Flame-retardant high-performance antibacterial PET composite material and preparation method thereof
By combining modified PPTA fibers with CuS/MgO antibacterial agents, a flame-retardant, high-performance antibacterial PET composite material was prepared, which solved the problems of insufficient mechanical properties, flame retardant properties and antibacterial properties of PET composite materials, and achieved a comprehensive improvement in material performance.
CN121045751APending Publication Date: 2025-12-02HEFEI GENIUS NEW MATERIALS CO LTD
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Patent Information
- Application Number
- CN202410679997.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-12-02
AI Technical Summary
Technical Problem
PET composite materials have shortcomings in terms of mechanical properties, flame retardancy, and antibacterial properties, which limits their application in certain fields.
Method used
By preparing modified PPTA fibers and CuS/MgO antibacterial agents, and combining them with a PET matrix, a flame-retardant high-performance antibacterial PET composite material was prepared using a twin-screw extruder. This improved the compatibility between PPTA fibers and the PET matrix, and the CuS/MgO antibacterial agent was used for sterilization.
Benefits of technology
It significantly improves the mechanical properties, flame retardant properties, and antibacterial properties of PET composite materials, expanding their application areas.
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Abstract
The invention discloses a flame-retardant high-performance antibacterial PET composite material and a preparation method thereof. The flame-retardant high-performance antibacterial PET composite material is prepared from 80-100 parts by mass of PET, 8-12 parts by mass of modified PPTA fibers, 0.2-0.4 part by mass of an antibacterial agent and 0.1-0.5 part by mass of an antioxidant. A novel antibacterial agent is synthesized, Cu < 2 + > and Mg < 2 + > which can continuously release and gather around bacteria penetrate through cell membranes and are combined with functional groups with negative electricity of protein and DNA in cells, protein denaturation and DNA condensation are caused, cell death is caused, and the sterilization effect is achieved. The rare earth Ce < 3 + > acts on the surface of the PPTA fiber, so that more oxygen-containing active groups are attached to the surface of the PPTA fiber, the rare earth Ce < 3 + > serves as an intermediate medium, chemical bond connection between the surface of the PPTA fiber and a PET matrix is promoted, the compatibility of the PPTA fiber and the PET matrix is improved, and the physical performance of the PET composite material is improved. The PPTA fiber has certain flame retardance, and the flame retardance of the PET composite material is also improved when the PPTA fiber is used for modifying the PET.
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