CN211328495U - Aramid fiber impregnated finishing filtering needled felt - Google Patents
Aramid fiber impregnated finishing filtering needled felt Download PDFInfo
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- CN211328495U CN211328495U CN201921782059.5U CN201921782059U CN211328495U CN 211328495 U CN211328495 U CN 211328495U CN 201921782059 U CN201921782059 U CN 201921782059U CN 211328495 U CN211328495 U CN 211328495U
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Abstract
The utility model discloses an aramid fiber impregnated arrangement filters acupuncture felt relates to filtering material technical field. The utility model discloses in: the inner side of the high-strength base cloth layer is provided with an aramid fiber layer; a peripheral reinforcing layer is arranged on the peripheral side of the high-strength base cloth layer; the aramid fiber layer comprises aramid short fibers treated by a corresponding dipping process; the peripheral reinforcing layer comprises mixed fibers of glass fibers and stainless steel fibers for enhancing the overall toughness and antistatic property of the filter needled felt; the inner side surface of the high-strength base cloth layer is subjected to rough edge treatment to form base cloth rough edges; and a mixed connecting layer is formed between the base cloth burrs on the inner side of the high-strength base cloth layer and the aramid fiber layer in a needling reinforcing mode. The utility model discloses, set up and mix the union layer, set up peripheral back up coat, effectually guaranteed its good mechanical properties, also promoted the corrosion resistance of filter felt, prolonged aramid fiber and filtered acupuncture felt life, also had better smoke and dust filtering capability simultaneously.
Description
Technical Field
The utility model relates to a filtering material technical field especially relates to aramid fiber impregnated arrangement filters acupuncture felt.
Background
The aramid 1313 fiber, named metaphenylene isophthalamide, is prepared by solution spinning after condensation polymerization of metaphenylene diamine and metaphenylene dichloride, has the excellent characteristics of low rigidity, high elongation, high temperature resistance, acid and alkali resistance and the like, and is an ideal material for preparing high temperature resistant filter materials. Due to the fact that steric hindrance exists between a benzene ring and an amido bond in a meta-aramid fiber macromolecular structure, the amido bond can be hydrolyzed and broken in a high-temperature environment of strong alkali or strong acid, and the application of the aramid fiber 1313 in the field of flue gas dust removal of a power plant is limited to a certain extent.
The filtration working condition of industries such as waste incineration, coal-fired power plants, steel industry and the like is high temperature, large water content, high dew point, strong chemical corrosivity and high-viscosity dust smoke, and the problem of bag pasting due to high humidity and below dew point can occur in the filtration process to influence the filtration effect. How to make aramid fiber needled felt keep excellent wear resistance and chemical stability, satisfy the corresponding requirement of smoke and dust filtration, become the problem that needs to solve.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide aramid fiber flooding arrangement filters acupuncture felt to make aramid fiber acupuncture felt can keep excellent wearability and chemical stability, have better smoke and dust filtering performance.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the following material names are defined in the present invention:
(one) mixture film: the film is formed by fully crosslinking a waterproof agent, a crosslinking agent and a thickening agent;
(II) PTFE protective film: is a film formed by a PTFE emulsion impregnation process.
The utility model provides an aramid fiber impregnated filter needled felt, wherein an aramid fiber layer is arranged at the inner side of a high-strength base cloth layer; a peripheral reinforcing layer is arranged on the peripheral side of the high-strength base cloth layer; the aramid fiber layer comprises aramid short fibers treated by a corresponding dipping process; the peripheral reinforcing layer comprises mixed fibers of glass fibers and stainless steel fibers for enhancing the overall toughness and antistatic property of the filter needled felt; the inner side surface of the high-strength base cloth layer is subjected to rough edge treatment to form base cloth rough edges; and a mixed connecting layer is formed between the base cloth burrs on the inner side of the high-strength base cloth layer and the aramid fiber layer in a needling reinforcing mode.
As a preferred technical scheme of the utility model, the aramid fiber layer surface is fully crosslinked with the thickening agent through the waterproof agent, the crosslinking agent and the thickening agent, and a mixture film is formed on the aramid fiber layer surface; forming a PTFE protective film on the surface of the aramid short fiber through a PTFE emulsion impregnation process; the crosslinking agent can be preferably a silane coupling agent, and the thickening agent can be preferably PEG or PVA thickening agent.
As an optimized technical scheme of the utility model, the distribution density ratio of the intraformational glass fiber of peripheral reinforcement and stainless steel fiber is 1: 2.
as a preferred technical scheme of the utility model, the base cloth burrs on the inner side surface of the high-strength base cloth layer form a burr structure with an inclination angle in a directional burr mode; the included angle between the base cloth burrs and the inner surface of the high-strength base cloth layer is 30-150 degrees.
As an optimal technical scheme of the utility model, the thickness that high strength base cloth layer and aramid fiber layer constitute is 2.61 ~ 3.19 mm.
As an optimal technical scheme of the utility model, mix the acupuncture of joining the layer and connect 1/3 ~ 1/2 that thickness is aramid fiber layer thickness.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model effectively ensures the excellent mechanical property, improves the corrosion resistance of the filter felt and prolongs the service life of the aramid fiber filter needled felt by arranging the mixed connecting layer and the peripheral reinforcing layer in the aramid fiber filter needled felt;
2. the aramid fiber filtering needled felt sample greatly improves the filtering efficiency of PM2.5, the filtering resistance is not obviously increased, smaller-size particles in industrial waste gas can be filtered more favorably after finishing, and the filtering performance is improved;
3. the utility model discloses a waterproof agent and cross-linking agent fully crosslink, form solid film on filter material fiber surface, through the cladding of PTFE emulsion at aramid fiber surface, protected fibre inner structure, not only reduced the surface tension of filter material, make it have better waterproof grease proofing performance, also reduced the filter material surface and the bonding of dust in the flue gas, reduced the running resistance, effectively resisted the condition of high moisture content, high-grade anti dewfall.
Drawings
Fig. 1 is a schematic structural diagram of the aramid fiber impregnated filter needled felt of the present invention;
wherein: 1-a high-strength base cloth layer; 2-aramid fiber layer; 3-mixed connecting layer; 4-base cloth rough selvedge; 5-peripheral reinforcing layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The utility model is an aramid fiber dipping, finishing and filtering needled felt, wherein an aramid fiber layer 2 is arranged at the inner side of a high-strength base cloth layer 1; a peripheral reinforcing layer 5 is arranged on the peripheral side of the high-strength base cloth layer 1; the aramid fiber layer 2 comprises aramid short fibers treated by a corresponding dipping process; the peripheral reinforcing layer 5 comprises mixed fibers of glass fibers and stainless steel fibers for enhancing the integral toughness and antistatic property of the filter needled felt; the inner side surface of the high-strength base cloth layer 1 is processed by rough edges to form base cloth rough edges 4; and a mixed connecting layer 3 is formed between the base cloth burrs 4 on the inner side of the high-strength base cloth layer 1 and the aramid fiber layer 2 in a needling reinforcing mode.
Further, the surface layer of the aramid fiber layer 2 is fully crosslinked by a waterproof agent, a crosslinking agent and a thickening agent, and a mixing agent film is formed on the surface of the aramid fiber layer 2; forming a PTFE protective film on the surface of the aramid short fiber through a PTFE emulsion impregnation process; the crosslinking agent can be preferably a silane coupling agent, and the thickening agent can be preferably PEG or PVA thickening agent.
Further, the distribution density ratio of the glass fibers to the stainless steel fibers in the peripheral reinforcing layer 5 is 1: 2.
Further, the base cloth burrs 4 on the inner side surface of the high-strength base cloth layer 1 form a burr structure with an inclined angle in an oriented burr mode; the included angle between the base fabric burr 4 and the inner surface of the high-strength base fabric layer 1 is 30-150 degrees.
Furthermore, the thickness of the high-strength base cloth layer 1 and the aramid fiber layer 2 is 2.61-3.19 mm.
Furthermore, the needling connection thickness of the mixed connection layer 3 is 1/3-1/2 of the thickness of the aramid fiber layer 2
The utility model discloses an among the aramid fiber impregnated arrangement filtration needled felt, preparation aramid fiber needled filtration felt process flow is: fiber raw material → opening and carding → cross lapping → needling and reinforcing → needle felt → preparation of finishing agent → impregnation and finishing → performance test; the aramid fiber 1313 needled felt is prepared and coated with PTFE, so that the filtration resistance is reduced while the filtration efficiency is ensured.
The utility model discloses a special flooding formula technique of aramid fiber: after the impregnation liquid is stirred by foaming equipment, uniform, stable and fine foam is formed along with the injection of air.
The utility model discloses a corresponding performance parameter of aramid fiber flooding arrangement filtration acupuncture felt as follows:
the above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. Aramid fiber impregnated finishing filter needled felt, including the high-strength base cloth layer, its characterized in that:
the inner side of the high-strength base cloth layer (1) is provided with a layer of aramid fiber layer (2);
a peripheral reinforcing layer (5) is arranged on the peripheral side of the high-strength base cloth layer (1);
the aramid fiber layer (2) comprises aramid short fibers treated by a corresponding dipping process;
the peripheral reinforcing layer (5) comprises mixed fibers of glass fibers and stainless steel fibers for enhancing the overall toughness and antistatic property of the filter needled felt;
the inner side surface of the high-strength base cloth layer (1) is subjected to rough edge treatment to form base cloth rough edges (4);
and a mixed connecting layer (3) is formed between the base cloth burrs (4) on the inner side of the high-strength base cloth layer (1) and the aramid fiber layer (2) in a needling reinforcing mode.
2. The aramid impregnated filter needled felt according to claim 1, characterized in that:
a layer of mixing agent film is attached to the surface layer of the aramid fiber layer (2);
and a layer of PTFE protective film is attached to the surface of the aramid short fiber.
3. The aramid impregnated filter needled felt according to claim 1, characterized in that:
the distribution density ratio of the glass fibers to the stainless steel fibers in the peripheral reinforcing layer (5) is 1: 2.
4. the aramid impregnated filter needled felt according to claim 1, characterized in that:
the base cloth burrs (4) on the inner side surface of the high-strength base cloth layer (1) form a burr structure with an inclined angle in an oriented burr mode;
the included angle between the base cloth burrs (4) and the inner surface of the high-strength base cloth layer (1) is 30-150 degrees.
5. The aramid impregnated filter needled felt according to claim 1, characterized in that:
the thickness of the high-strength base cloth layer (1) and the aramid fiber layer (2) is 2.61-3.19 mm.
6. The aramid impregnated filter needled felt according to claim 1, characterized in that:
the needling connection thickness of the mixed connection layer (3) is 1/3-1/2 of the thickness of the aramid fiber layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921782059.5U CN211328495U (en) | 2019-10-23 | 2019-10-23 | Aramid fiber impregnated finishing filtering needled felt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921782059.5U CN211328495U (en) | 2019-10-23 | 2019-10-23 | Aramid fiber impregnated finishing filtering needled felt |
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| CN211328495U true CN211328495U (en) | 2020-08-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116351162A (en) * | 2023-03-07 | 2023-06-30 | 华基环保(武汉)有限公司 | Production method of high-strength corrosion-resistant industrial filter material |
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2019
- 2019-10-23 CN CN201921782059.5U patent/CN211328495U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116351162A (en) * | 2023-03-07 | 2023-06-30 | 华基环保(武汉)有限公司 | Production method of high-strength corrosion-resistant industrial filter material |
| CN116351162B (en) * | 2023-03-07 | 2023-10-10 | 华基环保(武汉)有限公司 | Production method of high-strength corrosion-resistant industrial filter material |
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Denomination of utility model: Aramid impregnated filter needle punched felt Effective date of registration: 20220117 Granted publication date: 20200825 Pledgee: China Everbright Bank, Limited by Share Ltd, Taizhou branch Pledgor: ZHEJIANG HEADING ENVIRONMENT TECHNOLOGY CO.,LTD. Registration number: Y2022330000073 |