CN102851002A - Anti-corrosion antifreeze liquid for aluminium - Google Patents

Anti-corrosion antifreeze liquid for aluminium Download PDF

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CN102851002A
CN102851002A CN2012103762883A CN201210376288A CN102851002A CN 102851002 A CN102851002 A CN 102851002A CN 2012103762883 A CN2012103762883 A CN 2012103762883A CN 201210376288 A CN201210376288 A CN 201210376288A CN 102851002 A CN102851002 A CN 102851002A
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CN102851002B (en
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黄永伟
靳惠明
邓学鹏
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Jiangsu Huayang New Energy Co ltd
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Abstract

The invention discloses anti-corrosion antifreeze liquid for aluminium, which consists of benzotriazole, polysorbate 80, rare-earth salt, a cationic surfactant, alizarin red, propylene glycol and glycerol, wherein the concentration of the benzotriazole is 0.1 to 1.4g/L; the concentration of the polysorbate 80 is 1 to 2ml/L; the concentration of the rare-earth salt is 0.01 to 0.1g/L; the concentration of the cationic surfactant is 0.05 to 0.3g/L; the concentration of the alizarin red is 0.001 to 0.008g/L; the concentration of the propylene glycol is 150 to 500ml/L; and the concentration of the glycerol is 100 to 450ml/L. The anti-corrosion antifreeze liquid has low viscosity and the heat exchange effect is improved; and meanwhile, by changing the proportion of components, different freezing point ranges are obtained to adapt to application in different places and reducing the cost. Moreover, corrosion inhibition efficiency of the anti-corrosion antifreeze liquid on aluminium alloy is over 91 percent, the anti-corrosion antifreeze liquid is environmental-friendly, does not require additional equipment, is convenient to use, has low investment and rapid response, and the original process flow is not damaged.

Description

The anti-corrosion deicing fluid of aluminium
Technical field
The invention belongs to corrosion and the guard technology field of metallic substance, refer more particularly to the anti-corrosion deicing fluid of a kind of aluminium.
Background technology
Deicing fluid is a kind of cooling fluid that contains special additive, has a winter antifreeze, summer the is anti-premium properties such as boil.In order to make solar water heater when temperature is too low, be unlikely to frost crack pipe, normally adopt binary cycle system, interchanger namely is set in solar water heating system, the hot side of heat collector and interchanger forms the first circulation, and use subzero deicing fluid to make heat-transfer working medium, thereby the system of realization is antifreeze.It is now domestic and international that what use more than 95% is the aq. type deicing fluid of ethylene glycol, ethylene glycol is antifreeze, boiling point is high, volatility is little, modest viscosity and along with temperature variation is little, Heat stability is good, but the meta-bolites of ethylene glycol has severe toxicity, big for environment pollution, the environmental protection of advocating with country does not conform to.In addition, because the pipeline in the solar energy circulating system is to be made by all kinds of metals, corrode in the material that long term operation causes for fear of deicing fluid so, prolong the work-ing life of water-heater, in deicing fluid, also should add inhibiter, reach the effect of anti-inhibition.
At present the development experience of inhibiter the protection of Novel light alloy material and many metal composite structures such as from traditional metal materials such as iron and steel, copper to aluminium, magnesium, also increasing about the research of these alloy material corrosion preventions.Aluminium has three classes with inhibiter: the adsorptivity inhibiter, mainly by the chemisorption of physical adsorption and covalent linkage, form firmly adsorption film at molecular surface, and medium and metal are kept apart, thereby suppress corrosion of metal; Diffustivity inhibiter, inhibitor molecular act on the full surface of metal, are that the resistance in the local microbattery increases, and corrosion current reduces, and Corrosion of Al is suppressed; The table and the change type inhibiter carries out chemical reaction with metal, reactant is covered on the metallic surface.
Domesticly start late in the research aspect the corrosion of aluminium alloy protection, be at first from inorganics, such as molybdate, tungstate etc. have certain corrosion mitigating effect, nowadays developed into organic inhibitor, aluminium is being pursued efficiently simultaneously with the research of inhibiter, gradually to nontoxic, green, environmental protection, economic future development, there is the traditional chromium hydrochlorate of pollution to become the trend of corrosive protection of aluminium alloy field development and utilize rare-earth salts to substitute to environment, in addition that structure is composite with the different compounds that have in nature complementarity, realizing the synergistic slow corrosion effect, then is an important research direction of aluminium inhibiter.
Summary of the invention
The purpose of this invention is to provide and a kind ofly both can guarantee the solar energy system heat transfer effect, again aluminium alloy is had the anti-corrosion deicing fluid of the aluminium of good corrosion inhibition, with overcome the inhibiter poorly water-soluble, to the problem such as environment is unfriendly.
The invention provides the anti-corrosion deicing fluid of a kind of aluminium, it is characterized in that being formed by benzotriazole, Polysorbate 80, rare-earth salts, cats product, sodium alizarinsulfonate, interior glycol, glycerol, wherein benzotriazole concentration is the 0.1-1.4 grams per liter, Polysorbate 80 concentration be the 1-2 milliliter/liter, rare-earth salts concentration is the 0.01-0.1 grams per liter, cationic surfactant concentration be 0.05-0.3 grams per liter, sodium alizarinsulfonate concentration be 0.001-0.008 grams per liter, propylene glycol concentration be the 150-500 milliliter/liter, glycerol concentration be the 100-450 milliliter/liter.
Preferred technical scheme has: the anti-corrosion deicing fluid of a kind of aluminium, it is characterized in that being formed by benzotriazole, Polysorbate 80, rare-earth salts, cats product, sodium alizarinsulfonate, propylene glycol, glycerol, wherein benzotriazole concentration is 0.8 grams per liter, Polysorbate 80 concentration is 1.5 milliliters/liter, rare-earth salts concentration is 0.05 grams per liter, and cationic surfactant concentration is that 0.15 grams per liter, sodium alizarinsulfonate concentration are that 0.004 grams per liter, propylene glycol concentration are that 300 milliliters/liter, interior three determining alcohols are 300 milliliters/liter; Described rare-earth salts is cerous salt; Described cationic surfactant is aminopyrazole derivatives.
The anti-corrosion deicing fluid of a kind of aluminium, its preparation method is:
Step 1: benzotriazole, Polysorbate 80, rare upper salt, cats product, sodium alizarinsulfonate are dissolved in propylene glycol and the glycerol fully by ultrasonic vibration;
Step 2: add entry, until the benzotriazole concentration in the solution is the 0.1-1.4 grams per liter, Polysorbate 80 concentration be the 1-2 milliliter/liter, rare-earth salts concentration is the 0.01-0.1 grams per liter, cationic surfactant concentration be 0.05-0.3 grams per liter, sodium alizarinsulfonate concentration be 0.001-0.008 grams per liter, propylene glycol concentration be the 150-500 milliliter/liter, glycerol concentration be the 100-450 milliliter/liter;
Step 3: repeatedly stir.
Aluminium of the present invention forms precipitation membrane with the benzotriazole in the anti-corrosion preservative component by the aluminum ion interaction that generates in the reactive group on its molecule and the corrosion process or insoluble coordination compound film plays corrosion inhibition.Polysorbate 80 belongs to nonionic surface active agent, it contains polar group and non-polar group, adds in the corrosive medium when it, and polar group can adsorb in aluminum alloy surface, non-polar group is aligned in aluminum alloy surface, thereby stop that corrosive medium plays corrosion inhibition.Sodium alizarinsulfonate and cats product form stable associated complex and cover aluminum alloy surface, add simultaneously rare-earth salts, and act synergistically between these inhibiter, make the protective membrane of aluminum alloy surface complete, thereby suppress the corrosion of aluminium alloy.
Aluminium provided by the invention is little with anti-corrosion deicing fluid viscosity, has improved heat transfer effect; By changing component proportion, obtain different freezing point scopes simultaneously, be suitable for different areas and use and the reduction cost.And the inhibition efficiency of aluminium alloy all reached more than 91%, environmentally friendly, do not destroy original technical process, do not need optional equipment, easy to use, smail investments and quick rerurn.
Embodiment
The present invention will be further elaborated below by embodiment.
Embodiment 1
At first by ultrasonic vibration benzotriazole, Polysorbate 80, rare-earth salts, cats product, sodium alizarinsulfonate are dissolved in propylene glycol and the glycerol fully; Then add entry, until the benzotriazole concentration in the solution is 0.1 grams per liter, Polysorbate 80 concentration is 1 milliliter/liter, rare-earth salts concentration is 0.01 grams per liter, and cationic surfactant concentration is that 0.05 grams per liter, sodium alizarinsulfonate concentration are that 0.001 grams per liter, interior diol concentration are that 500 milliliters/liter, glycerol concentration are 100 milliliters/liter; Repeatedly stir at last, form the anti-corrosion deicing fluid of aluminium of the present invention.
Add and do not add above-mentioned aluminium with the tap water of anti-corrosion deicing fluid in all placing aluminium alloy test pieces, immersion for some time.In not adding the tap water of anti-corrosion deicing fluid, aluminum alloy surface has spot corrosion; And in the tap water that adds anti-corrosion deicing fluid, aluminum alloy surface is without obvious evidence of corrosion.And draw through repetition test, this anti-corrosion deicing fluid can reach 91% to the aluminium alloy inhibition efficiency.
Embodiment 2
At first by ultrasonic vibration benzotriazole, Polysorbate 80, rare-earth salts, cats product, sodium alizarinsulfonate are dissolved in propylene glycol and the glycerol fully; Then add entry, until the benzotriazole concentration in the solution is 1.4 grams per liters, Polysorbate 80 concentration is 2 milliliters/liter, rare-earth salts concentration is 0.1 grams per liter, and cationic surfactant concentration is that 0.3 grams per liter, sodium alizarinsulfonate concentration are that 0.008 grams per liter, propylene glycol concentration are that 150 milliliters/liter, glycerol concentration are 450 milliliters/liter; Repeatedly stir at last, form the anti-corrosion deicing fluid of aluminium of the present invention.
Add and do not add above-mentioned aluminium with the tap water of anti-corrosion deicing fluid in all placing aluminium alloy test pieces, immersion for some time.In not adding the tap water of anti-corrosion deicing fluid, aluminum alloy surface has spot corrosion; And in the tap water that adds anti-corrosion deicing fluid, aluminum alloy surface is bright and clean, without spot corrosion.And draw through repetition test, this anti-corrosion deicing fluid can reach 95% to the aluminium alloy inhibition efficiency.
Embodiment 3
At first by ultrasonic vibration benzotriazole, Polysorbate 80, rare-earth salts, cats product, sodium alizarinsulfonate are dissolved in propylene glycol and the glycerol fully; Then add entry, until the benzotriazole concentration in the solution is 0.8 grams per liter, Polysorbate 80 concentration is 1.5 milliliters/liter, rare upper salt concn is 0.05 grams per liter, and cationic surfactant concentration is that 0.15 grams per liter, sodium alizarinsulfonate concentration are that 0.004 grams per liter, propylene glycol concentration are that 300 milliliters/liter, glycerol concentration are 300 milliliters/liter; Repeatedly stir at last, form the anti-corrosion deicing fluid of aluminium of the present invention.
Add and do not add above-mentioned aluminium with the tap water of anti-corrosion deicing fluid in all placing aluminium alloy test pieces, immersion for some time.In not adding the tap water of anti-corrosion deicing fluid, aluminum alloy surface has spot corrosion; And in the tap water that adds anti-corrosion deicing fluid, aluminum alloy surface is bright and clean, without spot corrosion.And draw through repetition test, this anti-corrosion deicing fluid can reach 97% to the aluminium alloy inhibition efficiency.
Represent that with form the prescription of the anti-corrosion deicing fluid of the present invention and experimental result are as follows:
Figure BSA00000785404500031
Figure BSA00000785404500041
Anti-corrosion deicing fluid viscosity provided by the invention is little, has improved heat transfer effect; By changing component proportion, obtain different freezing point scopes simultaneously, be suitable for different areas and use and the reduction cost.And the inhibition efficiency of aluminium alloy all reached more than 91%, environmentally friendly, do not destroy original technical process, do not need optional equipment, easy to use, smail investments and quick rerurn.

Claims (5)

1. anti-corrosion deicing fluid of aluminium, it is characterized in that being formed by benzotriazole, Polysorbate 80, rare-earth salts, cats product, sodium alizarinsulfonate, propylene glycol, glycerol, wherein benzotriazole concentration is the 0.1-1.4 grams per liter, Polysorbate 80 concentration be the 1-2 milliliter/liter, rare-earth salts concentration is the 0.01-0.1 grams per liter, cationic surfactant concentration be 0.05-0.3 grams per liter, sodium alizarinsulfonate concentration be 0.001-0.008 grams per liter, propylene glycol concentration be the 150-500 milliliter/liter, glycerol concentration be the 100-450 milliliter/liter.
2. the anti-corrosion deicing fluid of aluminium according to claim 1, it is characterized in that described benzotriazole concentration is 0.8 grams per liter, Polysorbate 80 concentration is 1.5 milliliters/liter, rare-earth salts concentration is 0.05 grams per liter, and cationic surfactant concentration is that 0.15 grams per liter, sodium alizarinsulfonate concentration are that 0.004 grams per liter, propylene glycol concentration are that 300 milliliters/liter, glycerol concentration are 300 milliliters/liter.
3. the anti-corrosion deicing fluid of aluminium according to claim 1 and 2 is characterized in that rare upper salt is cerous salt.
4. the anti-corrosion deicing fluid of aluminium according to claim 1 and 2 is characterized in that described cationic surfactant is gemini quaternary ammonium salt.
5. the anti-corrosion deicing fluid of aluminium according to claim 1, its preparation method is as follows:
Step 1: benzotriazole, Polysorbate 80, rare-earth salts, cats product and sodium alizarinsulfonate are dissolved in propylene glycol and the glycerol fully by ultrasonic vibration;
Step 2: add entry, until the benzotriazole concentration in the solution is the 0.1-1.4 grams per liter, Polysorbate 80 concentration be the 1-2 milliliter/liter, rare-earth salts concentration is the 0.01-0.1 grams per liter, cationic surfactant concentration be 0.05-0.3 grams per liter, sodium alizarinsulfonate concentration be 0.001-0.008 grams per liter, propylene glycol concentration be the 150-500 milliliter/liter, glycerol concentration be the 100-450 milliliter/liter;
Step 3: repeatedly stir.
CN201210376288.3A 2012-10-08 2012-10-08 Aluminium Anti-corrosion antifreeze liquid Active CN102851002B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105969319A (en) * 2016-06-15 2016-09-28 南京达峰合金有限公司 Solar super-heat-conductive medium with high corrosion resistance
CN106367039A (en) * 2016-08-31 2017-02-01 金嵩 Vehicle antifreezing solution and preparation method thereof
CN107090276A (en) * 2017-04-26 2017-08-25 句容市江电电器机械有限公司 A kind of corrosion-resistant antifreeze fluid

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101698793A (en) * 2008-10-15 2010-04-28 上海港申化工有限公司 automobile antifreeze
CN102021554A (en) * 2010-12-09 2011-04-20 中国海洋大学 Preparation process of cerium-doped silicon corrosion-resisting membrane on surface of aluminium alloy

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101698793A (en) * 2008-10-15 2010-04-28 上海港申化工有限公司 automobile antifreeze
CN102021554A (en) * 2010-12-09 2011-04-20 中国海洋大学 Preparation process of cerium-doped silicon corrosion-resisting membrane on surface of aluminium alloy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105969319A (en) * 2016-06-15 2016-09-28 南京达峰合金有限公司 Solar super-heat-conductive medium with high corrosion resistance
CN106367039A (en) * 2016-08-31 2017-02-01 金嵩 Vehicle antifreezing solution and preparation method thereof
CN107090276A (en) * 2017-04-26 2017-08-25 句容市江电电器机械有限公司 A kind of corrosion-resistant antifreeze fluid

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