A Wind Tunnel Experimental Study of Icing on NACA0012 Aircraft Airfoil with Silicon Compounds Modified Polyurethane Coatings

Abstract

Ice formation on the aerodynamic surfaces of an aircraft is regarded as a major problem in the aerospace industry. Ice accumulation may damage parts, sensors and controllers and alter the aerodynamics of the airplane, leading to a range of undesired consequences, including flight delays, emergency landings, damaged parts and increased energy consumption. There are various approaches to reducing ice accretion, one of them being the application of icephobic coatings. In this work, commercially available polyurethane-based coatings were modified and deposited on NACA 0012 aircraft airfoils. A hybrid modification of polyurethane (PUR) topcoats was adopted by the addition of nanosilica and three-functional spherosilicates (a variety of silsesqioxane compound), which owe their unique properties to the presence of three different groups. The ice accretion on the manufactured nanocomposites was determined in an icing wind tunnel. The tests were performed under three different icing conditions: glaze ice, rime ice and mixed ice. Furthermore, the surface topography and wetting behavior (static contact angle and contact angle hysteresis) were investigated. It was found that the anti-icing properties of polyurethane nanocomposite coatings strongly depend on the icing conditions under which they are tested. Moreover, the addition of nanosilica and spherosilicates enabled the reduction of accreted ice by 65% in comparison to the neat topcoat.

Synergistic Enhancement of Low-Temperature Self-Repairing Polyurethane Elastomers through Quadruple Hydrogen Bonds and Coordination Bonds

“…In recent years, they have garnered widespread interest due to their environmental friendliness and recyclability. They have shown significant advancements in terms of service life, durability, and safety, 3 finding applications in various fields such as automobiles, 4,5 aircraft, 6,7 construction, 8−11 and medical devices. 12−14 Usually, the self-healing supramolecular PU occurs through various interactions at the fracture site, such as hydrogen bonds (H-bonds), 15−17 ionic interactions, 18 π−π stacking, 19−21 disulfide bonds, 22−24 Diels−Alder (D-A) thermoreversible covalent bonds, 25,26 metal−ligand coordination bonds, 21 and synergistic interactions of various forces.…”

“…In recent years, they have garnered widespread interest due to their environmental friendliness and recyclability. They have shown significant advancements in terms of service life, durability, and safety, finding applications in various fields such as automobiles, , aircraft, , construction, − and medical devices. − …”

OH End-Capped Silicone as an Effective Nucleating Agent for Polylactide—A Robotizing Method for Evaluating the Mechanical Characteristics of PLA/Silicone Blends

“…Additionally, it allows for a thorough, continuous analysis of the properties of the created polymeric materials. Our previous research has indicated the advantageous impacts of organosilicon compounds on the physicochemical and mechanical characteristics of not only polylactide, but also other types of polymers [ 47 , 48 , 49 ]. In this study, blends of PLA (polylactic acid) and silicone polymer, with varying mass content of each component, were produced using precise dosing methods.…”