Anti-freezing solution for engine

Abstract

The invention discloses an anti-freezing solution formula for an engine. According to the formula, an anti-freezing solution is prepared from, by weight, 10-20 parts of diethylene glycol, 0.5-1 part of calcium chloride, 10-15 parts of sodium nitrite, 10-20 parts of sodium iodide, 1-3 parts of silicate stabilizer, 5-10 parts of triethanolamine, 2-3 parts of sodium phosphate, 0.1-0.5 part of brassin, 0.3-0.5 part of vinyl acetate and 10-15 parts of deionized water. The anti-freezing solution is not frozen at the temperature of -45 DEG C, the foam disappearing time is shorter than 3 seconds, carboxylate radicals of the high polymers and sulfonate radicals of sulfonated polystyrene absorb metal ions, in sodium iodide and an aqueous solution, with positive charges, and a protective film is formed, so that metal is protected from being corroded; the anti-freezing solution is free of nitrite and phosphate and excellent in environmental friendliness, and fully plays a good corrosion inhibition effect on the basis of an anti-freezing effect.

Description

technical field [0001] The invention belongs to the technical field of antifreeze, in particular to a novel high-efficiency composite antifreeze formula in which a metal protective film is formed by a high polymer. Background technique [0002] Many corrosion inhibitors in antifreeze on the market contain phosphate or nitrite, which will pollute the environment after use. Corrosion inhibitors in antifreeze on the market are mainly divided into: anodic corrosion inhibitors and cathodic corrosion inhibitors. Since automobiles are composed of metal components with different components, different components of metal components require different corrosion inhibitors. Sodium nitrite has a good corrosion inhibition effect on steel and cast iron, but it produces pitting corrosion on solder. Although the cost of these single-species corrosion inhibitors is low, it is difficult to meet the performance requirements of antifreeze in many aspects. Contents of the invention [0003] Ai...

AI Technical Summary

Problems solved by technology

[0002] Many corrosion inhibitors in antifreeze on the market contain phosphate or nitrite, which will pollute the environment after use

Corrosion inhibitors in antifreeze on the market are mainly divided into: anodic corrosion inhibitors and cathodic corrosion inhibitors. Since automobiles are composed of metal components with different components, different components of metal components require different corrosion inhibitors. Sodium nitrite has a good corrosion inhibition effect on steel and cast iron, but it can cause pitting corrosion on solder. Although the cost of these single-species corrosion inhibitors is low, it is difficult to meet the performance requirements of antifreeze in many aspects.