CN113278403A - Hydrogen power fuel cell cooling liquid containing nano boron nitride and preparation method thereof - Google Patents
Hydrogen power fuel cell cooling liquid containing nano boron nitride and preparation method thereof Download PDFInfo
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- CN113278403A CN113278403A CN202110420513.8A CN202110420513A CN113278403A CN 113278403 A CN113278403 A CN 113278403A CN 202110420513 A CN202110420513 A CN 202110420513A CN 113278403 A CN113278403 A CN 113278403A
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
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- C09K5/10—Liquid materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
A hydrogen power fuel cell cooling liquid containing nanometer boron nitride and a preparation method thereof relate to the field of fuel cells; the composition comprises the following components in parts by weight: 10-60 parts of an antifreezing agent; 0.005-0.05 part of 8-hydroxyquinoline; 0.05-0.2 parts of azole corrosion inhibitor; 0.01-0.05 part of 2, 4-dihydroxypyrimidine; 0.001-0.01 part of p-nitrophenol; 0.001-0.01 parts of triethyl phosphate; 0.0001-0.001 part of nano boron nitride; 0.001-0.01 part of a dispersant; 30-90 parts of water. The invention adopts the macromolecular organic matter as the corrosion inhibitor, ensures that the cooling liquid has excellent metal corrosion prevention effect and long-acting extremely low conductivity by reasonably allocating the components and the content among the components, can improve the comprehensive performance of the cooling liquid in all aspects, has stable chemical property, has the characteristics of freezing prevention, boiling prevention, corrosion prevention and scale prevention, and has long service life.
Description
Technical Field
The invention belongs to the field of fuel cells, and particularly relates to a hydrogen power fuel cell cooling liquid containing nano boron nitride and a preparation method thereof.
Background
The popularization effect of the Chinese new energy automobile is remarkable, the new energy automobile has various subdivided types, and the pure electric automobile and the plug-in hybrid electric automobile are mainly used at present. Meanwhile, hydrogen energy vehicles are pursuing. At present, not only the research and development of hydrogen fuel cell passenger vehicles are broken through, but also large-scale hydrogen fuel cell commercial vehicles are continuously on line, according to prediction, the global market scale of fuel cell vehicles in 2030 will exceed 198 million vehicles, the market growth potential is huge, and according to data in the energy-saving and new energy vehicle technical roadmap published by 2016, 10, 26 days of the Chinese automobile engineering society, the scale of Chinese fuel cell vehicles in 2030 will reach million vehicles. With the support of governments of various countries on the hydrogen fuel cell automobile industry and the breakthrough of key technologies, the fuel cell automobile industry will be exposed to explosive growth in the coming years.
The hydrogen energy fuel cell is the core of the hydrogen energy automobile, the hydrogen fuel cell does not involve combustion in the working process, has no mechanical loss and high energy conversion rate, the products are only electricity, heat and water, the problem of air pollution generated in the using process of the automobile can be effectively solved, the driving range is long, the running is stable, and the noise is low. Is called as the ultimate environment-friendly engine. The electrical efficiency of a fuel cell is typically 50%, and the large amount of heat generated must be removed in time by the coolant, which would otherwise affect the electrochemical reaction rate and affect the life of the fuel cell. The voltage platform of the whole fuel cell system is hundreds of volts, and the conductivity of the cooling liquid is an important factor influencing the insulation of the whole system.
The working characteristics of the fuel cell require that the cooling liquid not only resists high temperature and low temperature, but also has the characteristics of protecting various metal and non-metal materials of a cooling system and preventing corrosion, leakage and the like, and also has the characteristics of low electrical conductivity and good thermal conductivity. This puts high demands on the cooling liquid. The hydrogen fuel cell coolant products on the current market are uneven, and the following problems mainly exist:
1. the electrical conductivity is high, and the cooling liquid with high electrical conductivity is used in a hydrogen fuel cell cooling system, so that electric shock danger can be caused by electric leakage;
2. the heat conductivity is poor, and a large amount of heat generated by the fuel cell in the working process can not be quickly discharged, so that the temperature of the fuel cell is rapidly increased, and the service life of the fuel cell is influenced when the fuel cell works at a higher temperature for a long time;
3. the metal corrosion inhibition effect is not good, and the inhibition effect on the corrosion of multiple metals is not good due to the unreasonable compounding and dosage of the additive.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the purposes of the invention is to provide a hydrogen power fuel cell cooling liquid containing nano boron nitride, which has stable and high chemical properties, low electrical conductivity and good heat conduction effect, can effectively protect the fuel cell, improve the heat dissipation effect of a cooling system and improve the working efficiency of the fuel cell.
The invention also aims to provide a preparation method of the hydrogen power fuel cell cooling liquid containing the nano boron nitride.
One of the purposes of the invention is realized by adopting the following technical scheme:
the hydrogen power fuel cell cooling liquid containing nano boron nitride comprises the following components in parts by weight:
further, the composition comprises the following components in parts by weight:
further, the composition comprises the following components in parts by weight:
40 parts of an antifreezing agent, 0.01 part of 8-hydroxyquinoline, 0.08 part of azole corrosion inhibitor, 0.02 part of 2, 4-dihydroxypyrimidine, 0.002 part of p-nitrophenol, 0.003 part of triethyl phosphate, 0.0002 part of nano boron nitride, 0.002 part of a dispersing agent and 59.88 parts of water; or the like, or, alternatively,
50 parts of an antifreezing agent, 0.015 part of 8-hydroxyquinoline, 0.1 part of azole corrosion inhibitor, 0.015 part of 2, 4-dihydroxypyrimidine, 0.003 part of p-nitrophenol, 0.002 part of triethyl phosphate, 0.0008 part of nano boron nitride, 0.008 part of a dispersing agent and 49.86 parts of water; or the like, or, alternatively,
60 parts of an antifreezing agent, 0.02 part of 8-hydroxyquinoline, 0.06 part of azole corrosion inhibitor, 0.03 part of 2, 4-dihydroxypyrimidine, 0.005 part of p-nitrophenol, 0.0015 part of triethyl phosphate, 0.0005 part of nano boron nitride, 0.005 part of a dispersing agent and 39.88 parts of water.
Further, the antifreezing agent is at least one of ethylene glycol, 1, 2-propylene glycol and 1, 3-propylene glycol.
Further, the azole corrosion inhibitor is at least one of 5-nitrobenzotriazole, 5-carboxyl benzotriazole, benzotriazole and methyl benzotriazole.
Further, the particle size of the nanometer boron nitride is 10-60 nm.
Further, the dispersant is at least one of ethylene glycol, polyethylene glycol, propylene glycol, a nonionic siloxane coupling agent and a high molecular copolymer hyper-dispersant.
Furthermore, the water is ultrapure water, and the conductivity is less than or equal to 0.1 us/cm.
The second purpose of the invention is realized by adopting the following technical scheme:
the preparation method of the hydrogen power fuel cell cooling liquid containing nano boron nitride comprises the following steps:
1) putting an antifreezing agent, 8-hydroxyquinoline, an azole corrosion inhibitor, 2, 4-dihydroxypyrimidine, p-nitrophenol, triethyl phosphate and water into a reaction kettle according to a formula amount, and stirring for a first preset time;
2) mixing nano boron nitride with a dispersant, and performing ball milling modification;
3) adding the modified nano boron nitride into the reaction kettle in the step 1), and stirring for a second preset time to obtain a mixture;
4) subjecting the mixture to ultrasonic oscillation;
5) and centrifuging the mixture subjected to ultrasonic oscillation by using a centrifuge, filtering and preparing the mixture into the hydrogen power fuel cell cooling liquid.
Further, in the step 1), the first preset time is 15-60 min, and the rotating speed of the reaction kettle is 400-500 r/min;
in the step 2), the ball milling time is 300-360 min, and the rotating speed is 150-200 r/min;
in the step 3), the second preset time is 2-20 min, and the rotating speed of the reaction kettle is 400-500 r/min;
in the step 4), the ultrasonic oscillation time is 40-60 min, the ultrasonic power is 400-600W, and the ultrasonic temperature is 20-40 ℃;
in the step 5), the rotating speed of a centrifugal machine is 5000-6000 r/min, and the centrifugal time is 3-5 min.
Compared with the prior art, the invention has the beneficial effects that:
the hydrogen power fuel cell cooling liquid containing nano boron nitride disclosed by the invention adopts a high-molecular organic matter as a corrosion inhibitor, does not contain inorganic salt, has excellent metal corrosion prevention effect under the synergistic action of the components by reasonably configuring the content of the components and the content of the components, has long-acting and extremely low conductivity, can improve the comprehensive performance of the cooling liquid in all aspects, can control the conductivity to be below 1 mu s/cm, is stable in chemical property, difficult to deteriorate, good in storage stability, has the characteristics of freezing prevention, boiling prevention, corrosion prevention and scale prevention, and is long in service life. In addition, nanometer boron nitride is added into the cooling liquid, and because the nanometer particles mutually collide to transfer energy, the heat dissipation speed of the cooling liquid can be greatly improved, so that the cooling liquid has higher heat conductivity coefficient and better heat dissipation effect, the battery is effectively prevented from being overheated, the fuel battery is protected, the working efficiency of the fuel battery is improved, and the safe driving of the vehicle is guaranteed.
The invention comprises heterocyclic organic matters such as 8-hydroxyquinoline, 2, 4-dihydroxypyrimidine, p-nitrophenol and the like, so that a chelate structure is formed on the interface of a metal part and a cooling liquid, the chelate has a polydentate ligand bonding structure, the stability is high, and the increase of the conductivity caused by the entry of metal ions into the cooling liquid is avoided; meanwhile, the non-ionic corrosion inhibitor triethyl phosphate is added, so that metal corrosion can be effectively prevented, and the cooling liquid can maintain low conductivity for a long time.
The preparation method of the hydrogen power fuel cell cooling liquid containing the nano boron nitride can be used for mass production, the production process is simple, and the prepared cooling liquid has stable and high chemical property, low electrical conductivity and good heat conduction effect.
Detailed Description
The present invention is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
Example 1
A hydrogen power fuel cell cooling liquid containing nano boron nitride comprises the following components in parts by weight:
40.00 parts of ethylene glycol, 0.01 part of 8-hydroxyquinoline, 0.03 part of 5-nitrobenzotriazole, 0.05 part of benzotriazole, 0.02 part of 2, 4-dihydroxypyrimidine, 0.002 part of p-nitrophenol, 0.003 part of triethyl phosphate, 0.0002 part of nano boron nitride, 0.002 part of polyethylene glycol and 59.88 parts of ultrapure water.
The preparation method of the hydrogen power fuel cell cooling liquid containing nano boron nitride comprises the following steps:
1) the stirring speed is increased to 500r/min, under the condition of normal temperature reaction, 40.00 parts of ethylene glycol, 0.01 part of 8-hydroxyquinoline, 0.03 part of 5-nitrobenzotriazole, 0.05 part of benzotriazol, 0.02 part of 2, 4-dihydroxypyrimidine, 0.002 part of p-nitrophenol, 0.003 part of triethyl phosphate and 59.88 parts of ultrapure water are added into a reaction kettle, and the mixture is stirred for 30min until the mixture is uniformly mixed;
2) adding 0.0002 part of nano boron nitride and 0.002 part of polyethylene glycol into a ball mill, mixing, adjusting the rotation speed of the ball mill to 150r/min, and carrying out ball milling for 300 min;
3) adding the modified nano boron nitride into a reaction kettle, and stirring for 15 min;
4) carrying out ultrasonic oscillation on the obtained mixture for 40min at the temperature of 30 ℃ and the ultrasonic power of 400W;
5) and centrifuging the obtained mixture by using a centrifuge at the rotating speed of 5000r/min for 3min, and filtering to remove larger nano particles to obtain the hydrogen power fuel cell cooling liquid containing the nano boron nitride.
The hydrogen power fuel cell cooling liquid containing the nano boron nitride is subjected to stability, freezing point, boiling point, conductivity and glassware corrosion tests, and the test results are shown in table 1.
TABLE 1
Wherein, the stability adopts the appearance of the product observed after standing for 15 days at normal temperature, and whether the phenomena of layering and precipitation exist or not is observed. The freezing point test was carried out according to the SH/T0090 protocol. The boiling point test was carried out in accordance with the SH/T0089 protocol. The conductivity is tested by a conductivity tester, and the heat conductivity coefficient improvement rate is measured by a heat conductivity tester at 88 ℃ on samples of the hydrogen power fuel cell coolant containing nano boron nitride and the hydrogen power fuel coolant (other components and the proportion thereof are the same) not containing nano boron nitride and the heat conductivity coefficient improvement rate is calculated. The glassware corrosion test is characterized in that the material and the size of a test piece are referenced to SH/T0085, red copper and cast aluminum are combined into one group, brass and steel are combined into one group to form two groups of test piece bundles, the test piece bundles are immersed in a 600-800ml hydrogen power fuel cell nanometer cooling liquid sample, the test is carried out for 250 hours at the temperature of 80 ℃, the test is carried out before and after the test, and the mass change of the test piece is calculated.
As can be seen from table 1, the hydrogen power fuel cell coolant containing nano boron nitride prepared in this example has low electrical conductivity and high thermal conductivity, and can prevent corrosion of brass, red copper, steel and cast aluminum. The protective agent has excellent protective performance, can be used for preventing scale from being generated and effectively protecting the safety of the cooling system by coping with various pitting, cavitation and erosion in the cooling system.
Example 2
A hydrogen power fuel cell cooling liquid containing nano boron nitride comprises the following components in parts by weight:
50.00 parts of 1, 3-propylene glycol, 0.015 part of 8-hydroxyquinoline, 0.05 part of 5-carboxyl benzotriazole, 0.05 part of methyl benzotriazole, 0.015 part of 2, 4-dihydroxypyrimidine, 0.003 part of p-nitrophenol, 0.002 part of triethyl phosphate, 0.0008 part of nano boron nitride, 0.008 part of nonionic siloxane coupling agent and 49.86 parts of ultrapure water.
The preparation method of the hydrogen power fuel cell cooling liquid containing nano boron nitride comprises the following steps:
1) the stirring speed is increased to 400r/min, 50.00 parts of 1, 3-propylene glycol, 0.015 part of 8-hydroxyquinoline, 0.05 part of 5-carboxyl benzotriazole, 0.05 part of methyl benzotriazole, 0.015 part of 2, 4-dihydroxypyrimidine, 0.003 part of p-nitrophenol, 0.002 part of triethyl phosphate and 49.86 parts of ultrapure water are added into a reaction kettle under the condition of normal temperature reaction, and the mixture is stirred for 40min to be uniformly mixed;
2) adding 0.0008 part of nano boron nitride and 0.008 part of nonionic siloxane coupling agent into a ball mill, mixing, adjusting the rotation speed of the ball mill to 180r/min, and carrying out ball milling for 320 min;
3) adding the modified nano boron nitride into a reaction kettle, and stirring for 10 min;
4) carrying out ultrasonic oscillation on the obtained mixture for 45min at the temperature of 35 ℃ and the ultrasonic power of 450W;
5) and centrifuging the obtained mixture by using a centrifuge at the rotation speed of 5500r/min for 4min, and filtering to remove larger nano particles to obtain the hydrogen power fuel cell cooling liquid containing the nano boron nitride.
The hydrogen power fuel cell cooling liquid containing the nano boron nitride is subjected to stability, freezing point, boiling point, conductivity and glassware corrosion tests, and the test results are shown in table 2.
TABLE 2
Wherein, the stability adopts the appearance of the product observed after standing for 15 days at normal temperature, and whether the phenomena of layering and precipitation exist or not is observed. The freezing point test was carried out according to the SH/T0090 protocol. The boiling point test was carried out in accordance with the SH/T0089 protocol. The conductivity is tested by a conductivity tester, and the heat conductivity coefficient improvement rate is measured by a heat conductivity tester at 88 ℃ on samples of the hydrogen power fuel cell coolant containing nano boron nitride and the hydrogen power fuel coolant (other components and the proportion thereof are the same) not containing nano boron nitride and the heat conductivity coefficient improvement rate is calculated. The glassware corrosion test is characterized in that the material and the size of a test piece are referenced to SH/T0085, red copper and cast aluminum are combined into one group, brass and steel are combined into one group to form two groups of test piece bundles, the test piece bundles are immersed in a 600-800ml hydrogen power fuel cell nanometer cooling liquid sample, the test is carried out for 250 hours at the temperature of 80 ℃, the test is carried out before and after the test, and the mass change of the test piece is calculated.
As can be seen from table 2, the hydrogen power fuel cell coolant containing nano boron nitride prepared in this example has low electrical conductivity and high thermal conductivity, and can prevent corrosion of brass, red copper, steel and cast aluminum. The protective agent has excellent protective performance, can be used for preventing scale from being generated and effectively protecting the safety of the cooling system by coping with various pitting, cavitation and erosion in the cooling system.
Example 3
A hydrogen power fuel cell cooling liquid containing nano boron nitride comprises the following components in parts by weight: 60.00 parts of 1, 2-propylene glycol, 0.02 part of 8-hydroxyquinoline, 0.03 part of benzotriazole, 0.03 part of methylbenzotriazole, 0.03 part of 2, 4-dihydroxypyrimidine, 0.005 part of p-nitrophenol, 0.0015 part of triethyl phosphate, 0.0005 part of nano boron nitride, 0.005 part of ethylene glycol and 39.88 parts of water.
The preparation method of the hydrogen power fuel cell cooling liquid containing nano boron nitride comprises the following steps:
1) the stirring speed is increased to 450r/min, under the condition of normal temperature reaction, 60.00 parts of 1, 2-propylene glycol, 0.02 part of 8-hydroxyquinoline, 0.03 part of benzotriazole, 0.03 part of methylbenzotriazole, 0.03 part of 2, 4-dihydroxypyrimidine, 0.005 part of p-nitrophenol, 0.0015 part of triethyl phosphate and 39.88 parts of ultrapure water are added into a reaction kettle, and the mixture is stirred for 35min until the mixture is uniformly mixed;
2) adding 0.0005 part of nano boron nitride and 0.005 part of ethylene glycol into a ball mill, mixing, adjusting the rotation speed of the ball mill to 200r/min, and carrying out ball milling for 340 min;
3) adding the modified nano boron nitride into a reaction kettle, and stirring for 20 min;
4) carrying out ultrasonic oscillation on the obtained mixture for 60min at the temperature of 40 ℃ and the ultrasonic power of 500W;
5) and centrifuging the obtained mixture by using a centrifuge at the rotating speed of 6000r/min for 3min, and filtering to remove larger nano particles to obtain the hydrogen power fuel cell cooling liquid containing the nano boron nitride.
The hydrogen power fuel cell cooling liquid containing the nano boron nitride is subjected to stability, freezing point, boiling point, conductivity and glassware corrosion tests, and the test results are shown in table 3.
TABLE 3
Wherein, the stability adopts the appearance of the product observed after standing for 15 days at normal temperature, and whether the phenomena of layering and precipitation exist or not is observed. The freezing point test was carried out according to the SH/T0090 protocol. The boiling point test was carried out in accordance with the SH/T0089 protocol. The conductivity is tested by a conductivity tester, and the heat conductivity coefficient improvement rate is measured by a heat conductivity tester at 88 ℃ on samples of the hydrogen power fuel cell coolant containing nano boron nitride and the hydrogen power fuel coolant (other components and the proportion thereof are the same) not containing nano boron nitride and the heat conductivity coefficient improvement rate is calculated. The glassware corrosion test is characterized in that the material and the size of a test piece are referenced to SH/T0085, red copper and cast aluminum are combined into one group, brass and steel are combined into one group to form two groups of test piece bundles, the test piece bundles are immersed in a 600-800ml hydrogen power fuel cell nanometer cooling liquid sample, the test is carried out for 250 hours at the temperature of 80 ℃, the test is carried out before and after the test, and the mass change of the test piece is calculated.
As can be seen from table 3, the coolant for hydrogen-powered fuel cells of nano boron nitride prepared in this example has low electrical conductivity and high thermal conductivity, and can prevent corrosion of brass, red copper, steel and cast aluminum. The protective agent has excellent protective performance, can be used for preventing scale from being generated and effectively protecting the safety of the cooling system by coping with various pitting, cavitation and erosion in the cooling system.
From the examples 1 to 3, it can be seen that the antifreeze solution with different freezing points and boiling points is prepared by changing the addition amount of the antifreeze agent according to the national standard GB29743, so as to meet the requirement of different areas for the antifreeze solution in winter, and the electrical conductivity, the thermal conductivity and the stability of the hydrogen power fuel cell coolant all meet the standards.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. The cooling liquid containing the nano boron nitride for the hydrogen power fuel cell is characterized by comprising the following components in parts by weight:
2. the cooling liquid for the hydrogen power fuel cell containing the nano boron nitride as claimed in claim 1, which comprises the following components in parts by weight:
3. the cooling liquid for the hydrogen power fuel cell containing the nano boron nitride as claimed in claim 1, which comprises the following components in parts by weight:
40 parts of an antifreezing agent, 0.01 part of 8-hydroxyquinoline, 0.08 part of azole corrosion inhibitor, 0.02 part of 2, 4-dihydroxypyrimidine, 0.002 part of p-nitrophenol, 0.003 part of triethyl phosphate, 0.0002 part of nano boron nitride, 0.002 part of a dispersing agent and 59.88 parts of water; or the like, or, alternatively,
50 parts of an antifreezing agent, 0.015 part of 8-hydroxyquinoline, 0.1 part of azole corrosion inhibitor, 0.015 part of 2, 4-dihydroxypyrimidine, 0.003 part of p-nitrophenol, 0.002 part of triethyl phosphate, 0.0008 part of nano boron nitride, 0.008 part of a dispersing agent and 49.86 parts of water; or the like, or, alternatively,
60 parts of an antifreezing agent, 0.02 part of 8-hydroxyquinoline, 0.06 part of azole corrosion inhibitor, 0.03 part of 2, 4-dihydroxypyrimidine, 0.005 part of p-nitrophenol, 0.0015 part of triethyl phosphate, 0.0005 part of nano boron nitride, 0.005 part of a dispersing agent and 39.88 parts of water.
4. The coolant for hydrogen-powered fuel cells containing nano boron nitride as claimed in any one of claims 1 to 3, wherein: the antifreezing agent is at least one of ethylene glycol, 1, 2-propylene glycol and 1, 3-propylene glycol.
5. The coolant for hydrogen-powered fuel cells containing nano boron nitride as claimed in any one of claims 1 to 3, wherein: the azole corrosion inhibitor is at least one of 5-nitrobenzotriazole, 5-carboxyl benzotriazole, benzotriazole and methylbenzotriazole.
6. The coolant for hydrogen-powered fuel cells containing nano boron nitride as claimed in any one of claims 1 to 3, wherein: the particle size of the nanometer boron nitride is 10-60 nm.
7. The coolant for hydrogen-powered fuel cells containing nano boron nitride as claimed in any one of claims 1 to 3, wherein: the dispersant is at least one of ethylene glycol, polyethylene glycol, propylene glycol, a nonionic siloxane coupling agent and a high molecular copolymer hyperdispersant.
8. The coolant for hydrogen-powered fuel cells containing nano boron nitride as claimed in any one of claims 1 to 3, wherein: the water is ultrapure water, and the conductivity is less than or equal to 0.1 us/cm.
9. A method for preparing the cooling liquid containing the nano boron nitride for the hydrogen power fuel cell according to any one of claims 1 to 8, which is characterized by comprising the following steps:
1) putting an antifreezing agent, 8-hydroxyquinoline, an azole corrosion inhibitor, 2, 4-dihydroxypyrimidine, p-nitrophenol, triethyl phosphate and water into a reaction kettle according to a formula amount, and stirring for a first preset time;
2) mixing nano boron nitride with a dispersant, and performing ball milling modification;
3) adding the modified nano boron nitride into the reaction kettle in the step 1), and stirring for a second preset time to obtain a mixture;
4) subjecting the mixture to ultrasonic oscillation;
5) and centrifuging the mixture subjected to ultrasonic oscillation by using a centrifuge, filtering and preparing the mixture into the hydrogen power fuel cell cooling liquid.
10. The method of claim 9, wherein the nano boron nitride-containing hydrogen-powered fuel cell coolant is prepared by:
in the step 1), the first preset time is 15-60 min, and the rotating speed of the reaction kettle is 400-500 r/min;
in the step 2), the ball milling time is 300-360 min, and the rotating speed is 150-200 r/min;
in the step 3), the second preset time is 2-20 min, and the rotating speed of the reaction kettle is 400-500 r/min;
in the step 4), the ultrasonic oscillation time is 40-60 min, the ultrasonic power is 400-600W, and the ultrasonic temperature is 20-40 ℃;
in the step 5), the rotating speed of a centrifugal machine is 5000-6000 r/min, and the centrifugal time is 3-5 min.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103045180A (en) * | 2012-12-26 | 2013-04-17 | 青岛科技大学 | Low-conductivity nanofluid and preparation method thereof |
| CN108102616A (en) * | 2017-12-22 | 2018-06-01 | 扬州中德汽车零部件有限公司 | Low conductivity super long effective organic type fuel cell anti-freeze cooling liquid and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045180A (en) * | 2012-12-26 | 2013-04-17 | 青岛科技大学 | Low-conductivity nanofluid and preparation method thereof |
| CN108102616A (en) * | 2017-12-22 | 2018-06-01 | 扬州中德汽车零部件有限公司 | Low conductivity super long effective organic type fuel cell anti-freeze cooling liquid and preparation method thereof |
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