CN106867481A - Engine coolant and its preparation technology - Google Patents
Engine coolant and its preparation technology Download PDFInfo
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- CN106867481A CN106867481A CN201710201467.6A CN201710201467A CN106867481A CN 106867481 A CN106867481 A CN 106867481A CN 201710201467 A CN201710201467 A CN 201710201467A CN 106867481 A CN106867481 A CN 106867481A
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- 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
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Abstract
It is widely used in automobile, industrial equipment, power equipment preventing the corrosion inhibiter complexing agent of corrosion and scaling, knot rust, the coolant of cavitation erosion to be newly formulated and its preparation technology the invention discloses a kind of, the corrosion inhibiter complexing agent is used in the coolant systems such as ethylene glycol deionized water, propane diols deionized water, glycerine deionized water, mixed alcohol deionized water, and its composition is the liquid mixture containing corrosion inhibiter, buffer, scale preventative, defoamer and colouring agent.The present invention is applied widely, operation is simple, production efficiency is high, continuous production can be industrialized, glassware corrosion experiment, cast aluminium heat transfer corrosion experiment, aluminium pump gas cave corrosion test and the simulation corrosion experiment of the requirements of GB29743 2013 can be met with the coolant that this liquid formulations is produced by additive.
Description
Technical field
The present invention relates to the coolant and its preparation technology that are applied in automobile, industrial equipment, power equipment, more particularly to
Corrosion inhibiter complexing agent containing corrosion inhibiter, buffer, scale preventative, defoamer and colouring agent, is applied to alcohols and deionized water
In the engine cool liquid system of proportioning.
Background technology
With the progress of automobile technology and material, the continuous application of new material.Requirement to engine coolant is increasingly
Height, using inorganic salts corrosion inhibiter, inorganic salt type corrosion inhibiter includes phosphate type and silicate-type two types to initial coolant,
Wherein silicate-type corrosion inhibiter occupation rate of market is about 70% or so.Typical phosphate type corrosion inhibiter is directed to aircraft engine
The corrosion inhibitor formula of machine aluminium alloy cooling system, it is that the phosphoric acid that mass fraction is 0.9%-1.0% is added in ethylene glycol, then
The triethanolamine solution regulation pH value for adding 50% is 6.9-7.3, and the mercaptobenzothiazole sodium for being subsequently adding 0.2%-0.3% is molten
Liquid, it is the erosion in order to prevent amine to copper to add mercaptobenzothiazoler；The typical corrosion inhibitor formula of another phosphate type be by
Benzoate and nitrite are constituted, and are mainly used in cast iron coolant system, and pH value is 7.0-8.5.Inorganic salts corrosion inhibiter is to gold
The protection of metal surface is mainly and is passivated by making metal surface, and production passivating film reaches the protection to metal, this inorganic
The corrosion inhibiter depletion rate of salt form is fast, and service life is very short, and typically just consumption is over after coolant runs 2.5 ~ 50,000 km.
Phosphate type corrosion inhibiter cannot be effectively protected the parts such as aluminium alloy heat radiator and cylinder cap, silicate-type inhibition
Agent is arisen at the historic moment.Silicate is the special corrosion inhibitor of aluminium alloy, so as aluminium alloy part is in the application of cooling system, silicic acid
The exploitation of salt form corrosion inhibitor formula is also more and more, and more than 70% coolant of present market sale is all the silicate for using
Type corrosion inhibiter.But a distinct issues during silicate-type corrosion inhibiter use are silicate is very easy to polymerization, raw
Into gel or precipitation, blocking pipeline reduces heat-transfer effect.So the formula technique problem of silicate-type corrosion inhibiter is to solve first
The stability of silicate, then could be by the coolant of the compounding excellent of corrosion inhibiter, method general at present
Add a certain proportion of silicate stabilizers, but because the prices of raw materials are expensive, building-up process complicated difficult is industrializing.
In recent years, the compound probability of silicate stabilizers was accelerated silicon by some emerging coolant technology enterprises
The fast development of hydrochlorate type coolant.But silicate-type corrosion inhibitor formula still has certain limitation, its anticorrosion effect
Fruit has very big relation with the species of corrosion inhibiter, corrosion inhibiter addition sequence, stabilizer type and stabilizer addition, in formula
The anticorrosion that can all run into either large or small problem so as to have impact on coolant when research, development process and production coolant is imitated
Really.With the continuous improvement that user is required coolant, emphasis of the long-life type coolant inhibitor agent prescription into research.
Protection of the organic carboxyl acid type corrosion inhibiter to metal is mainly adsorbed by the active surface in metal surface, is changed
Become the electrochemical properties of metal surface to prevent metal erosion, this type corrosion inhibiter depletion rate is slow.By long-term substantial amounts of
Driving examines the integrated protection impact of performance of organic carboxyl acid type coolant very well using experiment, and corrosion inhibiter is in real process
Wear rate it is very low, be a kind of long-life product.But most of at present compounding with organic carboxyl acid by inorganic component is obtained
Product, with good anticorrosion ability, but long-life feature is not highlighted.
Meanwhile, complete formula system is probably made up of 10-13 kind chemicals, in practical operation, even if possessing formula,
The additional proportion of auxiliary material and time are always a problem for perplexing technical staff in production process, and chemical kind recognizes not
Clearly, the problems such as leakage plus material often occurring, adds wrong material, add component incorrect, cause coolant to be scrapped, cause huge
Economic loss, so the corrosion inhibiter complexing agent of Development and Production efficiency high turns into inevitable.
The content of the invention
The purpose of the present invention is to propose to a kind of engine coolant, including liquid-type corrosion inhibitor for coolant, by various
Chemicals compounding obtain, with anticorrosion, good antiscale property, antirust, avoid cavitation erosion etc. characteristic.
The purpose of the present invention is realized by following technology paths：
A kind of engine coolant, the engine coolant is made up of coolant base fluid and corrosion inhibiter complexing agent, it is described including
Corrosion inhibiter complexing agent silicate-type corrosion inhibiter complexing agent and organic carboxyl acid type corrosion inhibiter complexing agent, wherein,
The silicate-type corrosion inhibiter complexing agent is made up of the weight portion of following compositions：
Deionized water 34-50 parts；
BTA 3-6.8 parts
Natrium nitrosum 5.6-10 parts；
Sodium molybdate 1-2 parts；
11-17 parts of piece alkali；
Borax 6-12 parts；
Decanedioic acid 5-10 parts；
Adipic acid 4-7 parts；
Metasilicate pentahydrate sodium 3-5 parts
Stabilizer 1-5 parts
Silicate 1-5 parts
Anti-foaming agent 0.06-0.1 parts；
Pigment 0.1-0.2 parts；
The organic carboxyl acid type corrosion inhibiter complexing agent is made up of the weight portion of following compositions：
Deionized water 20-30 parts；
BTA 1.5-3.0 parts；
Caprylic acid 8.6-11.5 parts；
Decanedioic acid 2.5-4.8 parts；
DC11 3.4-5.5 parts；
Sodium Benzoate 9.8-11.5 parts；
Citric acid 0.9-1.5 parts；
4.8-8 parts of piece alkali；
Anti-foaming agent 0.03-0.05 parts；
Pigment 0.05-0.10 parts；
The coolant base fluid is prepared by alcohols and deionized water according to the different ratio of different freezing points.
The silicate-type corrosion inhibiter complexing agent is made up of the percentage by weight of following compositions：
NaOH 5%,
The nitrogen of benzo three file 1%,
Sodium nitrate 1.6%,
Natrium nitrosum 1.6%,
Borax 8%,
Decanedioic acid 3%,
Sodium Benzoate 4%,
Sodium molybdate 1%,
Silicate 2%,
Stabilizer 2%,
Deionized water 66.8%；
The corrosion inhibiter complexing agent is used for heavy load automobile engine cooling liquid, and 50 kilograms of inhibitions are added in coolant per ton
Agent complexing agent.
The present invention also proposes a kind of preparation technology for preparing above-mentioned engine coolant, and the technique includes step：
1）Prepare corrosion inhibiter complexing agent：The number or ratio of the composition are added with substep, is mixed；
2）Prepare coolant base fluid：In stirring and filling, need to add ethylene glycol/propylene glycol/the third three of different proportion according to freezing point
Alcohol/mixed alcohol and deionized water；
3）Mixed configuration：The liquid corrosion inhibitor complexing agent that will be prepared is poured into coolant base fluid and stirred 20 minutes；
4）Filtering is filling：The coolant filtering that will have been produced is filling；
Wherein, in step 1, each composition addition sequence of silicate-type corrosion inhibiter mixed liquor be followed successively by BTA-piece alkali-go from
Sub- water-natrium nitrosum-sodium molybdate-borax-decanedioic acid-adipic acid-silicate stabilizers-silicate-anti-foaming agent-pigment；
Each composition addition sequence of organic carboxyl acid type corrosion inhibiter mixed liquor be followed successively by BTA-isooctyl acid-caprylic acid-piece alkali-
Deionized water-decanedioic acid-DC11-Sodium Benzoate-citric acid-anti-foaming agent-pigment.
In step 3, stir and mechanical agitation or air-blowing stirring, mixing time 15-30 minutes under mechanical agitation, drum can be used
The gas agitating time is no less than 30 minutes.
Corrosion inhibiter complexing agent preparation technology for heavy load automobile engine cooling liquid includes step：
1）By NaOH and water dissolves；
2）The nitrogen file of benzo three, sodium nitrate, natrium nitrosum, borax, decanedioic acid, Sodium Benzoate, sodium molybdate, stabilizer are sequentially added,
Stirring 30 minutes；
3）After mixed liquor whole dissolving is limpid, silicate is added, stirred 30 minutes, all dissolved；
4）All the mixed liquor quiescent setting of dissolving 7 days, filter limpid.
When coolant base fluid is prepared, the ethylene glycol/propylene glycol/glycerine/mixed alcohol and deionized water according to it is following not
Added with proportioning：
Freezing point matches mass percent（%）
Mixed alcohol/the deionized water of DEG C ethylene glycol/deionized water propane diols/deionized water glycerine/deionized water
0 0/100 0/100 0/100 0/100
-10 25/75 26/74 31/69 29/71
-15 33/67 34/67 38/62 36/64
-20 38/62 38/62 43/57 40/60
-25 43/57 44/56 48/52 46/54
-30 48/52 48/52 53/47 51/49
-35 53/47 52/48 58/42 56/44
-40 56/44 55/46
-45 58/42 59/41
-50 60/40 63/47
Said ratio forms the coolant base fluid suitable for different freezing points.
Liquid-type corrosion inhibiter of the invention has that formulation operations are simple, production efficiency is high, anticorrosion ability good, compatibility
It is good, be suitable for production ethylene glycol-deionization water type, propane diols-deionization water type, glycerine-deionization water type, mixed alcohol-go from
Sub- water type coolant.
The liquid formulations production time is short, three wastes, with simple to operate, production efficiency it is high, anticorrosion ability is good, and
The features such as capacitive is good, is suitable for the coolant production under the current coolant production status of China and current condition.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with specific embodiment, to this hair
Bright further description.
Embodiment 1：- 25 DEG C of light load coolants of 1 ton of ethylene glycol type
1. liquid hybrid solution is prepared：BTA, 5.5kg pieces alkali, the 3.0kg nitrous of 1.5kg are first added in agitator tank
4kg boraxs, 2.5kg decanedioic acid are added after sour sodium and the stirring clarification of 20kg deionized waters, 1.5kg is added after stirring clarification in 20 minutes
Silicate stabilizers are stirred to clarify, and 2kg metasilicate pentahydrate sodiums are added into stirring clarification, add 0.03kg anti-foaming agents and 0.07kg
Pigment, stirring 20 minutes it is standby；
2. coolant base fluid is prepared：430kg ethylene glycol and 570kg water is added to stir in early agitator tank 10 minutes；
3. mixture manufacturing：The mixed liquid for adding step 1 to prepare under stirring, stirs 20 minutes；
4. filter filling：Filling i.e. available -25 DEG C of 1 ton of the ethylene glycol type light load coolants of coolant filtering that will have been produced,
Indices are qualified after the coolant is detected according to GB29743-2013, and can be conducted heat by glassware corrosion experiment, cast aluminium
Corrosion test, aluminium pump gas cave corrosion experiment and simulative corrosion test.
Implement example 2：- 35 DEG C of heavy load coolants of 5 tons of ethylene glycol types
1. liquid hybrid solution is prepared：BTA, 28kg pieces alkali, the 15kg natrium nitrosums of 8kg are first added in agitator tank
3.5kg sodium molybdates, 22kg boraxs, 14kg decanedioic acid are added with after the stirring clarification of 92kg deionized waters, after stirring clarification in 20 minutes
Add 7.5kg silicate stabilizers to stir to clarify, 10kg metasilicate pentahydrate sodiums are added into stirring clarification, add the anti-bubbles of 0.15kg
Agent and 0.35kg pigments, stirring 20 minutes it is standby；
2. coolant base fluid is prepared：2650kg ethylene glycol and 2350kg water is added to stir in agitator tank 10 minutes,
3. mixture manufacturing：The mixed liquid for adding step 1 to prepare under stirring, stirs 20 minutes；
4. filter filling：Filling i.e. available -35 DEG C of 5 tons of the ethylene glycol type light load coolants of coolant filtering that will have been produced,
Indices are qualified after the coolant is detected according to GB29743-2013, and nitrite and molybdic acid salt content are up to standard；And can pass through
Glassware corrosion experiment, cast aluminium heat transfer corrosion test, aluminium pump gas cave corrosion experiment and simulative corrosion test.
Implement example 3：- 45 DEG C of organic carboxyl acid type coolants of 20 tons of ethylene glycol types
1. liquid hybrid solution is prepared：BTA, 120kg pieces alkali, the 350kg deionizations of 30kg are first added in agitator tank
60kg decanedioic acid, 68kg DC11s, stirring clarification are added after water stirring clarification, 0.6kg anti-foaming agents and 1.4kg colors is added
Element, stirring 20 minutes it is standby；
2. coolant base fluid is prepared：11200kg ethylene glycol and 8800kg water is added to stir in agitator tank 10 minutes；
3. mixture manufacturing：The mixed liquid for adding step 1 to prepare under stirring, stirs 20 minutes；
4. filter filling：Filling i.e. available -45 DEG C of ethylene glycol type organic carboxyl acid coolants 20 of coolant filtering that will have been produced
Ton, indices are qualified after the coolant is detected according to GB29743-2013, and can be passed by glassware corrosion experiment, cast aluminium
Heat erosion is tested.
Implement example 4：- 30 DEG C of light load coolants of 8 tons of propylene glycols
1. liquid hybrid solution is prepared：BTA, 44kg pieces alkali, the 24kg natrium nitrosums of 12kg are first added in agitator tank
32kg boraxs, 20kg decanedioic acid are added with after the stirring clarification of 160kg deionized waters, 12kg silicic acid is added after stirring clarification in 20 minutes
Salt stabilizing agent is stirred to clarify, and 16kg metasilicate pentahydrate sodiums are added into stirring clarification, adds 0.24kg anti-foaming agents and 0.35kg colors
Element, stirring 20 minutes it is standby；
2. coolant base fluid is prepared：4000kg propane diols and 4000kg water is added to stir in agitator tank 10 minutes；
3. mixture manufacturing：The mixed liquid for adding step 1 to prepare under stirring, stirs 20 minutes；
4. filter filling：Filling i.e. available -30 DEG C of 8 tons of the propylene glycol light load coolants of coolant filtering that will have been produced,
Indices are qualified after the coolant is detected according to GB29743-2013, and can be conducted heat by glassware corrosion experiment, cast aluminium
Corrosion test, aluminium pump gas cave corrosion experiment and simulative corrosion test.
Implement example 5：- 25 DEG C of organic carboxyl acid coolants of 10 tons of propylene glycols
1. liquid hybrid solution is prepared：BTA, 60kg pieces alkali and the 175kg deionizations of 15kg are first added in agitator tank
37kg decanedioic acid, 27kg DC11s, stirring clarification are added after water stirring clarification, 0.3kg anti-foaming agents and 0.8kg colors is added
Element, stirring 20 minutes it is standby；
2. coolant base fluid is prepared：4300kg ethylene glycol and 5700kg water is added to stir in agitator tank 10 minutes；
3. mixture manufacturing：The mixed liquid for adding step 1 to prepare under stirring, stirs 20 minutes；
4. filter filling：Filling i.e. available -25 DEG C of propylene glycol organic carboxyl acid coolants 10 of coolant filtering that will have been produced
Ton, indices are qualified after the coolant is detected according to GB29743-2013, and can be passed by glassware corrosion experiment, cast aluminium
Heat erosion is tested.
Table 1 below is the different ratio table of alcohols and deionized water, forms the coolant base fluid suitable for different freezing points：
Table 1
Particular embodiments described above, has been carried out further detailed to the purpose of the present invention, technical scheme and beneficial effect
Illustrate, should be understood that and the foregoing is only specific embodiment of the invention, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc. should be included in protection of the invention
Within the scope of.
Claims (6)
1. a kind of engine coolant, it is characterised in that the engine coolant is by coolant base fluid and corrosion inhibiter complexing agent
Constitute, the corrosion inhibiter complexing agent includes silicate-type corrosion inhibiter complexing agent and organic carboxyl acid type corrosion inhibiter complexing agent, wherein,
The silicate-type corrosion inhibiter complexing agent is made up of the weight portion of following compositions：
Deionized water 34-50 parts；
BTA 3-6.8 parts
Natrium nitrosum 5.6-10 parts；
Sodium molybdate 1-2 parts；
11-17 parts of piece alkali；
Borax 6-12 parts；
Decanedioic acid 5-10 parts；
Adipic acid 4-7 parts；
Metasilicate pentahydrate sodium 3-5 parts
Stabilizer 1-5 parts
Anti-foaming agent 0.06-0.1 parts；
Pigment 0.1-0.2 parts；
The organic carboxyl acid type corrosion inhibiter complexing agent is made up of the weight portion of following compositions：
Deionized water 20-30 parts；
BTA 1.5-3.0 parts；
Caprylic acid 8.6-11.5 parts；
Decanedioic acid 2.5-4.8 parts；
DC11 3.4-5.5 parts；
Sodium Benzoate 9.8-11.5 parts；
Citric acid 0.9-1.5 parts；
4.8-8 parts of piece alkali；
Anti-foaming agent 0.03-0.05 parts；
Pigment 0.05-0.10 parts；
The coolant base fluid is prepared by alcohols and deionized water according to the different ratio of different freezing points.
2. engine coolant according to claim 1, it is characterised in that the silicate-type corrosion inhibiter complexing agent is under
The percentage by weight for stating composition is constituted：
NaOH 5%,
The nitrogen of benzo three file 1%,
Sodium nitrate 1.6%,
Natrium nitrosum 1.6%,
Borax 8%,
Decanedioic acid 3%,
Sodium Benzoate 4%,
Sodium molybdate 1%,
Stabilizer 2%,
Silicate 2%,
Deionized water 66.8%；
The corrosion inhibiter complexing agent is used for heavy load automobile engine cooling liquid, and 50 kilograms of inhibitions are added in coolant per ton
Agent complexing agent.
3. engine coolant according to claim 1 and 2, it is characterised in that the coolant base fluid is by ethylene glycol/the third
Glycol/glycerine/mixed alcohol and deionized water are constituted according to different freezing points according to following different ratios：
Freezing point matches mass percent（%）
Mixed alcohol/the deionized water of DEG C ethylene glycol/deionized water propane diols/deionized water glycerine/deionized water
0 0/100 0/100 0/100 0/100
-10 25/75 26/74 31/69 29/71
-15 33/67 34/67 38/62 36/64
-20 38/62 38/62 43/57 40/60
-25 43/57 44/56 48/52 46/54
-30 48/52 48/52 53/47 51/49
-35 53/47 52/48 58/42 56/44
-40 56/44 55/46
-45 58/42 59/41
-50 60/40 63/47
Said ratio forms the coolant base fluid suitable for different freezing points.
4. the preparation technology of the engine coolant as described in one of claim 1-3 is prepared, it is characterised in that the system
Standby technique includes step：
1）Prepare corrosion inhibiter complexing agent：The number or ratio of the composition are added with substep, is mixed；
2）Prepare coolant base fluid：In stirring and filling, need to add ethylene glycol/propylene glycol/the third three of different proportion according to freezing point
Alcohol/mixed alcohol and deionized water；
3）Mixed configuration：The liquid corrosion inhibitor complexing agent that will be prepared is poured into coolant base fluid and stirred 20 minutes；
4）Filtering is filling：The coolant filtering that will have been produced is filling；
Wherein, in step 1, each composition addition sequence of silicate-type corrosion inhibiter mixed liquor be followed successively by BTA-piece alkali-go from
Sub- water-natrium nitrosum-sodium molybdate-borax-decanedioic acid-adipic acid-silicate stabilizers-silicate-anti-foaming agent-pigment；
Each composition addition sequence of organic carboxyl acid type corrosion inhibiter mixed liquor is followed successively by BTA-caprylic acid-piece alkali-deionization
Water-decanedioic acid-DC11-Sodium Benzoate-citric acid-anti-foaming agent-pigment.
5. the preparation technology of engine coolant according to claim 4, it is characterised in that in step 3, stirring can make
Stirred with mechanical agitation or air-blowing, mixing time 15-30 minutes under mechanical agitation, air-blowing mixing time is no less than 30 minutes.
6. the preparation technology of the engine coolant according to claim 4 or 5, it is characterised in that described for heavy load
The corrosion inhibiter complexing agent preparation technology of automobile engine cooling liquid includes step：
1）By NaOH and water dissolves；
2）The nitrogen file of benzo three, sodium nitrate, natrium nitrosum, borax, decanedioic acid, Sodium Benzoate, sodium molybdate, stabilizer are sequentially added,
Stirring 30 minutes；
3）After mixed liquor whole dissolving is limpid, silicate is added, stirred 30 minutes, all dissolved；
4）All the mixed liquor quiescent setting of dissolving 7 days, filter limpid.
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| CN108611062A (en) * | 2018-07-05 | 2018-10-02 | 胡果青 | A kind of automobile cooling |
| CN110330951A (en) * | 2019-07-03 | 2019-10-15 | 盐城三阳汽车用品有限公司 | A kind of environment protecting type engine coolant liquid and preparation method thereof |
| CN112175589A (en) * | 2020-11-24 | 2021-01-05 | 湘潭市润金新材料有限公司 | Cooling liquid for preventing high-temperature denaturation |
| CN112680188A (en) * | 2019-10-17 | 2021-04-20 | 中国石油化工股份有限公司 | Special deicing agent for electric wire and preparation method thereof |
| CN113930221A (en) * | 2021-10-27 | 2022-01-14 | 常州市鑫光化工科技有限公司 | Special cooling liquid for diesel locomotive |
| CN115404049A (en) * | 2021-05-28 | 2022-11-29 | 中国石油化工股份有限公司 | Cooling liquid and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108611062A (en) * | 2018-07-05 | 2018-10-02 | 胡果青 | A kind of automobile cooling |
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| CN112680188A (en) * | 2019-10-17 | 2021-04-20 | 中国石油化工股份有限公司 | Special deicing agent for electric wire and preparation method thereof |
| CN112175589A (en) * | 2020-11-24 | 2021-01-05 | 湘潭市润金新材料有限公司 | Cooling liquid for preventing high-temperature denaturation |
| CN115404049A (en) * | 2021-05-28 | 2022-11-29 | 中国石油化工股份有限公司 | Cooling liquid and preparation method and application thereof |
| CN113930221A (en) * | 2021-10-27 | 2022-01-14 | 常州市鑫光化工科技有限公司 | Special cooling liquid for diesel locomotive |
| CN113930221B (en) * | 2021-10-27 | 2023-12-26 | 常州市鑫光新材料科技有限公司 | Special coolant for diesel locomotive |
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