Anti-aging and anti-ultraviolet power cable

By using modified cerium oxide and multi-layer co-extrusion technology in the cable sheath layer, the problem of cable material aging under ultraviolet light and thermo-oxidative aging was solved, thereby improving the cable's aging resistance and insulation stability.

CN122404870APending Publication Date: 2026-07-17JIANGSU YONGSHENG CABLE TECH CO LTD
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Patent Information

Application Number
CN202610555161.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing cable materials are susceptible to aging due to factors such as heat, light, and oxygen during long-term use, leading to a decline in insulation performance. Furthermore, additives may decompose, volatilize, or migrate during long-term use, losing their intended function.

Method used

Modified cerium oxide is used as the sheathing material. By grafting 4-carboxy-2,2,6,6-tetramethylpiperidine 1-oxy radicals onto the surface of cerium oxide, the organic/inorganic synergistic UV absorption function is achieved. The insulation and sheathing layers are formed through multilayer co-extrusion technology to ensure uniform dispersion of modified cerium oxide.

Benefits of technology

It significantly improves the ultraviolet stability of the cable, prevents the substrate from being aged by ultraviolet rays, prevents the migration of small molecule ultraviolet absorbers, and maintains the stability of the cable's insulation performance.

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Abstract

The application discloses an anti-aging and anti-ultraviolet power cable, which comprises a conductor, an insulation layer and a sheath layer from inside to outside, and the sheath layer comprises the following raw materials in parts by weight: 50-70 parts of PVC resin, 20-35 parts of ethylene-propylene-diene rubber, 10-20 parts of ethylene-vinyl acetate copolymer, 10-15 parts of modified cerium oxide, 20-30 parts of dioctyl phthalate, 4-8 parts of calcium-zinc heat stabilizer, 1.5-2 parts of antioxidant, and 0.5-1 part of calcium stearate; the PVC resin and the ethylene-propylene-diene rubber are used as the base material of the sheath layer, the modified cerium oxide is added to exert the excellent anti-aging protection performance of the material itself, the material is endowed with excellent ultraviolet absorption capacity, and the cable is not easy to be aged by ultraviolet light when used outdoors.
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