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Para-aramid nano fiber/polyphenylene sulfide non-woven fabric composite filter material and preparation method for same

A nanofiber, para-aramid fiber technology is applied in the field of composite filter material and its preparation, which can solve the problems of high cost, complicated preparation process, and no improvement in the filtration efficiency of tiny particles, and achieves long service life, simple preparation process, and preparation method. Simple and energy-saving effect

Active Publication Date: 2016-02-03
辽宁洁花环保科技装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite filter material of this invention is a single component. Although it is a composite of fiber net and short fiber, which improves the filtration efficiency of the composite filter material, it does not improve the filtration efficiency of tiny particles, and the preparation process is complicated and the cost is high.
[0005] It can be seen that in the existing technology, there is no PPS non-woven fabric with high filter material strength, good high temperature thermal stability, high air permeability, smooth surface, easy to clean dust, and high filtration accuracy for PM2.5 fine particles. Therefore, in the face of the increasingly serious problem of atmospheric haze caused by industrial development, it is urgent to develop a composite filter material with good performance, simple and energy-saving preparation methods, and ultra-high filtration efficiency for PM2.5 tiny particles

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Effect test

preparation example Construction

[0034] The preparation method refers to compounding para-aramid nanofibers and polyphenylene sulfide non-woven fabrics to obtain a composite filter material. The preparation method follows the steps below:

[0035] ① Suspension and dispersion of para-aramid nanofibers

[0036] Adding N-methylpyrrolidone to the aramid resin jelly body formed by the para-aramid polymerization reaction to swell the jelly body, and then stirring at a high speed to break the swollen aramid resin jelly body into granular colloidal particles. Adding a dispersant to the swollen aramid resin jelly body and stirring at a high speed for dispersion to obtain a uniform and stable para-aramid nanofiber suspension dispersion.

[0037] Wherein, the resin content of the aramid resin jelly is 15%~28%; the mass ratio of the aramid resin jelly to N-methylpyrrolidone is 1:0.2~3; the swelling aramid resin jelly and The mass ratio of the dispersant is 1:1~6; the diameter of the para-aramid nanofiber contained in th...

Embodiment 1

[0049] ① Suspension and dispersion of para-aramid nanofibers

[0050] Adding N-methylpyrrolidone to the aramid resin jelly body formed by the para-aramid polymerization reaction to swell the jelly body, and then stirring at a high speed to break the swollen aramid resin jelly body into granular colloidal particles. Adding water to the swollen aramid resin jelly body, stirring and dispersing at a high speed, obtains a uniform and stable para-aramid fiber nanofiber suspension dispersion.

[0051] Wherein, the resin content of the aramid resin jelly is 15%; the mass ratio of the aramid resin jelly to N-methylpyrrolidone is 1:0.2; the mass ratio of the aramid resin jelly to the dispersant The ratio is 1:1; the diameter of the para-aramid nanofiber contained in the suspension dispersion is 40nm, the fiber length is 10um, and the fiber mass percentage is 6%.

[0052] ② Composite treatment of para-aramid nanofibers and polyphenylene sulfide non-woven fabrics

[0053] Spray the para...

Embodiment 2

[0061] ① Suspension and dispersion of para-aramid nanofibers

[0062] Adding N-methylpyrrolidone to the aramid resin jelly body formed by the para-aramid polymerization reaction to swell the jelly body, and then stirring at a high speed to break the swollen aramid resin jelly body into granular colloidal particles. Adding water to the swollen aramid resin jelly body, stirring and dispersing at a high speed, obtains a uniform and stable para-aramid fiber nanofiber suspension dispersion.

[0063] Wherein, the resin content of the aramid resin jelly is 18%; the mass ratio of the aramid resin jelly to N-methylpyrrolidone is 1:1; the mass ratio of the aramid resin jelly to the dispersant The ratio is 1:2; the diameter of the para-aramid nanofiber contained in the suspension dispersion is 50nm, the fiber length is 20um, and the fiber mass percentage is 6%;

[0064] ② Composite treatment of para-aramid nanofibers and polyphenylene sulfide non-woven fabrics

[0065] Immerse the poly...

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Abstract

The invention relates to composite filter material and a preparation method for the same and in particularly relates to para-aramid nano fiber / polyphenylene sulfide non-woven fabric composite filter material and a preparation method for the same. For deficiencies of the prior art and products and a problem of low filtration efficiency for micro particles by common polyphenylene sulfide non-woven fabric composite filter material, the para-aramid nano fiber, polyphenylene sulfide acupuncture, spunlaced or spun-bonded non-woven fabric are composite via a spraying-coating or impregnation method to acquire graded composite filter material. Compared with the present polyphenylene sulfide acupuncture, spunlaced or spun-bonded non-woven fabric filter material, the composite filter material surface layer or the interior contains firmly-combined para-aramind nano fibers, so the filter material can remain great ventilating rate and high-temperature resistance performance; micro particle filtration rate can be obviously improved; and the filter material can be simply prepared and conserves energy.

Description

technical field [0001] The invention relates to a composite filter material and a preparation method thereof, in particular to a para-aramid nanofiber / polyphenylene sulfide non-woven composite filter material and a preparation method thereof. Background technique [0002] Polyphenylene Sulfide (PPS) fiber is a new type of high-performance synthetic fiber, which has excellent thermal stability, chemical corrosion resistance, flame retardancy and other physical and chemical properties, and can withstand high temperatures and extremely harsh working environments. Under long-term use, it is mainly used for hot filter materials. In recent years, with the rapid development of industry, industrial pollution has become increasingly serious, which has endangered the natural environment and people's health. At present, the smog weather in most cities continues to be active, the concentration of suspended particulate matter in the atmosphere remains high, and the air quality is mostly...

Claims

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Application Information

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IPC IPC(8): D04H1/42D04H1/4282D04H1/70B01D39/16B01D46/00
Inventor 王罗新杨诗文庹星星殷先泽吴静陈少华王桦庹新林
Owner 辽宁洁花环保科技装备有限公司
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