一种间位芳香族聚酰胺纤维及制备方法和应用
By adding a crosslinking agent to the spinning solution and controlling the spinning process parameters, a gradient structure with micro-crosslinked surface and uncrosslinked core is formed, which solves the problem of difficulty in balancing strength and elongation in dry spinning and improves the overall performance and production efficiency of the fiber.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- YANTAI TAYHO ADVANCED MATERIALS RES INST CO LTD
- Filing Date
- 2026-06-16
- Publication Date
- 2026-07-17
AI Technical Summary
In existing dry spinning technology, it is difficult to achieve both strength and elongation of meta-aramid fibers. Furthermore, continuous production requires high-concentration salt/solvent conditioning solutions, resulting in high environmental costs and low production efficiency.
A crosslinking agent is added to the spinning solution, and a gradient structure with micro-crosslinked surface and uncrosslinked core is formed by controlling the preheating temperature of the spinning solution, the channel temperature, and the partition design. A stretching bath with pure water or dilute solution is used to reduce the use of solvent.
It achieves a balance between high tensile strength and high elongation at break, reduces environmental costs, and improves the overall mechanical properties and production efficiency of the fiber.
Smart Images
Figure CN122406404A_ABST