An antibacterial composite fiber and its preparation method

By utilizing high shear rates and rapid curing processes on conventional spinning equipment, the antibacterial functional components were self-enriched and locked onto the fiber surface, solving the problem of directional enrichment and anchoring of functional components in existing technologies, and improving the performance and functional durability of the fiber.

CN121228392BActive Publication Date: 2026-05-26SHENZHEN NAERSI FASHION CO LTD
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Patent Information

Application Number
CN202511624208.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-11-07
Publication Date
2026-05-26
Estimated Expiration
2045-11-07

AI Technical Summary

Technical Problem

Existing technologies struggle to achieve directional enrichment, in-situ anchoring, and maintenance of matrix mechanical properties in conventional spinning components, thus limiting the improvement of fiber performance.

Method used

By melting and mixing the matrix polymer with the antibacterial functional components, and utilizing the mutual solubility under high shear rate and rapid curing treatment, the functional components are self-enriched and locked on the fiber surface, avoiding dependence on dedicated hardware.

Benefits of technology

The gradient distribution and strong binding force of functional components were achieved on conventional spinning equipment, maintaining the core mechanical properties of the fiber and improving the durability and efficiency of the functional components.

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Abstract

This invention relates to the field of composite fiber preparation technology, and discloses an antibacterial composite fiber and its preparation method, comprising: melting and mixing an antibacterial functional component containing matrix affinity segments and surface migration segments with a matrix polymer component; maintaining their miscibility using high shear transport; triggering phase separation of the antibacterial functional component and its migration to the surface of the fiber nascent body during extrusion to release shear force; and subsequently applying a rapid curing treatment to lock the antibacterial functional component in the surface layer. This invention utilizes the physicochemical properties between components and the control of process timing to achieve active self-assembly of functional components in fiber forming. This method can prepare composite fibers on conventional spinning equipment, achieving targeted enrichment and firm anchoring of functional components to the surface while maintaining the core mechanical properties of the matrix.
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