Filtering material and preparation method thereof

A filter material and substrate technology, which is applied in the field of filtration, can solve the problems of unsatisfactory filters, low filtration precision, poor water resistance and oil resistance of filter paper, etc., and achieve good water resistance, safety and environmental protection in the production process, and good oil resistance. Effect

Active Publication Date: 2017-01-25
LIANGRUI FLUID TECH SHANGHAI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The first object of the present invention is to provide a kind of filter material, in the described filter material, by taking solidified paper as base substrate, and depositing PBT fiber film on base substrate, thereby can make the filter material made have Good water resistance and oil resistance, and can be used under high temperature conditions, thus solving the technical problems of the existing filter paper with poor water resistance and oil resistance, and low filtration accuracy, which cannot meet the filter requirements

Method used

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  • Filtering material and preparation method thereof
  • Filtering material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] (1) According to weight percentage, 30% of softwood pulp, 35% of mercerized wood pulp, 20% of bleached hardwood pulp, and 15% of glass fiber are weighed for each raw material, and pulped and polished to obtain pulp slurry;

[0046] (2) forming the pulp slurry to obtain base paper and drying;

[0047] (3) taking phenolic resin and formaldehyde as a curing agent, the mass grams of the curing agent being 0.5 to 2.5% of the pulp;

[0048] (4) Coating the curing agent on the surface of the dried base paper, and heating to 180°C, and allowing the curing agent to be pre-cured step by step;

[0049] Among them, the coating amount of curing agent is 20g / m 2 ;

[0050] (4) Dry the pre-cured base paper at 120-140°C for 10-40s to obtain the base substrate;

[0051] (5) Depositing the PBI fiber material on the base substrate by melt blowing to obtain the filter material.

[0052] The thickness of the basic substrate of the filter material that embodiment 1 makes is 0.2mm, and th...

Embodiment 2

[0054] (1) According to weight percentage, 20% of softwood pulp, 45% of mercerized wood pulp, 20% of bleached hardwood pulp, and 15% of glass fiber are weighed for each raw material, and pulped and polished to obtain pulp slurry;

[0055] (2) forming the pulp slurry to obtain base paper and drying;

[0056] (3) taking phenolic resin and formaldehyde as a curing agent, the mass grams of the curing agent being 0.5 to 2.5% of the pulp;

[0057] (4) Coating the curing agent on the surface of the dried base paper, and heating to 180°C, and allowing the curing agent to be pre-cured step by step;

[0058] Among them, the coating amount of curing agent is 40g / m 2 ;

[0059] (4) Dry the pre-cured base paper at 120-140°C for 10-40s to obtain the base substrate;

[0060] (5) Depositing the PBI fiber material on the base substrate by melt blowing to obtain the filter material.

[0061] The thickness of the basic substrate of the filter material that embodiment 2 makes is 0.3mm, and th...

Embodiment 3

[0063] (1) According to weight percentage, 30% of softwood pulp, 45% of mercerized wood pulp, 15% of bleached hardwood pulp, and 10% of glass fiber are weighed for each raw material, and pulped and polished to obtain pulp slurry;

[0064] (2) forming the pulp slurry to obtain base paper and drying;

[0065] (3) taking phenolic resin and formaldehyde as a curing agent, the mass grams of the curing agent being 0.5 to 2.5% of the pulp;

[0066] (4) Coating the curing agent on the surface of the dried base paper, and heating to 180°C, and allowing the curing agent to be pre-cured step by step;

[0067] Among them, the coating amount of curing agent is 60g / m 2 ;

[0068] (4) Dry the pre-cured base paper at 120-140°C for 10-40s to obtain the base substrate;

[0069] (5) Depositing the PBI fiber material on the base substrate by melt blowing to obtain the filter material.

[0070] The thickness of the basic substrate of the filter material that embodiment 3 makes is 0.5mm, and th...

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Abstract

The invention provides a filtering material and a preparation method of the filtering material. Through taking a solidifying paper as a base substrate and depositing a PBT (olybutylece terephthalate) fiber film on the base substrate, the prepared filtering material has good waterproof and oilproof performances, and can be used under the high temperature condition, thus the technical problems that waterproof, oilproof, and precision performances of the existed filtering paper are bad, and the filtering paper cannot meet a high-performance filter are solved. The preparation method takes wood pulp enriched in wood pulp cellulose, glass fiber and other fiber materials and the glass fiber as the raw material, and prepares the base substrate through drying and solidifying, sprays the PBT material on the base substrate and thus the filtering material is obtained; the preparation method is fast and convenient; the prepared filtering material is waterproof, oilproof, and has accurate performance, and others.

Description

technical field [0001] The invention relates to the field of filtration, in particular to a filter material and a preparation method thereof. Background technique [0002] Filter paper is a key component in the filter and determines the performance of the filter. Filter paper usually consists of a paper filter layer made from ordinary wood pulp. Due to the finer fibers and higher density of ordinary wood pulp, the filter paper produced generally has disadvantages such as high density, low filtration efficiency, and short service life, and its filtration efficiency is generally lower than 90%. There are also common problems such as poor curing and insufficient water resistance. When the air humidity changes, the paper is prone to deformation. [0003] As the filter paper used in the filter, it needs to adapt to the environment of air and high-temperature oil at the same time, which requires higher performance indicators such as water resistance and oil resistance of the fil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/08D21H15/12D21H13/40B01D39/14
CPCB01D39/14D21H13/40D21H15/12D21H27/08
Inventor 易元利王永勤
Owner LIANGRUI FLUID TECH SHANGHAI
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