Vehicle methanol fuel corrosion-inhibitor for various metals

Abstract

The invention belongs to the field of substituting an automobile alcohol ether for a fuel additive, and in particular relates to a vehicle methanol fuel corrosion-inhibitor for various metals. The methanol fuel corrosion-inhibitor for various metals is composed of 30-40wt% of imidazoline derivatives, 5-10wt% of dimer acids, 3-7wt% of polyaspartic acid, 3-10wt% of benzoxazole, 1-5wt% of organic amine, 2-6wt% of nitrogen heterocyclic ring-containing compounds, 0.05-0.1wt% of metal ion passivator and the balance of dispersant. The vehicle methanol fuel corrosion-inhibitor is suitable for anti-corrosion and corrosion inhibition of various metals, such as red copper, brass, 45# steel disc, stainless steel, alumium, zinc and tin. Besides, the vehicle methanol fuel corrosion-inhibitor for various metals is low in the addition amount of additives, nontoxic and pollution-free, and belongs to an environment-friendly corrosion inhibitor.

Description

technical field

[0001] The invention belongs to the field of automotive alcohol ether alternative fuel additives, in particular to a metal corrosion inhibitor for methanol fuel used in vehicles. Background technique

[0002] Methanol has properties similar to petroleum in many respects and is therefore considered one of the most promising alternative fuels in internal combustion engines, especially spark ignition engines. Methanol generally contains acidic substances in the production and preparation process; the water absorption of methanol itself makes it contain a small amount of water during storage, and a small amount of organic acid will also be produced by air oxidation or bacterial fermentation; a small amount of aldehydes, Acidic substances such as acid; these acidic substances will cause corrosion and wear to the fuel system and combustion system of engines using alcohol fuels. This problem has been introduced in some patents. Rust inhibitors, alkenyl esters or ...

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