Open Access
International Communications in Heat and Mass Transfer, volume 129, pages 105698
Anti-icing fluids interaction with surfaces: Ice protection and wettability change
Ivan S Borodulin
2, 3
,
Igor A Usachev
1
,
A. Amirfazli
4
,
Vladimir P. Drachev
2, 5
,
Nadezhda I Rudenko
6
,
Ramil K Gattarov
6
,
Ivan K Bakulin
2, 3
,
Michael V. Makarov
6
,
6
Aviation Certification Centre, Federal State Unitary Enterprise State Research Institute of Civil Aviation, Mikhalkovskaya ul., D.67, building 1, Moscow 125438, Russian Federation
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Publication type: Journal Article
Publication date: 2021-12-01
scimago Q1
wos Q1
SJR: 1.052
CiteScore: 11.0
Impact factor: 6.4
ISSN: 07351933, 18790178
General Chemical Engineering
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Abstract
Some aircraft anti-icing fluids can dangerously weaken on hydrophobic surfaces. However, information about such fluids and surfaces was not full. Therefore, we considered the interaction of commercially available Newtonian and pseudo-plastic anti-icing fluids with super-hydrophilic and hydrophobic aluminum surfaces. In freezing rain simulations, no noticeable surface effect was observed on fluid endurance times at 10% ice coverage of the surfaces. The difference with previous works can be caused by fluid surface tensions, the contact angle hysteresis of test plates, and fluid viscosity (the last is irrelevant for Newtonian fluids). In further comparative studies, the roughness must also be considered because on rough hydrophobic surfaces the Newtonian fluid took longer to freeze once ice coverage surpassed 20% compared to smooth super-hydrophilic surfaces. Furthermore, the fluid physical adsorption in the surface texture leads to the drifting of receding contact angles of water on hydrophobic surfaces, thereby worsening their water-repelling. Thus, smooth hydrophobic surfaces are probably the preferred solution for ice mitigation systems contacting aircraft anti-icing fluids.
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