Artificial Icing Test Ice Phobic Coatings on UH-1H Helicopter Rotor Blades

Tulloch, John S; Smith, Raymond B; Doten, Frederick S; Bishop, John A.

doi:10.21236/ada059875

Cited by 1 publication

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“…After that, silanes were used to treat non-porous substrates, for example, metal, glass, plastics and ceramics [145]. The United States Army Aviation Engineering Flight Activity evaluated the ice-shedding effect of two commercial available silicone-based polymers (General Electric G697: polydimethylsiloxane (PDMS) compound; Dow Corning E2460-40-1: cationic silicone oil) on the main rotor blades of the UH-1H Helicopter [146]. In 1997, Saito et al dispersed 1µm polytetrafluoroethylene into polyvinylidene fluoride resin using a ball milling for anti-icing applications [147].…”

Section: Chemical Methodsmentioning

confidence: 99%

Development of anti-icing coatings for sports application

Wu¹

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Undesired ice accumulation on outdoor sports facilities leads to severe economic issues and even loss of lives. Great efforts have been made to fabricate ice prevention surfaces or facilities since 1800s. The utilized methods can be categorized into four types: mechanical methods, chemical methods, thermal methods and combined methods (combing two or three former referred methods). Considering the economic impact and additional labour burdens, chemical methods are commonly adopted and widely studied. To avoid numerous environmental effect of drain-off chemicals, icephobic coatings, as effective passive antiicing methods, have attracted much attention in recent decades. However, less attention has been paid on development of the anti-icing coatings for sports facilities and other related applications that requires additional properties including mechanical durability, transparency, easy processability and so on. With expectation to repel incoming water before ice formation, superhydrophobic coatings that exhibit superior water repellency and bouncy effect, have been widely studied since 1997. However, not all superhydrophobic coatings present anti-icing behaviours due to water condensation. This study begins with the investigation of the effect of water condensation on superhydrophobic coatings with different microstructures. To design superhydrophobic coatings with different microstructures, a sol-gel method was employed with adjustment of the weight ratio of nanoparticles with different surface energies. One of the prepared coatings demonstrated robust icephobicity with low ice-adhesion strength of ~ 60 kPa under water condensation conditions; at the same time, it also displayed a low ice-nucleation temperature of ~-26 °C and low icing probability.With a strong demand for aesthetics appearance, transparent anti-icing coatings are needed for various applications. However, the well-studied superhydrophobic coatings are usually translucent or opaque because of the micro-nanostructures which greatly affect light transmittance. The state-of-the-art slippery liquid infused porous surface (SLIPS), which presented extremely low ice adhesion, can achieve a high transparency by choosing the substrate and lubricant liquid with matching refractive indices. However, the mechanical property of both kinds of coatings is weak due to the presence of porous microstructures.

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Section: Chemical Methodsmentioning

confidence: 99%

Development of anti-icing coatings for sports application

Wu¹

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Artificial Icing Test Ice Phobic Coatings on UH-1H Helicopter Rotor Blades

Cited by 1 publication

References 0 publications

Development of anti-icing coatings for sports application

Development of anti-icing coatings for sports application

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