What is antifreeze and what are the functions of automobile antifreeze

Many people think that antifreeze is only needed in winter. This is a long-term misunderstanding. The full name of antifreeze is called antifreeze coolant, which is a kind of coolant containing special additives. The main component of most antifreeze is ethylene glycol, because ethylene glycol has a high boiling point and a low freezing point. What are its functions?

Automobile antifreeze is mainly used in the cooling system of liquid-cooled engines. It has excellent performances such as antifreeze in winter, anti-boiling in summer, anti-scaling, and anti-corrosion. The specific effects of automobile antifreeze are as follows:

1, Cooling effect

Automobile antifreeze is also called coolant. As the name suggests, it is used for cooling, which is also the basic function. When the car is in use, the engine is in a high-temperature operation state. If the car engine has been working at a high temperature, the engine will be damaged or even paralyzed in a short time. The car antifreeze is added to the cooling system, and the heat of the engine will pass through the cooling system. After the heat is reduced, it will be dissipated to the surroundings to cool down and avoid boiling.

2,Antifreeze effect

In winter, the temperature is low, and the engine and cooling system are easy to freeze, causing the car to fail to start. In order to enable the car to continue to be used at low temperatures in winter, some antifreeze is added to the car antifreeze. Generally, the freezing point can reach minus 40 ℃, and better can reach minus 60 ℃. It can keep the cooling system from freezing in low temperature weather. Antifreeze effect.

3, Antiseptic effect

Most of the automotive cooling system components are made of metal. Due to the different electrode potentials of different metals, electrochemical corrosion is prone to occur under the action of the electrolyte. A certain amount of anti-corrosion additives are added to the automotive antifreeze, which can be added to the refrigeration system to prevent the cooling system from generating Corrosion, play an anti-corrosion effect.

4, Anti-scaling effect

Water contains a lot of anions and cations. When added to the car cooling system, the cations in the water will react with other anions to form scale during use. The car antifreeze is produced and filled with deionized water that has been softened. So it has an anti-scaling effect.