长效耐光老化超高分子量聚乙烯纤维制备方法及纤维
By grafting short side chains of light stabilizers onto the amorphous region of UHMWPE resin, the problem of photo-oxidative aging of UHMWPE fibers during long-term service was solved, achieving a synergistic improvement in the fiber's long-term resistance to photo-aging and high strength performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANTONG NTEC MONOFILAMENT TECH CO LTD
- Filing Date
- 2026-03-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing UHMWPE fibers are susceptible to photo-oxidative aging during long-term service due to ultraviolet radiation and thermo-oxidative environments, leading to molecular chain breakage and amorphous region deterioration. Current technologies cannot achieve long-term stable resistance to photo-aging without sacrificing the fiber's high strength.
By grafting short side chains of light stabilizers onto the amorphous region of UHMWPE resin, a modified resin was prepared. This modified resin was then mixed with UHMWPE resin and an antioxidant to form gel fibers. After extraction, stretching, and heat treatment, the light stabilizers were ensured to be positioned in the fibers, avoiding migration loss and affecting the spinning and stretching process.
It significantly improves the fiber's resistance to photoaging while maintaining good mechanical properties. The fiber retains a high strength under long-term light exposure, and its mechanical properties and aging resistance are synergistically improved.
Smart Images
Figure CN121874959B_ABST