This study aims to develop Ultraviolet-cured (UV-cured) antimicrobial coatings by dispersing epoxy resin F51–quaternary ammonium salt (QAS) as antimicrobial agents in UV-cured emulsions. The molecular structures of these F51–QAS coatings were analyzed using infrared spectroscopy. Thermogravimetric analysis was performed to evaluate the thermal stability of the antimicrobial coatings. Contact angle testing was conducted to investigate the hygroscopic wettability of the coatings. Mechanical properties such as pencil hardness, adhesion strength, flexibility and impact resistance were evaluated. Antimicrobial rate experiments were conducted to examine the antimicrobial properties of the coatings. The antimicrobial properties were examined through rate experiments against Escherichia coli and Staphylococcus aureus. The results showed that when the F51–QAS content was at 2.7%, the UV-cured antimicrobial coatings exhibited excellent overall performance with a 100% antimicrobial rate.

中文翻译：

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环氧树脂季铵盐紫外光固化抗菌涂料的研究

本研究旨在通过将环氧树脂F51-季铵盐（QAS）作为抗菌剂分散在紫外线固化乳液中来开发紫外线固化（UV-cured）抗菌涂料。使用红外光谱分析了这些 F51-QAS 涂层的分子结构。进行热重分析以评估抗菌涂层的热稳定性。进行接触角测试以研究涂层的吸湿润湿性。评估了铅笔硬度、粘合强度、柔韧性和抗冲击性等机械性能。进行抗菌率实验来检查涂层的抗菌性能。通过对大肠杆菌和金黄色葡萄球菌的速率实验检验了其抗菌性能。结果表明，当F51-QAS含量为2.7%时，紫外光固化抗菌涂料表现出优异的综合性能，抗菌率为100%。