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Method for preparing automobile engine cooling liquid

A technology of automobile engine and coolant, which is applied in the field of coolant, can solve problems such as corrosion, achieve the effects of delaying the corrosion process, obvious anti-corrosion effect, and improving thermal stability

Active Publication Date: 2018-09-28
LIAONING QIZHONG LUBRICATING OIL MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Technical problem to be solved by the present invention: Aiming at the problem that the existing automobile engine coolant has defects in preventing aluminum pump cavitation corrosion, a preparation method of automobile engine coolant is provided

Method used

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  • Method for preparing automobile engine cooling liquid

Examples

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example 1

[0026] Mix Span80 and OP-10 uniformly at a mass ratio of 8:1 to obtain a composite emulsifier, add the composite emulsifier and ammonia water to cyclohexane at a mass ratio of 1:0.2:12, and stir magnetically for 1 hour to obtain emulsion A, press Mix graphene and emulsion A at a mass ratio of 1:5, and ultrasonically disperse for 20 minutes to obtain a dispersion; mix benzoic acid, triethylenetetramine and xylene uniformly at a mass ratio of 1:1.2:2, and stir at a temperature of 150°C React for 2 hours, continue to slowly heat up to 220°C, stir and react for 2h to obtain an imidazoline intermediate, then cool the system to 90°C and add isopropanol and water with a volume ratio of 2:1 as solvent, add a quaternizing agent to react for 4 hours, To obtain the complex, add the complex to deionized water according to the mass ratio of 0.1:10, and ultrasonicate for 10 minutes to obtain the mixed solution; under mechanical stirring, slowly add the mixed solution to the dispersion liquid...

example 2

[0028]Mix Span80 and OP-10 uniformly at a mass ratio of 8:1 to obtain a composite emulsifier, add the composite emulsifier and ammonia water to cyclohexane at a mass ratio of 1:0.2:12, and stir magnetically for 1 hour to obtain emulsion A, press Mix graphene and emulsion A at a mass ratio of 1:5, ultrasonically disperse for 25 minutes to obtain a dispersion; mix benzoic acid, triethylenetetramine and xylene uniformly at a mass ratio of 1:1.2:2, and stir at a temperature of 155°C React for 2 hours, continue to slowly heat up to 235°C, stir and react for 2h to obtain an imidazoline intermediate, then cool the system to 95°C and add isopropanol and water with a volume ratio of 2:1 as solvent, add a quaternizing agent to react for 5 hours, To obtain the complex, add the complex to deionized water according to the mass ratio of 0.1:10, and ultrasonicate for 15 minutes to obtain the mixed solution; under mechanical stirring, the mixed solution is slowly added to the dispersion accord...

example 3

[0030] Mix Span80 and OP-10 uniformly at a mass ratio of 8:1 to obtain a composite emulsifier, add the composite emulsifier and ammonia water to cyclohexane at a mass ratio of 1:0.2:12, and stir magnetically for 2 hours to obtain emulsion A, press Mix graphene and emulsion A at a mass ratio of 1:5, and ultrasonically disperse for 30 minutes to obtain a dispersion; mix benzoic acid, triethylenetetramine and xylene uniformly at a mass ratio of 1:1.2:2, and stir at a temperature of 160°C React for 3 hours, continue to slowly heat up to 250°C, stir and react for 3h to obtain an imidazoline intermediate, then cool the system down to 100°C and add isopropanol and water with a volume ratio of 2:1 as solvent, add a quaternizing agent to react for 6h, To obtain the complex, add the complex to deionized water according to the mass ratio of 0.1:10, and ultrasonicate for 20 minutes to obtain the mixed solution; under mechanical stirring, slowly add the mixed solution to the dispersion liqu...

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Abstract

The invention relates to a method for preparing automobile engine cooling liquid, and belongs to the technical field of cooling liquid. The method has the advantages that graphene / silicon dioxide areused as wall materials, imidazoline quaternary ammonium salt is used as a core material, graphene / silicon dioxide porous micro-capsules with loaded corrosion inhibitors are prepared, accordingly, passing of water and atoms of gas such as oxygen can be effectively obstructed, and excellent protection effects still can be realized for metal substrates by graphene even if the metal substrates are exposed in environments with oxygen partial pressures reaching 10<-4> mbar; the heat stability of the composite micro-capsules can be improved, accordingly, the anti-corrosion properties of the automobile engine cooling liquid prepared by the aid of the method can be obviously improved, uniform and dense adsorption films with rhombohedral crystalline-state textures can be formed on metal surfaces, and corrosion procedures can be delayed; processes for coating the prepared corrosion inhibitors are low in usage, obvious anti-corrosion effects can be realized, the corrosion inhibitors are low in release rate, are continuously diffused to exposed matrix surfaces in soaking procedures and act with the exposed matrix surfaces to form the films, and accordingly matrix corrosion can be inhibited.

Description

technical field [0001] The invention relates to a method for preparing automobile engine coolant, which belongs to the technical field of coolant. Background technique [0002] Engine coolant, like lubricating oil, is an essential part of keeping the engine running properly. Coolant is the heat transfer medium in the cooling system, which has the functions of cooling, anti-corrosion, anti-scaling and anti-freezing. [0003] Coolant consists of water, antifreeze and various additives. Water is an important component in coolant. Water has a large specific heat capacity and fast heat conduction, and the heat absorbed by water is easily dissipated, so water has many advantages when used as a cooling liquid. Due to the high freezing point of water, it is easy to freeze when used in severe cold and low temperature weather, so a certain amount of antifreeze is added to the coolant. The main function of antifreeze is to lower the freezing point of the coolant. There are many su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/20
CPCC09K5/20
Inventor 胡次兵张鑫朱华
Owner LIAONING QIZHONG LUBRICATING OIL MFG
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