High strength abrasion resistant industrial filtration nonwoven

Abstract

The utility model discloses a kind of high-strength abrasion-resistant industrial filtering nonwoven fabrics, including needle punching composite PTFE base cloth layer and first aramid fiber web;The other side of the PTFE base cloth layer is needle punching composite with second aramid fiber web;The area density of the industrial filtering nonwoven fabric is 500-600 grams per square meter, and the thickness is 2.0-2.5mm.The utility model relates to a kind of high-strength abrasion-resistant industrial filtering nonwoven fabrics, using PTFE base cloth layer, the strength of the industrial filtering nonwoven fabric can be improved.And the aramid fiber and PTFE filament used all have the effect of resisting abrasion, so that the industrial filtering nonwoven fabric has the effect of resisting abrasion.And needle punching nonwoven fabric can improve dust capacity.

Description

Technical Field

[0001] This utility model relates to a high-strength, wear-resistant, and corrosion-resistant industrial filter nonwoven fabric, belonging to the technical field of industrial filter nonwoven fabrics. Background Technology

[0002] With increasing global environmental awareness, air pollution has garnered widespread attention. Baghouse dust collectors, due to their high efficiency and low energy consumption, have become the primary method for industrial flue gas dust control. Filter media is the core technology of baghouse dust collection systems, and its performance determines the system's effectiveness. Non-woven fabrics are lightweight, environmentally friendly, moisture-proof, breathable, flexible, flame-retardant, non-toxic, non-irritating, and recyclable. Furthermore, their loose texture provides ample space to trap dust, making them widely used in today's pursuit of environmental protection, energy conservation, and lightweight design. In dust filtration applications in industries with severe dust pollution, such as papermaking, metallurgy, and cement plants, higher requirements are placed on the industrial filter non-woven fabrics used in terms of abrasion resistance and strength. Utility Model Content

[0003] The purpose of this invention is to provide a high-strength, wear-resistant, and corrosion-resistant industrial filter nonwoven fabric, which has both high strength and corrosion resistance.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: This utility model relates to a high-strength, wear-resistant, and corrosion-resistant industrial filter nonwoven fabric, comprising a needle-punched composite PTFE base fabric layer and a first aramid fiber web; a second aramid fiber web is needle-punched composite on the other side of the PTFE base fabric layer; the industrial filter nonwoven fabric has an areal density of 500-600 grams per square meter and a thickness of 2.0-2.5 mm.

[0005] Based on the above scheme and as a preferred embodiment of the above scheme: the basis weight of the PTFE base fabric layer is 130 grams per square meter, and the basis weight of the first aramid fiber web and the second aramid fiber web is 200 grams per square meter.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the surfaces of the first aramid fiber web and / or the second aramid fiber web 3 away from the PTFE base layer are subjected to fuzz sintering treatment.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the PTFE base fabric layer is made of interwoven polytetrafluoroethylene filaments.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the first aramid fiber web and the second aramid fiber web use aramid 1313 fiber.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: a first PTFE short fiber web is provided between the PTFE base fabric layer 1 and the first aramid fiber web 2, and a second PTFE short fiber web is provided between the PTFE base fabric layer 1 and the second aramid fiber web 3.

[0010] The beneficial effects of this utility model are as follows: The high-strength, wear-resistant, and corrosion-resistant industrial filter nonwoven fabric involved in this utility model uses a PTFE base fabric layer, which can improve the strength of the industrial filter nonwoven fabric. Both the aramid fiber and PTFE filament used have wear-resistant properties, thus giving the industrial filter nonwoven fabric its wear-resistant effect. Furthermore, the use of needle-punched nonwoven fabric can increase dust holding capacity. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the high-strength, abrasion-resistant, and corrosion-resistant industrial filter nonwoven fabric involved in Example 1; Figure 2 This is a schematic diagram of the high-strength, wear-resistant, and corrosion-resistant industrial filter nonwoven fabric involved in Example 1.

[0012] The markings in the diagram are explained as follows: 1-PTFE base fabric layer; 2-first aramid fiber web; 3-second aramid fiber web; 4-first PTFE short fiber web; 5-second PTFE short fiber web. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] Example 1 Combination Figure 1 This embodiment will be described in detail below. The high-strength, abrasion-resistant industrial filter nonwoven fabric involved in this embodiment includes a needle-punched composite PTFE base fabric layer 1 and a first aramid fiber web 2; a second aramid fiber web 3 is needle-punched composite on the other side of the PTFE base fabric layer 1; the industrial filter nonwoven fabric has an areal density of 500-600 grams per square meter and a thickness of 2.0-2.5 mm.

[0015] Furthermore, the PTFE base fabric layer 1 has a basis weight of 130 g / m², and the first aramid fiber web 2 and the second aramid fiber web 3 have a basis weight of 200 g / m². The surfaces of the first aramid fiber web 2 and / or the second aramid fiber web 3 furring away from the PTFE base fabric layer 1 are subjected to a fuzz sintering treatment. In this embodiment, the fuzz sintering treatment is performed on one side of the first aramid fiber web 2 and the second aramid fiber web 3, thereby reducing the impact of fuzz on dust fallout. After fuzz sintering, the industrial filter nonwoven fabric is subjected to an iron heated pressure roller, with the temperature of the upper and lower roller surfaces controlled between 180-200 degrees Celsius. The thickness of the nonwoven fabric is adjusted at a speed of 6-8 m / min to reduce air permeability and achieve better collection efficiency.

[0016] Furthermore, the PTFE base layer 1 is made of interwoven polytetrafluoroethylene filaments. The first aramid fiber web 2 and the second aramid fiber web 3 are made of aramid 1313 fibers.

[0017] In the preparation process of the industrial filter nonwoven fabric involved in this embodiment, the PTFE base fabric layer 1 and the first aramid fiber web 2 are first stacked and then pre-needled. Next, the second aramid fiber web 3 is stacked on one side of the PTFE base fabric layer 1 and fed into a needle-punching machine. Four needle-punching machines perform needle-punching in different directions, with the needle-punching density controlled between 500-800 pcs / cm² and the needle-punching depth between 5-15 mm, ensuring thorough interweaving of the fibers and enhancing the interweaving force. After needle-punching and lamination, a sintering treatment is performed, followed by hot rolling to adjust the thickness.

[0018] The industrial filter nonwoven fabric prepared in this embodiment was tested for basis weight, thickness, elongation, and air permeability. The basis weight results were: 550.0 g / m², 556.0 g / m², 543.3 g / m², and 540.5 g / m², with an average of 547.5 g / m². The thickness results were: 2.32 mm, 2.31 mm, 2.28 mm, and 2.36 mm, with an average of 2.32 mm. The longitudinal tensile strength results were: 906.9 N, 904.2 N, 867.3 N, and 859.0 N, with an average of 884.4 N. The transverse tensile strength results were: 2066.8 N, 2096.8 N, 2040.0 N, and 1933.2 N, with an average of 2034.2 N. The longitudinal elongation test results were 7.2%, 6.2%, 6.5%, and 7.6%, with an average of 6.9%. The transverse elongation test results were 44.3%, 42.6%, 44.6%, and 42.2%, with an average of 43.4%. The air permeability test result was 25.0 cc / cm². 2 / s, 23.2cc / cm 2 / s, 23.6cc / cm 2 / s, 24.0cc / cm 2 / s, with an average value of 24.0cc / cm 2 / s.

[0019] Example 2 Combination Figure 2 This embodiment will be described in detail below. The high-strength, abrasion-resistant industrial filter nonwoven fabric involved in this embodiment differs from Embodiment 1 in that: a first PTFE short fiber web 4 is disposed between the PTFE base fabric layer 1 and the first aramid fiber web 2, and a second PTFE short fiber web 5 is disposed between the PTFE base fabric layer 1 and the second aramid fiber web 3. The first PTFE short fiber web 4 and the second PTFE short fiber web 5... The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A high-strength, abrasion-resistant, and corrosion-resistant industrial filter nonwoven fabric, characterized in that, It includes a needle-punched composite PTFE base fabric layer (1) and a first aramid fiber web (2); the other side of the PTFE base fabric layer (1) is needle-punched composite with a second aramid fiber web (3); the industrial filter nonwoven fabric has an areal density of 500-600 grams per square meter and a thickness of 2.0-2.5 mm.

2. The high-strength, abrasion-resistant, and corrosion-resistant industrial filter nonwoven fabric according to claim 1, characterized in that, The PTFE base fabric layer (1) has a basis weight of 130 grams per square meter, and the first aramid fiber web (2) and the second aramid fiber web (3) have a basis weight of 200 grams per square meter.

3. The high-strength, wear-resistant, and corrosion-resistant industrial filter nonwoven fabric according to claim 1, characterized in that, The surfaces of the first aramid fiber web (2) and / or the second aramid fiber web (3) away from the PTFE base fabric layer (1) are subjected to fuzz sintering treatment.

4. The high-strength, abrasion-resistant, and corrosion-resistant industrial filter nonwoven fabric according to claim 1, characterized in that, The PTFE base fabric layer (1) is made of interwoven polytetrafluoroethylene filaments.

5. The high-strength, abrasion-resistant, and corrosion-resistant industrial filter nonwoven fabric according to claim 1, characterized in that, The first aramid fiber web (2) and the second aramid fiber web (3) are made of aramid 1313 fiber.

6. The high-strength, abrasion-resistant, and corrosion-resistant industrial filter nonwoven fabric according to claim 1, characterized in that, A first PTFE short fiber web (4) is provided between the PTFE base fabric layer (1) and the first aramid fiber web (2), and a second PTFE short fiber web (5) is provided between the PTFE base fabric layer (1) and the second aramid fiber web (3).

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