Aircraft de-icing and anti-icing fluid thickened by super-long-chain polyoxyethylene ether surfactant and preparation method of aircraft de-icing and anti-icing fluid

By using ultra-long chain polyoxyethylene ether surfactant to thicken the anti-icing liquid, the problem of polymer rehydration on the surface of the aircraft is solved, and the effect of good anti-icing performance and environmentally friendly is achieved, while reducing the risk of corrosion on the surface of the aircraft.

CN119709128AActive Publication Date: 2025-03-28SICHUAN UNIV
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Patent Information

Application Number
CN202411969171.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-03-28
Estimated Expiration
2044-12-30

AI Technical Summary

Technical Problem

The polymers used in existing aircraft deicing and anti-icing liquids are prone to rehydration on the surface of the aircraft to form a hydrated gel, which can block the elevator, causing flight safety risks, and at the same time, surfactants or other additives corrode the surface of the aircraft.

Method used

A de-icing liquid thickened by ultra-long chain polyoxyethylene ether surfactant was used to form a non-Newtonian fluid by mixing polyoxyethylene ether ester (C22-350) with alcohol and deionized water, and a non-Newtonian fluid was formed, replacing the polymer as a thickening agent.

Benefits of technology

The anti-icing liquid has the effect of increasing viscosity and shear thinning at low concentrations, avoiding the formation of hydrated gels, reducing the risk of corrosion on the surface of the aircraft, and having a low cost.

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Abstract

The invention discloses airplane deicing and anti-icing fluid thickened by a super-long chain (the number of carbon atoms in a hydrophobic tail chain is greater than or equal to 18) polyoxyethylene ether surfactant and a preparation method of the airplane deicing and anti-icing fluid. The airplane deicing and anti-icing fluid thickened by the super-long-chain polyoxyethylene ether surfactant comprises the following components in percentage by mass: 40%-69% of alcohol, 30%-59% of deionized water and 0.2%-2.0% of a surfactant, the surfactant is docosanoic acid polyoxyethylene monomethyl ether ester (C22-350), and the super-long-chain polyoxyethylene ether surfactant is sodium dodecyl benzene sulfonate. The de-icing and anti-icing fluid which is good in de-icing and anti-icing performance and environmentally friendly is obtained, and on the premise that the de-icing and anti-icing effect is guaranteed, the problems that a polymer-based de-icing and anti-icing fluid is prone to being rehydrated on the surface of an airplane to form hydrated gel, and the surface of the airplane is corroded by a surface active agent or other additives are solved.
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