Novel formula of efficient and compounded anti-freezing fluid

Abstract

The invention discloses a novel formula of efficient and compounded anti-freezing fluid. The anti-freezing fluid is prepared from the following ingredients in parts by weight: 10-20 parts of diethylene glycol, 2-3 parts of calcium formate, 0.1-0.5 part of fulvic acid, 0.3-0.5 part of isopropyl nitrate, 10-15 parts of sodium nitrite, 10-20 parts of ethylene glycol, 1-3 parts of silicate stabilizer, 5-10 parts of triethanolamine, 2-5 parts of scale-inhibiting corrosion inhibitor, 0.5-1 part of methyl silicone oil and 10-15 parts of deionized water. The anti-freezing fluid does not ice up at the temperature of -45 DEG C, the foam disappearance time is shorter than 3 seconds, carboxylate radicals of a high polymer and sulfonate radicals of sulfonated polystyrene undergo adsorption with positively-charged metal ions in ethylene glycol and an aqueous solution, so as to form a protective film, and thus, metal is protected from corrosion; the anti-freezing fluid does not contain nitrite and phosphate, so that the environmental friendliness is superior, and a good corrosion inhibition effect is fully exerted based on 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] A...

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.