferous wood pulp, polypropylene fiber, dispersant NP-6, cationic polyacrylamide, red dye, bright yellow dye, modified vinyl acetate emulsion, its mass parts number becomes: 90 parts of softwood pulp, 10 parts of polypropylene fiber, 0.01 part of dispersant NP-6, 5 parts of cationic polyacrylamide, 0.6 parts of red dye, 1 part of bright yellow dye, 20 parts of modified vinyl acetate emulsion.

[0044] 1. The coniferous wood pulp is beaten to a beating degree of 15°SR, and then diluted to a concentration of 0.1% by weight;

[0045] 2. Disperse the polypropylene fiber in the NP-6 solution containing 0.01 part, the fiber concentration is 0.5% by weight, the length of the polypropylene fiber is 3 mm, and the width is 10 μm;

[0046] 3. Mix coniferous wood pulp and polypropylene fiber pulp, and adjust the concentration to 0.02%;

[0047] 4. Add 5 parts of cationic polyacrylamide

[0048] 5. ...

Embodiment 2

[0054]Example 2: A gradient distribution fiber filter material, containing mercerized wood pulp, hemp pulp, glass fiber, dispersant NP-10, polyethylene oxide, PPE, anionic polyacrylamide, dark green dye, bright yellow dye, modified benzene Acrylic emulsion, its mass parts array is: 15 parts of mercerized wood pulp, 15 parts of hemp pulp, 70 parts of glass fiber, 0.8 part of dispersant NP-10, 0.1 part of polyethylene oxide, 1 part of PPE, 0.1 part of anionic polyacrylamide ; 1 part of dark green dye, 2 parts of light yellow dye, 30 parts of modified styrene-acrylic emulsion.

[0055] 1. Beat mercerized wood pulp and hemp pulp separately to a beating degree of 16°SR, and then dilute to a concentration of 0.5%;

[0056] 2. Disperse the glass fibers in a mixed aqueous solution containing 0.8 parts of NP-10 and 0.02 parts of polyethylene oxide, the fiber concentration is 0.1%, the length of the glass fibers is 15 mm, and the width is 5 μm;

[0057] 3. Mix mercerized wood pulp, hem...

Embodiment 3

[0065] Example 3: A gradient distribution fiber filter material, containing composite fiber, polyester, ceramic fiber, dispersant NP-9, dispersant NP-6, carboxymethyl cellulose, blue dye, modified vinyl acetate and phenolic compound Resin, its mass parts array is: 30 parts of composite fiber, 20 parts of polyester, 50 parts of ceramic fiber, 0.1 part of dispersant NP-9, 0.5 part of dispersant NP-6, 0.2 part of carboxymethyl cellulose, 0.5 part of blue dye 10 parts, modified vinyl acetate and phenolic composite resin.

[0066] 1. The composite fiber is dispersed in a solution containing 0.1 part of NP-9, the fiber concentration is 0.2% by weight, the composite fiber is 10 mm long and 20 μm wide;

[0067] 2. Polyester fibers are dispersed in a solution containing 0.5 parts of NP-6, the fiber concentration is 0.3% by weight, and the polyester fibers are 15 mm long and 15 μm wide;

[0068] 3. The ceramic fiber is dispersed in an aqueous solution of carboxymethyl cellulose contain...

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Abstract

A gradiently distributed filter material with gradually decreased pore diameter from top to bottom for high selectivity and low filter resistance is prepared through beating plant fibres to obtain pulp, dispersing the synthetic fibres and inorganic fibres in the aqueous solution of disperser, mixing, adding wet reinforcing agent, shaping by net, dewatering, reinforcing by resin, and drying again.

Description

technical field [0001] The invention relates to a filter material, in particular to a filter material with a gradient distribution used in the third filter of a motor vehicle engine. [0002] The invention also relates to a method for preparing the filter material. Background technique [0003] Existing fibrous filter materials for engines are mainly prepared from a single plant fiber. There are a small number of filter materials prepared from various fibers, but there is no targeted control over the distribution of different types of fibers in the material, so the advantages of hybrid fibers cannot be fully utilized. [0004] Existing composite filter materials are mainly formed by laminating different types of filter materials. It is necessary to perform secondary processing on different filter materials that have been formed. Not only the cost is high, but also there are obvious interfaces between layers, which is not easy It is conducive to the smooth progress of filtr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/02
Inventor 胡健梁云周雪松
Owner SOUTH CHINA UNIV OF TECH
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