CN-122025247-A - High-low temperature resistant and ultraviolet resistant special cable

Abstract

The invention discloses a high-low temperature resistant and ultraviolet resistant special cable, and relates to the field of special cables. According to the invention, the temperature-sensitive buffer silicone rubber is arranged as an integrated void-free structure, the low shrinkage rate of the temperature-sensitive buffer silicone rubber can effectively offset thermal expansion and contraction caused by high and low temperature alternation, so that the cable core displacement and the protection layer gap are avoided, the cable structure stability is improved, the benzotriazole ultraviolet absorbent flame-retardant polyolefin tape of the inner ultraviolet-resistant protection layer can reflect ultraviolet rays, a double-layer gradient ultraviolet-resistant protection system is constructed, ultraviolet free radicals are quenched, the aerogel felt has the heat insulation and buffering effects, the influence of external temperature impact on the inner and outer ultraviolet-resistant protection layers is reduced, the damage to the inner structure when the composite sheath is extruded by external force is relieved, and the impact resistance of the cable is improved.

Inventors

• Zuo Hongping
• LU XIAOFENG
• WANG HUIYU
• CHEN RUI

Assignees

• 通乐线缆(江苏)有限公司

Dates

Publication Date

20260512

Application Date

20260130

Claims (4)

1. 1. The special cable resistant to high and low temperature and resistant to ultraviolet rays comprises a cable core (1) and is characterized in that a silver-plated oxygen-free copper wire (2) is arranged on the outer wall of the cable core (1), a polyimide film wrapping bag (3) is arranged on the outer wall of the silver-plated oxygen-free copper wire (2), a fluororubber extrusion bag (4) is arranged on the outer wall of the polyimide film wrapping bag (3), and temperature-sensitive buffer silicone rubber (5) is arranged on the outer wall of the fluororubber extrusion bag (4); The anti-flaming device is characterized in that a nano titanium dioxide ceramic silicon rubber belt (6) is arranged on the outer wall of the temperature-sensitive buffering silicon rubber (5), an aerogel felt (7) is arranged on the outer wall of the nano titanium dioxide ceramic silicon rubber belt (6), and a benzotriazole ultraviolet absorber flame-retardant polyolefin belt (8) is arranged on the outer wall of the aerogel felt (7).
2. 2. The special cable with high and low temperature resistance and ultraviolet resistance according to claim 1, wherein the silver-plated oxygen-free copper wires (2) are arranged in an annular array on the outer wall of the wire core (1), and the silver-plated oxygen-free copper wires (2) are arranged in a spiral shape.
3. 3. The special cable resistant to high and low temperatures and resistant to ultraviolet rays, which is characterized in that the outer wall of the temperature-sensitive buffer silicone rubber (5) is tightly attached to the inner wall of the nano titanium dioxide ceramic silicone rubber belt (6), and the length of the outer wall of the temperature-sensitive buffer silicone rubber (5) is the same as that of the outer wall of the nano titanium dioxide ceramic silicone rubber belt (6).
4. 4. The special cable with high and low temperature resistance and ultraviolet resistance according to claim 1, wherein the outer wall of the aerogel felt (7) is tightly attached to the inner wall of the benzotriazole ultraviolet absorber flame retardant polyolefin tape (8), and the length of the outer wall of the aerogel felt (7) is the same as that of the outer wall of the benzotriazole ultraviolet absorber flame retardant polyolefin tape (8).

Description

High-low temperature resistant and ultraviolet resistant special cable Technical Field The invention relates to the field of special cables, in particular to a high-low temperature resistant and ultraviolet resistant special cable. Background In the application of the special cable in the outdoor and special industrial environments, the core performance requirements of high and low temperature resistance and ultraviolet resistance are simultaneously met, and the special cable is suitable for the severe environments of alternating high and low temperatures and strong ultraviolet radiation such as aerospace, outdoor rail transit, petrochemical outdoor stations, polar exploration and the like, so that the special cable with high and low temperature resistance and ultraviolet resistance is needed. When the existing special cable is operated, a special protective layer is not designed aiming at ultraviolet radiation, the sheath material of the special cable is easy to age and crack under strong ultraviolet rays, so that the internal structure is exposed and the high-low temperature protective performance is lost, and in addition, the ultraviolet-resistant cable realizes the ultraviolet-resistant effect by modifying the sheath material, but the high-low temperature resistant interval of the material is narrower, embrittlement, softening deformation easily occurs in a high-temperature environment, and the problem that the special cable cannot adapt to an extreme temperature field scene is urgently needed. Disclosure of Invention Based on the above, the invention aims to provide the high-low temperature resistant and ultraviolet resistant special cable, so as to solve the problems that when the existing high-low temperature resistant and ultraviolet resistant special cable is used, a special protective layer is not designed for ultraviolet radiation, a sheath material of the special cable is easy to age and crack under strong ultraviolet rays, so that an internal structure is exposed, the high-low temperature protective performance is lost, and the ultraviolet resistant effect of the ultraviolet resistant cable is realized by modifying the sheath material, but the high-low temperature resistant interval of the material is narrower, embrittlement, softening deformation easily occurs in a high-temperature environment, and the special cable cannot adapt to an extreme temperature range scene. The special cable comprises a wire core, wherein a silver-plated oxygen-free copper wire is arranged on the outer wall of the wire core, a polyimide film wrapping bag is arranged on the outer wall of the silver-plated oxygen-free copper wire, a fluororubber extrusion bag is arranged on the outer wall of the polyimide film wrapping bag, and temperature-sensitive buffer silicone rubber is arranged on the outer wall of the fluororubber extrusion bag. The outer wall of the temperature-sensitive buffering silicone rubber is provided with a nano titanium dioxide ceramic silicone rubber belt, the outer wall of the nano titanium dioxide ceramic silicone rubber belt is provided with an aerogel felt, and the outer wall of the aerogel felt is provided with a benzotriazole ultraviolet absorber flame-retardant polyolefin belt. Preferably, the silver-plated oxygen-free copper wire is arranged in an annular array on the outer wall of the wire core, and the silver-plated oxygen-free copper wire is spirally arranged. Preferably, the outer wall of the temperature-sensitive buffer silicone rubber is tightly attached to the inner wall of the nano titanium dioxide ceramic silicone rubber belt, and the length of the outer wall of the temperature-sensitive buffer silicone rubber is the same as that of the outer wall of the nano titanium dioxide ceramic silicone rubber belt. Preferably, the outer wall of the aerogel blanket is closely attached to the inner wall of the benzotriazole ultraviolet absorber flame retardant polyolefin tape, and the length of the outer wall of the aerogel blanket is the same as that of the outer wall of the benzotriazole ultraviolet absorber flame retardant polyolefin tape. Compared with the prior art, the invention has the beneficial effects that: 1. According to the invention, the temperature-sensitive buffer silicone rubber is arranged as an integrated void-free structure, the low shrinkage rate of the temperature-sensitive buffer silicone rubber can effectively offset thermal expansion and contraction caused by high and low temperature alternation, so that the cable core displacement and the protection layer gap are avoided, the cable structure stability is improved, the nano titanium dioxide ceramic silicone rubber belt of the inner anti-ultraviolet protection layer can reflect ultraviolet rays, the benzotriazole ultraviolet absorbent flame-retardant polyolefin belt of the outer anti-ultraviolet protection layer can absorb ultraviolet rays, a double-layer gradient anti-ultraviolet protection system is constructed, ultravio