High-efficiency spunlace filter material and preparing method thereof

A spunlace, high-efficiency technology, applied in separation methods, chemical instruments and methods, filtration and separation, etc., to achieve high firmness, prolong service life, and increase film firmness and durability.

Inactive Publication Date: 2016-06-29
ZHEJIANG HONGSHENG NEW MATERIAL TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve some of the problems existing in the existing environmental protection filter material technology, and to provide a spunlace high-efficiency filter material and its preparation method

Method used

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  • High-efficiency spunlace filter material and preparing method thereof
  • High-efficiency spunlace filter material and preparing method thereof
  • High-efficiency spunlace filter material and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] A method for preparing a spunlace high-efficiency filter material, comprising the steps of:

[0028] (1) Fabrication of the base cloth layer: select high-strength fiber yarns, process through pretreatment, and make the base cloth layer on the loom;

[0029] (2) Fabrication of the fiber web layer and combination with the base fabric: The production of the fiber net layer and the combination with the base fabric are completed by a new spunlace process;

[0030] (3) Introduce the above-mentioned processed product into a polytetrafluoroethylene emulsion dipping tank, and process through dipping, drying, and heat setting to make a spunlace high-efficiency filter material;

[0031] (4) Hot rolling lamination of polytetrafluoroethylene microporous membrane: introduce the impregnated spunlace high-efficiency filter material and polytetrafluoroethylene microporous membrane into the thermal lamination machine, and stretch the microporous membrane by stretching , and then combine...

Embodiment 1

[0040] 1. Ultra-fine glass fiber drawing molding, PTFE emulsion impregnation treatment, bulking process treatment, the treated glass fiber thread is woven into 320g / m 2 fiberglass puffed cloth.

[0041] Its longitudinal strength is ≥1700N; weft strength is greater than or equal to 1600N.

[0042] 2. Unpack the PTFE short fiber raw material, spread it evenly, spray the aqueous solution containing 1% antistatic agent, and after standing for 12 hours, go through the following procedures:

[0043] Pre-opening→Main opening→Cotton box mixing→Carding→Make 180g / m 2 ~200g / m 2 PTFE fiber mesh → pre-needle punching → spunlace → trimming, inspection and rolling into rolls, etc., to make 700g / m 2 Spunlace high-efficiency filter material.

[0044] Spunlace process parameters are as follows:

[0045] serial number

main project

Process parameters

1

Spout Diameter

0.10mm

2

Nozzle specification and quantity

Double row 25 holes

3

...

Embodiment 2

[0054] 1. After pretreatment, the high-strength PTFE filament is made of rapier loom and plain weaving process to make 150g / m 2 High-strength PTFE base cloth.

[0055] Its warp strength is ≥800N / 5×20cm; weft strength is ≥900N / 5×20cm.

[0056] 2. Unpack the PPS short fiber and PTFE short fiber raw materials, spread them evenly, spray an aqueous solution containing 1.5% antistatic agent, and after standing for 14 hours, go through the following procedures:

[0057] The mixing ratio of PPS staple fiber and PTFE staple fiber is 1:1→pre-opening→main opening→cotton box mixing→carding→made into 180g / m 2 ~200g / m 2 PTFE fiber mesh → pre-needling → spunlace → trimming inspection roll process, made 550g / m 2 composite spunlace felt.

[0058] Spunlace process parameters are as follows:

[0059]

[0060] .

[0061] 3. Introduce the composite spunlace felt into the PTFE emulsion dipping tank, and process it through dipping treatment, volatilization treatment, drying treatment, sinte...

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Abstract

The invention provides a spunlace high-efficiency filter material, which is mainly composed of six parts: base cloth layer, upper and lower fiber mesh layers, upper and lower impregnation treatment layers, polytetrafluoroethylene microporous membrane layer or polytetrafluoroethylene Vinyl foam coating. The base fabric layer is made of high-performance woven fabric; the upper and lower fiber mesh layers are short fibers that are pretreated, pre-opened, carded, and formed into a web, and then consolidated with the base fabric layer through spunlace processing. Made into spunlace felt; the spunlace felt is impregnated with polytetrafluoroethylene emulsion to form upper and lower impregnated layers; the polytetrafluoroethylene microporous film layer or polytetrafluoroethylene foam coating is made of polytetrafluoroethylene The tetrafluoroethylene microporous membrane is laminated with the spunlace felt or coated with PTFE resin on the surface of the spunlace felt, and finally made into a spunlace high-efficiency filter material. The spunlace high-efficiency filter material of the invention has a stable structure, high filtration precision, high temperature resistance and corrosion resistance, and can be used for dust filtration in various complex environments.

Description

technical field [0001] The invention relates to an environment-friendly filter material, in particular to a spunlace high-efficiency filter material with high filtering precision and good filtering performance. Background technique [0002] At present, due to the high temperature of the flue gas generated by some flue gas emission points or dust points in the iron and steel industry, non-ferrous metal industry, chemical industry, carbon black industry, cement industry, waste incineration industry, etc., containing acidic and alkaline substances, high-temperature flue gas The main components are soot, SO 2 , NO X , CO, fluoride, etc., have strong corrosiveness, and put forward higher requirements for the comprehensive index of filter materials. [0003] The comprehensive performance of the filter materials used in the current high-temperature filtration field is average, and the application range is limited. At present, glass fiber, polyphenylene sulfide, polyimide, aramid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/16B32B27/04B32B27/12B32B27/02B32B3/24
CPCB01D39/16B01D39/1607B32B3/266B32B5/26B32B2255/02B32B2255/26
Inventor 李刚
Owner ZHEJIANG HONGSHENG NEW MATERIAL TECH GRP CO LTD
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