Anti-pulling enhanced PTFE (Polytetrafluoroethylene) film

Abstract

The utility model belongs to the field of PTFE (Polytetrafluoroethylene) films, and particularly relates to a pull-resistant reinforced PTFE film which comprises a net weaving mechanism and PTFE inner film layers arranged on two sides of the net weaving mechanism, the outer layer of the PTFE inner film layer is connected with a PTFE outer film layer, and the outer layer of the PTFE outer film layer is sequentially provided with an antistatic layer and a wear-resistant coating; the net weaving mechanism comprises a first fiber bundle, a second fiber bundle and an interweaving knot; the whole formed by interweaving the two first fiber bundles and the two second fiber bundles with the interweaving knot is of an X-shaped structure, when the X-shaped structure is pulled by external force, pulling force in the transverse and longitudinal directions drives the first fiber bundles or the second fiber bundles in the inclined direction to be switched from a bent state to a stretching state, the pulling force is consumed in the stretching process, and the pulling force is reduced in the pulling process. The first fiber bundles or the second fiber bundles in the same inclined direction stretch in a segmented and opposite mode, so that stress in the inclined direction deviates in a segmented mode, a net weaving mechanism serving as a base layer is kept in a stable state, and the anti-pulling performance of the PTFE film is improved.

Description

Technical Field

[0001] The utility model relates to the field of PTFE membranes, in particular to a tensile-resistant enhanced PTFE membrane. Background Art

[0002] PTFE membrane is a microporous film made of polytetrafluoroethylene dispersed resin through special processes such as premixing, extrusion, calendering, and biaxial stretching.

[0003] The prior art has the following problems:

[0004] The PTFE membrane needs to be pulled and deformed during use to adapt to different usage scenarios. If the pulling amplitude is too large, it may easily cause damage to the pulling points, thus causing the entire PTFE membrane to be scrapped. The reason why the PTFE membrane is damaged due to excessive pulling amplitude is that the pulling points are subjected to uneven horizontal and vertical tension, and the base layer is damaged in advance, and the outer composite membrane layer is damaged to varying degrees. Utility Model Content

[0005] (I) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a tensile-resistant reinforced PTFE membrane, which has the characteristics of a base layer curved mesh structure design to disperse the tension to improve the tensile resistance.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a tensile-resistant reinforced PTFE membrane, comprising a mesh weaving mechanism and a PTFE inner membrane layer arranged on both sides of the mesh weaving mechanism;

[0009] The outer layer of the PTFE inner film layer is connected to the PTFE outer film layer, and the outer layer of the PTFE outer film layer is sequentially provided with an antistatic layer and a wear-resistant coating;

[0010] The weaving mechanism includes a first fiber bundle, a second fiber bundle and an interweaving knot. The first fiber bundle and the second fiber bundle are both "arc-shaped" structures, and adjacent first fiber bundles and second fiber bundles are connected by the interweaving knot.

[0011] Preferably, the thickness of the PTFE outer film layer is half of the thickness of the PTFE inner film layer, and the PTFE outer film layer and the PTFE inner film layer are bonded and formed.

[0012] Preferably, the two first fiber bundles or the two second fiber bundles interwoven at one interwoven knot have opposite bending directions.

[0013] Preferably, the two first fiber bundles and the two second fiber bundles interwoven with the interweaving knot form an "X-shaped" structure as a whole.

[0014] Preferably, an air gap is left between the first fiber bundle and the second fiber bundle.

[0015] Preferably, the wear-resistant coating is formed by spraying a wear-resistant coating on the surface of the antistatic layer.

[0016] The above-mentioned technical scheme of the utility model has the following beneficial technical effects: the two first fiber bundles and the two second fiber bundles are interwoven with the interweaving knot to form an "X-shaped" structure as a whole. When pulled by external force, the tension in the horizontal and vertical directions drives the first fiber bundle or the second fiber bundle in the inclined direction to switch from a bent state to a stretched state, and the tension is consumed in the stretching process. During the pulling process, the first fiber bundle or the second fiber bundle in the same inclined direction is stretched in opposite segments, so that the force-bearing segments in the inclined direction are offset, so that the woven mesh structure serving as the base layer remains in a stable state, thereby improving the tensile resistance of the PTFE membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the net weaving mechanism of the utility model.

[0020] Reference numerals:

[0021] 11. First fiber bundle; 12. Second fiber bundle; 13. Interwoven knot; 2. PTFE inner film layer; 3. PTFE outer film layer; 4. Antistatic layer; 5. Wear-resistant coating. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0023] like Figure 1-3 As shown, the utility model proposes a tensile-resistant reinforced PTFE membrane, which includes a mesh mechanism and a PTFE inner membrane layer 2 arranged on both sides of the mesh mechanism;

[0024] The outer layer of the PTFE inner film layer 2 is connected to the PTFE outer film layer 3, and the outer layer of the PTFE outer film layer 3 is sequentially provided with an antistatic layer 4 and a wear-resistant coating 5;

[0025] The weaving mechanism includes a first fiber bundle 11 , a second fiber bundle 12 and an interweaving knot 13 . The first fiber bundle 11 and the second fiber bundle 12 are both “arc-shaped” structures, and adjacent first fiber bundles 11 and second fiber bundles 12 are connected by the interweaving knot 13 .

[0026] It should be noted that the two first fiber bundles 11 or the two second fiber bundles 12 interwoven on an interwoven knot 13 have opposite bending directions. Taking the first fiber bundle 11 as an example, the two first fiber bundles 11 and the interwoven knot 13 form a "snake-shaped" whole, and when pulled by external force, they deform in opposite directions.

[0027] In this embodiment, the two first fiber bundles 11 and the two second fiber bundles 12 are interwoven with the interweaving knot 13 to form an "X-shaped" structure as a whole. When pulled by external force, the tension in the horizontal and vertical directions drives the first fiber bundles 11 or the second fiber bundles 12 in the inclined direction to switch from a bent state to a stretched state, and the tension is consumed in the stretching process. In the pulling process, the first fiber bundles 11 or the second fiber bundles 12 in the same inclined direction are stretched in opposite segments, so that the force-bearing segments in the inclined direction are offset, so that the woven mesh structure serving as the base layer remains in a stable state, thereby improving the tensile resistance of the PTFE membrane.

[0028] It should be added that an air gap is left between the first fiber bundle 11 and the second fiber bundle 12, and the air gap allows gas to penetrate the inner and outer layers of the PTFE membrane.

[0029] like Figure 1-2 As shown, the thickness of the PTFE outer film layer 3 is half of the PTFE inner film layer 2, and the PTFE outer film layer 3 and the PTFE inner film layer 2 are bonded and formed.

[0030] It should be noted that the PTFE outer film layer 3 and the PTFE inner film layer 2 are compositely formed to increase the overall thickness of the PTFE film, and are layered and installed on both sides of the mesh structure, so there is no need to distinguish between the front and back sides when using them.

[0031] Among them, the wear-resistant coating 5 is formed by spraying the wear-resistant coating on the surface of the antistatic layer 4; the wear-resistant coating is an inorganic-organic interpenetrating network polymer, which makes the coating have both the advantages of inorganic materials and the advantages of polymer materials, and because the interpenetrating network structure is formed between the two components, additional performance is improved, and it is formed on the antistatic layer 4 to improve the wear resistance of its surface. The antistatic layer includes an antistatic coating prepared from a conductive material and an acrylic resin.

[0032] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A tensile-resistant reinforced PTFE membrane, characterized in that: It comprises a mesh weaving mechanism and a PTFE inner membrane layer (2) arranged on both sides of the mesh weaving mechanism; The outer layer of the PTFE inner film layer (2) is connected to the PTFE outer film layer (3), and the outer layer of the PTFE outer film layer (3) is sequentially provided with an antistatic layer (4) and a wear-resistant coating (5); The weaving mechanism comprises a first fiber bundle (11), a second fiber bundle (12) and an interweaving knot (13); the first fiber bundle (11) and the second fiber bundle (12) are both "arc-shaped" structures, and adjacent first fiber bundles (11) and second fiber bundles (12) are connected via the interweaving knot (13).

2. A tensile-resistant reinforced PTFE membrane according to claim 1, characterized in that: The thickness of the PTFE outer film layer (3) is half of the thickness of the PTFE inner film layer (2), and the PTFE outer film layer (3) and the PTFE inner film layer (2) are bonded and formed.

3. The tear-resistant reinforced PTFE membrane according to claim 1, characterized in that: The two first fiber bundles (11) or the two second fiber bundles (12) interwoven on one interwoven knot (13) have opposite bending directions.

4. The tear-resistant reinforced PTFE membrane according to claim 3, characterized in that: The two first fiber bundles (11) and the two second fiber bundles (12) interwoven with the interweaving knot (13) form an "X-shaped" structure as a whole.

5. The tear-resistant reinforced PTFE membrane according to claim 1, characterized in that: An air gap is left between the first fiber bundle (11) and the second fiber bundle (12).

6. The tear-resistant reinforced PTFE membrane according to claim 1, characterized in that: The wear-resistant coating (5) is formed by spraying a wear-resistant coating on the surface of the antistatic layer (4).

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