Abstract
Coatings with anti-icing performance possess hydrophobicity and low ice adhesion strength, which delay ice formation and make ice removal easier. In this paper, the anti-icing performance of nano/microsilica particle-filled amino-terminated PDMS (A-PDMS)-modified epoxy coatings was investigated. In the process, the influence of the addition of A-PDMS on the hydrophobicity and ice adhesion strength was investigated. Furthermore, the influences of various weight ratios of nanosilica/microsilica (Rn/m) on the hydrophobicity and ice adhesion strength of the coating were investigated. Hydrophobicity was evaluated by contact angle (CA) and contact angle hysteresis (CAH) tests. Ice adhesion strength was measured by a centrifugal adhesion test. The addition of A-PDMS markedly increased hydrophobicity and decreased ice adhesion. The size combination of particles obviously affects hydrophobicity but has little effect on ice adhesion. Finally, X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) were used to reveal the anti-icing mechanism of the coatings.
Highlights
Ice accumulation causes harm and economic problems in various applications, such as electric power, ships and aircraft
Fan [9] prepared a superhydrophobic coating by spraying carbon nanotubes and epoxy
amino-terminated PDMS (A-PDMS) exceeded 15 phr, the contact angle (CA) was approximately 106◦ and remained stable. This value is similar to that obtained with modified epoxy in other studies [8]
Summary
Ice accumulation causes harm and economic problems in various applications, such as electric power, ships and aircraft. Anti-icing coatings have attracted much interest from many researchers [1,2,3,4]. The anti-icing performance of coatings can lower the ice adhesion strength and delay freezing. The former makes ice removal easy, while the latter delays ice formation and reduces ice accumulation. Many researchers have fabricated textured coatings with excellent hydrophobicity based on epoxy [6,7,8]. Fan [9] prepared a superhydrophobic coating by spraying carbon nanotubes and epoxy. It showed an excellent anti-icing ability at −10 ◦ C. Penga [10] created a SiO2 /epoxy/PVDF coating with anti-icing properties
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