An antibacterial and antiviral PEBA 3D printing composite filament and its preparation method

CN122302572APending Publication Date: 2026-06-30GUANGDONG SANLV TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG SANLV TECH CO LTD
Filing Date
2026-04-28
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing PEBA 3D printing filaments suffer from high material costs, strong water absorption, poor wear resistance, and limited research on functionalized filaments. Furthermore, the market for antibacterial and antiviral agents is limited, with issues such as the high price of Ag+ ions, the high addition amount required for Zn2+ ions despite their good safety profile, and the dependence of nano-TiO2 on ultraviolet irradiation.

Method used

Using polyquaternary ammonium salt/Zn2+/modified TiO2 composite additives, acrylate-long-chain quaternary ammonium salt supramolecular assemblies are cross-linked and copolymerized with zinc acrylate, and nitrogen-doped gas-phase TiO2 is used for loading to prepare antibacterial and antiviral PEBA 3D printing composite filaments. TPU, TPEE and compatibilizers are combined to adjust the flowability and hardness.

Benefits of technology

The improved thermal stability of polyquaternium salts endows PEBA filaments with broad-spectrum and long-lasting antibacterial and antiviral properties, expanding their application range, improving print quality, reducing costs, and maintaining excellent mechanical properties and abrasion resistance.

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Abstract

This invention provides an antibacterial and antiviral PEBA 3D printing composite filament, the components of which include a PEBA matrix, a blended polymer, an interface compatibilizer, an antibacterial and antiviral agent, a nucleating agent, a lubricant, an antioxidant, and a colorant. A supramolecular polyquaternary ammonium salt / Zn is prepared through crosslinking copolymerization and a modified TiO2 loading process. 2+ A modified TiO2 composite antibacterial and antiviral additive was applied to the functional modification of PEBA filament, giving the 3D printing material broad-spectrum, long-lasting antibacterial, highly effective antiviral, and visible-light catalytic antibacterial and antiviral functions. This product can be used in additive manufacturing of antibacterial and antiviral products in fields such as textiles and footwear, sports protective equipment, wearable devices, precision electronic components, automotive and industrial parts, and medical devices, with promising market prospects.
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