Formula of novel efficient compound anti-freezing fluid

Abstract

The invention discloses a formula of a novel efficient compound anti-freezing fluid. The anti-freezing fluid is prepared from the following components in parts 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 ethylene glycol, 1-3 parts of silicate stabilizer, 5-10 parts of triolamine, 2-5 parts of scaling and corrosion inhibitor, 4-5 parts of carboxymethyl cellulose, 2-4 parts of methyl tert-butyl ether, 0.4-0.6 part of triethanolamine phosphate and 10-15 parts of deionized water. The anti-freezing fluid is not frozen at -45 DEG C, foam disappears in less than 3 seconds, carboxylate radical of high polymer, sulfonate radical of poly(sulfonated styrene) as well as ethylene glycol and metal ions carrying positive charge in an aqueous solution generate adsorption effect to form a protective membrane, so that metal is protected from corrosion. The anti-freezing fluid does not contain nitrite or phosphate, has excellent environmentally friendly property, and can be used for sufficiently achieving the excellent corrosion inhibiting effect based on the 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 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.