CN114806517B - Automobile anti-freezing cooling liquid and preparation method thereof - Google Patents
Automobile anti-freezing cooling liquid and preparation method thereof Download PDFInfo
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- 239000000110 cooling liquid Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 238000007710 freezing Methods 0.000 title claims abstract description 24
- -1 triazole silane compound Chemical class 0.000 claims abstract description 75
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000005260 corrosion Methods 0.000 claims abstract description 67
- 230000007797 corrosion Effects 0.000 claims abstract description 65
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000003112 inhibitor Substances 0.000 claims abstract description 33
- 239000002826 coolant Substances 0.000 claims abstract description 31
- 229910000077 silane Inorganic materials 0.000 claims abstract description 31
- GHVNFZFCNZKVNT-UHFFFAOYSA-N Decanoic acid Natural products CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229920000767 polyaniline Polymers 0.000 claims abstract description 27
- 239000002131 composite material Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 229920002197 Sodium polyaspartate Polymers 0.000 claims abstract description 18
- 229930182470 glycoside Natural products 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 16
- 229920000604 Polyethylene Glycol 200 Polymers 0.000 claims abstract description 14
- 239000008367 deionised water Substances 0.000 claims abstract description 10
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 10
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 9
- 239000003086 colorant Substances 0.000 claims abstract description 9
- 239000013530 defoamer Substances 0.000 claims abstract description 9
- 229920000570 polyether Polymers 0.000 claims abstract description 9
- GYSCBCSGKXNZRH-UHFFFAOYSA-N 1-benzothiophene-2-carboxamide Chemical compound C1=CC=C2SC(C(=O)N)=CC2=C1 GYSCBCSGKXNZRH-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 55
- 238000001816 cooling Methods 0.000 claims description 44
- 230000002528 anti-freeze Effects 0.000 claims description 35
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 32
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 30
- 238000002156 mixing Methods 0.000 claims description 29
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 claims description 10
- 229920001451 polypropylene glycol Polymers 0.000 claims description 10
- CASYTJWXPQRCFF-UHFFFAOYSA-N 2-chloroethyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)CCCl CASYTJWXPQRCFF-UHFFFAOYSA-N 0.000 claims description 8
- MCPLVIGCWWTHFH-UHFFFAOYSA-L methyl blue Chemical compound [Na+].[Na+].C1=CC(S(=O)(=O)[O-])=CC=C1NC1=CC=C(C(=C2C=CC(C=C2)=[NH+]C=2C=CC(=CC=2)S([O-])(=O)=O)C=2C=CC(NC=3C=CC(=CC=3)S([O-])(=O)=O)=CC=2)C=C1 MCPLVIGCWWTHFH-UHFFFAOYSA-L 0.000 claims description 7
- GYBMSOFSBPZKCX-UHFFFAOYSA-N sodium;ethanol;ethanolate Chemical compound [Na+].CCO.CC[O-] GYBMSOFSBPZKCX-UHFFFAOYSA-N 0.000 claims description 7
- 125000001376 1,2,4-triazolyl group Chemical group N1N=C(N=C1)* 0.000 claims description 6
- 125000005370 alkoxysilyl group Chemical group 0.000 claims description 6
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 claims description 6
- 239000012809 cooling fluid Substances 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- KLSJWNVTNUYHDU-UHFFFAOYSA-N Amitrole Chemical compound NC1=NC=NN1 KLSJWNVTNUYHDU-UHFFFAOYSA-N 0.000 claims description 4
- PZKFSRWSQOQYNR-UHFFFAOYSA-N 5-methyl-1h-1,2,4-triazole Chemical compound CC1=NC=NN1 PZKFSRWSQOQYNR-UHFFFAOYSA-N 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 claims description 2
- 229940012189 methyl orange Drugs 0.000 claims description 2
- CEQFOVLGLXCDCX-WUKNDPDISA-N methyl red Chemical compound C1=CC(N(C)C)=CC=C1\N=N\C1=CC=CC=C1C(O)=O CEQFOVLGLXCDCX-WUKNDPDISA-N 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 238000009835 boiling Methods 0.000 abstract description 10
- 230000008014 freezing Effects 0.000 abstract description 8
- 239000004033 plastic Substances 0.000 abstract description 8
- 229920003023 plastic Polymers 0.000 abstract description 8
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 7
- 239000005060 rubber Substances 0.000 abstract description 7
- 239000003566 sealing material Substances 0.000 abstract description 5
- 229910000975 Carbon steel Inorganic materials 0.000 abstract description 4
- 239000010962 carbon steel Substances 0.000 abstract description 4
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 3
- 229910000861 Mg alloy Inorganic materials 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 22
- 229910052751 metal Inorganic materials 0.000 description 19
- 239000002184 metal Substances 0.000 description 19
- 230000000694 effects Effects 0.000 description 14
- 150000002739 metals Chemical class 0.000 description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 8
- 239000000306 component Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 230000005764 inhibitory process Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 229910001092 metal group alloy Inorganic materials 0.000 description 4
- 239000005465 B01AC22 - Prasugrel Substances 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005191 phase separation Methods 0.000 description 3
- DTGLZDAWLRGWQN-UHFFFAOYSA-N prasugrel Chemical compound C1CC=2SC(OC(=O)C)=CC=2CN1C(C=1C(=CC=CC=1)F)C(=O)C1CC1 DTGLZDAWLRGWQN-UHFFFAOYSA-N 0.000 description 3
- 229960004197 prasugrel Drugs 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 150000001642 boronic acid derivatives Chemical class 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 150000002826 nitrites Chemical class 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 150000003851 azoles Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09K5/20—Antifreeze additives therefor, e.g. for radiator liquids
-
- C—CHEMISTRY; METALLURGY
- C23—COATING 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
- C23F—NON-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
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/173—Macromolecular compounds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The application discloses an automobile anti-freezing cooling liquid and a preparation method thereof, and relates to the technical field of freezing liquid. The application discloses an automobile antifreezing coolant which comprises the following raw materials in percentage by weight: 70 to 80 percent of propylene glycol, 10 to 15 percent of PEG-200, 3.5 to 4.3 percent of composite corrosion inhibitor, 0.5 to 0.8 percent of sodium polyaspartate, 0 to 0.05 percent of colorant, 0.1 to 0.2 percent of polyether defoamer and the balance of deionized water; the composite corrosion inhibitor consists of water-soluble polyaniline, triazole silane compound, decanoic acid, suberic acid and alkyl glycoside; the application also provides a preparation method of the automobile anti-freezing cooling liquid. The automobile antifreezing cooling liquid provided by the application is environment-friendly, simple in preparation method, excellent in corrosion resistance to materials such as carbon steel, aluminum alloy, magnesium alloy, copper alloy, rubber or plastic sealing materials, excellent in boiling resistance, freezing resistance and scale resistance, and long in service life, and can be stably stored for a long time.
Description
Technical Field
The application belongs to the technical field of cooling liquid, and particularly relates to an automobile anti-freezing cooling liquid and a preparation method thereof.
Background
The automobile engine is a power core component of an automobile, and a large amount of heat is generated in the energy conversion process, so that the cooling system is required to circulate to achieve the aim of cooling, and the cooling liquid is used for assisting the heat dissipation of the engine, however, in a low-temperature environment in winter, the cooling liquid is easy to solidify at a low temperature, so that the cooling system of the automobile is frozen, the existing cooling liquid is required to have a lower freezing point, and the antifreezing cooling liquid becomes a conventional index of the cooling system of the existing automobile engine.
The traditional antifreezing cooling liquid is prepared by mixing ethylene glycol and water according to a certain proportion, while the materials of an automobile cooling system are various, and mainly comprise carbon steel, aluminum alloy, magnesium alloy, copper alloy, rubber or plastic sealing materials and the like. However, foreign enterprises consider that: the traditional antifreezing cooling liquid is difficult to meet higher cooling requirements, and is easy to "boiling" at 100 ℃; when the temperature of the engine reaches more than 90 ℃, the cylinder wall starts to generate steam and bubbles, and the heat conduction capacity of water is reduced (cooling capacity) at the moment; the water is easy to generate galvanic corrosion and scale, steam, cavitation and the like under the action of electrolyte, so that the cooling system is corroded, and the service life of the automobile engine is influenced. At present, domestic and foreign enterprises are dedicated to develop anhydrous antifreezing cooling liquid, and although the anhydrous antifreezing cooling liquid can be directly used theoretically, the cost of the anhydrous antifreezing cooling liquid is high in practice, and the anhydrous cooling liquid is rarely provided for domestic and foreign vehicle enterprises, so that when the anhydrous antifreezing cooling liquid is replaced in the later maintenance process, the quality of anhydrous antifreezing cooling is influenced by residual moisture in the original old water-containing antifreezing liquid; the existing anhydrous antifreezing cooling liquid is less, the problem of blackening of aluminum color change cannot be solved, the storage stability is poor, the viscosity of the anhydrous antifreezing cooling liquid is thickened after a period of cyclic use, the cooling antirust effect is poor, the service life is short, and the cost is high.
A problem with antifreeze cooling fluids is now also the corrosion of cooling system materials, and a common approach to solving this problem is to add corrosion inhibitors to the antifreeze cooling fluid. The corrosion inhibitors commonly used in the prior art are classified into inorganic type corrosion inhibitors and organic type corrosion inhibitors. Wherein, the inorganic corrosion inhibitor mainly comprises: phosphates, chromates, molybdates, borates, nitrites and silicates, which have a good corrosion inhibition effect on metals or alloys such as carbon steel, aluminum, copper or zinc, but have a certain toxicity and have a great pollution to water bodies, and are limited to use; the molybdate has good anti-corrosion effect on metal or alloy, but has high price and high cost; the silicate compound has better corrosion inhibition effect on various metals and alloys, but the stability of the silicate compound is poor after a certain period of storage and use, gel-like substances are easy to separate out, the corrosion resistance is reduced, and the produced gel is easy to block a pipeline. The organic corrosion inhibitor mainly comprises the following components: amine, organic acid and azole compounds, but the existing organic corrosion inhibitors have unsatisfactory corrosion resistance to aluminum or aluminum alloy, and the organic substances contact with aluminum metal to cause the aluminum to change color and blacken, so that the cooling and corrosion resistance of cooling liquid are affected, and the service life of a cooling system is further affected.
Disclosure of Invention
The application aims to provide an automobile antifreezing cooling liquid, which is environment-friendly, simple in preparation method, excellent in corrosion resistance to materials such as carbon steel, aluminum alloy, magnesium alloy, copper alloy, rubber or plastic sealing materials, and also excellent in boiling resistance, antifreezing performance and antiscaling performance, can be stably stored for a long time, and is long in service life.
In order to achieve the aim of the application, the application provides an automobile anti-freezing cooling liquid, which comprises the following raw materials in percentage by weight: 70 to 80 percent of propylene glycol, 10 to 15 percent of PEG-200, 3.5 to 4.3 percent of composite corrosion inhibitor, 0.5 to 0.8 percent of sodium polyaspartate, 0 to 0.05 percent of colorant, 0.1 to 0.2 percent of polyether defoamer and the balance of deionized water.
The propylene glycol is used as the base liquid of the antifreeze coolant, and has the advantages of excellent antifreeze and anti-boiling effects, difficult volatilization and guaranteed coolant quality, and the melting point of the base liquid is minus 59 ℃ and the boiling point of the base liquid is 186-188 ℃. PEG-200 and propylene glycol are mixed in a certain proportion for use, so that the thermal stability of the antifreeze coolant can be further improved, the freezing point is lower, and the chemical stability of the antifreeze coolant is ensured.
The sodium polyaspartate is a corrosion and scale inhibitor, which is added into the application, has excellent dispersibility, can form chelates on the surfaces of various metals or alloys such as calcium, magnesium, copper, iron and the like, is attached to the surfaces of metal containers to prevent metal corrosion, can cooperate with a composite corrosion inhibitor, protects a cooling system to a greater extent, achieves a corrosion prevention effect, can inhibit scale, and inhibits the generation of solid impurities in the application.
Further, the composite corrosion inhibitor consists of water-soluble polyaniline, triazole silane compound, capric acid, suberic acid and alkyl glycoside.
The addition of the water-soluble polyaniline obviously improves the corrosion resistance to metals such as cast iron, copper, aluminum, magnesium, steel and the like, and the common electron pair contained in the central nitrogen atom of the water-soluble polyaniline can form a d-space orbit with the surface of the protected metal to form a coordination bond, so that the polyaniline can form a protective film on the surface of the metal to play a role in corrosion resistance; polyaniline can also react with metal to form compact metal oxide under the condition of containing water, thereby playing a role in corrosion prevention.
The addition of the capric acid and the suberic acid has a good effect on corrosion inhibition of aluminum alloy, and the two acids belong to weak acids and have a certain pH buffering capacity, when metal is corroded, the pH value is reduced, a slightly acidic environment is locally presented, and the capric acid or the suberic acid is reasonably adsorbed at the active point where the corrosion occurs, so that the corrosion is prevented from further occurring; when corrosion is inhibited and the local pH value is restored to a normal state, the capric acid or the suberic acid is changed into ions again to be fused into the solution, and the two acids are adsorbed by activity and do not need to form a film, so that the consumption is slow, the better corrosion inhibition effect is ensured, and the service life of the application is prolonged.
The addition of the alkyl glycoside reduces the corrosion of the antifreeze coolant to rubber and plastic parts and prolongs the service life of the cooling system.
Further, the antifreezing cooling liquid consists of the following raw materials in percentage by weight: 60 to 75 percent of propylene glycol, 10 to 15 percent of PEG-200, 0.5 to 1 percent of water-soluble polyaniline, 1 to 1.5 percent of triazole silane compound, 0.5 to 0.8 percent of capric acid, 0.3 to 0.6 percent of suberic acid, 0.7 to 0.9 percent of alkyl glycoside, 0.5 to 0.8 percent of sodium polyaspartate, 0.02 to 0.05 percent of colorant, 0.1 to 0.2 percent of polyether defoamer and the balance of deionized water.
Further, the triazole silane compound is a compound having both an alkoxysilyl group and a 1,2, 4-triazole ring in the molecule.
Further, the preparation method of the triazole silane compound comprises the following steps: adding triazole compound into ethanol, stirring uniformly, adding 30wt% sodium ethoxide ethanol solution, stirring for 40min, adding 2-chloroethyltrimethoxysilane, heating to 60-70 ℃, stirring for 3-4 h, cooling to normal temperature, filtering, and distilling the filtrate under reduced pressure.
Further, the ratio of the triazole compound to the ethanol is 2mol/L; the molar mass ratio of the triazole compound to the 2-chloroethyl trimethoxysilane is 1:1, a step of; the molar mass ratio of the triazole compound to the solute contained in the sodium ethoxide ethanol solution is 1:1.
further, the triazole compound is any one of 3-methyl-1, 2, 4-triazole or 3-amino-1, 2, 4-triazole.
The triazole silane compound is a compound containing an alkoxysilyl group and a 1,2, 4-triazole ring, is formed by the dehydroHCl reaction of the triazole compound and 2-chloroethyltrimethoxysilane, has good corrosion resistance to metals or metal alloys such as aluminum, copper, iron, zinc, tin and the like, can prevent the metals from rusting, can improve the bonding effect between the metals and sealing materials (plastic or rubber materials), can not corrode rubber or plastic, and can generate cohesive force when the metals are connected with the sealing materials, thereby improving the corrosion resistance of a cooling system. The triazole silane compound is compounded with the water-soluble polyaniline, the capric acid and the suberic acid, so that the components are mutually matched, the application has lower viscosity, lower melting point and higher boiling point, and simultaneously, the components are cooperated, so that the application has better corrosion resistance to various metals or metal alloy, plastic and other materials, solves the problem that the prior aluminum and aluminum alloy are easy to turn black, and prolongs the service life of the antifreezing cooling liquid.
Further, the colorant is any one of methyl orange, fluorescent green, methyl blue and methyl red.
Further, the polyether defoamer is any one of glycerol polyoxypropylene ether, polyoxyethylene polyoxypropylene pentaerythritol ether or polyoxyethylene polyoxypropylene amine ether.
The application also provides a preparation method of the automobile anti-freezing cooling liquid, which specifically comprises the following steps:
s1, weighing the anti-freezing cooling liquid according to the weight percentage;
s2, mixing 1/2 of propylene glycol with the composite corrosion inhibitor, heating to 90-100 ℃, stirring to form mixed liquid, and naturally cooling to room temperature;
s3, heating propylene glycol of other 1/2 to 60-75 ℃, then adding PEG-200, stirring and mixing uniformly, then sequentially adding sodium polyaspartate and a colorant, stirring for 5-10 min, cooling to room temperature, then mixing with the mixed liquid of the step S2, and stirring for 5min to obtain a mixture;
s4, adding deionized water into the mixture obtained in the step S3, uniformly mixing, adding sodium hydroxide, adjusting the pH value to 7.5-8.5, adding polyether defoamer, and uniformly stirring.
The application has the following beneficial effects:
1. the antifreezing cooling liquid disclosed by the application does not contain toxic substances such as phosphates, borates, nitrites, chromates and the like, the raw materials are environment-friendly, the pollution to water is reduced, and in the links of production, construction, application and the like, volatile organic compounds are not generated, so that the harm to human bodies and the pollution to the environment are reduced.
2. Propylene glycol and polyethylene glycol are selected as base materials of the antifreeze coolant, and the antifreeze coolant has the advantages of lower freezing point, higher boiling point, better antifreeze and cooling effects, can be used at the temperature of more than 60 ℃ below zero, has better corrosion resistance effect, prevents corrosion of nonmetallic materials such as rubber parts of the cooling system, ensures that the antifreeze coolant can be stably used for a long time, and prolongs the service life of the cooling system.
3. The application selects water-soluble polyaniline, triazole silane compound, capric acid, suberic acid and alkyl glycoside as composite corrosion inhibitor, so that the application has better corrosion inhibition effect on various metals, metal alloy, plastic and other materials, improves the anti-corrosion effect of the application, and prolongs the service life of a cooling system; the components cooperate to stabilize the pH value of the coolant, thereby prolonging the service life of the antifreeze coolant and reducing the cost.
4. The preparation method used by the application is simple, has strong operability, does not need complex equipment and has lower cost.
5. The antifreezing cooling liquid has the characteristics of low water content, no water, adoption of a composite corrosion inhibitor without inorganic salt, cooling resistance, difficult volatilization, strong corrosion resistance, scale prevention, stable cooling rate, environmental protection and the like, and can be suitable for cooling systems of various materials, and the application range is wide.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully, and it is apparent that the embodiments described are only some but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The anti-freezing cooling liquid for automobile and the preparation method thereof according to the present application will be described below with reference to specific examples.
Example 1
The preparation method of the automobile anti-freezing cooling liquid comprises the following steps:
s1, mixing 3.5kg of propylene glycol and 0.35kg of composite corrosion inhibitor, heating to 95 ℃, stirring to form mixed liquid, and naturally cooling to room temperature;
s2, heating 3.5kg of propylene glycol to 70 ℃, then adding 1.5kg of PEG-200, stirring and mixing uniformly, then sequentially adding 80g of sodium polyaspartate and 2g of methyl blue, stirring for 10min, cooling to room temperature, then mixing with the mixed liquid in the step S1, and stirring for 5min to obtain a mixture;
s3, adding 1.048kg of ionized water into the mixture in the step S3, uniformly mixing, adding sodium hydroxide, stirring to adjust the pH value to 8.0, adding 200g of glycerol polyoxypropylene ether, and uniformly stirring.
The composite corrosion inhibitor consists of 0.5kg of water-soluble polyaniline, 1.5kg of triazole silane compound, 0.5kg of decanoic acid, 0.3kg of suberic acid and 0.7kg of alkyl glycoside.
The sodium polyaspartate is selected from the group of the biological technologies of the Wuhan prasugrel.
The glycerol polyoxypropylene ether is selected from defoaming agent GP330 of new Shanghai Min Ke material.
The water-soluble polyaniline is selected from Hubei standard biological technology development limited company.
The triazole silane compound has both an alkoxysilyl group and a 1,2, 4-triazole ring in the molecule. The preparation method of the triazole silane compound comprises the following steps: adding 1mol of 3-methyl-1, 2, 4-triazole into 0.5L of ethanol, stirring uniformly, then adding 226.83g of 30wt% sodium ethoxide ethanol solution, stirring for 40min, then adding 1mol of 2-chloroethyl trimethoxysilane, heating to 70 ℃, stirring for 3h, cooling to normal temperature, filtering, and distilling the filtrate under reduced pressure.
The alkyl glycoside (APG) is selected from GREENAPG PC series of new Qingchao materials in Yangzhou.
Example 2
The preparation method of the automobile anti-freezing cooling liquid comprises the following steps:
s1, mixing 4.0kg of propylene glycol and 0.43kg of composite corrosion inhibitor, heating to 100 ℃, stirring to form mixed liquid, and naturally cooling to room temperature;
s2, heating 4.0kg of propylene glycol to 75 ℃, then adding 1.0kg of PEG-200, stirring and mixing uniformly, then sequentially adding 50g of sodium polyaspartate and 5g of methyl blue, stirring for 10min, cooling to room temperature, then mixing with the mixed liquid in the step S1, and stirring for 5min to obtain a mixture;
s3, adding 0.505kg of deionized water into the mixture in the step S3, uniformly mixing, adding sodium hydroxide, stirring to adjust the pH value to 8.0, adding 100g of polyoxyethylene polyoxypropylene pentaerythritol ether, and uniformly stirring.
The composite corrosion inhibitor consists of 1kg of water-soluble polyaniline, 1kg of triazole silane compound, 0.8kg of decanoic acid, 0.6kg of suberic acid and 0.9kg of alkyl glycoside.
The sodium polyaspartate is selected from the group of the biological technologies of the Wuhan prasugrel.
The polyoxyethylene polyoxypropylene pentaerythritol ether is selected from the group XPJ770 of Jiangsu Saxiunon Yue.
The water-soluble polyaniline is selected from Hubei standard biological technology development limited company.
The triazole silane compound has both an alkoxysilyl group and a 1,2, 4-triazole ring in the molecule. The preparation method of the triazole silane compound comprises the following steps: adding 1mol of 3-amino-1, 2, 4-triazole into 0.5L of ethanol, stirring uniformly, then adding 226.83g of 30wt% sodium ethoxide ethanol solution, stirring for 40min, then adding 1mol of 2-chloroethyl trimethoxysilane, heating to 60 ℃, stirring for 4h, cooling to normal temperature, filtering, and distilling the filtrate under reduced pressure.
The alkyl glycoside (APG) is selected from GREENAPG PC series of new Qingchao materials in Yangzhou.
Example 3
The preparation method of the automobile anti-freezing cooling liquid comprises the following steps:
s1, mixing 3.6kg of propylene glycol and 0.41kg of composite corrosion inhibitor, heating to 100 ℃, stirring to form mixed liquid, and naturally cooling to room temperature;
s2, heating 3.6kg of propylene glycol to 70 ℃, then adding 1.45kg of PEG-200, stirring and mixing uniformly, then sequentially adding 65g of sodium polyaspartate and 5g of methyl blue, stirring for 10min, cooling to room temperature, then mixing with the mixed liquid in the step S1, and stirring for 10min to obtain a mixture;
s3, adding 0.852kg of deionized water into the mixture in the step S3, uniformly mixing, adding sodium hydroxide, stirring to adjust the pH value to 8.0, adding 180g of glycerol polyoxypropylene ether, and uniformly stirring.
The composite corrosion inhibitor consists of 1kg of water-soluble polyaniline, 1.2kg of triazole silane compound, 0.7kg of decanoic acid, 0.4kg of suberic acid and 0.8kg of alkyl glycoside.
The sodium polyaspartate is selected from the group of the biological technologies of the Wuhan prasugrel.
The glycerol polyoxypropylene ether is selected from defoaming agent GP330 of new Shanghai Min Ke material.
The water-soluble polyaniline is selected from Hubei standard biological technology development limited company.
The triazole silane compound has both an alkoxysilyl group and a 1,2, 4-triazole ring in the molecule. The preparation method of the triazole silane compound comprises the following steps: adding 1mol of 3-amino-1, 2, 4-triazole into 0.5L of ethanol, stirring uniformly, then adding 226.83g of 30wt% sodium ethoxide ethanol solution, stirring for 40min, then adding 1mol of 2-chloroethyl trimethoxysilane, heating to 70 ℃, stirring for 4h, cooling to normal temperature, filtering, and distilling the filtrate under reduced pressure.
The alkyl glycoside (APG) is selected from GREENAPG PC series of new Qingchao materials in Yangzhou.
Example 4
The preparation method of the automobile anti-freezing cooling liquid comprises the following steps:
s1, mixing 3.9kg of propylene glycol and 0.36kg of composite corrosion inhibitor, heating to 100 ℃, stirring to form mixed liquid, and naturally cooling to room temperature;
s2, heating 3.9kg of propylene glycol to 70 ℃, then adding 1.28kg of PEG-200, stirring and mixing uniformly, then sequentially adding 75g of sodium polyaspartate and 3g of methyl blue, stirring for 10min, cooling to room temperature, then mixing with the mixed liquid in the step S1, and stirring for 10min to obtain a mixture;
s3, adding 0.467kg of ionized water into the mixture in the step S3, uniformly mixing, adding sodium hydroxide, stirring to adjust the pH value to 8.0, adding 150g of glycerol polyoxypropylene ether, and uniformly stirring.
The composite corrosion inhibitor consists of 0.7kg of water-soluble polyaniline, 1.4kg of triazole silane compound, 0.5kg of decanoic acid, 0.3kg of suberic acid and 0.7kg of alkyl glycoside.
The sodium polyaspartate, glycerol polyoxypropylene ether, water-soluble polyaniline, triazole silane compound and alkyl glycoside (APG) were all selected as in example 3, and specific reference is made to example 3.
Example 5
The preparation method of the automobile anti-freezing cooling liquid comprises the following steps:
s1, mixing 3.725kg of propylene glycol and 0.392kg of a composite corrosion inhibitor, heating to 100 ℃, stirring to form a mixed liquid, and naturally cooling to room temperature;
s2, heating 3.725kg of propylene glycol to 70 ℃, then adding 1.36kg of PEG-200, stirring and mixing uniformly, then sequentially adding 72g of sodium polyaspartate and 2g of methyl blue, stirring for 10min, cooling to room temperature, then mixing with the mixed liquid in the step S1, and stirring for 10min to obtain a mixture;
s3, adding 0.709kg of deionized water into the mixture in the step S3, uniformly mixing, adding sodium hydroxide, stirring to adjust the pH value to 8.0, adding 150g of glycerol polyoxypropylene ether, and uniformly stirring.
The composite corrosion inhibitor consists of 0.82kg of water-soluble polyaniline, 1.25kg of triazole silane compound, 0.65kg of decanoic acid, 0.45kg of suberic acid and 0.75kg of alkyl glycoside.
The sodium polyaspartate, glycerol polyoxypropylene ether, water-soluble polyaniline, triazole silane compound and alkyl glycoside (APG) were all selected as in example 3, and specific reference is made to example 3.
Comparative example 1
The components and preparation method of the antifreeze coolant of the comparative example were the same as in example 5, except that the antifreeze coolant of the automobile of the comparative example did not contain PEG-200, and the antifreeze coolant was replaced by propylene glycol, i.e. the total adding amount of propylene glycol was 8.81kg, and was added in two portions, each adding amount was 4.405, referring to the preparation method thereof.
Comparative example 2
The components and preparation method of the antifreeze coolant of the comparative example were the same as in example 5, except that the composite corrosion inhibitor of the automotive antifreeze coolant of the comparative example did not contain water-soluble polyaniline, and the addition amount of the triazole silane compound was 2.07kg, i.e., the water-soluble polyaniline was substituted with the triazole silane compound.
Comparative example 3
The composition and preparation method of the antifreeze coolant of the comparative example were the same as in example 5, except that the composite corrosion inhibitor of the automotive antifreeze coolant of the comparative example did not contain a triazole silane compound, and the addition amount of water-soluble polyaniline was 2.07kg, i.e., the triazole silane compound was replaced with water-soluble polyaniline.
Comparative example 4
The composition and preparation method of the antifreeze coolant of the comparative example were the same as in example 5, except that the composite corrosion inhibitor of the automotive antifreeze coolant of the comparative example did not contain a triazole silane compound and a water-soluble polyaniline, and the addition amount of capric acid and suberic acid was respectively modified to 1.47kg and 2kg.
Comparative example 5
The components and preparation method of the antifreeze coolant of the comparative example were the same as in example 5, except that the composite corrosion inhibitor of the automotive antifreeze coolant of the comparative example did not contain capric acid and suberic acid, and the addition amount of the triazole silane compound and the water-soluble polyaniline was changed to 2kg and 1.47kg, respectively.
The antifreeze shown in the embodiment 1-5 and the comparative examples 1-5 has the test of corrosion inhibition, and the test of glass ware corrosion repeatability according to SH/T0085-1991, and the test of heat transfer corrosion of cast aluminum alloy according to SH/T0620-1995, and the test result is shown in Table 1.
TABLE 1 Glassware Corrosion and cast aluminum Heat transfer test data
As can be seen from the detection results in Table 1, the composite corrosion inhibitor has excellent corrosion resistance to all metals and metal alloys, and all components are mutually cooperated, so that the corrosion resistance to the metals is better.
The antifreeze cooling fluid prepared in the above examples 1-5 is placed at 90 ℃ for 1 month, and no gel or precipitate is observed in the antifreeze cooling fluid, so that the application has excellent storage stability.
The antifreeze coolants prepared in the above examples 1-5 and comparative examples 1-5 were subjected to detection of freezing point, boiling point and heat conductivity, and were left at-50℃and 100℃for 24 hours to observe whether phase separation occurred, and the detection results are shown in Table 2 below.
Table 2 antifreeze coolant fluid test results
| Boiling point (. Degree. C.) | Freezing point (DEG C) | Thermal conductivity W/(m.K) | High temperature stability | Low temperature stability | |
| Example 1 | 210 | -69 | 0.576 | Homogeneous phase | Homogeneous phase |
| Example 2 | 216 | -72 | 0.608 | Homogeneous phase | Homogeneous phase |
| Example 3 | 204 | -74 | 0.613 | Homogeneous phase | Homogeneous phase |
| Example 4 | 213 | -72 | 0.594 | Homogeneous phase | Homogeneous phase |
| Example 5 | 220 | -75 | 0.625 | Homogeneous phase | Homogeneous phase |
| Comparative example 1 | 190 | -55 | 0.536 | Homogeneous phase | Phase separation |
| Comparative example 2 | 180 | -70 | 0.635 | Homogeneous phase | Homogeneous phase |
| Comparative example 3 | 235 | -65 | 0.538 | Phase separation | Homogeneous phase |
| Comparative example 4 | 172 | -60 | 0.524 | Homogeneous phase | Homogeneous phase |
| Comparative example 5 | 218 | -73 | 0.619 | Homogeneous phase | Homogeneous phase |
As can be seen from the detection results in Table 2, the antifreeze coolant has the advantages of lower freezing point, higher boiling point, high and low temperature resistance, high stability and high heat transfer efficiency, and is favorable for rapid cooling of a cooling system.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application.
Claims (7)
1. The automobile antifreezing cooling liquid is characterized by comprising the following raw materials in percentage by weight: 70 to 80 percent of propylene glycol, 10 to 15 percent of PEG-200, 3.5 to 4.3 percent of composite corrosion inhibitor, 0.5 to 0.8 percent of sodium polyaspartate, 0 to 0.05 percent of colorant, 0.1 to 0.2 percent of polyether defoamer and the balance of deionized water;
the composite corrosion inhibitor consists of water-soluble polyaniline, triazole silane compound, decanoic acid, suberic acid and alkyl glycoside;
the triazole silane compound is a compound which has an alkoxysilyl group and a 1,2, 4-triazole ring in a molecule; the preparation method of the triazole silane compound comprises the following steps: adding triazole compound into ethanol, stirring uniformly, adding 30wt% sodium ethoxide ethanol solution, stirring for 40min, adding 2-chloroethyltrimethoxysilane, heating to 60-70 ℃, stirring for 3-4 h, cooling to normal temperature, filtering, and distilling the filtrate under reduced pressure.
2. The automotive antifreeze coolant of claim 1, wherein the antifreeze coolant is comprised of the following materials by weight percent: 60 to 75 percent of propylene glycol, 10 to 15 percent of PEG-200, 0.5 to 1 percent of water-soluble polyaniline, 1 to 1.5 percent of triazole silane compound, 0.5 to 0.8 percent of capric acid, 0.3 to 0.6 percent of suberic acid, 0.7 to 0.9 percent of alkyl glycoside, 0.5 to 0.8 percent of sodium polyaspartate, 0.02 to 0.05 percent of colorant, 0.1 to 0.2 percent of polyether defoamer and the balance of deionized water.
3. The automotive antifreeze coolant of claim 1, wherein the ratio of triazole compound to ethanol is 2mol/L; the molar mass ratio of the triazole compound to the 2-chloroethyl trimethoxysilane is 1:1, a step of; the molar mass ratio of the triazole compound to the solute contained in the sodium ethoxide ethanol solution is 1:1.
4. the antifreeze coolant of claim 3, wherein said triazole compound is any one of 3-methyl-1, 2, 4-triazole or 3-amino-1, 2, 4-triazole.
5. The automotive antifreeze coolant of claim 1 or 2, wherein the colorant is any one of methyl orange, fluorescent green, methyl blue, methyl red.
6. The automotive antifreeze coolant according to claim 1 or 2, wherein the polyether defoamer is any one of glycerol polyoxypropylene ether, polyoxyethylene polyoxypropylene pentaerythritol ether, or polyoxyethylene polyoxypropylene amine ether.
7. The method for preparing the anti-freezing cooling fluid for the automobile according to any one of claims 1 or 2, which is characterized by comprising the following steps:
s1, weighing the anti-freezing cooling liquid according to the weight percentage;
s2, mixing 1/2 of propylene glycol with the composite corrosion inhibitor, heating to 90-100 ℃, stirring to form mixed liquid, and naturally cooling to room temperature;
s3, heating propylene glycol of other 1/2 to 60-75 ℃, then adding PEG-200, stirring and mixing uniformly, then sequentially adding sodium polyaspartate and a colorant, stirring for 5-10 min, cooling to room temperature, then mixing with the mixed liquid of the step S2, and stirring for 5min to obtain a mixture;
s4, adding deionized water into the mixture obtained in the step S3, uniformly mixing, adding sodium hydroxide, adjusting the pH value to 7.5-8.5, adding polyether defoamer, and uniformly stirring.
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