Antibacterial nylon fabric and preparation method thereof

By modifying nano-zinc oxide with polydopamine coating and silane coupling agent grafting, and combining it with silver-loaded zirconium phosphate, a multi-level interface enhancement system was constructed. This solved the problem of the decline in antibacterial performance of antibacterial nylon fabric after washing, and achieved efficient and long-lasting antibacterial effect and excellent resistance to damp heat.

CN120866965APending Publication Date: 2025-10-31SHANGHAI ERPU TECH CO LTD
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Patent Information

Application Number
CN202510974493.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-15
Publication Date
2025-10-31

AI Technical Summary

Technical Problem

The antibacterial properties of existing antibacterial nylon fabrics decrease significantly after multiple washes, mainly because the antibacterial agent is not firmly bonded to the nylon fibers and is easily detached.

Method used

A modification strategy involving polydopamine coating and silane coupling agent grafting was adopted to modify nano-zinc oxide, which was then combined with silver-loaded zirconium phosphate to construct a multi-level interface enhancement system of "PDA anchoring + silane bridging". The bonding force between nano-zinc oxide and nylon substrate was enhanced through π-π stacking and hydrogen bonding. The silane coupling agent formed covalent bonds with the nylon molecular chain, forming a ZnO/ZrP-Ag+ biphase antibacterial system, which enabled the controlled release of antibacterial agent.

Benefits of technology

It significantly improves the antibacterial durability and interfacial bonding of antibacterial nylon fabric, maintaining high antibacterial efficiency even after multiple washes, and enhances the material's resistance to humid heat aging and mechanical properties.

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Abstract

The invention relates to the technical field of textile fabrics, in particular to an antibacterial nylon fabric and a preparation method thereof. The antibacterial nylon fabric is prepared from the following materials in parts by weight: 65 to 75 parts of nylon 66, 8 to 10 parts of modified nano zinc oxide, 2 to 3 parts of silver-loaded zirconium phosphate, 3 to 5 parts of compatilizer, 0.2 to 0.5 part of antioxidant and 0.5 to 1 part of lubricant. Wherein the modified nano-zinc oxide is obtained by firstly coating nano-zinc oxide with polydopamine and then grafting the coated nano-zinc oxide with a silane coupling agent. According to the antibacterial nylon fabric and the preparation method thereof, the durability of the antibacterial performance of the antibacterial nylon fabric is improved, and the effective antibacterial capacity is still kept after the antibacterial nylon fabric is washed for multiple times.
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