期刊
CHEMICAL ENGINEERING JOURNAL
卷 404, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2020.126504
关键词
Superhydrophobic coatings; Transparent coatings; Self-healing materials; Self-cleaning; Supramolecular polymers
资金
- National Natural Science Foundation of China [21971083]
- Department of Science and Technology of Jilin Province [20190103019JH]
Transparent self-healing superhydrophobic coatings have been successfully fabricated using a nonfluorinated, transparent, and superhydrophobic material. The coatings show good transparency and superhydrophobicity, enabling their application on various substrates.
Transparent self-healing superhydrophobic coatings have important applications on lenses, solar cells, helmet visors, and windshields a al. However, their applications at the present stage are limited by hazardous fluorinated materials, low transmittance, and heating treatment for healing. In this study, nonfluorinated, transparent, and superhydrophobic coatings with spontaneous self-healing ability are successfully fabricated via spray coating an ethanol solution of polydimethylsiloxane (PDMS)-based supramolecular polymer cross-linked via Ncoordinated boroxines (N-Boroxine-PDMS) and SiO2 nanoparticles. Benefiting from the use of spray-coating technique, the transparent self-healing superhydrophobic coatings can be readily applied to various substrates such as plastic spectacle lens, wood, metal, and paper, greatly expanding the scope of applications. The obtained coatings possess good transparency with a transmittance at 550 nm of 90.1% and excellent superhydrophobicity with a contact angle of 160.9 degrees and a sliding angle of 1 degrees, which can be attributed to the use of N-Boroxine-PDMS that is inherently transparent and hydrophobic. The N-Boroxine-PDMS/SiO2 coatings can withstand water impact, UV irradiation, and heating at elevated temperatures due to the use of N-Boroxine-PDMS. More importantly, the coatings are capable of repetitively and spontaneously healing the chemical damage caused by exposure to hydrogen peroxide or O-2 plasma at room temperature because the reversibility of N-coordinated boroxines allows the oligomers of N-Boroxine-PDMS readily migrate to the damaged surface. Our finds show evidence that the use of properly designed supramolecular polymers as coating materials provides a simple and effective way to simultaneously integrate good transparency, stability, and spontaneous room-temperature self-healing ability in superhydrophobic coatings.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据