Stain and stick resistant cable
The anti-fouling and anti-sticking cable, designed with multi-layer structure and materials, solves the problems of insulation performance degradation and mechanical strength reduction of traditional cables in complex polluted environments. It achieves efficient protection against three-phase pollutants (oil, water, and solid) and easy cleaning, thus extending the service life of the cable.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN HONGTUBAO CABLE CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional cables are prone to insulation degradation and decreased mechanical strength in complex and polluted environments. They are particularly ineffective in protecting against liquid pollutants, and increasing the sheath thickness leads to an increase in the cable bending radius and deterioration in heat dissipation.
The cable features a multi-layered anti-fouling and anti-sticking design, including a protective layer, an anti-fouling composite layer, and a filling layer. By utilizing the synergistic effect of different materials, it blocks and prevents the intrusion of pollutants, and the anti-fouling coating is specially designed to reduce the adhesion of pollutants while maintaining the cable's flexibility.
It achieves efficient and synergistic protection against three-phase contaminants (oil, water, and solid), extends cable service life, maintains cable flexibility and safety stability, and avoids the degradation of insulation performance and decrease in mechanical strength of traditional cables in complex environments.
Smart Images
Figure CN224472219U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cables, and in particular to a dirt-resistant and non-sticky cable. Background Technology
[0002] As a critical component for power transmission and signal control, cables are exposed to complex pollution sources such as oil, dust, and salt spray in outdoor industrial, rail transportation, and near-shore environments. Traditional cable sheath materials are prone to forming conductive pathways or chemical corrosion after contaminants adhere to them, leading to deterioration of insulation performance, increased partial discharge, and decreased mechanical strength. Especially in oil refineries and food processing plants, the adhesion of grease and organic matter can cause material swelling and cracking, severely impacting cable lifespan and safety stability.
[0003] Existing anti-pollution cables typically employ a PVC outer sheath with a surface embossing process. This increases roughness to delay contaminant adhesion. While this can temporarily block some solid particles, it is ineffective against liquid contaminants due to insufficient surface contact angle, allowing oily substances to easily penetrate along the texture gaps. Furthermore, excessively increasing the sheath thickness to enhance anti-pollution performance leads to a larger cable bending radius and deteriorated heat dissipation. Utility Model Content
[0004] In order to maintain the flexibility of the cable while achieving efficient synergistic protection against oil, water and solid three-phase contaminants and easy cleaning, this application provides a contamination-resistant and non-sticky cable.
[0005] To achieve the above objectives, this application adopts the following technical solution:
[0006] A pollution-resistant and anti-sticking cable includes a protective layer covering the outside of the cable core; a pollution-resistant composite layer including a first barrier layer, a second barrier layer, and a pollution-resistant coating, wherein the first barrier layer covers the outside of the protective layer, the second barrier layer covers the outside of the first barrier layer, and the pollution-resistant coating covers the outside of the second barrier layer, and the thickness of the pollution-resistant coating is 80-120μm; and a filling layer including a first filling layer and a second filling layer, wherein the first filling layer fills the space between the cable core and the protective layer, and the second filling layer fills the space between the protective layer and the pollution-resistant composite layer.
[0007] By employing the aforementioned device, the first and second barrier layers work together to effectively block the intrusion of various contaminants. Specifically, the second barrier layer can initially block some contaminants, the first barrier layer further enhances the barrier effect, and the anti-fouling coating, with its own properties, makes it difficult for contaminants to adhere, achieving a highly efficient anti-fouling function. The first filler layer in the filler layer is placed between the cable core and the protective layer, while the second filler layer is placed between the protective layer and the anti-fouling composite layer. On the one hand, the filler layers act as a buffer and support, preventing the cable from being deformed by external forces during use; on the other hand, unlike traditional methods that excessively increase the sheath thickness to improve anti-fouling performance, this does not lead to an increased cable bending radius, thus maintaining the cable's flexibility. Furthermore, the anti-fouling composite layer and the filler layer work together. When external pollutants attempt to penetrate the cable, the anti-fouling composite layer first provides protection, reducing the chance of contact between the pollutants and the filler layer. Meanwhile, the excellent structural stability of the filler layer ensures that the anti-fouling composite layer always tightly covers the outer layer of the cable, maintaining its anti-fouling performance. This achieves efficient and synergistic protection against oil, water, and solid three-phase pollutants while maintaining the cable's flexibility and providing easy cleaning. It solves the problems of insulation performance degradation and mechanical strength reduction in traditional cables under complex pollution environments, extending the cable's service life and safety stability.
[0008] Preferably, the antifouling coating comprises a base coat and a top coat, wherein the thickness ratio of the base coat and the top coat is (1-1.2):(0.5-0.8).
[0009] By using the above-mentioned device, the anti-fouling coating can be made to perform better in terms of anti-fouling performance by controlling the coating thickness, thereby further improving the overall anti-fouling and anti-sticking ability of the cable.
[0010] Preferably, the surface coating is an organosilicon-based polyurethane coating.
[0011] Preferably, the base coating is a fluorocarbon resin coating.
[0012] By employing the aforementioned device, the base coating is a fluorocarbon resin coating. Fluorocarbon resin coatings possess excellent weather resistance, chemical corrosion resistance, and low surface energy, effectively reducing contaminant adhesion to the cable surface and making any adhering contaminants less likely to adhere firmly. The top coating is an organosilicon-based polyurethane coating. Organosilicon-based polyurethane coatings have good flexibility and abrasion resistance, further enhancing the physical protective properties of the cable surface and further improving its self-cleaning and anti-sticking properties. The combination of these two coatings avoids the formation of conductive pathways or chemical corrosion in traditional cable sheath materials after contaminant adhesion, prevents the mixing of grease and organic matter from causing material swelling and cracking, and solves the problem of easy penetration of oily substances into existing anti-pollution cables when exposed to liquid contaminants. This improves the cable's insulation performance, reduces partial discharge, maintains mechanical strength, and ensures the cable's service life and safety stability.
[0013] Preferably, the first barrier layer is a nitrile rubber layer, and the second barrier layer is a polyvinylidene fluoride layer.
[0014] By employing the aforementioned device, the first barrier layer is a nitrile rubber layer. Nitrile rubber possesses excellent oil resistance and chemical corrosion resistance, effectively preventing oil, chemicals, and other substances from eroding the internal structure of the cable. The second barrier layer is a polyvinylidene fluoride (PVDF) layer. PVDF exhibits excellent chemical stability, weather resistance, and anti-fouling capabilities, further blocking external pollutants such as salt spray and dust, reducing their damage to the cable. The synergistic effect of these two layers forms a double protective barrier, significantly enhancing the cable's resistance to complex external pollutants such as oil, dust, and salt spray, thus better protecting the cable's internal structure.
[0015] Preferably, the protective layer includes an inner protective layer and an outer protective layer. The inner protective layer is disposed between the first filling layer and the first barrier layer, and the outer protective layer is disposed between the second filling layer and the second barrier layer. An adhesive layer is disposed between the inner protective layer and the first barrier layer, and between the outer protective layer and the second barrier layer.
[0016] By employing the aforementioned device, the inner and outer sheaths provide multiple layers of protection for the cable core, thereby enhancing the cable's protective performance. The adhesive layers placed between the inner sheath and the first barrier layer, and between the outer sheath and the second barrier layer, strengthen the connection between the layers, making the cable structure more stable and preventing relative displacement or separation between the layers, thus ensuring the overall stability and reliability of the cable's performance.
[0017] Preferably, the inner protective layer is a polyethylene layer, and the outer protective layer is an aramid fiber reinforced silicone rubber layer.
[0018] By adopting the above-mentioned device, the inner sheath is made of polyethylene, which can protect the cable core with the good chemical stability, electrical insulation and corrosion resistance of polyethylene. The outer sheath is made of aramid fiber reinforced silicone rubber. The aramid fiber can enhance the mechanical strength of the silicone rubber, so that the outer sheath has better wear resistance, tear resistance and tensile strength, thereby comprehensively improving the overall performance of the cable.
[0019] Preferably, the first filling layer is a filling particle layer, and the second filling layer is filled with water-resistant yarn.
[0020] By using the above-mentioned device, a filling particle layer is set between the cable core and the protective layer as the first filling layer, which can play a certain supporting and buffering role; a water-blocking yarn is used as the second filling layer between the protective layer and the anti-fouling composite layer, which can effectively prevent moisture from penetrating into the cable and improve the cable's moisture resistance.
[0021] This application has the following beneficial effects:
[0022] 1. In this application, the first barrier layer and the second barrier layer work together to effectively block the intrusion of various contaminants. Specifically, the second barrier layer can initially block some contaminants, the first barrier layer further enhances the barrier effect, and the anti-fouling coating, with its own properties, makes it difficult for contaminants to adhere, achieving a highly efficient anti-fouling function. The first filler layer in the filler layer is filled between the cable core and the protective layer, and the second filler layer is filled between the protective layer and the anti-fouling composite layer. On the one hand, the filler layer plays a buffering and supporting role, preventing the cable from being deformed by external forces during use. On the other hand, unlike traditional methods that excessively increase the sheath thickness to improve anti-fouling performance, it does not lead to an increase in the cable bending radius, thus maintaining the cable's flexibility. Furthermore, the anti-fouling composite layer and the filler layer work together. When external pollutants attempt to penetrate the cable, the anti-fouling composite layer first provides protection, reducing the chance of contact between the pollutants and the filler layer. Meanwhile, the excellent structural stability of the filler layer ensures that the anti-fouling composite layer always tightly covers the outer layer of the cable, maintaining its anti-fouling performance. This achieves efficient and synergistic protection against oil, water, and solid three-phase pollutants while maintaining the cable's flexibility and providing easy cleaning. It solves the problems of insulation performance degradation and mechanical strength reduction in traditional cables under complex pollution environments, extending the cable's service life and safety stability.
[0023] 2. In this application, the inner sheath and outer sheath provide multiple protections for the cable core, improving the cable's protective performance. The adhesive layers between the inner sheath and the first barrier layer, and between the outer sheath and the second barrier layer, enhance the tightness of the connection between the layers, making the cable structure more stable and preventing relative displacement or separation between the layers, thereby ensuring the stability and reliability of the overall cable performance. Attached Figure Description
[0024] Figure 1 This is a cross-sectional view of the anti-fouling and anti-sticking cable according to an embodiment of this utility model;
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Cable core; 11. Insulation layer; 2. Protective layer; 21. Inner sheath; 22. Outer sheath; 3. Anti-fouling composite layer; 31. First barrier layer; 32. Second barrier layer; 33. Anti-fouling coating; 331. Primer coating; 332. Topcoat coating; 4. Filler layer; 41. First filler layer; 42. Second filler layer; 5. Adhesive layer. Detailed Implementation
[0027] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.
[0028] A type of anti-fouling and anti-sticking cable, such as Figure 1As shown, the anti-fouling and anti-sticking cable includes, from the inside out, a cable core 1, a filling layer 4, a protective layer 2, and an anti-fouling composite layer 3. This spatial layered layout provides progressive protection through mechanical strength, chemical barrier, and surface self-cleaning function. One or more cable cores 1 can be provided; in this embodiment, five cable cores 1 are provided. Each cable core 1 is covered with an insulation layer 11 to achieve independent isolation between different cable cores 1, preventing interference. The cable core 1, as the core part of the cable for transmitting power or signals, consists of multiple conductive metal wires, typically made of copper or aluminum. In this embodiment, the cable core 1 uses copper wire, composed of multiple strands, which provides better conductivity and flexibility. The insulation layer 11 is made of styrene-based thermoplastic elastomer, offering better heat resistance.
[0029] The filling layer 4 includes a first filling layer 41 and a second filling layer 42. The first filling layer 41 is filled between the cable core 1 and the protective layer 2. The first filling layer 41 is a granular filling layer, and the granules can be materials such as vermiculite granules. Vermiculite has good fire-retardant, heat-insulating, and buffering properties, protecting the cable core 1 from external impacts and temperature changes. The second filling layer 42 is filled between the protective layer 2 and the anti-fouling composite layer 3. The second filling layer 42 is filled with water-blocking yarn. The water-blocking yarn can absorb and prevent moisture intrusion, preventing the cable from becoming damp and ensuring the cable's electrical performance.
[0030] like Figure 1 As shown, the protective layer 2 includes an inner sheath 21 and an outer sheath 22. The outer sheath 22 covers the outside of the inner sheath 21. The inner sheath 21 is a polyethylene layer, which has good insulation properties. The outer sheath 22 is an aramid fiber reinforced silicone rubber layer. Aramid fibers are characterized by high strength and high modulus, while silicone rubber has good flexibility, resistance to high and low temperatures, and anti-aging properties. The combination of these two materials ensures that the outer sheath 22 has sufficient strength to protect the internal structure of the cable while also being able to adapt to different environmental temperature changes.
[0031] like Figure 1 As shown, the antifouling composite layer 3 includes a first barrier layer 31, a second barrier layer 32, and an antifouling coating 33. The first barrier layer 31 is a nitrile rubber layer. Utilizing the excellent oil resistance of nitrile rubber, it can effectively block the intrusion of contaminants such as oil stains. The first barrier layer 31 is extruded onto the outside of the inner protective layer 21.
[0032] The second barrier layer 32 is a polyvinylidene fluoride (PVDF) layer. Utilizing PVDF's excellent chemical stability, weather resistance, and anti-fouling capabilities, it further blocks external pollutants such as salt spray and dust, reducing their damage to the cable. The two layers work synergistically to form a double protective barrier, significantly enhancing the cable's resistance to complex external pollutants such as oil, dust, and salt spray, and better protecting the cable's internal structure. The second barrier layer 32 can be extruded onto the outside of the outer sheath 22.
[0033] An antifouling coating 33 is applied to the outside of the second barrier layer 32, with a thickness of 80-120 μm. In this embodiment, the thickness of the antifouling coating 33 is 100 μm. The antifouling coating 33 includes a base coat 331 and a top coat 332. The base coat 331 is applied to the outside of the second barrier layer 32 and is a fluorocarbon resin coating. Utilizing the excellent weather resistance, corrosion resistance, and low surface energy of fluorocarbon resin, it can provide a good adhesion base and underlying protection for the top coat 332. The top coat 332 is applied to the outside of the base coat 331 and is an organosilicon-based polyurethane coating. Utilizing the good flexibility, wear resistance, and antifouling properties of organosilicon-based polyurethane, its smooth surface can effectively reduce the adhesion of pollutants. The thickness ratio of the base coating 331 to the top coating 332 is controlled at (1 - 1.2): (0.5 - 0.8). In this embodiment, the thickness ratio of the base coating 331 to the top coating 332 is 1.2:0.8. Such a thickness ratio enables the antifouling coating 33 to achieve the best antifouling effect.
[0034] In addition, in order to enhance the bonding force between the layers, adhesive layers are provided between the inner sheath 21 and the first barrier layer 31, and between the outer sheath 22 and the second barrier layer 32. The adhesive layers can be made of materials such as hot melt adhesive to reduce interlayer separation and ensure the stability of the cable structure.
[0035] 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 type of anti-fouling and anti-sticking cable, characterized in that, Including cable core (1), and: A protective layer (2) is wrapped around the outside of the cable core (1); The anti-fouling composite layer (3) includes a first barrier layer (31), a second barrier layer (32), and an anti-fouling coating (33). The first barrier layer (31) covers the outside of the protective layer (2), the second barrier layer (32) covers the outside of the first barrier layer (31), and the anti-fouling coating (33) covers the outside of the second barrier layer (32). The thickness of the anti-fouling coating (33) is 80-120 μm. The filling layer (4) includes a first filling layer (41) and a second filling layer (42). The first filling layer (41) is filled between the cable core (1) and the protective layer (2), and the second filling layer (42) is filled between the protective layer (2) and the anti-fouling composite layer (3).
2. The anti-fouling and anti-sticking cable according to claim 1, characterized in that, The antifouling coating (33) includes a base coat (331) and a top coat (332), and the thickness ratio of the base coat (331) and the top coat (332) is (1-1.2):(0.5-0.8).
3. The anti-fouling and anti-sticking cable according to claim 2, characterized in that, The surface coating (332) is an organosilicon-based polyurethane coating.
4. The anti-fouling and anti-sticking cable according to claim 2, characterized in that, The base coating (331) is a fluorocarbon resin coating.
5. The anti-fouling and anti-sticking cable according to claim 1, characterized in that, The first barrier layer (31) is a nitrile rubber layer, and the second barrier layer (32) is a polyvinylidene fluoride layer.
6. The anti-fouling and anti-sticking cable according to claim 1, characterized in that, The protective layer (2) includes an inner protective layer (21) and an outer protective layer (22). The inner protective layer (21) is disposed between the first filling layer (41) and the first barrier layer (31). The outer protective layer (22) is disposed between the second filling layer (42) and the second barrier layer (32). An adhesive layer (5) is disposed between the inner protective layer (21) and the first barrier layer (31) and between the outer protective layer (22) and the second barrier layer (32).
7. The anti-fouling and anti-sticking cable according to claim 6, characterized in that, The inner protective layer (21) is a polyethylene layer, and the outer protective layer (22) is an aramid fiber reinforced silicone rubber layer.
8. The anti-fouling and anti-sticking cable according to claim 1, characterized in that, The first filling layer (41) is a filling particle layer, and the second filling layer (42) is filled with water-resistant yarn.