In this paper, the superhydrophobic
poly(phenylene sulfide) (PPS)/polytetrafluoroethylene
(PTFE) composite coating was fabricated and applied to evaluate the
antiscaling performance. Compared with the commercial hydrophobic
epoxy–silicone resin coating, the superhydrophobic PPS/PTFE
composite coating exhibited unique antiscaling performance. The deposition
rate of CaCO3 scaling on the superhydrophobic PPS/PTFE
coating was only 38.6% of that on the epoxy–silicone resin
coating. The surface morphology, size, and crystal type of the scaling
were analyzed. The results indicated that the formation and growth
of CaCO3 scaling were significantly influenced by the cooperative
effect of topography and low surface energy of the superhydrophobic
PPS/PTFE composite coating. There were few nucleation sites at the
surface of superhydrophobic coating owing to the relatively low surface
energy and absorbed bubbles. Together with the space constraint of
the topography, the nucleation and growth of CaCO3 scaling
were inhibited on the surface of superhydrophobic PPS/PTFE coating.
Foam-based material with unique wettability is one of the promising materials for developing oil-spill cleanup, benefiting from its intrinsic interconnected three-dimensional skeleton, oil permeation and water repellency. However, obtaining a foam-based material capable of in situ separating oil spills, especially with superhydrophobic durability and simple recycling mode, remains challenging. Herein, we reported a one-step spraying approach to fabricate fluorinated ethylene propylene (FEP)/ polyvinylidene fluoride (PVDF)/ ultrafine polyurethane (UPU)/ hydrophobic nanosilica (HSiO 2)-decorated nickel foam coating with a static water contact angle (WCA) of 157±1.5˚ and a static oil contact angle (OCA) of 0˚. Owing to the foldability of the coated nickel foam, we established a continuous in-situ collection apparatus by external pumping on 3D nickel foam box. UPU addition endowed the resultant 3D nickel foam with excellent interfacial adhesion. After 7 days of continuous oil-water experiment that simulated cleanup oil-spill, the static WCA of the 3D nickel foam with 10 wt% UPU was still above 130˚. Notablely, after heat treatment at 240 ℃, the fabricated 3D nickel foam coating could be refreshed from the damaged surface to superhydrophobic.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.