Spunlace precise surface filter material and preparation method thereof

A spunlace, precision technology, applied in separation methods, chemical instruments and methods, filtration and separation, etc., to achieve the effects of improving corrosion resistance, reducing pressure drop, and high strength

Inactive Publication Date: 2016-06-22
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 problems existing in the field of existing environmental protection filter materials, and to provide a spunlace precision surface layer filter material and its preparation method

Method used

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  • Spunlace precise surface filter material and preparation method thereof
  • Spunlace precise surface filter material and preparation method thereof
  • Spunlace precise surface filter material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The preparation method of the spunlace precision surface layer filter material comprises the following steps:

[0030] (1) Fabrication of the base cloth layer: select high-strength fiber yarns, process through pretreatment, and make the base cloth layer on the loom;

[0031] (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;

[0032] (3) The spunlace felt is introduced into the needle punching machine as the base material. After pretreatment, pre-opening, carding, and web formation, the fine denier short fibers are consolidated on the surface of the spunlace felt by needle punching to make a precision surface. layer of spunlace felt;

[0033] (4) The precision surface spunlace felt is introduced into a polytetrafluoroethylene emulsion dipping tank, and after dipping, drying, and heat setting processing, the spunlace precision...

Embodiment 1

[0041] 1. Ultra-fine glass fiber drawing, PTFE mixed emulsion impregnation treatment, bulking process treatment, the treated glass fiber thread is woven into 320g / m 2 fiberglass puffed cloth.

[0042] Its longitudinal strength is ≥2400N; weft strength is greater than or equal to 2300N.

[0043] 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:

[0044] Pre-opening→Main opening→Cotton box mixing→Carding→Make 180g / m 2 ~200g / m 2 PTFE fiber mesh → pre-acupuncture → spunlace → shaving, inspection and rolling, etc., to make 700g / m 2 Spunlace felt.

[0045] Spunlace process parameters are as follows:

[0046] serial number

main project

Process parameters

1

Spout Diameter

0.10mm

2

Nozzle specification and quantity

Double row 25 holes

3

water needle pressure

1.0×10 7 Pa ...

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-acupuncture → spunlace → trimming inspection roll process, made 530g / m 2 spunlace felt.

[0058] Spunlace process parameters are as follows:

[0059] serial number

main project

Process parameters

1

Spout Diameter

0.11mm

2

Nozzle specification and quantity

Double row 31 holes

3

water needle pr...

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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Abstract

The invention provides a spunlace precise surface filter material which comprises the following six parts from a dust-coming side to an air-purifying side: a precise surface layer, an upper fiber web layer, a base cloth layer and a lower fiber web layer as well as immersion treatment layers arranged on the two sides of the filter material, wherein the upper and lower fiber web layers are formed by pre-processing, pre-loosening, carding and netting short fibers and then are fixedly adhered to the base cloth layer through spunlace processing, so as to form a spunlace felt; the precise surface layer is formed by pre-processing, pre-loosening, carding and netting fine denier fibers and then is fixedly adhered to the surface of the spunlace felt, so as to form a spunlace precise surface felt; the spunlace precise surface felt is subjected to immersion treatment in polytetrafluoroethylene emulsion, thereby forming the upper and lower immersion layers; the spunlace precise surface filter material is lastly formed. The spunlace precise surface filter material provided by the invention is stable in structure, has the characteristics of high filtering precision, high temperature resistance, excellent corrosion resistance, and the like, and can be used for filtering smoke under various complex environments.

Description

technical field [0001] The invention relates to an environment-friendly filtering material, in particular to a spunlace precision surface filter material with high filtering precision and good filtering performance and a preparation method thereof. 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, po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B32B27/02B32B27/04B32B27/12
CPCB01D39/14B01D2239/10B32B5/26B32B2260/021B32B2260/046
Inventor 李刚
Owner ZHEJIANG HONGSHENG NEW MATERIAL TECH GRP CO LTD
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