| 摘要 |
PURPOSE: A corrosion and rust stain preventing agent for the cooling system of vehicles is provided, to improve the lifetime of the cooling system and an engine by adding the corrosion and rust stain preventing agent in a cooling water. CONSTITUTION: The corrosion and rust stain preventing agent is prepared by mixing 53 % of silicon dioxide (SiO2), 30 % of sodium oxide (NaO), 10 % of sodium tripolyphosphate (Na5P3O10) and 7 % of potassium carbonate (K2CO3); and melting the mixture and effluxing the molten mixture at a temperature of 1,000-2,000 deg.C to liquefy the mixture. |
