Icephobicity: Definition and Measurement Regarding Atmospheric Icing

Brassard, Jean-Denis; Laforte, Caroline; Guerin, Frédéric; Blackburn, Caroline

doi:10.1007/12_2017_36

Cited by 15 publications

(10 citation statements)

References 33 publications

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“…where subscript i denotes ice, and represents the work required to break the bond between the ice and the surface and form two new surfaces. Combining Equations (1) and (2) shows that…”

Section: Theoretical Aspectsmentioning

confidence: 99%

See 1 more Smart Citation

Nanoscale Correlations of Ice Adhesion Strength and Water Contact Angle

Rønneberg

Xiao

et al. 2020

Coatings

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Surfaces with low ice adhesion represent a promising strategy to achieve passive anti-icing performance. However, as a successful and robust low ice adhesion surface must be tested under realistic conditions at low temperatures and for several types of ice, the initial screening of potential low ice adhesion surfaces requires large resources. A theoretical relation between ice adhesion and water wettability in the form of water contact angle exists, but there is disagreement on whether this relation holds for experiments. In this study, we utilised molecular dynamics simulations to examine the fundamental relations between ice adhesion and water contact angle on an ideal graphene surface. The results show a significant correlation according to the theoretic predictions, indicating that the theoretical relation holds for the ice and water when discarding surface material deformations and other experimental factors. The reproduction of the thermodynamic theory at the nanoscale is important due to the gap between experimental observations and theoretical models. The results in this study represent a step forward towards understanding the fundamental mechanisms of water–solid and ice–solid interactions, and the relationship between them.

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“…where subscript i denotes ice, and represents the work required to break the bond between the ice and the surface and form two new surfaces. Combining Equations (1) and (2) shows that…”

Section: Theoretical Aspectsmentioning

confidence: 99%

“…Unwanted icing and ice accretion are potentially hazardous and can impact daily life [1]. Dangerous situations occur for instance within wind energy, aircrafts, power lines, and industries in Arctic environments [2]. Passive anti-icing surfaces where the accreted ice is automatically removed is a possible solution [3].…”

Section: Introductionmentioning

confidence: 99%

Nanoscale Correlations of Ice Adhesion Strength and Water Contact Angle

Rønneberg

Xiao

et al. 2020

Coatings

View full text Add to dashboard Cite

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“…Ice adhesion reduction is an important function of icephobic coatings as ice may form but, upon reaching a critical mass, it should be able to be easily removed from the surface. There are no available standards for this type of test, and many different methods have been developed to assess the ice adhesion reduction in icephobic coatings [12,15,16,27,28]. The centrifuge test uses centripetal forces to shear ice from the test surface.…”

Section: Methodsmentioning

confidence: 99%

Assessment of Icephobic Coatings—How Can We Monitor Performance Durability?

et al. 2021

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Significant progress in the field of icephobic coatings has raised a demand for evaluation criteria to assess and monitor the related icephobic effects and their durability. The initial coating performance in preventing ice formation and reducing ice adhesion needs to be proven over a given period by withstanding technically relevant stressors. In this study, silanized polyurethane (PUR) coatings are assessed in conjunction with a standardized accelerated ultraviolet (UV)-ageing procedure in order to identify potential monitoring tools that are also applicable during in-service inspections. Wettability and roughness parameters are recorded after pre-defined ageing intervals, compared with the ice adhesion strength, and tested using a modified centrifuge. Correlation assessments indicate that the chosen parameters cannot generally be used for the monitoring of icephobic effects for the selected material class. It is more likely that specific coating parameter sets need to be defined for in-service monitoring, as an important step towards the integration of icephobic coatings into technical applications.

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“…The coatings were selected primarily for their facility of application, using a spray gun, over medium to large scale substrates. All the coatings are recognized to reduce the ice adhesion due to previous studies conducted at The Anti-icing Materials International Laboratory (AMIL) [3,[10][11][12][13][14].…”

Section: Coatings Characteristicsmentioning

confidence: 99%

“…Research and development in this field is growing every day with better and more efficient coatings being released on the market [2]. Some of those coatings are hydrophobic or superhydrophobic and others claim to be icephobic [3]. They could provide a certain degree of protection against icing events, especially in-flight combined with other protection systems, but unless they can provide a full protection on the ground, their interactions with the ground de-icing and anti-icing fluids need to be fully understood before their application on aircraft.…”

Section: Introductionmentioning

confidence: 99%

Effect of Various Surface Coatings on De-Icing/Anti-Icing Fluids Aerodynamic and Endurance Time Performances

2019

Self Cite

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The Anti-icing Materials International Laboratory (AMIL) has been testing SAE AMS1424 and AMS1428 ground de-icing/anti-icing fluids for more than 30 years. With the introduction of new surface coatings and their investigation as potential passive ice protection systems, or for hybrid use with other methods, it is important to understand their interaction with the ground de-icing/anti-icing fluids prior to applications on aircraft. In this study, five different surface coatings, both commercially available and under development, have been tested under two current test methods used to qualify the ground de-icing/anti-icing fluids: The Water Spray Endurance Test (WSET) and the Aerodynamic Acceptance Test (AAT). The tests were performed on three existing commercial de-icing/anti-icing fluids. The results have shown that the coatings tested in this study can considerably reduce the endurance time of the fluids and affect their ability to spread and wet the test surface. Superhydrophobic 1 coating also reduced the aerodynamic penalties created by the Ref. Fluid. Surface coatings, no matter their nature, can impact the performances and behaviour of the fluids and should be thoroughly tested before their use in the industry. The conclusions and methodology of this study were used in the development of sections of the SAE AIR6232 Aircraft Surface Coating Interaction with the Aircraft Deicing/Anti-Icing Fluids standard.

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Icephobicity: Definition and Measurement Regarding Atmospheric Icing

Cited by 15 publications

References 33 publications

Nanoscale Correlations of Ice Adhesion Strength and Water Contact Angle

Nanoscale Correlations of Ice Adhesion Strength and Water Contact Angle

Assessment of Icephobic Coatings—How Can We Monitor Performance Durability?

Effect of Various Surface Coatings on De-Icing/Anti-Icing Fluids Aerodynamic and Endurance Time Performances

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