期刊
PROGRESS IN ORGANIC COATINGS
卷 123, 期 -, 页码 254-260出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2018.03.026
关键词
Superhydrophobic; Polybenzoxazine; Self-cleaning; Ice delay
资金
- National Natural Science Foundation of China [21776091, 21776080, 21506062]
- Fundamental Research Funds for the Central Universities [222201717025]
- Program of Leading Talents of Shanghai (2013)
Ice accumulation is a serious problem around the world, especially in cold regions. It is believed that a super hydrophobic surface has the potential to realize ice delay. Herein, we report an approach to fabricate super hydrophobic films combined with pendent aliphatic chain-substituted polybenzoxazine and silica nanoparticles (SiO2 NPs) through spin coating and thermal curing. As a result, a superhydrophobic polybenzoxazine/SiO2 film with a static water contact angle of 167 2 and a water sliding angle of 5 was developed, which exhibits self-cleaning properties. The polybenzoxazine/SiO2 film also exhibits ice delay properties owing to the decrease in the liquid-solid contact area and heat loss caused by air pockets under the micro-nano structure of the super hydrophobic film. Furthermore, the superhydrophobic polybenzoxazine/SiO2 film retains its super hydrophobicity after heat treatment for 1 h within a wide temperature range. Moreover, the as-prepared superhydrophobic films are also stable over a wide pH range, from 1 to 14, or after UV exposure for 10 h.
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