A negative oxygen ion fiber, its preparation method and application

By blending and melt-spinning PET chips with nano-tourmaline, rare earth hexagonal stone and ZnO-TiO2 composite additives, combined with multi-stage drawing and irregular microchannel spinnerets, a high-efficiency negative oxygen ion fiber was prepared, which solved the problems of insufficient functional durability and processing applicability in the existing technology, and achieved high negative oxygen ion release and antibacterial effect.

CN122128833APending Publication Date: 2026-06-02SUZHOU STELLAN NEW MATERIALS TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUZHOU STELLAN NEW MATERIALS TECHNOLOGY CO LTD
Filing Date
2026-04-17
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing negative ion fibers have significant shortcomings in terms of functional durability, processing applicability, and negative ion release performance, resulting in poor washability, low production efficiency, and functionality that is merely a concept.

Method used

Nano-tourmaline, rare earth hexagonal stone and ZnO-TiO2 composite are used as functional additives. After being blended with PET chips, they are melt-spun and prepared into negative oxygen ion fibers through multi-stage drawing and irregular microchannel spinnerets. The surface treatment of silane coupling agent and titanate is combined to improve interfacial compatibility and ensure high negative oxygen ion release and antibacterial properties.

Benefits of technology

It achieves high negative oxygen ion release, excellent heat resistance and dispersibility, low breakage rate, 40% increase in spinning efficiency, stable negative oxygen ion release concentration of over 1500 ions/cm³, antibacterial rate ≥99.9%, and meets the requirements for long-lasting high conductivity.

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Abstract

This application provides a negative ion fiber, its preparation method, and its application, belonging to the field of functional materials technology. The negative ion fiber is obtained by melt spinning a functional masterbatch containing functional additives with PET chips. The functional additives include 20-60 wt% nano-tourmaline, 20-40 wt% rare earth hexagonalite, and 10-60 wt% ZnO-TiO2 composite. The negative ion fiber of this application, especially the short negative ion fiber, has a high negative ion release rate and antibacterial properties, with a negative ion release rate of 1800 ions / cm³. 3 The above results show an inhibition rate of over 99% against Staphylococcus aureus.
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