A kind of aircraft oxygen system leak detection agent and preparation method thereof

Abstract

The invention discloses an aircraft oxygen system leak detection agent and a preparation method thereof, wherein the aircraft oxygen system leak detection agent comprises: 0.2-0.3% sodium myristoyl isethionate, 0.05-0.1% % of tea saponin, 0.05-0.1% of foam stabilizing and corrosion inhibiting aid, and the balance is deionized water. The foam stabilizing and corrosion inhibiting aid has alkenyl, amido, hydroxyl, ≡ A variety of functional groups of N→O group, among which, amide group and ≡N→O group are hydrophilic, which makes it have the foaming and foam stabilizing effect of surfactant, and can enhance the performance of sodium myristoyl isethionate Foam height and persistence; long-chain alkenyl can be directional adsorbed to the metal surface to form a dense adsorption layer to protect the metal from corrosion, and can act synergistically with tea saponin in corrosion inhibition; ≡N→O adsorbs H+ in aqueous solution, and partially forms Quaternary ammonium group, which makes it have a certain anti-mold effect, and has a synergistic antibacterial effect with tea saponin, which together guarantees that the product will not deteriorate; in addition, it also has a buffering effect that stabilizes the pH value.

Description

technical field [0001] The invention relates to the field of leak detection agent preparation, in particular to an aircraft oxygen system leak detection agent and a preparation method thereof. Background technique [0002] The oxygen system of an aircraft is the guarantee of life. The airtightness of the oxygen system needs to be checked before the flight to ensure flight safety. This requires a special leak detector to detect. Aircraft leak tester is a high-foam, low-residue, non-corrosive to aluminum alloy, carbon steel, copper and other metals. When in use, it is sprayed on the surface of the gas pipeline and judged by observing whether there are bubbles. Is there a leak. [0003] According to the regulations of the Civil Aviation Administration, the leak detection agent used on the aircraft must meet the technical requirements of the US military standard MIL-PRF-25567E. The technical requirements stipulate that the non-volatile matter of the leak detection agent should ...

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a leak detection agent for an aircraft oxygen system and a preparation method thereof, aiming at solving the problem of poor performance of the leak detection agent used on existing aircraft

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