Motor vehicle antifreeze fluid and preparation method thereof

A technology of automobile antifreeze and antifreeze, which is applied in the direction of chemical instruments and methods, heat exchange materials, etc., can solve the problems of engine temperature rise, coolant thermal conductivity reduction, easy scale formation, etc., to delay the formation time and heat conduction Reduced resistance, good anti-freeze sticking performance

Inactive Publication Date: 2018-06-22
吴迪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: the current automobile antifreeze is easy to corrode metal parts during use, and the metal parts corroded for a long time will generate a large amount of rust, which will gradually corrode the metal plate and cause leakage, which is directly related to The service life of the car cooling system is also prone to

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] A preparation method of automobile antifreeze includes the following steps:

[0023] According to mass parts, take 55~58 parts of ethylene glycol, 40~45 parts of water, 0.3~0.5 parts of glycine, 0.5~0.7 parts of triethanolamine, 3~5 parts of red dye, 12~15 parts of antifreeze additive a , 8~12 parts of antifreeze additive b, 12~15 parts of antifreeze additive c are mixed to obtain automobile antifreeze.

Example Embodiment

[0024] Example 1

[0025] Waste oil: from the university canteen.

[0026] Aqueous acrylic emulsion: purchased from Foshan Tongde Chemical Company; Nano-silica: purchased from BYK Chemical Company, Germany.

[0027] Antioxidant: Take the myrobalan fruit and dry it, crush it through an 80-mesh sieve, collect the sieved particles, add 70% acetone solution at a mass ratio of 1:4, and ultrasonically extract at 25°C for 50 minutes, repeat twice, and combine the extracts. Concentrate under reduced pressure, take the reduced pressure concentrate and add ethyl acetate to extract at a mass ratio of 1:3, take the extract and concentrate under reduced pressure to obtain an antioxidant.

[0028] Antifreeze additive a: Take waste oil and add p-hydroxydiphenylamine according to the mass of 45:1, stir and mix at 35℃ for 20min, take the mixture according to the mass ratio of 10:4:3, add activated carbon and antioxidants, heat up to 95℃ for 1h, Let stand for 2h, add 1% of the mixture mass of 2-amino-...

Example Embodiment

[0033] Example 2

[0034] Waste oil: from the university canteen.

[0035] Aqueous acrylic emulsion: purchased from Foshan Tongde Chemical Company; Nano-silica: purchased from BYK Chemical Company, Germany.

[0036] Antioxidant: Take the myrobalan fruit and dry it, crush it through an 80-mesh sieve, collect the sieved particles, add 70% acetone solution at a mass ratio of 1:4, and ultrasonically extract at 30°C for 60 minutes, repeat 3 times, combine the extracts, Concentrate under reduced pressure, take the reduced pressure concentrate and add ethyl acetate at a mass ratio of 1:3 for extraction, take the extract and concentrate under reduced pressure to obtain an antioxidant.

[0037] Antifreeze additive a: Take waste oil and add p-hydroxydiphenylamine at a mass of 45:1, stir and mix at 40℃ for 30min, take the mixture and add activated carbon and antioxidants at a mass ratio of 10:4:3, and heat to 100℃ for 2h. Let it stand for 3h, add 3% of the mixture mass of 2-amino-2-methyl-1-pro...

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PUM

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Abstract

The invention discloses a motor vehicle antifreeze fluid and a preparation method of the motor vehicle antifreeze fluid, and belongs to the field of auto accessories. A slow corrosion inhibitor is prepared from waste cooking oil through the processes of pretreatment, quaterisation reaction and the like, an imidazoline intermediate is obtained through the reaction of the slow corrosion inhibitor and hydroxyethyl ethylenediamine at the high temperature, an imidazoline quaternary ammonium corrosion inhibitor is obtained after the quaterisation of the imidazoline intermediate through benzyl chloride, an imidazole ring and a polar group in the molecule interact, the imidazoline quaternary ammonium corrosion inhibitor is preferentially adsorbed onto the surface of metal in the adsorption and isfavorable for forming a stable protection film on the surface of the metal, moreover, a dense hydrophobic film is formed far from the surface of the metal due to the free moving and extending of a hydrophobic branch and hinders the contact between a corrosive medium and a metal matrix, and the effect of relieving the metal corrosion is achieved. The motor vehicle antifreeze fluid solves the problems that the motor vehicle antifreeze fluid corrodes a metal part in the use process and also forms a scale easily at present.

Description

technical field [0001] The invention belongs to the field of automobile supplies, and in particular relates to an automobile antifreeze and a preparation method thereof. Background technique [0002] Automobile antifreeze, also known as "antifreeze" or "antifreeze", is called automobile antifreeze coolant, which means a coolant with antifreeze function, in order to make the car continue to be used at low temperatures in winter. Engine coolant will add some substances that can lower the freezing point of water as antifreeze to keep the cooling system from freezing in low temperature weather. [0003] The earliest automobile engines were of two types, water-cooled and air-cooled. Water-cooled engines had a better cooling effect due to heat dissipation through radiators, so they were more and more widely used in high-power automobile engines. Water is a good heat transfer medium, but it does not have antifreeze effect in low temperature weather, so it is necessary to add a sub...

Claims

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Application Information

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IPC IPC(8): C09K5/20C23F11/14
CPCC09K5/20C23F11/149
Inventor 吴迪郑薇程依
Owner 吴迪
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