CN102604603A - Nanometer long-acting cooling liquid - Google Patents
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- CN102604603A CN102604603A CN2012100301442A CN201210030144A CN102604603A CN 102604603 A CN102604603 A CN 102604603A CN 2012100301442 A CN2012100301442 A CN 2012100301442A CN 201210030144 A CN201210030144 A CN 201210030144A CN 102604603 A CN102604603 A CN 102604603A
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Abstract
The invention discloses a nanometer long-acting cooling liquid. The nanometer long-acting cooling liquid comprises a basic liquid, metallic nanoparticles or carbon nanotube particles, a dispersing agent, a corrosion inhibition additive, a pH conditioning agent and a fluorescent coloring agent, wherein the basic liquid is composed of dihydric alcohol and a diluting agent, the grain sizes of the metallic nanoparticles are 3-10nm, the pipe diameters of the carbon nanotube particles are 8-100nm, and the lengths of the carbon nanotube particles are 100-600nm. The cooling liquid has the advantages of high heat conductivity, good heat transfer property, good flowability and low cost.
Description
Technical field
The present invention relates to quench liquid, particularly be applied to automobile, truck, motorcycle, aircraft, train, tractor, generator, compressor motor, marine engine; The electric power system; Industrial engine, electrical equipment generator, the quench liquid in fuel battery engines and the hybrid mover.
Background technology
The quench liquid overwhelming majority of mover use in the market is terepthaloyl moietie-water (EG-H basically
2O) type quench liquid, in human body, the product of EG is hydroxyl, acetate, oxalic acid, makes person acid base imbalance easily, kidney is produced destroy; In use, EG also can be evaporated in the air with water, and EG most when changing quench liquid trickle down on the ground, cause environment and atmospheric pollution, and humans and animals is worked the mischief.Because to be a kind of toxicity big and be difficult to biodegradable compound for EG, in Swiss Confederation's poisonous substance method, is decided to be 4 types of toxic compounds, the environmental issue that EG type quench liquid is brought also receives people's attention day by day.Britain and Switzerland just forbade in the supermarket as far back as 1972, EG type quench liquid is sold in the auto parts machinery shop.
In order to substitute EG, many American-European countries adopt the allotment basal liquid of Ucar 35 (PG) as quench liquid; Domestic existing multiple PG type does not have water coolant and the PG-DW type quench liquid that adds a certain proportion of zero(ppm) water (DW) preparation.Table I-the 1st, the toxicity comparative data of EG, PG, glycerine (GC):
Table I-1
Annotate: the LD50 value is a medium lethal dose(LD&-{50}).
In the laboratory, toxicity is assessed with rat oral medium lethal dose(LD&-{50}) LD50 evaluation system usually, and the LD50 value is low more, explains that toxicity is strong more, and the LD50 value of a certain material is less than or equal to 20.0g/kg
-1During body weight, be considered as objectionable impurities.Because the LD50 value of EG is 4.7g/kg
-1, so EG can be considered objectionable impurities.Aspect biological degradation, there are data to show, EG had only 36% degraded after 5 days.Along with developing rapidly of automotive industry, the environmental issue of bringing because of automobile cooling becomes increasingly conspicuous.
Can find out PG, GC basal liquid from Table I-1, the incomparable advantage of EG is then being arranged aspect toxicity and the biological degradation as quench liquid.Aspect anti-cavitation corrosion, test shows that also PG demonstrates the anti-cavitation erosion ability more excellent than EG in the whole test TR on water pump air pocket frame.PG performance aspect thermal conduction, rubber protection, freezing point, boiling point is suitable with EG.Aspect no water coolant, a kind of especially very outstanding basic liquid of PG, its potential advantage is following:
1, freezing point is low reaches-59 ℃, and boiling point is up to 187 ℃, and water cut changes along with the variation of concentration is regular the influence of its boiling point, anti-ly boils, freeze proof effect is good.
2, can not produce high pressure in the cooling system, avoid high pressure to corrosion of metal with to the influence of component intensity.
3, the vapor pressure of PG and vapour density are much smaller than water type quench liquid, this has important and practical meanings in the heavy loading cooling system, have reduced the cavitation erosion that cavitation erosion that quench liquid occurs to the flow process of high pressure area from low pressure area and engine luggine cause greatly.
PG is the object of common concern as the basal liquid of quench liquid, and existing thermophysical property with several frequently seen basic liquid is tabulated as follows:
Several kinds of thermal physical characteristics of the basic common liquid of Table II-1
Annotate: parameter is the value that normal temperature and standard atmosphere are depressed.
Can find out with PG to have above-mentioned many advantages from last table as basic liquid; But its heat conductivility is unsatisfactory; Its thermal conductivity has only 39% of water, and this certainly will greatly reduce the capacity of heat transmission, and above-mentioned EG, GC etc. are so same; Therefore, conclusion is can not organic alcohols be used as quench liquid separately.
At present typical product is EVANS on the home market, as being to disclose a kind of non-hydro-thermal conductive liquid in 94193360.1 the patent documentation at application number; One of prescription of this product is 99% PG, and another prescription has used EG or EG-PG mixed solution, and this product has occurred some problems from nineteen ninety-five since China market is promoted, therefore, influenced large-scale use.In this product, used EG or EG-PG mixed solution as basal liquid, used SODIUMNITRATE in the simultaneously used inhibiter, can decomposition and inversion be inferior sodium nitrate after being heated, these are very unfavorable to environmental protection; In addition, the PG of its use, EG-EG mixed solution because not diluted is mobile poor so its viscosity is bigger, influence system's thermal conduction, increase the water pump pumps energy consumption; Have again, EG, PG-EG mixed solution thermal conductivity is low, influences the cooling system of vehicle heat radiation, so there is part to use the vehicle of this product high temperature phenomenon to occur; At last, basal liquid is PG, or PG+EG mixed solution cost is high, expensive, unfavorable popularization.
Summary of the invention
The purpose of this invention is to provide a kind of nanometer long-acting liquid coolant, technical problem to be solved is: thermal conductivity is low, and heat transfer property is poor, and mobile poor, cost is high.
For solving the problems of the technologies described above, technical scheme provided by the invention is:
A kind of nanometer long-acting liquid coolant comprises that the basal liquid of being made up of divalent alcohol and thinner, metal nanoparticle or the caliber that particle diameter is 3-100nm are carbon nanotube particulate, dispersion agent, corrosion inhibition additive, PH regulator and the fluorescent colorant of 100-600nm for 8-100nm length; Wherein, the shared weight percent of above-mentioned raw materials is following:
As specializing, described divalent alcohol is a kind of in Ucar 35, the USP Kosher or both mixtures.
As specializing, described thinner is a kind of in Trivalin SF, the deionized water or both mixtures.
As specializing, described metal nanoparticle is one or more in copper, cupric oxide, titanium oxide, iron, aluminium, the gama-alumina.
As specializing, described carbon nanotube particulate is the multi-wall carbon nano-tube tube particle or the multi-wall carbon nano-tube tube particle aqueous solution.
As specializing, described dispersion agent is X 2073, PEG 400 or polyoxyethylene nonylphenol ether.
As specializing, described corrosion inhibition additive is Sodium orthomolybdate, Sodium Benzoate, contain azole compounds both combinations or three's combination arbitrarily.
As specializing, the PH regulator is ammoniacal liquor or hydrochloric acid.
As specializing, described fluorescent colorant is red or green.
As specializing, containing azole compounds is benzotriazole or TTA or both mixtures.
The invention has the beneficial effects as follows:
1, the present invention fills a prescription and does not contain EG in the basal liquid, does not contain amine in the corrosion additive, sulfide, and phosphide, muriate and pin hydrochlorate meet the ROHS of European Union environmental protection standard; For existing vehicle EG-H2O type quench liquid provides feasibility to environment-friendly type PG, PG-DW, the upgrading of GC-DW type quench liquid.
2, under non-pressurised state, the nano-fluid boiling point reaches more than 120 ℃, and non-pressurised state benefits to the safety of mover and cooling system.
3, nano-fluid quench liquid boiling point of the present invention is high; Can not accelerate the consumption of quench liquid because of evaporation; Needn't often add quench liquid, also can not consume the anticorrosive additive in the quench liquid, can prolong the replacement cycle of quench liquid greatly; Even need not change quench liquid all the life, the feature of environmental protection, economic performance are very good.
4, with respect to traditional quench liquid, the nano-fluid quench liquid has better resistance to wears anti-blockage capability.
5, the thermal conductivity of quench liquid of the present invention increases, and system's heat transfer efficiencies improves, and has avoided the generation of vehicle high temperature phenomenon in use of existing PG type quench liquid.Significantly reduce electronics fan work number of times and working hour simultaneously, and can significantly dwindle the area of scatterer, reduce the cooling system volume, save electric power, reduce oil consumption.
6, the specific heat ratio water of quench liquid of the present invention is little, and temperature raises faster, can shorten the engine warm-up time, helps fuel-saving environmental protection.
7, basal liquid is an organic type, except the boiling point height, also has lower freezing point, anti-ly boils, antifreezing function is good.
8, the organic type basal liquid also has good corrosion proof function, the galvanic corrosion phenomenon of traditional quench liquid can not occur, incrustation scale also can not occur and get rusty phenomenon.
Embodiment
Below in conjunction with embodiment the present invention is further elaborated.
The nanometer long-acting liquid coolant comprises that the basal liquid of being made up of divalent alcohol and thinner, metal nanoparticle or the caliber that particle diameter is 3-100nm are carbon nanotube particulate, dispersion agent, corrosion inhibition additive, PH regulator and the fluorescent colorant of 100-600nm for 8-100nm length; Wherein, the shared weight percent of above-mentioned raw materials is following:
Wherein, described divalent alcohol is a kind of in Ucar 35, the USP Kosher or both mixtures.Described thinner is a kind of in Trivalin SF, the deionized water or both mixtures.Described metal nanoparticle is one or more in copper, cupric oxide, titanium oxide, iron, aluminium, the gama-alumina.Described carbon nanotube particulate is the multi-wall carbon nano-tube tube particle or the multi-wall carbon nano-tube tube particle aqueous solution.Described corrosion inhibition additive is Sodium orthomolybdate, Sodium Benzoate, contain azole compounds both combinations or three's combination arbitrarily; Azole compounds is benzotriazole or TTA.The PH regulator is ammoniacal liquor or hydrochloric acid.Described fluorescent colorant is red or green.For dispersion agent, when metal nanoparticle is copper (Cu), cupric oxide (CuO), titanium oxide (TiO
2), during iron (Fe), the dispersion agent of selecting for use is X 2073 (SDBS); When metal nanoparticle is aluminium (Al), gama-alumina (Al
2O
3) time, the dispersion agent of selecting for use is for gathering second 2 400. (PEG400); When adding the multi-wall carbon nano-tube tube particle (MWCNTS) or the aqueous solution, dispersion agent is a polyoxyethylene nonylphenol ether.
In an embodiment, PG refers to Ucar 35; GC refers to USP Kosher; DW refers to deionized water; NWCNTS refers to the multi-wall carbon nano-tube tube particle; PEG400 refers to PEG 400; BTA refers to benzene a pair of horses going side by side triazole; TTA refers to TTA.
Embodiment 1
The nanometer long-acting liquid coolant is the Cu-PG nano-fluid.That is: in 85.59%PG, 10%DW base fluid, add the 2%Cu metal nanoparticle, add the 2%SDBS dispersion agent, the Sodium orthomolybdate with 0.1%, 0.1% Sodium Benzoate, 0.1% BTA and TTA mixture join in the base fluid; After stirring companion's dissolving; Take out after 3 hours through ultra-sonic oscillation, add 0.01% tinting material again, add 0.1% ammoniacal liquor adjustment pH value to 9.1; Fully stir the companion evenly, uniform and stable Cu-PG type nano-fluid.Record this fluid thermal conductivity with the thermal transient collimation method and improve 21% than base fluid.The per-cent of above-mentioned raw materials is weight percentage.
Embodiment 2
The nanometer long-acting liquid coolant is the CuO-GC nano-fluid.That is: in 77%GC, 15.97%DW base fluid, add the 5%CuO metal nanoparticle, add the 0.8%SDBS dispersion agent, the Sodium orthomolybdate with 0.1%, 0.1% Sodium Benzoate, 0.1% BTA and TTA mixture join in the base fluid; After stirring companion's dissolving; Put into ultra-sonic oscillation and take out after 3 hours, add 0.03% tinting material again, add 1% ammoniacal liquor adjustment pH value to 8.5; Fully stir the companion evenly, CuO-GC type nano-fluid.This fluid thermal conductivity improves 30% than base fluid.The per-cent of above-mentioned raw materials is weight percentage.
Embodiment 3
The nanometer long-acting liquid coolant is Al2O3-PG, GC nano-fluid.That is: in 10%PG, 59.49%GC, 29%DW base fluid, add 0.3%Al
2O
3Metal nanoparticle; Add the 0.4%PEG400 dispersion agent, join in the base fluid after again 0.1% Sodium orthomolybdate, 0.1% Sodium Benzoate, 0.1% BTA and TTA mixture being stirred companion's dissolving in PG, put into ultra-sonic oscillation and take out after 3 hours; Add 0.01% tinting material; Add 0.5% hydrochloric acid adjustment pH value to 5.1, fully stir the companion evenly, PG-GC mixed type nano-fluid.This fluid thermal conductivity improves 19% than base fluid.The per-cent of above-mentioned raw materials is weight percentage.
Embodiment 4
The nanometer long-acting liquid coolant is an Al2O3-PG waterless nano fluid.In 65%PG, 30% Trivalin SF, add the 4%Al2O3 metal nanoparticle, add the 0.4%PEG400 dispersion agent, the Sodium orthomolybdate with 0.05%, 0.05% Sodium Benzoate, 0.05% BTA and TTA mixture join in the base fluid; After stirring companion's dissolving; Take out after 3 hours through ultra-sonic oscillation, add 0.01% tinting material again, add 0.44% ammoniacal liquor adjustment pH value to 8.5; Fully stir the companion evenly, uniform and stable Al2O3-PG anhydrous type nano-fluid.This fluid thermal conductivity 0.31 improves 23% than base fluid.The per-cent of above-mentioned raw materials is weight percentage.
Embodiment 5
The nanometer long-acting liquid coolant is a MWCN-PG waterless nano fluid.That is: in 64%PG, 30% Trivalin SF base fluid, add 5%MWCN, add 0.4% polyoxyethylene nonylphenol ether dispersion agent, the Sodium orthomolybdate with 0.05%, 0.05% Sodium Benzoate, 0.05% BTA and TTA mixture join in the base fluid; After stirring companion's dissolving; Take out after 3 hours through ultra-sonic oscillation, add 0.01% tinting material again, add 0.44% ammoniacal liquor adjustment pH value to 9.0; Fully stir the companion evenly, uniform and stable MWCN-PG anhydrous type nano-fluid.This fluid thermal conductivity improves 29% than base fluid.The per-cent of above-mentioned raw materials is weight percentage.
Embodiment 6
In 90%PG, 5% Trivalin SF, add 0.05%Al2O3,0.05%Al metal nanoparticle, add the 1.83%PEG400 dispersion agent, the Sodium orthomolybdate with 1.5%, 1.5% BTA and TTA mixture join in the base fluid; After stirring companion's dissolving; Take out after 3 hours through ultra-sonic oscillation, add 0.02% tinting material again, add 0.05% ammoniacal liquor adjustment pH value to 8.5; Fully stir the companion evenly, uniform and stable anhydrous type nano-fluid.This fluid thermal conductivity 0.30 improves 21% than base fluid.The per-cent of above-mentioned raw materials is weight percentage.
Embodiment 7
In 10%PG, 85%DW, add 0.05%CuO, 0.05%TiO
2Metal nanoparticle adds 3.69%SDBS, and 0.5% Sodium Benzoate, 0.5% BTA and TTA mixture are joined in the base fluid; After stirring companion's dissolving; Take out after 3 hours through ultra-sonic oscillation, add 0.01% tinting material again, add 0.2% hydrochloric acid adjustment pH value to 5.3; Fully stir the companion evenly, uniform and stable anhydrous type nano-fluid.This fluid thermal conductivity 0.29 improves 20% than base fluid.The per-cent of above-mentioned raw materials is weight percentage.
Embodiment 8
In 70%GC, 21.86% Trivalin SF, add the 3%Al2O3 metal nanoparticle, add the 5%PEG400 dispersion agent, the Sodium orthomolybdate with 0.005%, 0.0025% Sodium Benzoate, 0.0025% BTA and TTA mixture join in the base fluid; After stirring companion's dissolving; Take out after 3 hours through ultra-sonic oscillation, add 0.03% tinting material again, add 001% ammoniacal liquor adjustment pH value to 8.5; Fully stir the companion evenly, uniform and stable Al2O3-PG anhydrous type nano-fluid.This fluid thermal conductivity 0.31 improves 22% than base fluid.The per-cent of above-mentioned raw materials is weight percentage.
Embodiment 9
The nanometer long-acting liquid coolant is a MWCN-PG waterless nano fluid.That is: in 82%PG, 12.57% Trivalin SF base fluid, add 3%MWCN, add 0.1% polyoxyethylene nonylphenol ether dispersion agent, the Sodium orthomolybdate with 0.5%, 0.5% Sodium Benzoate, 0.5% BTA and TTA mixture join in the base fluid; After stirring companion's dissolving; Take out after 3 hours through ultra-sonic oscillation, add 0.03% tinting material again, add 0.8% ammoniacal liquor adjustment pH value to 9.0; Fully stir the companion evenly, uniform and stable MWCN-PG anhydrous type nano-fluid.This fluid thermal conductivity improves 27% than base fluid.The per-cent of above-mentioned raw materials is weight percentage.
The physicals of the foregoing description is tested following Table III-1
Above data are that normal temperature and standard atmosphere are depressed and recorded.GC, PG viscosity can decline to a great extent along with the rising of temperature.The thermal conductivity of nano-fluid raises with granule density and temperature and increases; The heat transfer coefficient of neat liquid PG is the linear change rule with fluctuations in discharge; But being logarithm with fluctuations in discharge, the heat transfer coefficient of nano-fluid increases the rule variation; The big more this variation tendency of volume share is precipitous more, and the heat transfer coefficient increase is fast more.
Table IV-1-1 and IV-1-2 are that the metallic corrosion of embodiment 1-9 detects
The fluid that embodiment 1-9 processes is put in test piece, and whether the checking test piece corrodes or fouling
Table IV-1-1
Table IV-1-2
Table V-1-1 and Table V-1-2 are the checking lather collapse time
Table V-1-1
Table V-1-2
Can find out that from above-mentioned experimental data the beneficial effect of the invention is: the present invention fills a prescription and does not contain EG in the basal liquid, does not contain amine in the corrosion additive, sulfide, and phosphide, muriate and pin hydrochlorate meet the ROHS of European Union environmental protection standard; For existing vehicle EG-H2O type quench liquid provides feasibility to environment-friendly type PG, PG-DW, the upgrading of GC-DW type quench liquid.Under non-pressurised state, the nano-fluid boiling point reaches more than 120 ℃, and non-pressurised state benefits to the safety of mover and cooling system.Nano-fluid quench liquid boiling point of the present invention is high; Can not accelerate the consumption of quench liquid because of evaporation; Needn't often add quench liquid, also can not consume the anticorrosive additive in the quench liquid, can prolong the replacement cycle of quench liquid greatly; Even need not change quench liquid all the life, the feature of environmental protection, economic performance are very good.With respect to traditional quench liquid, the nano-fluid quench liquid has better resistance to wears anti-blockage capability.The thermal conductivity of quench liquid of the present invention increases, and system's heat transfer efficiencies improves, and has avoided the generation of vehicle high temperature phenomenon in use of existing PG type quench liquid.Significantly reduce electronics fan work number of times and working hour simultaneously, and can significantly dwindle the area of scatterer, reduce the cooling system volume, save electric power, reduce oil consumption.The specific heat ratio water of quench liquid of the present invention is little, and temperature raises faster, can shorten the engine warm-up time, helps fuel-saving environmental protection.Basal liquid is an organic type, except the boiling point height, also has lower freezing point, anti-ly boils, antifreezing function is good.The organic type basal liquid also has good corrosion proof function, the galvanic corrosion phenomenon of traditional quench liquid can not occur, incrustation scale also can not occur and get rusty phenomenon.
Claims (10)
1. a nanometer long-acting liquid coolant is characterized in that: comprise that the basal liquid of being made up of divalent alcohol and thinner, metal nanoparticle or the caliber that particle diameter is 3-100nm are carbon nanotube particulate, dispersion agent, corrosion inhibition additive, PH regulator and the fluorescent colorant of 100-600nm for 8-100nm length; Wherein, the shared weight percent of above-mentioned raw materials is following:
2. nanometer long-acting liquid coolant according to claim 1 is characterized in that: described divalent alcohol is a kind of in Ucar 35, the USP Kosher or both mixtures.
3. nanometer long-acting liquid coolant according to claim 1 is characterized in that: described thinner is a kind of in Trivalin SF, the deionized water or both mixtures.
4. nanometer long-acting liquid coolant according to claim 1 is characterized in that: described metal nanoparticle is one or more in copper, cupric oxide, titanium oxide, iron, aluminium, the gama-alumina.
5. nanometer long-acting liquid coolant according to claim 1 is characterized in that: described carbon nanotube particulate is the multi-wall carbon nano-tube tube particle or the multi-wall carbon nano-tube tube particle aqueous solution.
6. nanometer long-acting liquid coolant according to claim 1 is characterized in that: described dispersion agent is X 2073, PEG 400 or polyoxyethylene nonylphenol ether.
7. nanometer long-acting liquid coolant according to claim 1 is characterized in that: described corrosion inhibition additive is Sodium orthomolybdate, Sodium Benzoate, contain azole compounds both combinations or three's combination arbitrarily.
8. nanometer long-acting liquid coolant according to claim 1 is characterized in that: the PH regulator is ammoniacal liquor or hydrochloric acid.
9. nanometer long-acting liquid coolant according to claim 1 is characterized in that: described fluorescent colorant is for red or green.
10. nanometer long-acting liquid coolant according to claim 7 is characterized in that: containing azole compounds is benzotriazole or TTA or both mixtures.
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| CN103342992B (en) * | 2013-07-18 | 2015-06-17 | 张圣林 | Multifunctional macromolecule nano energy storage agent |
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| CN104559946A (en) * | 2014-12-24 | 2015-04-29 | 赤峰盛森硅业科技发展有限公司 | Nanometer anti-freezing solution and preparation method thereof |
| CN104923095A (en) * | 2015-06-11 | 2015-09-23 | 长沙理工大学 | Physical dispersing method for carbon nano-tube |
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| CN106524525A (en) * | 2016-10-11 | 2017-03-22 | 西安电子科技大学 | Carbon black-graphene nanometer solar absorber applied to solar water heater |
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| CN106556173A (en) * | 2016-10-11 | 2017-04-05 | 西安电子科技大学 | A kind of Graphene solar absorption agent for being applied to solar water heater |
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| CN106634874A (en) * | 2016-12-29 | 2017-05-10 | 芜湖乐普汽车科技有限公司 | Organic solvent composition for engine antifreezing solution |
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| CN107142091A (en) * | 2017-06-30 | 2017-09-08 | 北京雅士科莱恩石油化工有限公司 | A kind of full stress-strain type nanometer anti-icing fluid and preparation method thereof |
| CN107142091B (en) * | 2017-06-30 | 2021-02-02 | 北京雅士科莱恩石油化工有限公司 | All-organic nano anti-freezing solution and preparation method thereof |
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| CN108998165A (en) * | 2018-08-20 | 2018-12-14 | 清华大学 | Lubricant and preparation method thereof, and the method for reducing fluid viscosity |
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| CN112213225A (en) * | 2020-09-21 | 2021-01-12 | 东风商用车有限公司 | Cold and hot fatigue test method and device for engine cylinder head assembly |
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