CN101914369A - Organic anti-freeze cooling liquid and preparation method thereof - Google Patents
Organic anti-freeze cooling liquid and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a cooling liquid for automobiles, and relates to an organic anti-freeze cooling liquid and a preparation method thereof. The cooling liquid is characterized by comprising 40 to 60 percent of glycol, 60 to 40 percent of de-ionized water and additives, wherein the additives comprise a reducing agent, an antioxidant, an antiseptic, a rust preventative, a mildew inhibitor, a scale inhibitor, a defoaming agent, a pH value buffer and a pH value regulator. The preparation method comprises the following steps of: 1, adding the de-ionized water and the reducing agent into a reactor A and heating the mixture to the boiling point; and 2, squeezing the liquid in the reactor A into a reactor B after the temperature reaches the normal temperature, and adding the glycol and the additives into the reactor B to prepare the anti-freeze cooling liquid. Due to the adoption of hydrazine hydrate in the invention, free oxygen in the de-ionized water is eliminated and the problem of corrosion resistance is solved well; the product meets the requirements on long-term effect, environmental protection, safety and non-toxicity; the cooling liquid has the advantage of low cost of the required raw materials; the preparation method has the advantages of simplicity, a few facilities and low energy consumption, wins warm praise from customers and has extremely high popularization and application value and broad market prospect.
Description
Technical field
The present invention relates to a kind of automobile cooling fluid.
Background technology
Even to this day, people not only require antifreeze temperature reduction performance good to the variation that essence has taken place on the thought theory that is applied in of automobile antifreezing cooling fluid, and require to have long-lasting, environmental protection, safe, nontoxic, become the anti-freeze cooling liquid of non-maintaining type.
At present, the anti-freeze cooling liquid of selling on the market all is that spent glycol and water are basal liquid, be aided with organic anti-freeze cooling liquid made from the inorganic composite type additive, simple inorganic salt type anti-freeze cooling liquid is eliminated, existing pure organic acid type anti-freeze cooling liquid is because factors such as prices, people are difficult to accept for the moment, therefore, engineering technical personnel and relevant departments are all at the novel anti-freeze cooling liquid of research and development, make it to reach high-quality, high-performance can be the anti-freeze cooling liquid of people's acceptance again on price.
Ethylene glycol can be oxidized under elevated temperature heat load running condition, and cooling system is inflated and used a large amount of copper and copper alloy element, all can promote oxidation of glycol, generates the mixing acid with erosion action based on formic acid, and this solution has corrodibility more.
Applying of ethylene glycol water type anti-freeze cooling liquid mainly is the problem of oxidation that will solve ethylene glycol, prevents oxidation of glycol, reduces its corrodibility.
Ethylene glycol, water is the organic anti-freeze cooling liquid of basal liquid, existing patent application 96109058.8,98104884.6,981117298.9,200610015513.5,02159677.8,200480036206.4,200810050223.3 all use P contained compound, be easy to generate harmful material, patent application 200910033848.3,200910075775.4,01131412.5,93121035.6 use Resorcinol, p-ten.-butylcatechol, MEHQ, oxidation inhibitor such as xitix, make the cooling fluid performance improve to some extent, yet, free oxygen to anti-freeze cooling liquid is not handled, the existence of the free oxygen in the deionized water, in preparation anti-freeze cooling liquid process, will consume oxidation inhibitor, make it oxidation inhibitor quantity not sufficient in the cooling fluid use, cause the oxidized of ethylene glycol, generate mixing acids corrosives based on formic acid.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of novel anti-freeze cooling liquid is provided.
Organic anti-freeze cooling liquid is characterized in that, contains ethylene glycol 40%～60%, contains deionized water 60%～40%, and addition material has:
Reductive agent 0.001%～0.1%,
Oxidation inhibitor: 2%～5%,
Sanitas: 0.5%～5%,
Rust-preventive agent: 0.5%～2%,
Mould inhibitor: 0.3%～3%,
Scale inhibitors: 0.3%～3%,
Defoamer: 0.001%～0.01%,
The pH value buffer reagent: 1%～2%,
The pH value conditioning agent: 0.1%～2%, the percentage quantity of addition material is the percentage quantity of ethylene glycol, deionized water sum;
Reductive agent is a hydrazine hydrate;
Oxidation inhibitor be gallic acid zinc ester, different vitamin-E, xitix wherein one or both;
Sanitas be ethylene glycol monomethyl ether, ethylene glycol ether, propylene glycol monobutyl ether, sebacic acid, ethylene ethyl acrylate wherein one or both;
Rust-preventive agent be diethylene hydramine, hydrolysis maleic anhydride wherein one or both;
Mould inhibitor is a Sodium Benzoate;
Scale inhibitors be benzotriazole, methyl benzotriazole wherein one or both;
Defoamer be polyoxyethylene polyoxypropylene glyceryl ether, polyoxyethylene polyoxypropylene butyl ether wherein one or both;
The pH value buffer reagent is EDTA;
The pH value conditioning agent is a trolamine.
The organic anti-freeze cooling liquid preparation method:
1, in reactor A, adds deionized water, add reductive agent, stir, be heated to boiling point under the normal pressure, be incubated after 10～20 minutes, be cooled to normal temperature again;
2, in reactor A, behind the fluid temperature Da Changwen, after filtration, remove particulate contamination, be pressed into reactor B, add ethylene glycol, add oxidation inhibitor, sanitas, rust-preventive agent, mould inhibitor, Scale inhibitors, defoamer, pH value buffer reagent, stir, add the pH value conditioning agent, pH value is reached in 8～11 scopes, add tinting material, more after filtration, get to storage tank, make anti-freeze cooling liquid.
The present invention be with deionized water through the hydrazine hydrate deoxidation treatment, making does not have free oxygen in the deionized water, add the oxidation inhibitor synergistic effect again, effectively suppresses to add in the anti-freeze cooling liquid oxidation of material, thereby reaches preservative activity.
Hydrazine hydrate has the deoxygenation rust removing function, has the reducing metal ability simultaneously in alkalescence, makes it the not oxidized material of metal and corrodes.Hydrazine hydrate really belongs to toxic substance, reacts with free oxygen, generates the hydroxyl organism, thus the toxicity of losing.
Add sanitas, form organic protective film in the metallic surface, engine material and cooling system are played a good protection.
Add rust-preventive agent, guarantee that engine material and cooling system material keep the cleaning of metallic surface.
Add mould inhibitor, Sodium Benzoate makes the existing good anti-effect of going mouldy of anti-freeze cooling liquid, and light metal is had good preservative activity, has the enhancing conduction of heat again.
Add Scale inhibitors, can effectively suppress calcium in the water, the isoionic deposition of magnesium, prevent to influence the heat-transfer effect of anti-freeze cooling liquid because of fouling.
Add defoamer, can prevent that anti-freeze cooling liquid from producing bubble in use, bubble can cause cavitation to equipment in the cooling system.
Add the pH value buffer reagent, obtain buffering, keep anti-freeze cooling liquid in the PH of the best scope, to work for keeping pH value.
Add the pH value conditioning agent, be to regulate pH value in the 8-11 scope, make anti-freeze cooling liquid that enough reserve alkalinities are in use arranged simultaneously.
Add tinting material, help checking the fault of cooling system.
The present invention adopts hydrazine hydrate, eliminates the free oxygen in the deionized water, prevents the oxidized of ethylene glycol, thereby has solved the protection against corrosion problem well.Be added with organic compounds and prepare anti-freeze cooling liquid, this organic anti-freeze cooling liquid is not had corrodibility, and that this product meets is long-acting, environmental protection, safety, nontoxic requirement, raw material required for the present invention, be the commercially available prod, cheap, this preparation method is simple, equipment used is few, power consumption is few, and productive expense is low, and this product is welcomed by customers, have highly application value, have good market outlook.
Embodiment
Below in conjunction with specific embodiment the present invention is made detailed description further.
The anti-freeze cooling liquid fundamental component is an ethylene glycol, the consumption decision anti-freeze cooling liquid trade mark of ethylene glycol, second major ingredient is a deionized water, contain free oxygen in the deionized water, free oxygen has destructiveness, one of technical characterictic of the present invention is to add reductive agent, become deionized water and become the deionization oxygen-free water, addition material quantity is relevant with the deionized water consumption, and preparation process is to handle free oxygen in the deionized water, atmospheric operation, be heated to and boil, reinforced, stir, make it abundant dissolving, the equal kg meter of the used material quantity of each embodiment in the table 1.
Table 1
Reactor A is an encloses container, with stirring, heating, cooling and test set, reduces dissolved oxygen and invades chance on it, has on the reactor B and stirs and test set.The working hour of agitator is dissolved as suitablely fully on reactor A, the reactor B with addition material, and used filter plant is used for eliminating particle type impurity.Add tinting material in this reactor B, mostly be fluorescence green, its amount is wanted appropriateness, to show other solution of difference, also is beneficial to the automobile cooling system malfunction elimination.
Claims (8)
1. organic anti-freeze cooling liquid, it is characterized in that, contain ethylene glycol 40%～60%, contain deionized water 60%～40%, addition material has: reductive agent 0.001%～0.1%, oxidation inhibitor: 2%～5%, sanitas: 0.5%～5%, rust-preventive agent: 0.5%～2%, mould inhibitor: 0.3%～3%, Scale inhibitors: 0.3%～3%, defoamer: 0.001%～0.01%, the pH value buffer reagent: 1%～2%, pH value conditioning agent: 0.1%～2%, the percentage quantity of addition material is the percentage quantity of ethylene glycol, deionized water sum; Described reductive agent is a hydrazine hydrate.
2. according to the described organic anti-freeze cooling liquid of claim 1, it is characterized in that, described oxidation inhibitor be gallic acid zinc ester, different vitamin-E, xitix wherein one or both.
3. according to the described organic anti-freeze cooling liquid of claim 1, it is characterized in that, described sanitas be ethylene glycol monomethyl ether, ethylene glycol ether, propylene glycol monobutyl ether, sebacic acid, ethylene ethyl acrylate wherein one or both.
4. according to the described organic anti-freeze cooling liquid of claim 1, it is characterized in that, described rust-preventive agent be diethylene hydramine, hydrolysis maleic anhydride wherein one or both.
5. according to the described organic anti-freeze cooling liquid of claim 1, it is characterized in that, described Scale inhibitors be phenylpropyl alcohol triazole, methyl benzotriazole wherein one or both.
6. according to the described organic anti-freeze cooling liquid of claim 1, it is characterized in that, described defoamer be polyoxyethylene polyoxypropylene glyceryl ether, polyoxyethylene polyoxypropylene butyl ether wherein one or both.
7. according to the described organic anti-freeze cooling liquid of claim 1, it is characterized in that described pH value conditioning agent is a trolamine.
8. organic anti-freeze cooling liquid preparation method, its feature:
(1), in reactor A, add deionized water, add reductive agent, stir, be heated to boiling point under the normal pressure, be incubated after 10～20 minutes, be cooled to normal temperature again;
(2), in reactor A, behind the fluid temperature Da Changwen, after filtration, remove particulate contamination, be pressed into reactor B, add ethylene glycol, add oxidation inhibitor, sanitas, rust-preventive agent, mould inhibitor, Scale inhibitors, defoamer, pH value buffer reagent, stir, add the pH value conditioning agent, pH value is reached in 8～11 scopes, add tinting material, more after filtration, squeeze into storage tank, make anti-freeze cooling liquid.
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| CN102250592A (en) * | 2011-05-27 | 2011-11-23 | 北京欧陆宝石化产品有限公司 | Long-acting environmentally-friendly anti-freeze cooling medium of wind powder equipment |
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| CN103666389A (en) * | 2013-09-30 | 2014-03-26 | 安阳化学工业集团有限责任公司 | Engine cooling liquid prepared by utilizing coal ethylene glycol waste |
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| CN104031620A (en) * | 2014-07-02 | 2014-09-10 | 宝捷润滑油镇江有限公司 | Anti-boiling, anti-scale and anti-freeze solution and preparation method thereof |
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Application publication date: 20101215 |