Anti-corrosion heat shrink tube

Abstract

The utility model discloses an anti-corrosion heat shrink tube, which relates to the technical field of heat shrink tubes, and comprises an inner layer structure, a middle layer structure, an outer layer structure and wear-resistant grains, the middle layer structure is arranged on the outer wall of the inner layer structure, the middle layer structure is used for buffering and corrosion prevention of a tube body, and the outer layer structure is arranged on the outer wall of the middle layer structure. And the wear-resistant lines are arranged on the outer wall of the outer layer structure. Through a multi-layer composite structure composed of the inner layer structure, the middle layer structure, the outer layer structure and the wear-resistant lines, all-around protection on the target pipe body is achieved, dynamic corrosion prevention, tight bonding and corrosion inhibitor release are achieved, the axial fixing force is enhanced through the anti-skid teeth and the two-way tooth lines, the connection firmness between the heat shrink pipe and the target pipe body is improved, and the service life of the heat shrink pipe is prolonged. The buffer sleeve and the anti-corrosion layer are arranged to absorb impact and block corrosive media, and the modified polyolefin pipe, the high-temperature-resistant layer, the anti-ultraviolet layer and the wear-resistant layer are arranged to tolerate extreme environments, so that the service life of the heat shrink tube is prolonged, and the heat shrink tube can be stably used.

Description

Technical Field

[0001] This utility model relates to the field of heat shrink tubing technology, and in particular to a corrosion-resistant heat shrink tubing. Background Technology

[0002] Heat shrink tubing is a functional tubing material widely used in fields such as wire and cable protection, pipeline corrosion prevention, and electronic component insulation. It is formed by shrinking under heat to tightly wrap around the surface of the target object, creating a protective layer.

[0003] Existing heat shrink tubing is typically made of polyolefin material with a hot melt adhesive coating the inner cavity for easy application to the target tubing. However, conventional heat shrink tubing relies on the outer layer to passively block corrosive media. If damaged or with an inadequate seal, moisture, acids, or alkalis can easily penetrate. Furthermore, corrosion of the inner wall can lead to leakage of the contents, resulting in low corrosion resistance. Additionally, the adhesion between the heat shrink tubing and the target tubing relies on hot melt adhesive, which is less effective in high-temperature or vibrating environments. Under vibration, the heat shrink tubing may loosen and detach, affecting its stability in use. Utility Model Content

[0004] The purpose of this invention is to provide a corrosion-resistant heat shrink tubing to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant heat shrink tubing, comprising:

[0006] Inner structure;

[0007] An intermediate layer structure is disposed on the outer wall of the inner layer structure, and the intermediate layer structure is used for buffering and corrosion protection of the pipe body;

[0008] An outer layer structure is disposed on the outer wall of the intermediate layer structure, and the outer layer structure is used for the protection of the outer wall of the tube.

[0009] Abrasion-resistant texture, which is formed on the outer wall of the outer layer structure.

[0010] Preferably, the inner layer structure includes:

[0011] A polyurethane inner sleeve, which is connected to the intermediate layer structure;

[0012] Hot melt adhesive, wherein the hot melt adhesive is disposed on the inner wall of the polyurethane inner sleeve;

[0013] The corrosion-resistant components are arranged in multiple annular arrays embedded in the inner wall of the hot melt adhesive.

[0014] Preferably, the corrosion-resistant component includes:

[0015] A fixing film is fixed to the inner wall of the hot melt adhesive;

[0016] Anti-slip teeth, a plurality of said anti-slip teeth are fixed in the inner cavity of the fixed membrane;

[0017] A corrosion inhibitor, which fills the cavity of the fixed membrane.

[0018] Preferably, the plurality of anti-slip teeth are obliquely fixed to the inner wall of the fixed film in opposite directions, and the corrosion inhibitor is disposed on the outside of the anti-slip teeth.

[0019] Preferably, the intermediate layer structure includes:

[0020] A buffer sleeve, which is fixed to the outer wall of a polyurethane inner sleeve;

[0021] The anti-corrosion layer is fixed to the outer wall of the buffer sleeve.

[0022] Preferably, the outer layer structure includes:

[0023] A modified polyolefin pipe, wherein the modified polyolefin pipe is fixed to the outer wall of the anti-corrosion layer;

[0024] A high-temperature resistant layer is fixed to the outer wall of the modified polyolefin tube;

[0025] An anti-ultraviolet layer, which is fixed to the outer wall of the high-temperature resistant layer;

[0026] A wear-resistant layer is fixed to the outer wall of the UV-resistant layer, and the wear-resistant texture is formed on the outer wall of the wear-resistant layer.

[0027] The technical effects and advantages of this utility model are as follows:

[0028] This invention utilizes a multi-layered composite structure consisting of an inner layer, a middle layer, an outer layer, and wear-resistant textures to achieve comprehensive protection for the target tube. The polyurethane inner sleeve, hot melt adhesive, and corrosion-resistant components provide dynamic corrosion protection and tight adhesion. Simultaneously, during heat shrinking, the anti-slip teeth pierce the EVA fixing film, releasing corrosion inhibitors and filling the gap between the tube and the hot melt adhesive. The bidirectional teeth of the anti-slip teeth enhance axial fixing force, improving the connection strength between the heat shrink tubing and the target tube. The buffer sleeve and anti-corrosion layer absorb impact and block corrosive media. The modified polyolefin tube, high-temperature resistant layer, UV-resistant layer, and wear-resistant layer withstand extreme environments, extending the service life of the heat shrink tubing and ensuring its stable use. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0030] Figure 2This is a schematic diagram of the overall front cross-sectional structure of this utility model.

[0031] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0032] In the diagram: 1. Inner layer structure; 11. Polyurethane inner sleeve; 12. Hot melt adhesive; 13. Corrosion resistant component; 131. Fixing membrane; 132. Anti-slip teeth; 133. Corrosion inhibitor; 2. Intermediate layer structure; 21. Buffer sleeve; 22. Anti-corrosion layer; 3. Outer layer structure; 31. Modified polyolefin tube; 32. High temperature resistant layer; 33. UV resistant layer; 34. Wear-resistant layer; 4. Wear-resistant texture. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] This utility model provides, for example Figure 1-3 The corrosion-resistant heat shrink tubing shown includes an inner layer structure 1, a middle layer structure 2, an outer layer structure 3, and wear-resistant grooves 4. The middle layer structure 2 is disposed on the outer wall of the inner layer structure 1 and is used for buffering and corrosion protection of the tubing body. The outer layer structure 3 is disposed on the outer wall of the middle layer structure 2 and is used for protection of the outer wall of the tubing body. The wear-resistant grooves 4 are formed on the outer wall of the outer layer structure 3. The wear-resistant grooves 4 are provided to increase the friction of the outer wall of the tubing body.

[0035] The inner layer structure 1 includes a polyurethane inner sleeve 11, hot melt adhesive 12, and corrosion-resistant components 13. The polyurethane inner sleeve 11 is connected to the intermediate layer structure 2. The hot melt adhesive 12 is disposed on the inner wall of the polyurethane inner sleeve 11. The polyurethane inner sleeve 11 facilitates the stable annular coating of the hot melt adhesive 12, allowing it to be heat-shrinkable onto the tube body. Multiple corrosion-resistant components 13 are embedded in the inner wall of the hot melt adhesive 12 in multiple annular arrays, which helps to reduce the corrosion impact on the outer wall of the tube body covered by the hot melt adhesive 12 and improve the stability of the heat shrink tubing.

[0036] Specifically, the corrosion-resistant component 13 includes a fixing film 131, anti-slip teeth 132, and a corrosion inhibitor 133. The fixing film 131 is fixed to the inner wall of the hot melt adhesive 12. The fixing film 131 is made of EVA film material. Multiple anti-slip teeth 132 are fixed to the inner cavity of the fixing film 131. The anti-slip teeth 132 are plastic teeth and are obliquely fixed to the inner wall of the fixing film 131 in opposite directions. The corrosion inhibitor 133 fills the inner cavity of the fixing film 131. The corrosion inhibitor 133 is molybdate gel. The corrosion inhibitor 133 can continuously inhibit corrosion on the target tube body and repair micro-cracks. The corrosion inhibitor 133 is disposed on the outside of the anti-slip teeth 132. When the heat shrink tubing is heat-shrinked, the inner layer structure 1 is heat-shrinkably bonded to the tubing body. The anti-slip teeth 132 approach the tubing wall and puncture the fixing film 131, allowing the corrosion inhibitor 133 to flow out from the inner cavity of the fixing film 131 and fill the space between the hot melt adhesive 12 and the tubing body. This helps reduce the corrosion impact on the outer wall of the tubing body, improves corrosion resistance, and ensures that the anti-slip teeth 132 are tightly bonded to the outer wall of the tubing body. The anti-slip teeth 132 are embedded in the surface of the tubing substrate, and the bidirectional teeth 132 enhance the axial fixing force, resist vibration displacement, and improve the firmness of the inner layer structure 1 on the outer wall of the tubing body. This prevents the heat shrink tubing from being pulled out of the outer wall of the tubing body at will, making the installation more secure and improving the stability of the heat shrink tubing in use.

[0037] In addition, the intermediate layer structure 2 includes a buffer sleeve 21 and an anti-corrosion layer 22. The buffer sleeve 21 is made of EPDM rubber and is fixed to the outer wall of the polyurethane inner sleeve 11. The anti-corrosion layer 22 is fixed to the outer wall of the buffer sleeve 21. The buffer sleeve 21 reduces the impact of the outer wall compression deformation on the heat shrink tubing. The anti-corrosion layer 22 helps to block the corrosive effects of external corrosive media on the tubing on the inner layer structure 1. Through the release of corrosion inhibitor 133 and the double anti-corrosion of the anti-corrosion layer 22, the anti-corrosion performance of the heat shrink tubing is further improved.

[0038] Furthermore, the outer structure 3 includes a modified polyolefin tube 31, a high-temperature resistant layer 32, an anti-ultraviolet layer 33, and a wear-resistant layer 34. The modified polyolefin tube 31 is fixed to the outer wall of the anti-corrosion layer 22. The high-temperature resistant layer 32 is fixed to the outer wall of the modified polyolefin tube 31 to improve the high-temperature resistance of the outer wall of the heat shrink tubing. The anti-ultraviolet layer 33 is fixed to the outer wall of the high-temperature resistant layer 32. The setting of the anti-ultraviolet layer 33 and the high-temperature resistant layer 32 improves the high-temperature resistance and anti-ultraviolet resistance of the heat shrink tubing, reduces the embrittlement phenomenon of the heat shrink tubing, increases the service life of the heat shrink tubing, and enhances environmental adaptability. The wear-resistant layer 34 is fixed to the outer wall of the anti-ultraviolet layer 33. Wear-resistant grooves 4 are formed on the outer wall of the wear-resistant layer 34. The setting of the wear-resistant layer 34 improves the wear resistance and friction of the outer wall of the heat shrink tubing, making it easier to grip during manual or mechanical installation, so that the heat shrink tubing can be used stably.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A corrosion-resistant heat shrink tubing, characterized in that, include: Inner structure (1); Intermediate layer structure (2), the intermediate layer structure (2) is disposed on the outer wall of the inner layer structure (1), the intermediate layer structure (2) is used for the buffer and corrosion protection of the pipe body; The outer layer structure (3) is disposed on the outer wall of the intermediate layer structure (2) and is used for the protection of the outer wall of the tube. Abrasion-resistant texture (4) is formed on the outer wall of the outer structure (3).

2. The corrosion-resistant heat shrink tubing according to claim 1, characterized in that, The inner structure (1) includes: A polyurethane inner sleeve (11) is connected to the intermediate layer structure (2); Hot melt adhesive (12), the hot melt adhesive (12) is disposed on the inner wall of the polyurethane inner sleeve (11); Corrosion-resistant components (13), a plurality of said corrosion-resistant components (13) are embedded in the inner wall of hot melt adhesive (12) in a plurality of annular arrays.

3. The corrosion-resistant heat shrink tubing according to claim 2, characterized in that, The corrosion-resistant component (13) includes: A fixing film (131) is fixed to the inner wall of the hot melt adhesive (12); Anti-slip teeth (132), a plurality of said anti-slip teeth (132) are fixed to the inner cavity of the fixing membrane (131); Corrosion inhibitor (133) is filled in the cavity of the fixed film (131).

4. The corrosion-resistant heat shrink tubing according to claim 3, characterized in that, Multiple anti-slip teeth (132) are obliquely fixed to the inner wall of the fixing film (131) in opposite directions, and the corrosion inhibitor (133) is disposed on the outside of the anti-slip teeth (132).

5. The corrosion-resistant heat shrink tubing according to claim 2, characterized in that, The intermediate layer structure (2) includes: A buffer sleeve (21) is fixed to the outer wall of a polyurethane inner sleeve (11); Anti-corrosion layer (22) is fixed to the outer wall of the buffer sleeve (21).

6. The corrosion-resistant heat shrink tubing according to claim 5, characterized in that, The outer structure (3) includes: A modified polyolefin tube (31) is fixed to the outer wall of the anti-corrosion layer (22); A high-temperature resistant layer (32) is fixed to the outer wall of the modified polyolefin tube (31); An anti-ultraviolet layer (33) is fixed to the outer wall of a high-temperature resistant layer (32); A wear-resistant layer (34) is fixed to the outer wall of the UV-resistant layer (33), and the wear-resistant texture (4) is formed on the outer wall of the wear-resistant layer (34).

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