Environment-friendly airfield pavement deicing agent and preparation method thereof

Abstract

The invention belongs to the technical field of pavement deicing agents and particularly relates to an environment-friendly low-corrosive deicing agent suitable for airfield pavements and a preparation method thereof; the deicing agent is made from C1-C4 organic acid salts and a composite corrosion inhibitor, C1-C4 organic acid salts are one or more of potassium salts or sodium salts of formic acid, acetic acid, propionic acid, lactic acid and succinic acid, and the composite corrosion inhibitor comprises water-soluble silicon compounds and multicomponent organic carboxylates. The pavement deicing agent discussed herein is safe to aircraft materials, is particularly efficient in inhibiting the corrosion of cadmium-plated steel parts due to repeated contact with the deicing agent, meets all airworthiness requirements for airfield pavement deicing agents provided in currently effective international universal standards AMS11431 and AMS1435, and is suitable particularly for airfield pavement deicing and ice control.

Description

technical field [0001] The invention belongs to the technical field of pavement deicing and anti-icing agents, and in particular relates to an environmentally friendly and less corrosive deicing and anti-icing agent suitable for airport pavements and a preparation method thereof. Background technique [0002] Under ice and snow weather conditions, when the airport is snowed and icy, not only the friction coefficient of the runway, taxiway and apron will be significantly reduced, but the snow may also cover the take-off and landing marks, road signs, etc., seriously threatening the normal taxiing of the aircraft , takeoff and landing. Therefore, deicing and anti-icing of airport pavement is one of the essential activities for the aviation industry to maintain the safety of winter operations. Today, the most effective way to ensure the safety of aircraft flying in winter is to use chemical deicers to remove and prevent the formation of ice and snow on airport pavements. [0...

AI Technical Summary

Problems solved by technology

From the above patents, it can be found that inorganic silicate is the most commonly used corrosion inhibitor in organic acid salt pavement deicing agents. Inorganic silicate is cheap, non-toxic, and environmentally friendly. When the amount introduced is sufficient, it can protect various metals. , but it is susceptible to the influence of salt content, pH value, etc. to reduce its storage stability and corrosion inhibition performance. It is also difficult to guarantee the corrosion inhibition of various metal materials of aircraft with a single inorganic silicate. Phosphorous compounds and other Composition, to further improve the corrosion inhibition of a variety of metal materials, and the large use of phosphorus compounds will cause eutrophication of soil, especially water, which is limited by environmental protection requirements

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