CN113151831A - Preparation method and application of organic carboxylic acid corrosion inhibition additive - Google Patents
Preparation method and application of organic carboxylic acid corrosion inhibition additive Download PDFInfo
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- CN113151831A CN113151831A CN202110440313.9A CN202110440313A CN113151831A CN 113151831 A CN113151831 A CN 113151831A CN 202110440313 A CN202110440313 A CN 202110440313A CN 113151831 A CN113151831 A CN 113151831A
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- 238000005260 corrosion Methods 0.000 title claims abstract description 81
- 230000007797 corrosion Effects 0.000 title claims abstract description 80
- 239000000654 additive Substances 0.000 title claims abstract description 55
- 230000000996 additive effect Effects 0.000 title claims abstract description 53
- 150000001732 carboxylic acid derivatives Chemical class 0.000 title claims abstract description 49
- 230000005764 inhibitory process Effects 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 45
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000003756 stirring Methods 0.000 claims abstract description 35
- 239000011259 mixed solution Substances 0.000 claims abstract description 33
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000001361 adipic acid Substances 0.000 claims abstract description 21
- 235000011037 adipic acid Nutrition 0.000 claims abstract description 21
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims abstract description 21
- 235000010234 sodium benzoate Nutrition 0.000 claims abstract description 21
- 239000004299 sodium benzoate Substances 0.000 claims abstract description 21
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000110 cooling liquid Substances 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 230000003137 locomotive effect Effects 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 150000003627 tricarboxylic acid derivatives Chemical class 0.000 claims abstract 5
- 239000002826 coolant Substances 0.000 claims description 7
- 230000002401 inhibitory effect Effects 0.000 claims description 7
- 238000007865 diluting Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003112 inhibitor Substances 0.000 description 19
- 150000007524 organic acids Chemical class 0.000 description 12
- 150000003628 tricarboxylic acids Chemical class 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910017053 inorganic salt Inorganic materials 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005536 corrosion prevention Methods 0.000 description 3
- 238000009776 industrial production Methods 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000203 mixture Substances 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
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
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- 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
- C23F11/14—Nitrogen-containing compounds
- C23F11/149—Heterocyclic compounds containing nitrogen as hetero atom
-
- 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
- C23F11/12—Oxygen-containing compounds
- C23F11/124—Carboxylic acids
-
- 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
- C23F11/12—Oxygen-containing compounds
- C23F11/124—Carboxylic acids
- C23F11/126—Aliphatic acids
-
- 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
- C23F11/18—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 inorganic inhibitors
Abstract
The invention discloses a preparation method and application of an organic carboxylic acid corrosion inhibition additive, which comprises the following steps: firstly, adding water into a reaction kettle, then adding the tricarboxylic acid into the reaction kettle, and stirring and dissolving the tricarboxylic acid; adding potassium hydroxide into the mixed solution, stirring and dissolving; heating the mixed solution, adding adipic acid, stirring and dissolving uniformly, cooling to room temperature, adding sodium benzoate, and stirring uniformly; and finally, adding sebacic acid and methylbenzotriazole into the mixed solution, stirring and mixing to obtain uniform and transparent liquid, wherein the organic carboxylic acid corrosion inhibition additive is applied to preparation of the diesel locomotive cooling liquid. The preparation method and the application of the organic carboxylic acid corrosion inhibition additive have the advantages of simple process, uniform components, low equipment requirement, low cost, convenience in use, good stability, obvious improvement of comprehensive anti-corrosion effect on metal, good stability, slow consumption, long service life, environmental friendliness and safety.
Description
Technical Field
The invention relates to the technical field of engine cooling liquid, in particular to a preparation method and application of an organic carboxylic acid corrosion inhibition additive.
Background
The engine coolant is an indispensable component for maintaining the normal operation and running of the engine. The cooling liquid is a heat transfer medium of an engine cooling system and plays roles of cooling, corrosion prevention, scale prevention, freezing prevention and the like. The coolant is generally composed of water, antifreeze, corrosion inhibitor, scale inhibitor, colorant, defoamer, and the like. According to the composition of the corrosion inhibitor, the engine coolant can be divided into an inorganic coolant mainly comprising an inorganic salt corrosion inhibitor and an organic coolant mainly comprising an organic acid corrosion inhibitor; at present, inorganic cooling liquid is mostly used in China, and the mainly applied inorganic salt corrosion inhibitors comprise silicate, borate, molybdate, phosphate and the like. The inorganic salt corrosion inhibitor is mainly used for passivating the surface of metal to generate a passivation film so as to achieve the purpose of protecting the metal. The inorganic salt corrosion inhibitor shows the following weaknesses in the application process: (1) the consumption speed is high, and additives need to be supplemented when the detergent is used; (2) the generated passivation film is thick and poor in heat conductivity, so that the heat dissipation performance is reduced; (3) the inorganic salt corrosion inhibitor has poor stability; (4) is not environment-friendly. The above disadvantages limit further widespread use of inorganic type cooling liquids.
The corrosion inhibitor of the organic cooling liquid which is used in the market mostly mainly comprises monobasic organic acid and dibasic organic acid. The organic acid type corrosion inhibitor changes the electrochemical property of the metal surface mainly through active adsorption on the metal surface, thereby preventing the metal corrosion. Compared with inorganic corrosion inhibitors, the consumption of the organic acid corrosion inhibitor is slow, and additives do not need to be supplemented. However, the organic acid corrosion inhibitor forms a thin (only a few nanometers) and non-dense adsorption film, which results in a less than ideal corrosion protection effect on tin and aluminum alloys, especially on cast aluminum heat transfer corrosion and aluminum pump cavitation corrosion.
Disclosure of Invention
The invention mainly aims to provide a preparation method and application of an organic carboxylic acid corrosion inhibition additive, which can effectively solve the problems in the background art.
In order to achieve the purpose, the invention adopts the technical scheme that:
a preparation method of an organic carboxylic acid corrosion inhibition additive comprises the following components in percentage by weight: 1-2% of methylbenzotriazole, 7-8% of adipic acid, 9-12% of sebacic acid, 1-2% of tricarboxylic acid, 2-3% of sodium benzoate, 8-13% of potassium hydroxide and 60-85% of water, and comprises the following steps:
firstly, adding water into a reaction kettle, then adding tricarboxylic acid into the reaction kettle, and stirring and dissolving;
step two, adding potassium hydroxide into the mixed solution in the step one, and stirring for dissolving;
step three, heating the mixed solution in the step two, adding adipic acid, stirring and dissolving uniformly, cooling to room temperature, adding sodium benzoate, and stirring uniformly;
and step four, finally, adding sebacic acid and methylbenzotriazole into the mixed solution in the step three, stirring and mixing to obtain uniform and transparent liquid, namely the organic carboxylic acid corrosion inhibition additive.
Preferably, the raw material components preferably comprise the following components in percentage by weight: 1.2% of methylbenzotriazole, 7.5% of adipic acid, 10% of sebacic acid, 1.8% of tricarboxylic acid, 2.5% of sodium benzoate, 10% of potassium hydroxide and 67% of water.
Preferably, the mixed solution in the first step is heated to 30-45 ℃.
Preferably, after the adipic acid is added in the step one, sodium benzoate is added when the pH value of the mixed solution is 2.5-4.0.
The application of the organic carboxylic acid corrosion inhibition additive is applied to preparation of a diesel locomotive cooling liquid.
Preferably, the diesel locomotive coolant is obtained by diluting an organic carboxylic acid corrosion inhibition additive with water; the mass of the organic carboxylic acid corrosion inhibition additive and water is 1: 15 to 40.
Preferably, the mass ratio of the organic carboxylic acid corrosion inhibition additive to water is preferably 1: 29.
compared with the prior art, the invention has the following beneficial effects:
1. the preparation method has the advantages of simple process, uniform components, low equipment requirement and low cost, and is beneficial to industrial production.
2. The organic carboxylic acid corrosion inhibition additive prepared by the invention is convenient to use and good in stability, and obviously improves the comprehensive corrosion prevention effect on metal, especially the heat transfer corrosion of cast aluminum and the cavitation corrosion of an aluminum pump.
3. The organic acid corrosion inhibitor has good compatibility, good stability, slow consumption, long service life, environmental protection and safety in water-based liquid.
Drawings
FIG. 1 is a flow chart of the preparation of a corrosion inhibiting additive for organic carboxylic acids according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1, a preparation method of an organic carboxylic acid corrosion inhibition additive comprises the following components in percentage by weight: 1.2% of methylbenzotriazole, 7.5% of adipic acid, 10% of sebacic acid, 1.8% of tricarboxylic acid, 2.5% of sodium benzoate, 10% of potassium hydroxide and 67% of water, and comprises the following steps:
firstly, adding water into a reaction kettle, then adding tricarboxylic acid into the reaction kettle, and stirring and dissolving;
step two, adding potassium hydroxide into the mixed solution in the step one, and stirring for dissolving;
step three, heating the mixed solution in the step two, adding adipic acid, stirring and dissolving uniformly, cooling to room temperature, adding sodium benzoate, and stirring uniformly;
and step four, finally, adding sebacic acid and methylbenzotriazole into the mixed solution in the step three, stirring and mixing to obtain uniform and transparent liquid, namely the organic carboxylic acid corrosion inhibition additive.
In the first step, the mixed solution is heated to 30-45 ℃.
And step one, after adding adipic acid, adding sodium benzoate when the pH value of the mixed solution is 2.5-4.0.
The organic carboxylic acid corrosion inhibition additive is applied to preparation of a cooling liquid of an internal combustion locomotive.
The diesel locomotive cooling liquid is obtained by diluting an organic carboxylic acid corrosion inhibition additive with water; the mass of the organic carboxylic acid corrosion inhibition additive and water is 1: 15-40, the organic acid corrosion inhibitor has good compatibility, good stability, slow consumption, long service life, environmental protection and safety in water-based liquid.
The mass ratio of the organic carboxylic acid corrosion inhibition additive to water is preferably 1: 29.
example two
As shown in fig. 1, a preparation method of an organic carboxylic acid corrosion inhibition additive comprises the following components in percentage by weight: 1% of methylbenzotriazole, 7% of adipic acid, 9% of sebacic acid, 1% of tricarboxylic acid, 2% of sodium benzoate, 8% of potassium hydroxide and 60% of water, and the method comprises the following steps:
firstly, adding water into a reaction kettle, then adding tricarboxylic acid into the reaction kettle, and stirring and dissolving;
step two, adding potassium hydroxide into the mixed solution in the step one, and stirring for dissolving;
step three, heating the mixed solution in the step two, adding adipic acid, stirring and dissolving uniformly, cooling to room temperature, adding sodium benzoate, and stirring uniformly;
and step four, finally, adding sebacic acid and methylbenzotriazole into the mixed solution in the step three, stirring and mixing to obtain uniform and transparent liquid, namely the organic carboxylic acid corrosion inhibition additive.
In the first step, the mixed solution is heated to 30-45 ℃.
And step one, after adding adipic acid, adding sodium benzoate when the pH value of the mixed solution is 2.5-4.0.
The organic carboxylic acid corrosion inhibition additive is applied to preparation of a cooling liquid of an internal combustion locomotive.
The diesel locomotive cooling liquid is obtained by diluting an organic carboxylic acid corrosion inhibition additive with water; the mass of the organic carboxylic acid corrosion inhibition additive and water is 1: 15-40, the organic acid corrosion inhibitor has good compatibility, good stability, slow consumption, long service life, environmental protection and safety in water-based liquid.
The mass ratio of the organic carboxylic acid corrosion inhibition additive to water is preferably 1: 29.
EXAMPLE III
As shown in fig. 1, a preparation method of an organic carboxylic acid corrosion inhibition additive comprises the following components in percentage by weight: 2% of methylbenzotriazole, 8% of adipic acid, 12% of sebacic acid, 2% of tricarboxylic acid, 3% of sodium benzoate, 13% of potassium hydroxide and 85% of water, and comprises the following steps:
firstly, adding water into a reaction kettle, then adding tricarboxylic acid into the reaction kettle, and stirring and dissolving;
step two, adding potassium hydroxide into the mixed solution in the step one, and stirring for dissolving;
step three, heating the mixed solution in the step two, adding adipic acid, stirring and dissolving uniformly, cooling to room temperature, adding sodium benzoate, and stirring uniformly;
and step four, finally, adding sebacic acid and methylbenzotriazole into the mixed solution in the step three, stirring and mixing to obtain uniform and transparent liquid, namely the organic carboxylic acid corrosion inhibition additive.
In the first step, the mixed solution is heated to 30-45 ℃.
And step one, after adding adipic acid, adding sodium benzoate when the pH value of the mixed solution is 2.5-4.0.
The organic carboxylic acid corrosion inhibition additive is applied to preparation of a cooling liquid of an internal combustion locomotive.
The diesel locomotive cooling liquid is obtained by diluting an organic carboxylic acid corrosion inhibition additive with water; the mass of the organic carboxylic acid corrosion inhibition additive and water is 1: 15-40, the organic acid corrosion inhibitor has good compatibility, good stability, slow consumption, long service life, environmental protection and safety in water-based liquid.
The mass ratio of the organic carboxylic acid corrosion inhibition additive to water is preferably 1: 29.
example four
As shown in fig. 1, a preparation method of an organic carboxylic acid corrosion inhibition additive comprises the following components in percentage by weight: 1.5% of methylbenzotriazole, 7.5% of adipic acid, 10.5% of sebacic acid, 1.5% of tricarboxylic acid, 2.5% of sodium benzoate, 10.5% of potassium hydroxide and 75% of water, and comprises the following steps:
firstly, adding water into a reaction kettle, then adding tricarboxylic acid into the reaction kettle, and stirring and dissolving;
step two, adding potassium hydroxide into the mixed solution in the step one, and stirring for dissolving;
step three, heating the mixed solution in the step two, adding adipic acid, stirring and dissolving uniformly, cooling to room temperature, adding sodium benzoate, and stirring uniformly;
and step four, finally, adding sebacic acid and methylbenzotriazole into the mixed solution in the step three, stirring and mixing to obtain uniform and transparent liquid, namely the organic carboxylic acid corrosion inhibition additive.
In the first step, the mixed solution is heated to 30-45 ℃.
And step one, after adding adipic acid, adding sodium benzoate when the pH value of the mixed solution is 2.5-4.0.
The organic carboxylic acid corrosion inhibition additive is applied to preparation of a cooling liquid of an internal combustion locomotive.
The diesel locomotive cooling liquid is obtained by diluting an organic carboxylic acid corrosion inhibition additive with water; the mass of the organic carboxylic acid corrosion inhibition additive and water is 1: 15-40, the organic acid corrosion inhibitor has good compatibility, good stability, slow consumption, long service life, environmental protection and safety in water-based liquid.
The mass ratio of the organic carboxylic acid corrosion inhibition additive to water is preferably 1: 29.
the four groups of embodiments can prepare the organic carboxylic acid corrosion inhibition additive, and the preparation method has the advantages of simple process, uniform components, low equipment requirement and low cost, and is beneficial to industrial production; the organic carboxylic acid corrosion inhibition additive prepared by the invention is convenient to use and good in stability, and the comprehensive corrosion prevention effect on metal is obviously improved, especially the heat transfer corrosion of cast aluminum and the cavitation corrosion of an aluminum pump; the organic acid corrosion inhibitor has good compatibility, good stability, slow consumption, long service life, environmental protection and safety in water-based liquid.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A preparation method of an organic carboxylic acid corrosion inhibition additive comprises the following components in percentage by weight: 1-2% of methylbenzotriazole, 7-8% of adipic acid, 9-12% of sebacic acid, 1-2% of tricarboxylic acid, 2-3% of sodium benzoate, 8-13% of potassium hydroxide and 60-85% of water, and is characterized in that: the method comprises the following steps:
firstly, adding water into a reaction kettle, then adding tricarboxylic acid into the reaction kettle, and stirring and dissolving;
step two, adding potassium hydroxide into the mixed solution in the step one, and stirring for dissolving;
step three, heating the mixed solution in the step two, adding adipic acid, stirring and dissolving uniformly, cooling to room temperature, adding sodium benzoate, and stirring uniformly;
and step four, finally, adding sebacic acid and methylbenzotriazole into the mixed solution in the step three, stirring and mixing to obtain uniform and transparent liquid, namely the organic carboxylic acid corrosion inhibition additive.
2. The method of claim 1, wherein the corrosion inhibiting additive is selected from the group consisting of: the raw material components preferably comprise the following components in percentage by weight: 1.2% of methylbenzotriazole, 7.5% of adipic acid, 10% of sebacic acid, 1.8% of tricarboxylic acid, 2.5% of sodium benzoate, 10% of potassium hydroxide and 67% of water.
3. The method of claim 1, wherein the corrosion inhibiting additive is selected from the group consisting of: and heating the mixed solution in the first step to 30-45 ℃.
4. The method of claim 1, wherein the corrosion inhibiting additive is selected from the group consisting of: and after adding adipic acid in the step one, adding sodium benzoate when the pH value of the mixed solution is 2.5-4.0.
5. Use of an organic carboxylic acid corrosion inhibiting additive according to claims 1-4, wherein: the organic carboxylic acid corrosion inhibition additive is applied to preparation of a cooling liquid of an internal combustion locomotive.
6. Use of an organic carboxylic acid corrosion inhibiting additive according to claim 5, wherein: the diesel locomotive coolant is obtained by diluting the organic carboxylic acid corrosion inhibition additive disclosed by any one of claims 1 to 4 with water; the mass of the organic carboxylic acid corrosion inhibition additive and water is 1: 15 to 40.
7. Use of an organic carboxylic acid corrosion inhibiting additive according to claim 6, wherein: the mass ratio of the organic carboxylic acid corrosion inhibition additive to water is preferably 1: 29.
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| CN114774924A (en) * | 2022-05-27 | 2022-07-22 | 上海皇晶生物科技有限公司 | Ammonia nitrogen-free ferrous metal water-soluble corrosion inhibitor and preparation method thereof |
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| CN108913106A (en) * | 2018-08-01 | 2018-11-30 | 上海添蓝生物科技有限公司 | A kind of full stress-strain h type engine h coolant liquid |
| CN110819992A (en) * | 2019-11-27 | 2020-02-21 | 济南鼎隆化工科技有限公司 | Environment-friendly organic metal corrosion inhibitor and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108913106A (en) * | 2018-08-01 | 2018-11-30 | 上海添蓝生物科技有限公司 | A kind of full stress-strain h type engine h coolant liquid |
| CN110819992A (en) * | 2019-11-27 | 2020-02-21 | 济南鼎隆化工科技有限公司 | Environment-friendly organic metal corrosion inhibitor and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114774924A (en) * | 2022-05-27 | 2022-07-22 | 上海皇晶生物科技有限公司 | Ammonia nitrogen-free ferrous metal water-soluble corrosion inhibitor and preparation method thereof |
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