A kind of graphene oxide anhydrous coolant for engine and preparation method thereof

Abstract

The graphene oxide anhydrous cooling liquid for engine used by the present invention comprises ethylene glycol of 30 to 65% by weight, propylene glycol of 30 to 65% by weight, graphene oxide of 0.2 to 3% by weight, and The organic silicon defoamer with a percentage of 0.2-2% and the composite corrosion inhibitor with a weight percentage of 0.7-8% are mixed and stirred evenly until dissolved to obtain an anhydrous cooling liquid. The beneficial effects of the present invention are: strong thermal conductivity, freezing point lower than -50°C, boiling point as high as 188.5°C, and good corrosion resistance; the present invention uses graphene oxide with strong thermal conductivity to improve the thermal conductivity of the cooling system; organosilicon The defoamer can better prevent pitting corrosion in the cooling system; tolyltriazole and benzotriazole can well protect the copper structural parts in the engine; the neutralization buffer system composed of organic acids and their salts can effectively Regulate the pH of the cooling liquid between 7.5 and 10.0; Ammonium Phosphate-Molybdate can effectively prevent precipitation, corrosion and water pump leakage in the cooling system.

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 once every 1-2 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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