Introduction

With the continuous development of automobile industry, the performance of automobile engine cooling system has been paid more and more attention. Antifreeze directly affects the performance and safety of the vehicle which plays an important part of the cooling system, and HEC, a common additive, performs an increasingly significant role in antifreeze. This paper will introduce the application of HEC in antifreeze and its mechanism in detail.

The Mechanism of Action of HEC

The role of HEC in antifreeze is mainly reflected in the following aspects:

1.Anti-scale performance: HEC can be adsorbed on metal surfaces to form a protective film, that can prevent the formation and deposition of scale effectively, keep the cooling system clean and work properly.

2.Corrosion resistance: HEC can inhibit the growth and reproduction of microorganisms, which can prevents the corrosion by microorganisms in the cooling system.

3.Anti-boiling performance: HEC can change the surface tension of water, to make water is not easy to boil at high temperatures, that improve the anti-boiling performance of antifreeze.

4.Anti-freezing performance: HEC can reduce the freezing point of water, thereby improving the antifreeze performance of antifreeze.

The Application of HEC in Antifreeze

The application of HEC in antifreeze is mainly manifested in the following aspects:

1.Improve the Anti-scale performance characteristic: By adding proper amount of HEC, the anti-scale performance of antifreeze can be significantly improved and the service life of cooling system can be extended.

2.Improve the corrosion resistance: HEC can prevents the corrosion by microorganisms in the cooling system, improving the safety of the automobile.

3.Improve the anti-boiling performance: In a high temperature environment, the antifreeze added with HEC has better anti-boiling performance and can effectively prevent the engine from overheating.

4.Improve the anti-boiling performance: In a high temperature environment, the antifreeze added with HEC has better anti-boiling performance and can effectively prevent the engine from overheating.

Conclusion

Hydroxyethyl Cellulose(HEC) , as a common additive, performs an increasingly significant role in antifreeze. The anti-scale, corrosion resistance, anti-boiling and anti-freezing properties of antifreeze were improved by changing the surface tension of water, inhibiting the growth and reproduction of microorganisms and reducing the freezing point of water. In practical applications, HEC has become an important part of many brands of antifreeze. With the continuous development of the automobile industry, the application of HEC in antifreeze will be more and more extensive.