Pure metal fiber fabric filter composite material and preparation method thereof

A fiber fabric and composite material technology, which is applied in the field of environmental treatment materials preparation, can solve the problems affecting the service life of sintered felt and weak mechanical properties, and achieve the effects of small friction, long replacement cycle and improved filtration efficiency

Inactive Publication Date: 2019-08-30
HUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to realize gradient filtration, the existing metal fiber felt filter material adopts the method of laying fibers with different diameters evenly layer by layer; in addition, in order to improve the filtration accuracy, generally adopts finer metal fibers, and the metal fiber felt prepared in this way has mechanical problems. Defects with relatively weak performance affect the service life of sintered felt

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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  • Pure metal fiber fabric filter composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0026] see figure 1 , the present invention provides a high-temperature-resistant pure metal fiber fabric filter composite material, which sequentially includes a dust-facing layer 1 treated with an anti-corrosion coating, a first adhesion layer 2 composed of pure metal fiber knitted fabric, and a base cloth layer 3 from outside to inside , the second adhesion layer 4 and the bottom layer 5 made of pure metal fiber knitted fabric.

[0027] The base fabric layer 3 is a woven fabric, which is formed by interweaving pure stainless steel fiber yarns through plain weave or twill weave. The diameter of the stainless steel fibers is 40-60 μm, preferably 50 μm. The linear density of the stainless steel fiber yarns is 400-600tex, preferably 500tex; stainless steel fiber yarn is formed by plying 3 single-strand metal yarns;

[0028] The dust-facing layer 1 is a fiber felt, which is formed by fine stainless steel fibers through drawing, opening, carding, laying, calendering, and sinteri...

Embodiment 2

[0037] see figure 1 , the present invention provides a high-temperature-resistant pure metal fiber fabric filter composite material, which sequentially includes a dust-facing layer 1 treated with an anti-corrosion coating, a first adhesion layer 2 composed of pure metal fiber knitted fabric, and a base cloth layer 3 from outside to inside , the second adhesion layer 4 and the bottom layer 5 made of pure metal fiber knitted fabric.

[0038] The base fabric layer 3 is a woven fabric, the woven fabric is made of iron-chromium-aluminum fiber yarn through plain weave or twill weave, the diameter of the stainless steel fiber is 10-30 μm, preferably 24 μm, and the diameter of the iron-chromium-aluminum fiber yarn is 10-30 μm. The linear density is 200-400tex, preferably 300tex; the stainless steel fiber yarn is formed by plying three single-strand metal yarns;

[0039] The dust-facing layer 1 is a fiber felt, which is formed by fine stainless steel fibers through drawing, opening, c...

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 discloses a pure metal fiber filter material used in the field of high-temperature dust removal. The filter material is formed by compounding of five layers including a woven fabric layer, knitted fabric layers and non-woven felt layers, and the filter material comprises a pure metal fiber felt dust facing layer, a first adhesion layer, a base cloth layer, a second adhesion layer anda bottom layer from the top to the bottom; and the surface of the dust facing layer is coated with corrosion-resistant coatings, and the layers of the composite filter material are connected by needling or sintering. The pure metal fiber composite filter material prepared by the invention has good high-temperature resistance and can be used for a long time at a high temperature of 500 DEG C or higher, the multi-layer composite structure has a stepwise-changed pore size, and the filtering effect is good; and the product dust facing layer is treated by the multi-layered acid-proof anti-corrosion coatings, so that the durability of the filter material is further improved.

Description

technical field [0001] The invention relates to the technical field of preparation of environmental treatment materials, in particular to a high-temperature-resistant pure metal fiber fabric filter composite material and a preparation method thereof. Background technique [0002] Pure metal fibers are a class of metal materials with broad development prospects. They not only have the inherent metal properties of metal materials, but also have significant changes in their internal structure, physical and chemical properties, and surface properties during the fiber forming process. Pure metal fiber fabric is a textile material with certain air permeability and mechanical strength formed by pure metal fiber through weaving, knitting or laying into felt. Its temperature resistance can reach up to 1000 ° C. The application in the field of environmental protection filtration has strong advantages. In the traditional high-temperature dust removal industry or field, ceramic materia...

Claims

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B32B7/12B32B15/02B32B15/14B32B15/18B32B33/00
CPCB01D39/14B32B5/024B32B5/26B32B15/02B32B15/14B32B15/18B32B7/12B32B33/00B32B2262/103B32B2250/20
Inventor 朱方龙
Owner HUIZHOU UNIV
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