一种高压交联聚乙烯电缆缓冲层及制备方法和应用
By employing a plain weave structure of conductive thermoplastic polyurethane elastomer fibers and aramid/polyester blended yarn in the buffer layer of high-voltage cross-linked polyethylene cables, the problems of insufficient conductivity, water resistance, and mechanical strength of the buffer layer are solved, thereby achieving long-term stable operation and reduced failure rate of the cable.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
- Filing Date
- 2024-09-10
- Publication Date
- 2026-07-17
AI Technical Summary
The existing high-voltage cross-linked polyethylene cable buffer layer has low volume resistivity, water-blocking performance and ablation resistance, which makes it prone to structural loosening and detachment, resulting in a shortened service life of the cable and instability of the power system.
A plain weave structure is formed by using conductive thermoplastic polyurethane elastomer fibers and blended yarns. The conductive thermoplastic polyurethane elastomer fibers include thermoplastic polyurethane elastomer fiber cores doped with superconducting carbon black and a conductive coating layer. The blended yarns are blends of high-performance fibers such as aramid and polyester. The conductive layer is prepared by wet spinning, impregnation, and reducing agent treatment.
It improves the conductivity, water resistance, and mechanical strength of the buffer layer, reduces the probability of ablation failure, extends the service life of the cable, and enhances the long-term operational stability of the power system.
Smart Images
Figure CN118919145B_ABST