CN113278405B - Energy-saving cooling liquid and application thereof - Google Patents

Energy-saving cooling liquid and application thereof Download PDF

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CN113278405B
CN113278405B CN202110630931.XA CN202110630931A CN113278405B CN 113278405 B CN113278405 B CN 113278405B CN 202110630931 A CN202110630931 A CN 202110630931A CN 113278405 B CN113278405 B CN 113278405B
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energy
cooling liquid
weight
saving cooling
parts
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CN113278405A (en
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章立
李孟翔
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Linhao Changzhou Technology Co ltd
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Lingdu Nanjing Technology Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00Heat-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
    • C09K5/08Materials not undergoing a change of physical state when used
    • C09K5/10Liquid materials
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23FNON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/06Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly alkaline liquids

Abstract

The invention relates to the field of cooling liquid, in particular to energy-saving cooling liquid and application thereof. The invention provides an energy-saving cooling liquid, and a preparation method and application thereof. The cooling liquid comprises the following components in parts by weight: ethylene glycol, uracil, N-bromosuccinimide, a defoaming agent and mannitol. According to the preparation method provided by the invention, ethylene glycol and water are uniformly mixed, uracil, N-bromosuccinimide and mannitol are added and uniformly mixed, the pH value is adjusted to 8.8-9.2, and then a defoaming agent is added and uniformly mixed to obtain the energy-saving cooling liquid. The cooling liquid provided by the invention improves the service cycle of the product, does not contain silicate corrosion inhibitors, has strong storage stability, does not contain toxic and harmful substances such as borate, phosphate, nitrite and the like, and is environment-friendly. The preparation method of the anti-freezing cooling liquid provided by the invention is simple in process, simple, easy and rapid, and the prepared energy-saving cooling liquid is stable in quality.

Description

Energy-saving cooling liquid and application thereof
Technical Field
The invention relates to the field of cooling liquid, in particular to energy-saving cooling liquid and application thereof.
Background
The cooling liquid is mainly used for a liquid-cooled engine cooling system, and has the performances of freezing prevention in winter, boiling prevention in summer and scale prevention all the year round. The cooling liquid is formed by mixing different substances, and can be used for lowering the freezing point, efficiently exchanging heat and preventing metal corrosion. At present, cooling liquids used in the market are mainly classified into alcohols, inorganic substances, polysaccharides and the like, wherein the alcohols are used most, and most of the alcohols are water-based cooling liquids of ethylene glycol; the corrosion inhibitor in the cooling liquid mainly adopts silicate, phosphate or organic carboxylic acid, and the cooling liquid is a good choice for a cooling system of a fuel engine.
The existing glycol water-based cooling liquid is mainly produced by adopting a composite formula of inorganic salt and organic corrosion inhibitor, has natural defects in the use period and the storage stability, and has the following defects:
1. in the reaction mechanism, the inorganic salt corrosion inhibitor forms a protective film on the metal surface through a self-consumption process, so that the service life of the product is short. The general vehicles are replaced for two years, and the vehicles with high utilization rate need to be replaced for one year.
2. In terms of storage stability, deposits can occur in the formulation both in use and in storage, resulting in blockage of the engine cooling system and reduced heat transfer efficiency.
3. The addition of phosphate and borate additives to the aqueous solution of ethylene glycol has been found to provide a coolant with a very effective corrosion inhibiting effect on copper and cast iron, but with the widespread use of aluminum alloys in automotive engine cooling systems, the disadvantage of the coolant having a high corrosion on the aluminum surface is gradually apparent, and thus, the addition of silicate additives to the coolant has been found to inhibit the corrosion of the coolant on aluminum and aluminum alloys. And because the silicate is unstable, the storage stability of the cooling liquid containing the silicate is poor, precipitates are easily formed, and the inhibition of the cooling liquid on the corrosion of aluminum and aluminum alloy is influenced.
Therefore, the energy-saving cooling liquid and the application thereof have important practical significance.
Disclosure of Invention
In view of the above, the invention provides an energy-saving anti-freezing cooling liquid with good storage stability and good inhibition effect on corrosion of aluminum and aluminum alloy.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides an energy-saving cooling composition which comprises the following components in parts by weight:
Figure BDA0003103448470000021
the energy efficient cooling composition is free of one or more of borate, silicate, nitrate, and/or phosphate.
In some embodiments of the invention, the pH of the energy efficient cooling composition is from 8.8 to 9.2.
In some embodiments of the invention, the energy efficient cooling composition comprises the following components in parts by weight:
Figure BDA0003103448470000022
or
Figure BDA0003103448470000023
Or
Figure BDA0003103448470000024
Figure BDA0003103448470000031
The invention also provides application of the energy-saving cooling composition in preparation of energy-saving cooling liquid.
The invention also provides an energy-saving cooling liquid, which comprises the energy-saving cooling composition and an acceptable solvent.
In some embodiments of the present invention, the energy saving coolant comprises the following components in parts by weight:
Figure BDA0003103448470000032
the energy-saving cooling liquid does not contain one or more of borate, silicate, nitrate and/or phosphate.
In some embodiments of the invention, the pH of the energy-saving cooling liquid is 8.8 to 9.2.
The invention also provides a preparation method of the energy-saving cooling liquid, which comprises the steps of uniformly mixing ethylene glycol and water, adding uracil, N-bromosuccinimide and mannitol, uniformly mixing, adjusting the pH value to 8.8-9.2, adding a defoaming agent, and uniformly mixing to obtain the energy-saving cooling liquid.
Based on the research, the invention also provides the energy-saving cooling liquid prepared by the preparation method.
The invention also provides the application of the energy-saving cooling liquid or the energy-saving cooling liquid in device or battery cooling.
The invention provides an energy-saving cooling liquid, and a preparation method and application thereof. The cooling liquid comprises the following components in parts by weight: 115-130 parts of ethylene glycol, 0.001-0.003 part of uracils, 0.002-0.004 part of N-bromosuccinimide, 0.2-0.3 part of defoaming agents and 0.008-0.015 part of mannitol.
According to the preparation method provided by the invention, ethylene glycol and water are uniformly mixed, uracil, N-bromosuccinimide and mannitol are added and uniformly mixed, the pH value is adjusted to 8.8-9.2, and then a defoaming agent is added and uniformly mixed to obtain the energy-saving cooling liquid.
The cooling liquid provided by the invention improves the service cycle of the product, does not contain silicate corrosion inhibitors, has strong storage stability, does not contain toxic and harmful substances such as borate, phosphate, nitrite and the like, and is environment-friendly. The preparation method of the anti-freezing cooling liquid provided by the invention is simple in process, simple, easy and rapid, and the prepared energy-saving cooling liquid is stable in quality.
Detailed Description
The invention discloses an energy-saving cooling liquid and application thereof, and a person skilled in the art can realize the cooling liquid by properly improving process parameters by referring to the content. It is expressly intended that all such similar substitutes and modifications which would be obvious to one skilled in the art are deemed to be included in the invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those of ordinary skill in the art that variations and modifications in the methods and applications described herein, as well as other suitable variations and combinations, may be made to implement and use the techniques of this invention without departing from the spirit and scope of the invention.
In the energy-saving cooling liquid and the application thereof provided by the invention, the used raw materials and reagents can be purchased from the market.
The invention is further illustrated by the following examples:
example 1
The energy-saving cooling composition comprises the following components:
Figure BDA0003103448470000041
mixing ethylene glycol and water at 20 deg.C, adding uracil, N-bromosuccinimide and mannitol at 20 deg.C, adjusting pH to 8.8, adding defoaming agent, and mixing to obtain energy-saving coolant.
Example 2
The energy-saving cooling composition comprises the following components:
Figure BDA0003103448470000042
Figure BDA0003103448470000051
uniformly mixing ethylene glycol and water at 25 ℃, adding uracil, N-bromosuccinimide and mannitol, uniformly mixing at 25 ℃, adjusting the pH value to 9.2, adding a defoaming agent, and uniformly mixing to obtain the energy-saving cooling liquid.
Example 3
The energy-saving cooling composition comprises the following components:
Figure BDA0003103448470000052
mixing ethylene glycol and water at 22 deg.C, adding uracil, N-bromosuccinimide and mannitol at 22 deg.C, adjusting pH to 9.0, adding defoaming agent, and mixing to obtain energy-saving coolant.
Comparative example 1
Figure BDA0003103448470000053
Mixing ethylene glycol and water at 20 deg.C, adding uracil, N-bromosuccinimide and mannitol at 20 deg.C, adjusting pH to 8.8, adding defoaming agent, and mixing to obtain energy-saving coolant.
Comparative example 2
Figure BDA0003103448470000061
Uniformly mixing ethylene glycol and water at 25 ℃, adding uracil, N-bromosuccinimide and mannitol, uniformly mixing at 25 ℃, adjusting the pH value to 9.2, adding a defoaming agent, and uniformly mixing to obtain the energy-saving cooling liquid.
Effect example 1
According to GB29743 and SH/T0085, the cooling liquid prepared in examples 1-3 and comparative examples 1-2 is subjected to metal corrosivity detection, and the specific steps are that red copper sheets, yellow copper sheets, cast iron sheets, aluminum sheets, soldering sheets and steel sheets with the sizes of 50mm X30 mm X2 mm are respectively soaked in the antifreezing cooling liquid, air is continuously introduced at 88 ℃ for soaking for 336 hours, after the experiment is finished, the weight changes of the red copper sheets, the yellow copper sheets, the cast iron sheets, the aluminum sheets, the soldering sheets and the steel sheets are respectively measured, and the results are shown in Table 1.
TABLE 1
Figure BDA0003103448470000062
Note: the different lower case letters between the same column of data indicate significant differences (P < 0.05);
different capital letters between the same column of data indicate significant differences (P < 0.01).
As can be seen from Table 1, the cooling liquids prepared in examples 1 to 3 of the present invention have a greatly improved corrosion inhibiting effect on red copper, brass, steel, cast iron, aluminum and solder compared with the cooling liquids prepared in comparative examples 1 to 2.
Effect example 2 stability test
The cooling liquids prepared in examples 1 to 3 and comparative examples 1 to 2 were allowed to stand at 88 ℃ for 5 weeks, and then the precipitation of the cooling liquids was observed, respectively, and the results are shown in Table 2.
TABLE 2
Group of Week 1 Week 2 Week 3 Week 4 Week 5
Example 1 No precipitation No precipitation No precipitation No precipitation No precipitation
Example 2 No precipitation No precipitation No precipitation No precipitation No precipitation
Example 3 No precipitation No precipitation No precipitation No precipitation No precipitation
Comparative example 1 No precipitation No precipitation With precipitation Increased precipitation Increased precipitation
Comparative example 2 No precipitation With precipitation Increased precipitation Increased precipitation Increased precipitation
As seen from Table 2, the coolants prepared in examples 1 to 3 showed precipitation in the third week and increased gradually in comparative example 1, and the coolants prepared in comparative examples 2 showed precipitation in the 2 nd week and increased gradually in comparative example 2, as compared with the coolants prepared in comparative examples 1 to 2. The examples 1-3 still showed no precipitation after 5 weeks of storage, indicating that the present invention has better storage stability.
Effect example 3 rubber tensile test
Test piece H-NBR (hydrogenated nitrile rubber)
The temperature is 120 DEG C
Test time 500 hours
The test method comprises the following steps: test pieces of H-NBR punched out in dumbbell shapes were immersed in the coolants prepared in examples 1 to 3 and comparative examples 1 to 2, and tested at 120 ℃ for 500 hours.
The tensile strength of the test pieces before and after 500 hours of immersion was measured in accordance with JIS K6251: 2010.
From the measured value of the tensile strength, the rate of change in tensile strength was determined according to the following equation.
Figure BDA0003103448470000071
TABLE 3
Group of Tensile Strength Change Rate (%)
Example 1 1.2A
Example 2 -1.3A
Example 3 1.5A
Comparative example 1 -21.3B
Comparative example 2 -20.1B
Note: the different lower case letters between the same column of data indicate significant differences (P < 0.05);
different capital letters between the same column of data indicate significant differences (P < 0.01).
As can be seen from Table 3, the coolants provided in examples 1 to 3 significantly reduced the tendency of deterioration of tensile strength as compared with the coolants prepared in comparative examples 1 to 2.
Effect example 4 Heat transfer Corrosion test
The amount of corrosion due to heat transfer of the aluminum test piece in each test solution having the composition shown in table 2 was evaluated by the method according to ASTM D4340.
Each test solution having the composition shown in table 4 was charged into an apparatus in which an aluminum test piece and a glass cell (cell) were assembled, and the test piece was heated to 135 ℃ under a pressure of 193kPa to conduct a 168-hour test. The weight of the test piece before and after the test was measured, and the corrosion amount was calculated from the following equation.
Figure BDA0003103448470000081
The results of measuring the corrosion amounts of the coolants provided in examples 1 to 3 and the coolants prepared in comparative examples 1 to 2 are shown in Table 4.
TABLE 4
Group of Amount of Corrosion (mg/cm)2Week)
Example 1 0.03A
Example 2 0.04A
Example 3 0.03A
Comparative example 1 -0.65B
Comparative example 2 -0.74B
Note: the different lower case letters between the same column of data indicate significant differences (P < 0.05);
different capital letters between the same column of data indicate significant differences (P < 0.01).
As can be seen from Table 4, the cooling liquids provided in examples 1 to 3 have significantly improved corrosion prevention effects as compared with the cooling liquids prepared in comparative examples 1 to 2.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. An energy-saving cooling composition, characterized in that,
the energy-saving cooling composition does not contain one or more of borate, silicate, nitrate and/or phosphate, the pH value of the energy-saving cooling composition is 8.8-9.2, and the energy-saving cooling composition comprises the following components in parts by weight:
ethylene glycol 115 parts by weight
Uracil 0.003 parts by weight
0.002 weight part of N-bromosuccinimide
0.25 part by weight of defoaming agent
0.015 parts by weight of mannitol
100 parts by weight of water
Or
130 parts by weight of ethylene glycol
Uracil 0.001 part by weight
0.003 weight portion of N-bromosuccinimide
0.3 part by weight of defoaming agent
Mannitol 0.008 parts by weight
100 parts by weight of water
Or
Ethylene glycol 125 parts by weight
Uracil 0.002 part by weight
0.004 weight portion of N-bromosuccinimide
0.2 part by weight of defoaming agent
Mannitol 0.012 parts by weight
100 parts of water.
2. Use of the energy efficient cooling composition of claim 1 in the preparation of an energy efficient cooling fluid.
3. The preparation method of the energy-saving cooling liquid as claimed in claim 2, wherein the energy-saving cooling liquid is obtained by uniformly mixing ethylene glycol and water, adding uracil, N-bromosuccinimide and mannitol, uniformly mixing, adjusting the pH value to 8.8-9.2, adding a defoaming agent, and uniformly mixing.
4. The energy-saving cooling liquid prepared by the preparation method of claim 3.
5. Use of the energy efficient coolant of claim 4 in an apparatus.
6. Use of the energy efficient coolant of claim 4 for battery cooling.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101376802A (en) * 2007-08-27 2009-03-04 比亚迪股份有限公司 Anti-freezing cooling liquid and preparation thereof
CN101602936A (en) * 2009-07-24 2009-12-16 长春市永畅石化有限责任公司 A kind of low silicon content coolant liquid that is applicable to aluminum radiator of heavy-duty commercial vehicle engine
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
CN111423856A (en) * 2020-04-30 2020-07-17 盐城三阳汽车用品有限公司 Cooling liquid for low-conductivity fuel cell system and preparation method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101322919B1 (en) * 2011-09-23 2013-10-29 극동제연공업 주식회사 Compositions of Antifreezing Liquid or Cooling Liquid with Improvements in Anticorrosion of Cavitation Erosion and Crevice
JP6570217B2 (en) * 2014-03-31 2019-09-04 日産自動車株式会社 Coolant
CN109762642B (en) * 2018-12-29 2021-12-07 中国船舶重工集团公司第七一八研究所 Low-conductivity cooling liquid and preparation method thereof
CN112574721A (en) * 2020-11-19 2021-03-30 江苏艾德露环保科技有限公司 Multi-effect environment-friendly glycol type automobile cooling liquid and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101376802A (en) * 2007-08-27 2009-03-04 比亚迪股份有限公司 Anti-freezing cooling liquid and preparation thereof
CN101602936A (en) * 2009-07-24 2009-12-16 长春市永畅石化有限责任公司 A kind of low silicon content coolant liquid that is applicable to aluminum radiator of heavy-duty commercial vehicle engine
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
CN111423856A (en) * 2020-04-30 2020-07-17 盐城三阳汽车用品有限公司 Cooling liquid for low-conductivity fuel cell system and preparation method thereof

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Patentee after: Linhao (Changzhou) Technology Co.,Ltd.

Address before: 210028 No. 18, Yinchun Road, science and technology R & D base, Maigaoqiao Pioneer Park, Qixia District, Nanjing City, Jiangsu Province - h1596

Patentee before: Lingdu (Nanjing) Technology Co.,Ltd.