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A kind of production method of electret composite filter material

A composite filter material and production method technology, applied in separation methods, chemical instruments and methods, filtration separation, etc., can solve problems such as weak electrostatic adsorption and poor filtration effect, achieve enhanced filtration efficiency, low filtration resistance, and enhanced electrostatic Adsorption effect

Active Publication Date: 2018-03-23
ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As we all know, the commonly used fiber filter materials, the dust collection mechanism mainly depends on direct interception, Brownian diffusion, inertial collision and gravity deposition and other mechanical barriers, the electrostatic adsorption between the filter material and particles is very weak, and the particle size is less than 1μm. poor effect

Method used

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  • A kind of production method of electret composite filter material

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Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment discloses a production method of an electret composite filter material. First, 73.5 parts of distilled water is added to 8 parts of PTFE dispersion (solid content 60wt%). After stirring for 2 minutes in an ultrasonic oscillator, 1 part of Titanate coupling agent, 0.3 parts of Si 3 N 4 Added to PTFE emulsion. Shake until mixed. The working parameters of the ultrasonic oscillator of the present invention are that the temperature is room temperature and the power is 3kW. The dispersion liquid was irradiated with γ-rays so that the irradiation dose was 1000 Gy. The dispersion is charged.

[0027] Secondly, the PTFE composite needle felt was obtained by blending PTFE fiber and PPS fiber at a mass ratio of 1:1 by hydroentanglement combined with needle punching, and the PTFE composite needle felt was impregnated with room temperature emulsion. The impregnation time is 7s, the rolling pressure rate is 90%, and the setting machine is heated from low temperat...

Embodiment 2

[0031] The present embodiment discloses a production method of an electret composite filter material. First, 85 parts of distilled water are added to 12 parts of PTFE dispersion (solid content 60wt%), and after stirring for 3 minutes in an ultrasonic oscillator, 2 parts of Titanate coupling agent, 1 part Si 3 N 4 Added to PTFE emulsion. Shake until mixed. The working parameters of the ultrasonic oscillator of the present invention are that the temperature is room temperature, the power is 3kW, and the dispersion liquid is irradiated with gamma rays so that the irradiation amount is 1500Gy. The dispersion is charged.

[0032] Secondly, the PTFE composite needle-punched felt obtained by blending PTFE fiber and PPS fiber by hydroentanglement combined with needle punching, and the PTFE composite needle-punched felt was impregnated with room temperature emulsion. The impregnation time is 10s, the rolling pressure rate is 93%, and the setting machine is heated from low temperatu...

Embodiment 3

[0035] This embodiment discloses a production method of an electret composite filter material. First, 90.7 parts of distilled water is added to 20 parts of PTFE dispersion (solid content 60wt%), and after stirring for 5 minutes in an ultrasonic oscillator, 5 parts of Titanate coupling agent, 1.5 parts of Si 3 N 4 Added to PTFE emulsion. Shake until mixed. The working parameters of the ultrasonic oscillator of the present invention are that the temperature is room temperature and the power is 3kW. The dispersion liquid was irradiated with γ-rays so that the irradiation dose was 2500 Gy. The dispersion is charged.

[0036]Secondly, the PTFE composite needle felt was obtained by blending PTFE fiber and PPS fiber at a mass ratio of 1:1 by hydroentanglement combined with needle punching, and the PTFE composite needle felt was impregnated with room temperature emulsion. The impregnation time is 15s, the rolling pressure rate is 92%, and it is heated from low temperature to high...

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Abstract

The invention discloses a production method of an electret composite filter material, comprising the following steps: (1) preparation of a PTFE treatment liquid; the treatment liquid includes Si3N4, a titanate coupling agent, a PTFE emulsion, and water; (2) Preparation of PTFE composite needle-punched felt; PTFE composite needle-punched felt obtained by blending PTFE fiber and PPS fiber; (3) irradiating electret; irradiating electret to the PTFE finishing solution in step (1) with gamma rays; 4) the production of PTFE electret composite filter material; PTFE composite needle felt is impregnated in the PTFE after-finish liquid with electret effect obtained in step (3), after heat setting, drying, negative corona discharge, obtain PTFE electret composite filter material. The invention has the advantages of high efficiency, low resistance and good charge retention.

Description

technical field [0001] The invention relates to the technical field of filter materials, in particular to a production method of an electret composite filter material. Background technique [0002] With the continuous development of social economy, environmental problems have become increasingly prominent. The emergence of "smog" weather has made the masses of the people and the country pay more and more attention to the problem of air pollution. PM2.5, submicron-level viruses and chemical substances spread and spread in the air, which greatly endangers people's health. Therefore, it is very important to effectively control fine particulate matter and toxic and harmful chemical and biological substances in the air. The application of ordinary filter material is an important means of purifying the air. However, the removal of fine particles is not thorough enough, and harmful microorganisms are easy to breed on the filter material, and there is a possibility of secondary p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/16B01D46/00
CPCB01D39/16B01D46/0001B01D46/0032
Inventor 杨东徐辉刘江峰
Owner ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH