| 摘要 |
Low-freezing universal cooling agent with anticorrosive properties based on glycol composition composed of 85-90 percent by weight of monoethyl glycol, 5-15 percent by weight of diethylene glycol, 0.3-3.0 percent by weight of triethylene glycol and 0.1-1.0 percent by weight of ethylene polyglycols, which contains corrosion inhibitors and anti-foaming agents, whereby it is composed of the glycol composition in the amount of 90-98 percent by weight of the mixture of sodium oxide and silicone dioxide with the molar ratio of SiO2 to Na2O equal to 3.3 in the form of water glass with water content of 65 percent by weight in the amount of 0.01-0.2 percent by weight, sodium nitrate in the amount of 0.05-0.35 percent by weight, sodium tetraborate decahydrate in the amount of 0.2-4 percent by weight, 50 percent aqueous solution of sodium salt of 2-mercaptobenzotriazole and/or tolytriazole (TTA) in the amount of 0.05-0.5 percent by weight, 15 percent aqueous solution of sodium hydroxide in the amount of 0.1-1 percent by weight, 50 percent aqueous solution of organoreactive anionic alkylphosphonate and non-organic sodium silicate in the amount of 0.001-0.5 percent by weight, an anti-foaming agent in the amount of 0.005-0.2 percent by weight and, possibly, a colour in the amount of 0.001-0.01 percent by weight. |
