一种阻水电缆护套料及其制备方法
By functionalizing the TPU/EVA blend with maleic anhydride and modifying it with silane, combined with stepwise processes and crosslinking technology, the distribution problem of water-blocking agents and flame retardants was solved, resulting in a cable sheath material with high water resistance, high flame retardancy, high strength, and high toughness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU CARRETT TECH CO LTD
- Filing Date
- 2025-12-12
- Publication Date
- 2026-07-17
AI Technical Summary
Existing TPU/EVA blend systems exhibit a sharp decline in water-blocking performance and rapid decrease in mechanical strength after long-term use. Furthermore, it is difficult to achieve uniform distribution of water-blocking agents and flame retardants in traditional processes, resulting in shortcomings in material performance.
Functionalized nanocomposite water-blocking agents and pre-dispersed flame-retardant masterbatches were prepared by functionalizing TPU with maleic anhydride and modifying EVA with silane, and by combining a stepwise process. Multi-level cross-linking networks were formed through dynamic cross-linking and irradiation cross-linking, so as to achieve precise anchoring of water-blocking agents at the interface and uniform distribution of flame retardants in the matrix.
It significantly improves the water resistance, flame retardancy and mechanical properties of the material, ensuring long-term stability in complex environments and meeting the performance requirements of high-end applications.