自愈
聚氨酯
材料科学
热固性聚合物
聚二甲基硅氧烷
涂层
图层(电子)
复合材料
自愈材料
铸造
制作
化学工程
医学
工程类
病理
替代医学
作者
Muhammad Naveed,Muhammad Rabnawaz,Ajmir Khan,Mohammad O. Tuhin
出处
期刊:Polymers
[MDPI AG]
日期:2019-11-09
卷期号:11 (11): 1849-1849
被引量:28
标识
DOI:10.3390/polym11111849
摘要
There is an urgent need for coatings that exhibit both self-healing as well as self-cleaning properties as they can be used for a wide range of applications. Herein we report a novel approach toward fabricating polyurethane thermosets possessing both self-cleaning and self-healing properties. The desired coating was achieved via casting a bottom layer of self-healable polyurethanes comprised of reversible phenolic urethane bonds followed by a subsequent dip-coating of the prepared layer in a solution of bis(3-aminopropyl)-terminated polydimethylsiloxane (PDMS-NH2). The PDMS was used to impart self-cleaning properties to the coating. While the self-healing behavior of the bottom polyurethane layer is achieved through phenolic urethane chemistry, via the exchange of phenolic urethane moieties. The prepared coatings were tested for their optical, mechanical, self-healing, and self-cleaning properties using a variety of characterization methods, which confirmed the successful fabrication of novel self-cleaning and self-healing clear urethane coatings.
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