A double-layer heat-insulating feulgon transparent shrink tube
By using a composite material design and a reinforced double-layer insulated Teflon transparent shrink tube, the problems of insufficient wear resistance, thermal conductivity and insulation in existing technologies have been solved, achieving stable operation and improved safety in high-temperature environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU AIFULONG NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-21
AI Technical Summary
Existing double-layer insulated Teflon transparent shrink tubing has insufficient performance in terms of wear resistance, thermal conductivity, insulation, creep resistance, fatigue resistance, chemical stability, and high-temperature impact resistance, which reduces its practicality in high-temperature environments.
The outer tube is designed with composite materials, including an outer tube base, a heat-resistant layer, an outer thermally conductive layer, an outer reinforcing layer, and a wear-resistant layer. The inner tube includes an inner tube base, a stabilizing layer, a fireproof layer, an inner reinforcing layer, and a fiber layer. The contact surfaces of each layer are processed by plasma treatment. The outer tube is equipped with a reinforcing structure to enhance the overall performance.
It improves the wear resistance, high temperature resistance, fatigue resistance, insulation and chemical stability of the shrink tubing, enhances the overall strength and stability of the shrink tubing, ensures stable operation in high temperature environments, prevents thermal expansion and fire spread, and improves service life and safety.
Smart Images

Figure CN224533699U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat shrink tubing technology, specifically a double-layer heat-insulated Teflon transparent shrink tubing. Background Technology
[0002] Double-layer insulated Teflon transparent shrink tubing is a type of heat shrink tubing made of polytetrafluoroethylene (PTFE) or fluoroplastic materials, featuring a transparent appearance and heat insulation properties. It is commonly used in...
[0003] Wire and cable protection: Used for insulation of cable joints and protection of lines in high-temperature environments.
[0004] Industrial equipment: such as aerospace components, high-temperature pipelines, chemical equipment, etc., for heat insulation and sealing.
[0005] Medical devices: Meet biocompatibility requirements and are used for the protection of precision medical equipment.
[0006] While conventional double-layer insulated Teflon transparent shrink tubing can meet certain usage requirements, it still has some shortcomings in actual use. For example, it has poor wear resistance, poor thermal conductivity and insulation, insufficient high-temperature rigidity and high-temperature mechanical strength, poor creep resistance and fatigue resistance, and the balance of chemical stability, high-temperature impact resistance and mechanical properties cannot be effectively guaranteed, which greatly reduces the practicality of double-layer insulated Teflon transparent shrink tubing. Utility Model Content
[0007] The purpose of this invention is to provide a double-layer insulated Teflon transparent shrink tube to solve the problems mentioned in the background art.
[0008] To achieve the above objectives, this utility model provides the following technical solution: a double-layer heat-insulating Teflon transparent shrink tube, comprising an outer tube body and a reinforcing structure. The reinforcing structure is horizontally arranged on the outer surface of the outer tube body, and a sleeve joint structure is provided at one end of the outer tube body. A butt joint structure is provided at the end of the outer tube body away from the sleeve joint structure. An inner tube body is connected to the inside of the outer tube body. The outer tube body includes an outer tube base, a heat-resistant layer, an outer heat-conducting layer, an outer reinforcing layer, and a wear-resistant layer. The outer surface of the outer tube base is covered with a heat-resistant layer, and an outer heat-conducting layer is added and covered on the outer surface of the heat-resistant layer. An outer reinforcing layer is sintered on the outer surface of the outer heat-conducting layer, and a wear-resistant layer is covered on the outer surface of the outer reinforcing layer.
[0009] Furthermore, the outer tube substrate is provided with a protective layer structure woven from stainless steel wire, and the heat-resistant layer is made of polyetheretherketone polymer material for blending and modifying the entire outer tube structure.
[0010] Furthermore, the outer thermal conductive layer and the inner thermal conductive layer are made of graphene hybrid material, the outer reinforcing layer is made of silicon dioxide material, and the wear-resistant layer is made of carbon fiber graphite composite material.
[0011] Furthermore, the structural contact surfaces between the outer tube substrate, heat-resistant layer, outer heat-conducting layer, outer reinforcing layer, and wear-resistant layer are all processed by plasma treatment, and the reinforcing structure is arranged in a ring array structure with the outer tube as the center.
[0012] Furthermore, both the socket structure and the mating interface structure are integrally formed with the outer tube and made of the same material, and the inner surface structure of the socket structure matches the outer surface structure of the mating interface structure.
[0013] Furthermore, the inner tube body includes an inner tube substrate, a stabilizing layer, a fireproof layer, an inner reinforcing layer, and a fiber layer. The outer surface of the inner tube substrate is coated with a stabilizing layer, and the outer surface of the stabilizing layer is covered with a fireproof layer. The outer surface of the fireproof layer is covered with an inner reinforcing layer, and the outer surface of the inner reinforcing layer is composited with a fiber layer.
[0014] Furthermore, the inner tube substrate is made of polytetrafluoroethylene vinyl body and aerogel composite, and the stabilizing layer is made of high temperature resistant ceramic coating and sprayed on the outer surface of the inner tube substrate.
[0015] Furthermore, the fireproof layer is made of rock wool, the inner reinforcing layer is made of carbon fiber, and the fiber layer is made of high-temperature resistant glass fiber as the base material. Moreover, the structural contact surfaces between the inner tube matrix, the stabilizing layer, the fireproof layer, the inner reinforcing layer, and the fiber layer are all processed by plasma treatment.
[0016] This utility model provides a double-layer heat-insulating Teflon transparent shrink tube, which has the following beneficial effects:
[0017] 1. This utility model, by using a composite material for the outer tube body and utilizing a heat-resistant layer, an external heat-conducting layer, an external reinforcing layer, and a wear-resistant layer covering the outer surface of the outer tube substrate, comprehensively improves the overall performance of the shrink tube. The stainless steel wire braided outer tube substrate, combined with a heat-resistant layer made of polyetheretherketone polymer material, effectively enhances the wear resistance and high-temperature resistance of the entire shrink tube, achieving a temperature resistance of over 260℃ and improving fatigue resistance. This effectively isolates the shrink tube from the influence of external high temperatures, ensuring stable operation in high-temperature environments. Simultaneously, the external heat-conducting layer is made of graphene-based composite material, possessing excellent thermal conductivity, allowing for rapid cooling of the shrink tube. The internal heat is dissipated while simultaneously meeting insulation requirements to prevent thermal expansion or thermal stress caused by excessive internal temperature. The outer reinforcing layer is made of silicon dioxide, which has high hardness and wear resistance, further enhancing the wear resistance and service life of the shrink tube. The wear-resistant layer is made of carbon fiber and graphite composite material, which improves high-temperature mechanical strength and creep resistance, and reduces the coefficient of thermal expansion, increasing creep resistance at 260℃ by 30-50%. Combined with the use of the outer reinforcing layer, the entire shrink tube not only has excellent wear resistance, but also improves its tensile strength and hardness, ensuring the stability and reliability of the shrink tube during long-term use.
[0018] 2. This utility model, by using a composite material for the inner tube body and utilizing a stabilizing layer, fireproof layer, inner reinforcing layer, and fiber layer on the outer surface of the inner tube substrate, can further improve the overall performance of the shrink tube. The inner tube substrate is made of polytetrafluoroethylene and aerogel composite, which has good chemical stability and high temperature resistance, and can maintain the stability and reliability of the shrink tube in extreme environments. The stabilizing layer is made of high temperature resistant ceramic coating, sprayed on the outer surface of the inner tube substrate, which can enhance the high temperature resistance and oxidation resistance of the shrink tube and prevent performance degradation caused by high temperature oxidation. The fireproof layer is made of... Made of rock wool, it has excellent fire resistance, effectively preventing the spread of fire and protecting the shrink tube and its internal wiring. The inner reinforcing layer is made of carbon fiber, which has high strength and rigidity, further enhancing the tensile strength and hardness of the shrink tube. The fiber layer is made of high-temperature resistant glass fiber as the base material, which has good high-temperature resistance and insulation properties, further improving the high-temperature resistance and safety of the shrink tube. At the same time, the outer tube and the various structural layers of the inner tube are all processed by plasma treatment to ensure a tight bond between the layers and excellent performance.
[0019] 3. This utility model, by providing a reinforcing structure on the outer surface of the outer tube, and in conjunction with the sleeve and interface structures at both ends, can further enhance the overall strength and stability of the shrink tube. The reinforcing structure is distributed in a ring array on the outer surface of the outer tube, which can effectively resist external pressure, impact and vibration, ensuring the stable operation of the shrink tube in various complex environments. At the same time, the sleeve and interface structures facilitate the connection and installation of the shrink tube, improving the convenience and flexibility of use. The inner surface of the sleeve structure and the outer surface of the interface structure match each other, ensuring the tightness and reliability of the connection, and effectively preventing leakage or detachment caused by poor connection. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the axial side view of the main body of a double-layer heat-insulating Teflon transparent shrink tube according to the present invention.
[0021] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the double-layer heat-insulating Teflon transparent shrink tube of this utility model.
[0022] Figure 3 This is a schematic cross-sectional view of the outer tube of a double-layer insulated Teflon transparent shrink tube according to the present invention.
[0023] Figure 4 This is a cross-sectional view of the inner tube of a double-layer insulated Teflon transparent shrink tube according to this utility model.
[0024] In the diagram: 1. Outer tube body; 101. Outer tube substrate; 102. Heat-resistant layer; 103. Outer heat-conducting layer; 104. Outer reinforcing layer; 105. Wear-resistant layer; 2. Reinforcing structure; 3. Sleeve joint structure; 4. Butt joint structure; 5. Inner tube body; 501. Inner tube substrate; 502. Stabilizing layer; 503. Fireproof layer; 504. Inner reinforcing layer; 505. Fiber layer. Detailed Implementation
[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0026] like Figures 1 to 4As shown, a double-layer insulated Teflon transparent shrink tube includes an outer tube body 1 and a reinforcing structure 2. The reinforcing structure 2 is horizontally arranged on the outer surface of the outer tube body 1, and a sleeve structure 3 is provided at one end of the outer tube body 1. A butt joint structure 4 is provided at the end of the outer tube body 1 away from the sleeve structure 3. An inner tube body 5 is connected to the inside of the outer tube body 1. The outer tube body 1 includes an outer tube base 101, a heat-resistant layer 102, an outer heat-conducting layer 103, an outer reinforcing layer 104, and a wear-resistant layer 105. The outer surface of the outer tube base 101 is covered with the heat-resistant layer 102, and the outer surface of the heat-resistant layer 102 is covered with the outer heat-conducting layer 103. The outer surface of the outer heat-conducting layer 103 is sintered with the outer reinforcing layer 104, and the outer surface of the outer reinforcing layer 104 is covered with the wear-resistant layer 105. The outer tube base 101 is provided with a protective layer structure woven from stainless steel wire, and the heat-resistant layer 102 is made of polyetheretherketone polymer material for blending modification. The entire outer tube 1 structure is made of graphene composite material for the outer heat-conducting layer 103 and inner heat-conducting layer 104, silicon dioxide material for the outer reinforcing layer 104, and carbon fiber graphite composite material for the wear-resistant layer 105. The structural contact surfaces between the outer tube substrate 101, heat-resistant layer 102, outer heat-conducting layer 103, outer reinforcing layer 104, and wear-resistant layer 105 are all processed by plasma treatment. The reinforcing structure 2 is arranged in a ring array structure with the outer tube 1 as the center. By utilizing the heat-resistant layer 102, outer heat-conducting layer 103, outer reinforcing layer 104, and wear-resistant layer 105 covering the outer tube substrate 101, the overall performance of the shrink tube can be comprehensively improved. It can also quickly conduct heat out of the shrink tube and meet the insulation requirements at the same time. At the same time, it can make the entire shrink tube have excellent wear resistance, and can also improve the tensile strength and hardness of the shrink tube, ensuring the stability and reliability of the shrink tube during long-term use.
[0027] like Figures 1 to 4As shown, the socket structure 3 and the mating interface structure 4 are both integrally formed with the outer tube body 1 and made of the same material. The inner surface structure of the socket structure 3 matches the outer surface structure of the mating interface structure 4. The inner tube body 5 includes an inner tube substrate 501, a stabilizing layer 502, a fireproof layer 503, an inner reinforcing layer 504, and a fiber layer 505. The outer surface of the inner tube substrate 501 is coated with the stabilizing layer 502, and the outer surface of the stabilizing layer 502 is covered with the fireproof layer 503. The outer surface of the fireproof layer 503 is covered with the inner reinforcing layer 504, and the outer surface of the inner reinforcing layer 504 is composited with the fiber layer 505. The inner tube substrate 501 is made of polytetrafluoroethylene body and aerogel composite, and the stabilizing layer 502 is made of high-temperature resistant ceramic coating and sprayed on the outer surface of the inner tube substrate 501. 3. The material used is rock wool, the inner reinforcing layer 504 is made of carbon fiber, and the fiber layer 505 is made of high-temperature resistant glass fiber as the base material. Moreover, the structural contact surfaces between the inner tube base 501, stabilizing layer 502, fireproof layer 503, inner reinforcing layer 504 and fiber layer 505 are all processed by plasma treatment. By utilizing the inner tube base 501 and the stabilizing layer 502, fireproof layer 503, inner reinforcing layer 504 and fiber layer 505 set on the outer surface, the comprehensive performance of the shrink tube can be further improved. It can maintain the stability and reliability of the shrink tube in extreme environments, and can also enhance the high temperature resistance and oxidation resistance of the shrink tube. At the same time, it has high strength and rigidity, which can further enhance the tensile strength and hardness of the shrink tube, and further improve the high temperature resistance and safety of the shrink tube.
[0028] In summary, as Figures 1 to 4 As shown, this double-layer insulated Teflon transparent shrink tube can be used by first connecting multiple shrink tubes together using the joint structure 3 and the joint structure 4 at both ends of the outer tube 1. The shrinkability allows the length of the shrink tubes to be adjusted or combined according to actual needs to adapt to different application scenarios. In addition, the reinforced structure 2 enables the shrink tube to more effectively disperse stress when subjected to external pressure or tension, avoiding local damage or breakage.
[0029] In practical applications, the outer tube matrix 101 made of stainless steel wire braid and the heat-resistant layer 102 made of polyetheretherketone polymer material can effectively improve the wear resistance and high temperature resistance of the shrink tube; the outer heat-conducting layer 103 made of graphene composite material can quickly conduct internal heat out and meet insulation requirements; the outer reinforcing layer 104 made of silicon dioxide and the wear-resistant layer 105 made of carbon fiber and graphite composite material can further enhance the wear resistance and service life of the shrink tube.
[0030] In addition, the inner tube substrate 501, made of polytetrafluoroethylene vinyl body and aerogel composite, and the stabilizing layer 502, made of high-temperature resistant ceramic coating, can effectively improve the chemical stability and oxidation resistance of the shrink tube under high-temperature environment; the fireproof layer 503 made of rock wool and the inner reinforcing layer 504 made of carbon fiber can further enhance the fire resistance and tensile strength of the shrink tube; the fiber layer 505 made of high-temperature resistant glass fiber can improve the insulation performance and safety of the shrink tube. These designs enable the double-layer heat-insulated Teflon transparent shrink tube to maintain stable operation in a variety of complex environments, while possessing good wear resistance, high temperature resistance, fire resistance and insulation properties, thereby ensuring the stable operation of the circuit.
[0031] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A double-layer insulated Teflon transparent shrink tube, comprising an outer tube body (1) and a reinforcing structure (2), characterized in that: The outer tube (1) has a horizontally arranged reinforcing structure (2) on its outer surface, and a sleeve structure (3) is provided at one end of the outer tube (1). The outer tube (1) is also provided with a butt joint structure (4) at the end away from the sleeve structure (3). The inner tube (5) is connected to the inner surface of the outer tube (1). The outer tube (1) includes an outer tube base (101), a heat-resistant layer (102), an outer heat-conducting layer (103), an outer reinforcing layer (104), and a wear-resistant layer (105). The outer surface of the outer tube base (101) is covered with a heat-resistant layer (102), and an outer heat-conducting layer (103) is added to the outer surface of the heat-resistant layer (102). An outer reinforcing layer (104) is sintered on the outer surface of the outer heat-conducting layer (103), and a wear-resistant layer (105) is covered on the outer surface of the outer reinforcing layer (104).
2. The double-layer insulated Teflon transparent shrink tube according to claim 1, characterized in that, The outer tube substrate (101) is provided with a protective layer structure woven from stainless steel wire, and the heat-resistant layer (102) is made of polyether ether ketone polymer material for blending and modifying the entire outer tube structure (1).
3. The double-layer insulated Teflon transparent shrink tube according to claim 1, characterized in that, The outer thermal conductive layer (103) and the inner thermal conductive layer are made of graphene hybrid material, the outer reinforcing layer (104) is made of silicon dioxide material, and the wear-resistant layer (105) is made of carbon fiber graphite composite material.
4. The double-layer insulated Teflon transparent shrink tube according to claim 1, characterized in that, The structural contact surfaces between the outer tube substrate (101), heat-resistant layer (102), outer heat-conducting layer (103), outer reinforcing layer (104) and wear-resistant layer (105) are all processed by plasma treatment. The reinforcing structure (2) is arranged in a ring array structure with the outer tube body (1) as the center.
5. A double-layer insulated Teflon transparent shrink tube according to claim 1, characterized in that, The socket structure (3) and the mating structure (4) are both integrally formed with the outer tube body (1) and made of the same material. The inner surface structure of the socket structure (3) matches the outer surface structure of the mating structure (4).
6. The double-layer insulated Teflon transparent shrink tube according to claim 1, characterized in that, The inner tube body (5) includes an inner tube substrate (501), a stabilizing layer (502), a fireproof layer (503), an inner reinforcing layer (504), and a fiber layer (505). The outer surface of the inner tube substrate (501) is coated with a stabilizing layer (502), and the outer surface of the stabilizing layer (502) is covered with a fireproof layer (503). The outer surface of the fireproof layer (503) is covered with an inner reinforcing layer (504), and the outer surface of the inner reinforcing layer (504) is composited with a fiber layer (505).
7. A double-layer insulated Teflon transparent shrink tube according to claim 6, characterized in that, The inner tube substrate (501) is made of polytetrafluoroethylene vinyl body and aerogel composite, and the stabilizing layer (502) is made of high temperature resistant ceramic coating and sprayed on the outer surface of the inner tube substrate (501).
8. A double-layer insulated Teflon transparent shrink tube according to claim 6, characterized in that, The fireproof layer (503) is made of rock wool, the inner reinforcing layer (504) is made of carbon fiber, and the fiber layer (505) is made of high-temperature resistant glass fiber as the base material. Moreover, the structural contact surfaces between the inner tube substrate (501), the stabilizing layer (502), the fireproof layer (503), the inner reinforcing layer (504), and the fiber layer (505) are all processed by plasma treatment.