Anhydrous graphene oxide cooling liquid for engine and preparation method thereof

Abstract

The invention relates to anhydrous graphene oxide cooling liquid for an engine. The preparation method of the anhydrous graphene oxide cooling liquid comprises the following steps: mixing the following materials in percentage by weight: 30%-65% of ethylene glycol, 30%-65% of propylene glycol, 0.2%-3% of graphene oxide, 0.2%-2% of organic silicon defoaming agents and 0.7%-8% of composite corrosion inhibitor, and uniformly stirring till all the materials are dissolved. The anhydrous graphene oxide cooling liquid disclosed by the invention achieves high heat conductivity, has a freezing point being lower than -50 DEG C and a boiling point being as high as 188.5 DEG C and also has good corrosion resistance. According to the anhydrous graphene oxide cooling liquid, the heat conduction coefficient of a cooling system is enhanced by adopting graphene oxide with high heat conductivity; the cooling system can be better prevented from generating spot corrosion and the like through use of the organic silicon defoaming agents; copper structural components inside the engine can be well protected by tolyl triazole and benzotriazole; the pH of the cooling liquid can be effectively regulated and controlled between 7.5 and 10.0 through a neutral buffer system formed by an organic acid and the salts of the organic acid; and the cooling system can be efficiently prevented from generating precipitation, corrosion and water pump leakage by phosphoric acid-ammonium molybdate.

Description

technical field [0001] The invention relates to a graphene oxide water-free coolant for an engine and a preparation method thereof. Background technique [0002] The engine is the core component of the car. The power of the car and the driving of the car air conditioner are all borne by the engine. However, the efficiency of the engine with too high temperature will be reduced or even damaged, and the engine with too low temperature will increase fuel consumption. Therefore, the cooling system is the most effective guarantee to ensure the normal operation of the engine at normal operating temperature. [0003] With the continuous expansion of the engine market, the coolant used in conjunction with it has also been greatly developed. At present, the coolants on the market are basically water-containing coolants (water, ethylene glycol), which have low boiling points, high freezing points, easy cavitation, and poor thermal conductivity, which are no longer sufficient to meet ...

AI Technical Summary

Problems solved by technology

At present, the coolants on the market are basically water-containing coolants (water, ethylene glycol), which have low boiling points, high freezing points, easy cavitation, and poor thermal conductivity, which are no longer sufficient to meet market demand. For example, a large amount of water-containing coolants produce The water vapor forms a steam insulation layer on the metal surface around the cylinder, which makes it impossible to conduct the heat of the engine in a timely manner, and eventually causes the engine to overheat and cause its performance to decline, and the long-term use of water-containing coolant will also cause the cooling system to appear. A series of problems such as corrosion, scale, boiling, etc., cause the cooling system to be replaced every 2 years

[0004] Foreign companies believe that traditional engine coolants (water, ethylene glycol, etc.) are difficult to meet higher cooling requirements, and efficient cooling technology needs to make breakthroughs in the development of new heat transfer media with high thermal conductivity and large specific heat capacity

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