Aging-resistant HDPE power pipe and preparation method thereof
HDPE power pipes, produced through multi-layer co-extrusion and compounded weather-resistant additives, have solved the problems of limited color options, insufficient aging resistance, and brittleness associated with existing polyethylene power pipes, achieving a significant improvement in aging resistance and impact resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGDONG HUSHUNTONG PLASTIC ENG TECH CO LTD
- Filing Date
- 2026-04-21
- Publication Date
- 2026-07-17
AI Technical Summary
Existing polyethylene power pipes rely on carbon black weathering systems, resulting in limited color options, insufficient long-term aging resistance, brittleness, and stress cracking. This makes it difficult to produce vibrant warning colors, and carbon black also increases the rate of thermo-oxidative aging.
HDPE power pipes are manufactured using a multi-layer co-extrusion process. Modified fillers and compounded weather-resistant additives are used in the core and surface layers, respectively. Linear low-density polyethylene and maleic anhydride-grafted POE are introduced into the surface layer. The core and surface layers work together to form a highly efficient aging-resistant system.
It improves the aging resistance and impact resistance of power pipes, maintains good compressive strength, solves the problems of insufficient aging resistance efficiency and limited appearance color of traditional carbon black systems, and enhances the overall performance of power pipes.
Smart Images
Figure CN122401997A_ABST