Organic fuel cell anti-freeze cooling liquid with low conductivity and ultra-long acting and preparation method of anti-freeze cooling liquid

Abstract

The invention discloses an organic fuel cell anti-freeze cooling liquid with low conductivity and ultra-long acting and a preparation method of the anti-freeze cooling liquid in the field of anti-freeze cooling fluids. The anti-freeze liquid is prepared from components in percentage by weight as follows: 10wt%-70wt% of ethylene glycol, 0.001wt%-0.01wt% of 8-hydroxyquinoline, 0.005wt%-0.02wt% of uracil, 0.01wt%-0.03wt% of 4-acetaminophen, 0.01wt%-0.05wt% of benzotriazole octadecylamine, 0.005wt%-0.05wt% of N-bromosuccinimide, 0.001wt%-0.01wt% of inosine and the balance of deionized water. The preparation method of the anti-freeze liquid comprises the steps as follows: all the components of the anti-freeze cooling fluid are put in a reaction kettle in percentage by mass; the components are stirred and mixed for 30-90 min, so that all components are fully dissolved and mixed uniformly, the mixed solution passes through anion and cation mixed exchange resin by the aid of a pressure pump, and the fuel cell anti-freeze cooling fluid is obtained. The organic fuel cell anti-freeze cooling liquid with low conductivity and ultra-long acting is weakly alkaline, is anti-freezing and anti-boiling and has performance of low conductivity, ultra-long acting and high corrosion inhibition.

Description

technical field [0001] The invention belongs to the field of antifreeze coolant, in particular to a low-conductivity ultra-long-acting organic antifreeze coolant for fuel cells and a manufacturing method thereof. Background technique [0002] Antifreeze coolant is a coolant containing special additives, mainly used in liquid-cooled engine cooling systems. Antifreeze coolant is a mixture of different substances that can be used to lower the freezing point, transfer heat efficiently, and prevent metal corrosion. The main components of antifreeze coolant are usually composed of antifreeze and corrosion inhibitor. At present, the antifreezes used in the market are mainly divided into alcohols, inorganics and polysaccharides, among which alcohols are used the most, and most of the alcohols are water-based antifreezes of ethylene glycol; Corrosion inhibitors are mainly silicates, phosphates or organic carboxylic acids, and this antifreeze is a good choice for fuel engine cooling...

AI Technical Summary

Problems solved by technology

The organic antifreeze coolant in the prior art is a good choice for the fuel engine cooling system, but it cannot meet the requirements of the fuel cell cooling system

The anti-corrosion mechanism of organic type antifreeze is to use organic matter, such as ethylene glycol, to absorb and form a film on the metal surface to play the role of isolation and protection. In contact with oxygen, oxalic acid is generated, the composition of the antifreeze changes, and its pH value becomes acidic. Metal parts such as pipes in the cooling system are corroded in an acidic environment, and a desorption reaction occurs. A large number of metal ions are produced in the antifreeze, causing The sharp increase of the conductivity of the solution, the conductivity increased to more than 120μs / cm, affects the proton exchange of the fuel cell; after the ethylene glycol is oxidized, the freezing point of the antifreeze is raised and the boiling point is lowered, which affects the antifreeze and anti-boiling of the antifreeze performance

At present, fuel cell antifreeze coolant is mainly imported, the price is generally high, and the delivery cycle is long

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