Temperature-resistant antibacterial cast polypropylene film and preparation method thereof

By combining a loaded antibacterial composite material with a crystallization control system, the problem of unstable antibacterial effect of polypropylene cast film under high temperature environment is solved, the stable dispersion of antibacterial components and the improvement of heat resistance are achieved, a stable interface structure is formed, and the overall performance of the material is improved.

CN122404848APending Publication Date: 2026-07-17周口鑫塑实业有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
周口鑫塑实业有限责任公司
Filing Date
2026-05-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing polypropylene cast films suffer from problems such as poor dispersibility, antibacterial agent migration, insufficient interfacial bonding, and limited heat resistance in terms of temperature resistance and antibacterial properties. They are difficult to maintain stable antibacterial effects in high-temperature environments, and existing technologies lack synergistic design, resulting in uneven performance and safety hazards.

Method used

By employing a supported antibacterial composite material and a crystallization control system, antibacterial active components are loaded and modified onto a porous carrier. Combined with a β-crystal nucleating agent to regulate the crystal structure, a stable interfacial synergistic structure is formed, which controls the release and dispersion of antibacterial components and improves the antibacterial durability and heat resistance under high temperature conditions.

Benefits of technology

Stable dispersion of antibacterial components in polypropylene matrix was achieved, avoiding migration and precipitation, maintaining long-term antibacterial effect, improving the mechanical properties and dimensional stability of the material, and achieving synergistic optimization of temperature resistance and antibacterial properties.

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Abstract

本发明公开了一种耐温抗菌流延聚丙烯膜及其制备方法,涉及聚丙烯膜制备领域,包括如下组分按重量份计:聚丙烯树脂70~95份;结晶调控体系1~10份;负载型抗菌复合材料1~10份;助剂0.1~5份;所述结晶调控体系包括β晶成核剂或有机‑无机复合成核剂中的一种或组合,用于调控聚丙烯的晶型结构并提高热稳定性;所述负载型抗菌复合材料为将抗菌活性组分负载于多孔载体或经表面包覆改性形成的复合结构,其在聚丙烯基体中形成稳定分散相。有效改善了抗菌组分在聚丙烯基体中的分散状态,避免了传统直接添加方式中易发生的团聚现象,从而提高了薄膜结构的均匀性,并兼顾材料的力学性能与抗菌性能。
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