Anhydrous coolant and preparation method thereof

Abstract

The invention discloses an anhydrous coolant and a preparation method thereof. The anhydrous coolant comprises raw materials in parts by weight as follows: 1,000 parts of propylene glycol, 2.4-2.6 parts of an acidic preservative, 1.5-1.7 parts of borax, 1.4-1.6 parts of sodium nitrite, 1.4-1.6 parts of triethanolamine, 0.2-0.4 parts of benzotriazole, 0.05-0.15 parts of a defoaming agent, 5-7 parts of a bittering agent and 0.009-0.011 parts of a pigment. All components of the anhydrous coolant supplement one another and cooperate with one another to have the synergistic effect, the anhydrous coolant has the excellent performance and the wide adaptability, can be perfectly compatible with a hydrous coolant left during replacement of the coolant, enables an engine cooling system to work in a non-pressure or micro-pressure environment, can play a noise reduction role in an engine and cannot age and damage rubber pipelines in advance, so that usage and maintenance costs are reduced, and the service life of the engine is greatly prolonged. Besides, no water exists, so that propylene glycol cannot be acidic at the high temperature, the service life can be prolonged, frequent replacement is not required, the more environment-friendly effect is realized, and the long-term comprehensive cost performance is particularly high.

Description

technical field [0001] The invention relates to an engine coolant, in particular to an anhydrous coolant and a preparation method thereof. Background technique [0002] At present, the most common engine coolant in China is antifreeze coolant with ethylene glycol, pure water and some auxiliary materials in proportion. The advantage is that the price is relatively low, the preparation technology is relatively mature, and domestic and most joint venture brand engines are almost used. However, ethylene glycol is toxic, and due to the existence of water in the process of use, high temperature operation will deteriorate and cause destructive corrosion within 2-3 years, so it must be replaced at a cycle of 2-3 years, and the heavily used engine should be replaced more frequently . If things go on like this, the replaced antifreeze has no reasonable standard to deal with, so it will cause more damage to the increasingly severe environment. If the water is removed, it is only eth...

AI Technical Summary

Problems solved by technology

However, the above mentioned can be used directly in theory without water in the cooling system. The actual situation is that in the assembly of new cars, due to factors such as sales costs and post-maintenance industry chain profits, there are very few domestic manufacturers. Exterior models are equipped with water-free coolant, so when users need to replace it in the later maintenance, due to the complex structure of the cooling system, it is impossible to completely remove the old water-containing antifreeze, so the remaining part will destroy the simple propylene glycol, resulting in uncontrollable destructive, so the existing propylene glycol anhydrous coolant does not have a wide range of adaptability, and cannot be perfectly compatible with the residual water-containing antifreeze

Secondly, the existing propylene glycol anhydrous coolants at home and abroad are not toned in order to advertise the difference from water-containing coolants, resulting in leaks in the cooling system that cannot be detected in advance, resulting in minor hidden dangers and major failures

In addition, the coolant is a chemical product, and children are easy to eat it by mistake during storage, which affects personal safety

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