CN113234423B - Cooling liquid and preparation method thereof - Google Patents
Cooling liquid and preparation method thereof Download PDFInfo
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- CN113234423B CN113234423B CN202110629222.XA CN202110629222A CN113234423B CN 113234423 B CN113234423 B CN 113234423B CN 202110629222 A CN202110629222 A CN 202110629222A CN 113234423 B CN113234423 B CN 113234423B
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Abstract
The invention discloses a cooling liquid and a preparation method thereof, relating to the technical field of cooling liquid and comprising the following components in parts by mass: 80-90 parts of an antifreezing agent; 10-15 parts of a defoaming agent; 10-15 parts of a corrosion inhibitor; 1-5 parts of a pH regulator; 1-3 parts of a coloring agent; 2-4 parts of heat conduction dispersion particles; 1-3 parts of silicate; 1-3 parts of a stabilizer; 40-50 parts of water; compared with the traditional cooling liquid, the cooling liquid has the advantage that the heat conductivity coefficient of the heat-conducting dispersion particles is far higher than that of the liquid, so that the heat conductivity of the cooling liquid can be improved.
Description
Technical Field
The invention relates to the technical field of cooling liquid, in particular to cooling liquid and a preparation method thereof.
Background
The coolant, also referred to as antifreeze or antifreeze, is one of important auxiliary liquids for maintaining a normal operating temperature of equipment such as an internal combustion engine and ensuring a normal operation of a cooling system, and is important as a coolant for an automobile circulation cooling system as well as lubricating oil, and can protect a normal and smooth operation of the engine. The performance of the coolant directly affects the normal operation and the service life of the internal combustion engine. At first, water is usually used as a cooling liquid, but the greatest disadvantage is that water is easy to freeze, expand in volume and even damage a cooling system under low temperature conditions, and with the development of the automobile industry, the market demand on engine performance is higher and higher, and then water and ethylene glycol are used as base fluids, and various additives (chromate, silicate, molybdate, nitrite and amine substances) are added to prepare the cooling liquid, however, although the cooling liquid can solve the problems of easy freezing and expansion in volume under low temperature conditions, the heat conductivity coefficient is lower, the heat exchange capability is poorer, and the heat dissipation requirement of the cooling system under high load cannot be met.
For example, patent CN200610156131.4 discloses a heavy duty engine coolant, which comprises glycol, demineralized water, borax, aqueous potassium silicate solution, sodium hydroxide, sodium nitrate, sodium phosphate dodecahydrate, sodium mercaptobenzothiazole (50% aqueous solution), antifoaming agent, coloring agent and stabilizer. However, the cooling liquid has low thermal conductivity and poor heat exchange capability, and cannot meet the heat dissipation requirement of a cooling system under high load.
Disclosure of Invention
The invention provides a cooling liquid and a preparation method thereof in order to overcome the problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
the cooling liquid is characterized by comprising the following components in parts by mass:
80-90 parts of an antifreezing agent;
10-15 parts of a defoaming agent;
10-15 parts of a corrosion inhibitor;
1-5 parts of a pH regulator;
1-3 parts of a coloring agent;
2-4 parts of heat conduction dispersion particles;
1-3 parts of silicate;
1-3 parts of a stabilizer;
40-50 parts of water.
Compared with the traditional cooling liquid, the cooling liquid has the advantages that the heat conduction dispersing particles are added in the cooling liquid, and compared with the traditional cooling liquid, the heat conduction coefficient of the heat conduction dispersing particles is far higher than that of the liquid, so that when the heat conduction dispersing particles are dispersed in the cooling liquid, the heat conduction capability of the cooling liquid can be improved, and meanwhile, in order to improve the dispersing capability of the heat conduction dispersing particles in the cooling liquid, the hollow alumina microspheres are adopted, so that the quality is reduced; meanwhile, in order to further increase the heat conduction capacity, cellulose fibers are loaded in the hollow alumina microspheres, glyoxal is adopted to crosslink the cellulose fibers to form a crosslinked network, the cellulose fibers loaded in the hollow alumina microspheres are prevented from being separated from the microspheres, and after calcination is carried out, the cellulose fibers loaded in the hollow alumina microspheres are carbonized to form carbonized fibers with excellent heat conduction capacity and have larger specific surface area, so that the heat conduction area between the carbonized fibers and a liquid medium is increased, and the heat conduction capacity of the cooling liquid is remarkably improved.
Preferably, the antifreeze comprises one or a mixture of two of ethylene glycol and propylene glycol.
Preferably, the defoaming agent comprises one or a mixture of two of polyoxypropylene glycerol ether and polydimethylsiloxane.
Preferably, the corrosion inhibitor comprises triethanolamine.
Preferably, the pH adjuster comprises sodium hydroxide.
Preferably, the colorant comprises one or two of methyl red and organic fluorescent yellow.
Preferably, the silicate comprises one or both of sodium silicate and potassium silicate.
Preferably, the stabilizer comprises sodium aluminate.
Preferably, the thermally conductive dispersion particles include the following preparation steps:
s1: placing 2-5 parts of cellulose fiber in 150 parts of water with the weight of 120-;
s2: placing 2-5 parts of hollow alumina microspheres in 120-150 parts of cellulose fiber dispersion liquid, stirring for 20-30h, filtering and washing, placing in deionized water, adding 0.1-0.2wt% of glyoxal, performing crosslinking reaction at 40-50 ℃ for 1-3h, and filtering to prepare cellulose fiber/hollow alumina microspheres;
s3: calcining the cellulose fiber/hollow alumina microspheres at the temperature of 300-320 ℃ for 8-12h to prepare the heat-conducting dispersion particles.
When the heat-conducting dispersion particles are prepared, after a cellulose fiber dispersion liquid is prepared, hollow alumina microspheres are mixed into the cellulose fiber dispersion liquid, cellulose fibers are loaded into the hollow alumina microspheres after stirring, glyoxal accounting for 0.1-0.2wt% of the total mass is added after filtering and washing, the cellulose fibers loaded into the hollow alumina microspheres are crosslinked to obtain cellulose fibers/hollow alumina microspheres, and finally the cellulose fibers/hollow alumina microspheres are calcined to prepare the heat-conducting dispersion particles.
A preparation method of cooling liquid comprises the following preparation steps:
(1) mixing an antifreezing agent, water and a pH regulator, stirring at 40-50 ℃ for 25-30min, adding silicate, a stabilizing agent and a corrosion inhibitor, and stirring at 40-50 ℃ for 25-30min to prepare a solution A;
(2) mixing and stirring a coloring agent and water to prepare a solution B;
(3) and mixing the solution A and the solution B, adding the heat conduction dispersion particles, stirring for 20-30min, adding a defoaming agent for defoaming, and then cooling to 10-20 ℃ to prepare the cooling liquid.
Therefore, the invention has the following beneficial effects: compared with the traditional cooling liquid, the cooling liquid has the advantage that the heat conductivity coefficient of the heat-conducting dispersion particles is far higher than that of the liquid, so that the heat conductivity of the cooling liquid can be improved.
Detailed Description
The invention is further described with reference to specific embodiments.
Example 1:
the cooling liquid comprises the following components in parts by mass:
85 parts of ethylene glycol antifreezing agent;
12 parts of a polyoxypropylene glycerol ether defoaming agent;
12 parts of triethanolamine corrosion inhibitor;
3 parts of sodium hydroxide pH regulator;
2 parts of methyl red and organic fluorescent yellow coloring agent;
3 parts of heat conduction dispersion particles;
2 parts of sodium silicate and potassium silicate;
2 parts of sodium aluminate stabilizer;
45 parts of water;
the heat-conducting dispersion particles comprise the following preparation steps:
s1: placing 3 parts of cellulose fiber in 130 parts of water to prepare a cellulose fiber dispersion liquid;
s2: placing 3 parts of hollow alumina microspheres in 120-150 parts of cellulose fiber dispersion liquid, stirring for 25h, filtering and washing, placing in deionized water, adding 0.15wt% of glyoxal, carrying out crosslinking reaction at 45 ℃ for 1-3h, and filtering to prepare cellulose fiber/hollow alumina microspheres;
s3: calcining the cellulose fiber/hollow alumina microspheres at 310 ℃ for 10 hours to prepare heat-conducting dispersed particles;
the preparation method of the cooling liquid is characterized by comprising the following preparation steps of:
(1) mixing an antifreezing agent, water and a pH regulator, stirring at 45 ℃ for 28min, adding a silicate, a stabilizer and a corrosion inhibitor, and stirring at 40-50 ℃ for 27min to prepare a solution A;
(2) mixing and stirring a coloring agent and water to prepare a solution B;
(3) and mixing the solution A and the solution B, adding the heat conduction dispersion particles, stirring for 25min, adding a defoaming agent for defoaming, and then cooling to 15 ℃ to prepare the cooling liquid.
Example 2:
the cooling liquid comprises the following components in parts by mass:
80 parts of propylene glycol antifreezing agent;
10 parts of polydimethylsiloxane defoaming agent;
10 parts of triethanolamine corrosion inhibitor;
1 part of sodium hydroxide pH regulator;
1 part of methyl red and organic fluorescent yellow coloring agent;
2 parts of heat conduction dispersion particles;
1 part of sodium silicate and potassium silicate;
1 part of sodium aluminate stabilizer;
40 parts of water;
the heat-conducting dispersion particles comprise the following preparation steps:
s1: placing 2 parts of cellulose fiber in 120 parts of water to prepare cellulose fiber dispersion liquid;
s2: placing 2-5 parts of hollow alumina microspheres in 120 parts of cellulose fiber dispersion liquid, stirring for 20h, filtering and washing, placing in deionized water, adding 0.1wt% of glyoxal, performing crosslinking reaction at 40 ℃ for 1h, and filtering to prepare cellulose fiber/hollow alumina microspheres;
s3: calcining the cellulose fiber/hollow alumina microspheres at 300 ℃ for 8 hours to prepare heat-conducting dispersed particles;
the preparation method of the cooling liquid is characterized by comprising the following preparation steps of:
(1) mixing an antifreezing agent, water and a pH regulator, stirring for 30min at 40 ℃, adding a silicate, a stabilizer and a corrosion inhibitor, and stirring for 30min at 40 ℃ to prepare a solution A;
(2) mixing and stirring a coloring agent and water to prepare a solution B;
(3) and mixing the solution A and the solution B, adding the heat conduction dispersion particles, stirring for 20min, adding a defoaming agent for defoaming, and then cooling to 10 ℃ to prepare the cooling liquid.
Example 3:
the cooling liquid comprises the following components in parts by mass:
90 parts of ethylene glycol antifreeze;
15 parts of a polyoxypropylene glycerol ether defoaming agent;
15 parts of triethanolamine corrosion inhibitor;
5 parts of sodium hydroxide pH regulator;
3 parts of methyl red and organic fluorescent yellow coloring agent;
4 parts of heat conduction dispersion particles;
3 parts of sodium silicate and potassium silicate;
3 parts of sodium aluminate stabilizer;
50 parts of water;
the heat-conducting dispersion particles comprise the following preparation steps:
s1: placing 5 parts of cellulose fiber in 150 parts of water to prepare cellulose fiber dispersion liquid;
s2: placing 5 parts of hollow alumina microspheres in 150 parts of cellulose fiber dispersion liquid, stirring for 30 hours, filtering and washing, placing in deionized water, adding 0.2wt% of glyoxal, performing crosslinking reaction at 50 ℃ for 1 hour, and filtering to prepare cellulose fiber/hollow alumina microspheres;
s3: calcining the cellulose fiber/hollow alumina microspheres at 320 ℃ for 8 hours to prepare heat-conducting dispersed particles;
the preparation method of the cooling liquid is characterized by comprising the following preparation steps of:
(1) mixing an antifreezing agent, water and a pH regulator, stirring for 25min at 50 ℃, adding a silicate, a stabilizer and a corrosion inhibitor, and stirring for 25min at 50 ℃ to prepare a solution A;
(2) mixing and stirring a coloring agent and water to prepare a solution B;
(3) and mixing the solution A and the solution B, adding the heat conduction dispersion particles, stirring for 30min, adding a defoaming agent for defoaming, and then cooling to 10 ℃ to prepare the cooling liquid.
Comparative example 1:
the cooling liquid comprises the following components in parts by mass:
85 parts of ethylene glycol antifreezing agent;
12 parts of a polyoxypropylene glycerol ether defoaming agent;
12 parts of triethanolamine corrosion inhibitor;
3 parts of sodium hydroxide pH regulator;
2 parts of methyl red and organic fluorescent yellow coloring agent;
2 parts of sodium silicate and potassium silicate;
2 parts of sodium aluminate stabilizer;
45 parts of water;
the preparation method of the cooling liquid is characterized by comprising the following preparation steps of:
(1) mixing an antifreezing agent, water and a pH regulator, stirring at 45 ℃ for 28min, adding a silicate, a stabilizer and a corrosion inhibitor, and stirring at 40-50 ℃ for 27min to prepare a solution A;
(2) mixing and stirring a coloring agent and water to prepare a solution B;
(3) and mixing the solution A and the solution B, stirring for 25min, adding a defoaming agent for defoaming, and then cooling to 15 ℃ to prepare the cooling liquid.
Comparative example 2:
the cooling liquid comprises the following components in parts by mass:
85 parts of ethylene glycol antifreezing agent;
12 parts of a polyoxypropylene glycerol ether defoaming agent;
12 parts of triethanolamine corrosion inhibitor;
3 parts of sodium hydroxide pH regulator;
2 parts of methyl red and organic fluorescent yellow coloring agent;
3 parts of alumina microspheres;
2 parts of sodium silicate and potassium silicate;
2 parts of sodium aluminate stabilizer;
45 parts of water;
the preparation method of the cooling liquid is characterized by comprising the following preparation steps of:
(1) mixing an antifreezing agent, water and a pH regulator, stirring at 45 ℃ for 28min, adding a silicate, a stabilizer and a corrosion inhibitor, and stirring at 40-50 ℃ for 27min to prepare a solution A;
(2) mixing and stirring a coloring agent and water to prepare a solution B;
(3) and mixing the solution A and the solution B, adding alumina microspheres, stirring for 25min, adding a defoaming agent for defoaming, and then cooling to 15 ℃ to prepare the cooling liquid.
Comparative example 3:
the cooling liquid comprises the following components in parts by mass:
85 parts of ethylene glycol antifreezing agent;
12 parts of a polyoxypropylene glycerol ether defoaming agent;
12 parts of triethanolamine corrosion inhibitor;
3 parts of sodium hydroxide pH regulator;
2 parts of methyl red and organic fluorescent yellow coloring agent;
3 parts of heat conduction dispersion particles;
2 parts of sodium silicate and potassium silicate;
2 parts of sodium aluminate stabilizer;
45 parts of water;
the heat-conducting dispersion particles comprise the following preparation steps:
s1: placing 3 parts of cellulose fiber in 130 parts of water to prepare a cellulose fiber dispersion liquid;
s2: placing 3 parts of hollow alumina microspheres in 120-150 parts of cellulose fiber dispersion liquid, stirring for 25 hours, filtering and washing, and placing in deionized water to prepare cellulose fiber/hollow alumina microspheres;
s3: calcining the cellulose fiber/hollow alumina microspheres at 310 ℃ for 10 hours to prepare heat-conducting dispersed particles;
the preparation method of the cooling liquid is characterized by comprising the following preparation steps of:
(1) mixing an antifreezing agent, water and a pH regulator, stirring at 45 ℃ for 28min, adding a silicate, a stabilizer and a corrosion inhibitor, and stirring at 40-50 ℃ for 27min to prepare a solution A;
(2) mixing and stirring a coloring agent and water to prepare a solution B;
(3) and mixing the solution A and the solution B, adding the heat conduction dispersion particles, stirring for 25min, adding a defoaming agent for defoaming, and then cooling to 15 ℃ to prepare the cooling liquid.
Comparative example 4:
the cooling liquid comprises the following components in parts by mass:
85 parts of ethylene glycol antifreezing agent;
12 parts of a polyoxypropylene glycerol ether defoaming agent;
12 parts of triethanolamine corrosion inhibitor;
3 parts of sodium hydroxide pH regulator;
2 parts of methyl red and organic fluorescent yellow coloring agent;
3 parts of heat conduction dispersion particles;
2 parts of sodium silicate and potassium silicate;
2 parts of sodium aluminate stabilizer;
45 parts of water;
the heat-conducting dispersion particles comprise the following preparation steps:
s1: placing 3 parts of cellulose fiber in 130 parts of water to prepare a cellulose fiber dispersion liquid;
s2: placing 3 parts of hollow alumina microspheres in 120-150 parts of cellulose fiber dispersion liquid, stirring for 25h, filtering and washing, placing in deionized water, adding 0.15wt% of glyoxal, carrying out crosslinking reaction at 45 ℃ for 1-3h, and filtering to prepare cellulose fiber/hollow alumina microspheres;
s3: drying the cellulose fiber/hollow alumina microspheres to prepare heat-conducting dispersed particles;
the preparation method of the cooling liquid is characterized by comprising the following preparation steps of:
(1) mixing an antifreezing agent, water and a pH regulator, stirring at 45 ℃ for 28min, adding a silicate, a stabilizer and a corrosion inhibitor, and stirring at 40-50 ℃ for 27min to prepare a solution A;
(2) mixing and stirring a coloring agent and water to prepare a solution B;
(3) and mixing the solution A and the solution B, adding the heat conduction dispersion particles, stirring for 25min, adding a defoaming agent for defoaming, and then cooling to 15 ℃ to prepare the cooling liquid.
The examples and comparative examples were characterized for thermal conductivity at 25 ℃ and the results are shown in the following table.
Item | Coefficient of thermal conductivity |
Example 1 | 0.542 |
Example 2 | 0.531 |
Example 3 | 0.553 |
Comparative example 1 | 0.352 |
Comparative example 2 | 0.413 |
Comparative example 3 | 0.452 |
Comparative example4 | 0.398 |
As can be seen from the above data, the coolant prepared according to the present invention has excellent thermal conductivity, and comparative example 1 differs from example 1 in that no thermally conductive dispersed particles are added, and thus the thermal conductivity is very poor; the difference between the comparative example 2 and the example 1 is that the heat-conducting dispersion particles are replaced by the alumina-added microspheres, and the heat-conducting performance is improved compared with that of the comparative example 1, but is poorer than that of the example 1; the difference between the comparative example 3 and the example 1 is that no glyoxal is added, and the heat conductivity is poor; comparative example 4 is different from example 1 in that the heat conductive dispersion particles are not carbonized and thus the heat conductive performance is also poor.
Claims (6)
1. The cooling liquid is characterized by comprising the following components in parts by mass:
80-90 parts of an antifreezing agent;
10-15 parts of a defoaming agent;
10-15 parts of a corrosion inhibitor;
1-5 parts of a pH regulator;
1-3 parts of a coloring agent;
2-4 parts of heat conduction dispersion particles;
1-3 parts of silicate;
1-3 parts of a stabilizer;
40-50 parts of water;
the heat-conducting dispersion particles comprise the following preparation steps:
s1: placing 2-5 parts of cellulose fiber in 150 parts of water with the weight of 120-;
s2: placing 2-5 parts of hollow alumina microspheres in 120-150 parts of cellulose fiber dispersion liquid, stirring for 20-30h, filtering and washing, placing in deionized water, adding 0.1-0.2wt% of glyoxal, performing crosslinking reaction at 40-50 ℃ for 1-3h, and filtering to prepare cellulose fiber/hollow alumina microspheres;
s3: calcining the cellulose fiber/hollow alumina microspheres at the temperature of 300-320 ℃ for 8-12h to prepare heat-conducting dispersed particles;
the antifreezing agent comprises one or a mixture of two of ethylene glycol and propylene glycol;
the corrosion inhibitor is triethanolamine; the stabilizer is sodium aluminate.
2. The cooling liquid as claimed in claim 1, wherein the defoaming agent comprises one or a mixture of polyoxypropylene glycerol ether and polydimethylsiloxane.
3. The cooling fluid of claim 1, wherein the pH adjusting agent comprises sodium hydroxide.
4. The cooling fluid of claim 1, wherein the coloring agent comprises one or both of methyl red and organic fluorescent yellow.
5. The cooling fluid of claim 1, wherein the silicate comprises one or both of sodium silicate and potassium silicate.
6. The method for preparing the cooling liquid according to claim 1, comprising the following steps:
(1) mixing an antifreezing agent, water and a pH regulator, stirring at 40-50 ℃ for 25-30min, adding silicate, a stabilizing agent and a corrosion inhibitor, and stirring at 40-50 ℃ for 25-30min to prepare a solution A;
(2) mixing and stirring a coloring agent and water to prepare a solution B;
(3) and mixing the solution A and the solution B, adding the heat conduction dispersion particles, stirring for 20-30min, adding a defoaming agent for defoaming, and then cooling to 10-20 ℃ to prepare the cooling liquid.
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CN115058129B (en) * | 2022-05-24 | 2023-09-12 | 武汉济能纳米流体技术有限公司 | Preparation method and application of functional micro powder for engine coolant |
CN114907821B (en) * | 2022-05-30 | 2023-04-28 | 湖南车瑞科技股份有限公司 | Special cooling liquid for wind power and preparation method thereof |
CN116716087B (en) * | 2023-08-10 | 2023-11-03 | 南方电网调峰调频(广东)储能科技有限公司 | White oil-based immersion coolant for electronic components |
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