Coolant, also known as antifreeze, is a liquid composed of antifreeze additives, additives to prevent metal corrosion and water. Need anti-freezing, anti-corrosion, heat conduction and non-deterioration. At present, commonly used antifreeze includes antifreeze with ethylene glycol as the main component, anti-corrosion additives and water.
The cooling system of diesel locomotive engine is a liquid-cooled closed circulation system consisting of cylinder, water jacket and water tank. The working state of the cooling system directly affects the normal operation and service life of the vehicle. Antifreeze is the cooling medium of the circulating cooling system of internal combustion engine, which is mainly composed of antifreeze, corrosion inhibitor, defoamer, colorant, mildew inhibitor and buffer. With the development of automobile industry, the requirements for engine performance are getting higher and higher. The antifreeze requires not only low freezing point and high boiling point, but also good metal corrosion resistance, cavitation resistance, scaling resistance, little or no environmental pollution and long service life.
Many countries have done a lot of research on this, and constantly introduced formula patents and excellent antifreeze products. The permeability of antifreeze in some advanced countries has reached 100%. The permeability of antifreeze in China is low, and a considerable part of antifreeze in the market is imported. Because of its high price, it is generally used for imported cars. Although the output of antifreeze in China has increased rapidly in recent years, many products lack strict quality inspection and unified inspection standards. Therefore, it is necessary to absorb foreign advanced technology and combine the reality of our country to develop and produce multifunctional and efficient antifreeze to meet the growing market demand.