Preparation of Self-Healing Antifogging Hard Coatings Using Carboxy-Functionalized Polysilsesquioxanes and Oligo(ethylene glycol)s.

IF 4.9 3区工程技术 Q1 POLYMER SCIENCE

Polymers Pub Date : 2025-09-15 DOI:10.3390/polym17182491

Seiya Morinaga, Rione Baba, Chino Fujii, Yoshiro Kaneko

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引用次数: 0

Abstract

Water-resistant antifogging hard coatings possessing self-healing properties were successfully prepared by applying N,N-dimethylformamide solutions containing the mixtures of carboxy-functionalized polysilsesquioxane (PSQ-2C) with oligo(ethylene glycol)s (OEGs; n = 2-6 and n = 2-4) at the feed functional group ratios (carboxy groups in PSQ-2C/hydroxy groups in OEG) of 10:1 and 4:1, respectively, onto oxygen plasma-treated glass substrates, followed by heat drying, water immersion, and room-temperature drying. The formation of ester bonds in the resulting coatings, indicating the presence of a cross-linked structure, was confirmed via Fourier-transform infrared/attenuated total reflectance spectroscopy. Notably, the coating prepared using PSQ-2C and tetraethylene glycol (OEG; n = 4) at a feed functional group ratio of 10:1 demonstrated no peeling or dissolution even after water immersion for 1 h, and its surface hardness, which was evaluated via the pencil scratch test, was 4H. Additionally, when exposed to water vapor generated from warm water at 40 °C at a distance of 2 cm, the coating maintained transparency for up to 85 s, confirming its excellent antifogging performance. Finally, the coating exhibited self-healing properties, as evidenced by the disappearance of scratches induced by a 5H pencil when the coating was left standing at 25 °C and 30% relative humidity for 5 min.

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羧基功能化聚硅氧烷和低聚乙二醇制备自愈防雾硬涂料。

采用含有羧基功能化聚硅氧烷（PSQ-2C）和低聚乙二醇（OEGs）混合物的N，N-二甲基甲酰胺溶液成功制备了具有自愈性能的防水防雾硬涂层；n = 2-6和n = 2-4)，分别以10:1和4:1的进料官能团比（PSQ-2C中的羧基/ OEG中的羟基）放置在氧等离子体处理的玻璃基板上，然后进行热干燥、水浸泡和室温干燥。通过傅里叶变换红外/衰减全反射光谱证实了涂层中酯键的形成，表明交联结构的存在。值得注意的是，采用PSQ-2C和四乙二醇（OEG; n = 4）在料浆官能基团比为10:1的情况下制备的涂层，即使在水中浸泡1 h也没有脱皮和溶解，通过铅笔划痕测试评估其表面硬度为4H。此外，当暴露在40°C温水产生的水蒸气中，距离为2 cm时，涂层保持透明长达85 s，证实了其优异的防雾性能。最后，涂层表现出自修复性能，当涂层在25°C和30%相对湿度下放置5分钟时，5H铅笔引起的划痕消失。

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来源期刊

Polymers POLYMER SCIENCE-

CiteScore

8.00

自引率

16.00%

发文量

4697

审稿时长

1.3 months

期刊介绍： Polymers (ISSN 2073-4360) is an international, open access journal of polymer science. It publishes research papers, short communications and review papers. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Polymers provides an interdisciplinary forum for publishing papers which advance the fields of (i) polymerization methods, (ii) theory, simulation, and modeling, (iii) understanding of new physical phenomena, (iv) advances in characterization techniques, and (v) harnessing of self-assembly and biological strategies for producing complex multifunctional structures.