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	Influence of engineering environment on wetting properties and long-term stability of a superhydrophobic polymer coating
	Luo, Zhuangzhu; Wang, Yunjiao; Yang, Qin; Luo, Yimin; Tan, Sheng; Chen, Tian; Xie, Zhiwen
	2014-04-22
摘要	Surface behaviors of superhydrophobic polymer coating applied in severe engineering environment are firstly systematically investigated. The PTFE/PPS (Polytetrafluoroethylene/Polyphenylene sulfide) coating still possess good superhydrophobicity after natural ice and snow covering for 10 day due to its micrometer-nanometer-scale binary structure (MNBS) with long-term stability. Scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and water contact angle (WCA) are used to characterize the morphology, chemical components and wetting properties of the coating, respectively. Surprisingly, the PTFE nano-fibers on most micro-scale papillae of the original coating were "chemical-etched" and then "secondary-constructed" to form nano-spheres/papules by H2SO4 under "accelerated simulated acid rain" condition (pH = 0.3). It is firstly found that chemical-etching by simulated acid rain only result in the "secondary-construction" of MNBS structure. However, the laboratory weathering tests indicated that light-etching by the light with specified wavelength (UV, about 300-400 nm) can lead to both the "secondary-construction" of MNBS structure and the change of surface chemical composition/groups on the superhydrophobic coatings. This thesis clarifies the long-term stability and surface behaviors of the superhydrophobic polymer coating under severe engineering condition, and will provide significant theoretical guidance for superhydrophobic polymer coating as anti-ice/frost engineering material.
关键词	Superhydrophobic coating Surface behaviors Ligth-etching Secondary-construction Anti-ice/snow
DOI	10.1007/s10965-014-0447-y
发表期刊	JOURNAL OF POLYMER RESEARCH
ISSN	1022-9760
卷号	21期号:5页码:9
通讯作者	Luo, ZZ (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Multiscale Mfg Technol, Fangzheng Rd 266th, Chongqing 400714, Peoples R China.
收录类别	SCI
WOS记录号	WOS:000334935900001
语种	英语