CN107619658A - A kind of super heat-transfer working medium of normal temperature and preparation method thereof - Google Patents
A kind of super heat-transfer working medium of normal temperature and preparation method thereof Download PDFInfo
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- CN107619658A CN107619658A CN201710678009.1A CN201710678009A CN107619658A CN 107619658 A CN107619658 A CN 107619658A CN 201710678009 A CN201710678009 A CN 201710678009A CN 107619658 A CN107619658 A CN 107619658A
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Abstract
The invention discloses super heat-transfer working medium of a kind of normal temperature and preparation method thereof, by main transfer substrate working medium, augmentation of heat transfer alcoholic solution and Nanometer Copper solution composition；Main transfer substrate working medium includes monochlorodifluoromethane, iso-butane and ether；Augmentation of heat transfer alcoholic solution is to be respectively adopted that titanium trichloride solution dissolving remixes mixed crystal reaction obtained by and urea is dissolved in absolute ethyl alcohol and is formed by potassium bichromate crystal and beryllium oxide crystal；Nanometer copper solution is to be prepared by copper acetate and potassium borohydride using neopelex as dispersant in polyalcohol.The present invention is the super heat-transfer working medium of composite normal temperature, and relative to single normal temperature heat-pipe working medium, its latent heat of vaporization is monochlorodifluoromethane more than 2 times；It is small to start the temperature difference, thermal source is higher than 5 DEG C with the heat transfer unit (HTU) temperature difference, and heat transfer unit (HTU) can start, and heat pipe start-up temperature is greatly reduced；The identical structure heat pipe made of this working medium, equivalent heat conductivity are 1.5~3 times of common working medium, improve heat pipe uniform temperature and heat transport limitation.
Description
Technical field
The present invention relates to a kind of heat-transfer working medium, and in particular to a kind of super heat-transfer working medium of normal temperature, surpasses in addition, further relating to the normal temperature
The preparation method of heat-transfer working medium.
Background technology
In thermal management technology field, especially technical field of heat dissipation, high-performance heat transfer components can generate heat centralized thermal source
It is quick to be transmitted on radiating expanding surface, so that thermal expansion developable surface uniform temperature is lifted, radiator overall heat exchange efficiency is improved, is adopted simultaneously
Metal heat-conducting is replaced with high-performance heat transfer components, radiator overall weight can be effectively reduced.
Currently, excellent high-performance heat transfer components surely belong to heat pipe undoubtedly, the heat pipe developed using phase-change heat transfer technical principle, its
Equivalent heat conductivity is up to 103~105W/ (mK) magnitude, and the equivalent heat conductivity of best metal also only has 102W/ (mK) is measured
Level, therefore the advantage is based on, hot pipe technique has obtained rapid popularization.Although heat pipe obtains in the application of field of heat transfer at present
Good effect, still, field of radiating are still improving constantly to the demand of radiator performance, and therefore, properties of hot pipe constantly carries
Height is the lasting pursuit of scientific and technological research staff.
The quality of properties of hot pipe depend primarily on heat pipe structure, working fluids characteristic and manufacture craft these three aspect.Exist at present
The technology of properties of hot pipe relative maturity is improved in terms of heat pipe structure and manufacture craft two, and uses and improves working fluids characteristic
Method also has very big developing space to lift the technology of properties of hot pipe.The research to super heat-transfer working medium is concentrated mainly on height now
The warm big super field of heat transfer of hot-fluid, and in civil area, such as electronic radiation, industrial equipment field of heat management, have focused largely on super biography
The normal temperature application of hot working fluid, still, the research for surpassing heat-transfer working medium for normal temperature at present are also relatively fewer.
The content of the invention
One of the object of the invention aims to provide a kind of super heat-transfer working medium of normal temperature, and heat can be greatly reduced in the super heat-transfer working medium of the normal temperature
The start-up temperature of pipe, improve the uniform temperature and heat transport limitation of heat pipe.
The present invention is achieved through the following technical solutions foregoing invention purpose：A kind of super heat-transfer working medium of normal temperature, by main heat transfer
Matrix working medium, augmentation of heat transfer alcoholic solution and Nanometer Copper solution composition；
Main transfer substrate working medium includes monochlorodifluoromethane, iso-butane and ether；
Augmentation of heat transfer alcoholic solution is that titanium trichloride solution dissolving is respectively adopted again by potassium bichromate crystal and beryllium oxide crystal
Mixing is reacted, the alcoholic solution that the mixed crystal of gained is dissolved in absolute ethyl alcohol and formed with urea；
Nanometer copper solution is using neopelex as dispersant, in polyalcohol by copper acetate and potassium borohydride
It is prepared.
The super heat-transfer mechanism of the super heat-transfer working medium of normal temperature of the present invention is：Nano copper particle in the super heat-transfer working medium of normal temperature can be lifted
The thermal conductivity factor of working medium, the thermal resistance from metal to refrigerant heat transfer is reduced, so as to reduce heat transfer temperature difference；The super heat-transfer working medium of normal temperature simultaneously
Middle inorganic salts, in the case of heated, in excitation state, movement velocity be higher than fluid molecule, so that main body working medium can be promoted to enter
Row phase transformation, the difficulty of Working fluid phase changing is substantially reduced, reduce Working fluid phase changing temperature, lift its phase change efficiency, and then overall lifted surpasses
The heat transfer rate of heat-transfer working medium.
The super heat-transfer working medium of normal temperature of the present invention is the super heat-transfer working medium of composite normal temperature, for single normal temperature heat-pipe working medium,
Its latent heat of vaporization is the monochlorodifluoromethane latent heat of vaporization more than 2 times；Start the temperature difference it is small, in its operating temperature range, thermal source with
The heat transfer unit (HTU) temperature difference is higher than 5 DEG C, and heat transfer unit (HTU) can start, and the start-up temperature of heat pipe can be greatly reduced；Using normal temperature of the present invention
Identical structure heat pipe made of super heat-transfer working medium, its equivalent heat conductivity are 1.5~3 times of common working medium equivalent heat conductivity,
Improve the uniform temperature and heat transport limitation of heat pipe.The super heat-transfer working medium of this normal temperature is applied to the various field of heat management under normal temperature operating mode
Heat transfer unit (HTU).
The volume ratio of main transfer substrate working medium of the present invention, augmentation of heat transfer alcoholic solution and nanometer copper solution is 88~92:
3.5~4.5: 5~7.
The volume ratio of monochlorodifluoromethane, iso-butane and ether is 38~41 in main transfer substrate working medium of the present invention:
52~56: 4.5~6.
Polyalcohol of the present invention can be ethylene glycol, hexylene glycol, a propane diols, butanediol, two propyl alcohol of contracting, new penta 2
Alcohol or pentaerythrite etc..
The two of the object of the invention aim to provide the preparation method of the super heat-transfer working medium of above-mentioned normal temperature.Especially by following technical side
Case is realized：
(1) main transfer substrate working medium is prepared：Monochlorodifluoromethane, iso-butane and second are mixed in constant temperature and pressure closed container
Ether, main transfer substrate working medium is made；Purpose is to improve three kinds of material molecule surface-actives, promotes three kinds of working medium uniformly to mix, and is analysed
Go out foreign gas, purify mixed working fluid, the mixed working fluid of warm pressurize processing, it is standby to export to vacuum storage pockets memory storage
With.
(2) augmentation of heat transfer alcoholic solution is prepared：Potassium bichromate crystal is added into the dissolving of titanium trichloride saturated solution respectively first
Completely, beryllium oxide is added into the dissolving of titanium trichloride saturated solution completely, then again mixed the two, and stirred, stood and divide
Layer, centrifuge and obtain mixed crystal (main component is chromic acid beryllium, chromic acid titanium, potassium chloride and titanium chloride etc.), then low temperature drying
Mixed crystal, take the mixed crystal after drying to add absolute ethyl alcohol dilution, then add urea, stir, crystal to be mixed
All dissolvings, augmentation of heat transfer alcoholic solution is made；
(3) nanometer copper solution is prepared：Copper acetate is dissolved in polyhydric alcohol solutions first, stirring and dissolving is formed uniformly copper acetate
Polyhydric alcohol solutions, then neopelex is dissolved in copper acetate polyhydric alcohol solutions；Then sodium hypophosphite is dissolved in more
In first alcohol, stirring and dissolving is formed uniformly sodium hypophosphite polyhydric alcohol solutions, and sodium hypophosphite polyhydric alcohol solutions are added into copper acetate afterwards
In polyhydric alcohol solutions, it is slowly stirred after reaction, is incubated in inertia protects gas, nanometer copper solution is made；
(4) the hot superconduction working medium of normal temperature is prepared：Obtained main transfer substrate working medium, augmentation of heat transfer alcoholic solution and Nanometer Copper is molten
Liquid is sufficiently mixed, then heat-insulation pressure keeping, and the hot superconduction working medium of normal temperature is made.
In step (1) of the present invention, pressure is 4~8MPa in constant temperature and pressure closed container, and thermostat temperature is 85~95
DEG C, constant temperature time is 45~50 minutes.
In step (2) of the present invention, mixed crystal low temperature drying temperature is 40~45 DEG C.
In step (3) of the present invention, 2~2.5 hours are incubated in inertia protects gas, holding temperature is 58~65 DEG C.
In step (4) of the present invention, in the step (4), 58~65 DEG C, 4~6MPa of pressurize, during heat-insulation pressure keeping are incubated
Between 2~2.5 hours.
Compared with prior art, the present invention has following significant effect：
(1) the super heat-transfer working medium of normal temperature of the present invention is the super heat-transfer working medium of composite normal temperature, relative to single normal temperature heat-pipe working medium
Speech, its latent heat of vaporization are the monochlorodifluoromethane latent heat of vaporization more than 2 times；It is small to start the temperature difference, in its operating temperature range, thermal source
It is higher than 5 DEG C with the heat transfer unit (HTU) temperature difference, heat transfer unit (HTU) can start, and the start-up temperature of heat pipe can be greatly reduced.
(2) using identical structure heat pipe made of the super heat-transfer working medium of normal temperature of the present invention, its equivalent heat conductivity is unskilled labor
1.5~3 times of matter equivalent heat conductivity, properties of hot pipe under normal temperature application operating mode is improved, increase adopting heat pipes for heat transfer speed, improve heat pipe
Uniform temperature and heat transport limitation.
(3) the super heat-transfer working medium of normal temperature of the present invention is applied to the various field of heat management heat transfer unit (HTU)s under normal temperature operating mode.
Brief description of the drawings
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is heat-transfer capability test piping diagram of the present invention.
Embodiment
Embodiment 1
The super heat-transfer working medium of normal temperature of the present invention by main transfer substrate working medium, augmentation of heat transfer alcoholic solution and Nanometer Copper solution composition,
Main transfer substrate working medium: augmentation of heat transfer alcoholic solution: nanometer copper solution=90: 4: 6 (volume ratios).
Main transfer substrate working medium includes cryogenic fluid monochlorodifluoromethane, iso-butane and ether, volume ratio 40: 55: 5.
Augmentation of heat transfer alcoholic solution is that titanium trichloride solution dissolving is respectively adopted again by potassium bichromate crystal and beryllium oxide crystal
Mixing is reacted, and mixed crystal and the urea of gained are dissolved in the alcoholic solution of absolute ethyl alcohol formation.
Nanometer copper solution is using neopelex as dispersant, in ethylene glycol by copper acetate and potassium borohydride
It is prepared.
The preparation of the super heat-transfer working medium of above-mentioned 10 liters of normal temperature：
(1) main transfer substrate working medium is prepared：Cryogenic fluid monochlorodifluoromethane, iso-butane and ether are according to 40: 55: 5
Volume ratio, 9 liters are prepared, is mixed in constant temperature and pressure closed container, container inner pressure 5MPa, 90 DEG C of thermostat temperature, maintain mixing
Working medium was in constant temperature and pressure container inside holding pressurize 45 minutes, it is therefore an objective to improve monochlorodifluoromethane, iso-butane and ether these three
Material molecule surface-active, promote these three working medium uniformly to mix, separate out foreign gas, purify mixed working fluid, warm pressurize
The mixed working fluid of processing, it is standby to export to vacuum storage pockets memory storage.
(2) augmentation of heat transfer alcoholic solution is prepared：Potassium bichromate crystal 100g is added into 0.5L titanium trichloride saturations respectively first
Solution dissolves completely, beryllium oxide 10g is added into the dissolving of 0.5L titanium trichlorides saturated solution completely, then again by both in beaker
Mixing, and stir, stratification, centrifuging acquisition mixed crystal, (main component is chromic acid beryllium, chromic acid titanium, potassium chloride
With titanium chloride etc.), 45 DEG C of drying mixed crystals of low temperature, then to take the mixed crystal 120g after drying to add absolute ethyl alcohol 0.4L dilute
Release, then add 10g urea CO (NH2)2, stir, crystal to be mixed all dissolves, and augmentation of heat transfer alcoholic solution is made, is put into
Seal NaOH solution tank NaOH storage.
(3) nanometer copper solution is prepared：30g copper acetates are dissolved in 0.3L ethylene glycol solutions first, the uniform shape of stirring and dissolving
It is dissolved in into copper acetate ethylene glycol solution, then by 20g neopelexes in copper acetate ethylene glycol solution；Then by 30g
Sodium hypophosphite is dissolved in 0.3L ethylene glycol, and stirring and dissolving is formed uniformly sodium hypophosphite ethylene glycol solution, afterwards by sodium hypophosphite second
Glycol solution is added in copper acetate ethylene glycol solution, is slowly stirred after reaction, and insulation 2 is small in inertia protection gas (such as nitrogen)
When, holding temperature is 60 DEG C, and nanometer copper solution is made；
(4) the hot superconduction working medium of normal temperature is prepared：Obtained main transfer substrate working medium, augmentation of heat transfer alcoholic solution and Nanometer Copper is molten
Liquid mixes, and accelerates to merge using ultrasonic wave, realization is sufficiently mixed, and is then incubated 60 DEG C, pressurize 5MPa, continues the heat-insulation pressure keeping time
2 hours, the hot superconduction working medium of normal temperature is made, treats that the hot superconduction working medium of normal temperature is stable, is stored in vacuum tank, it is standby.
The super heat-transfer mechanism of the hot superconduction working medium of normal temperature is：Nanometer in the super heat-transfer working medium of normal temperature, which leads to particle, can lift working medium
Thermal conductivity factor, the thermal resistance from metal to refrigerant heat transfer is reduced, so as to reduce heat transfer temperature difference；The middle nothing of the super heat-transfer working medium of normal temperature simultaneously
Machine salt, in the case of heated, in excitation state, movement velocity is higher than fluid molecule, so as to which main body working medium can be promoted to carry out phase transformation,
The difficulty of Working fluid phase changing is substantially reduced, reduces Working fluid phase changing temperature, lifts its phase change efficiency, and then the overall super heat-transfer working medium of lifting
Heat transfer rate.
In order to prove that the hot superconduction working medium of normal temperature produced by the present invention has super heat-transfer character, two kinds of existing normal temperature heat transfers are taken
Working medium carries out contrast test with the hot superconduction working medium of normal temperature of the present invention, and both normal temperature heat-transfer working mediums are ultra-pure water 1#, market respectively
Efficient heat transfer the working medium A, the hot superconduction working medium B of normal temperature of the present invention of upper buying.
As shown in figure 1, heat-transfer capability is contrasted using following testing scheme.Test philosophy：Heat pipe evaporation ends 1 use
Hot water heating, heat pipe evaporation ends 1 have hot water inlet 11 and hot water outlet 12, and condensation end 2 is cooled down using cold water, and condensation end 2 has
There are a cooling water inlet 21 and cooling water outlet 22, hot water and cold water flow and inlet temperature are constant, are brought out by evaporation ends and condensation
Water temperature angle value, adopting heat pipes for heat transfer ability is derived, it is possible thereby to verify the size of different refrigerant heat transfer abilities under identical operating mode, contrasted
Go out the superiority of different refrigerant heat transfer abilities.Test data such as following table：
(table 1)
The complex heat transfer power that 1# working medium pure water is can be seen that from the data of table 1 is 310W or so, and market purchasing is efficient
Heat-transfer working medium A complex heat transfer power is 435W or so, and the hot superconduction working medium B of normal temperature of the present invention complex heat transfer power is
740W, under equal heat transfer condition, B refrigerant heat transfer amounts are 2.4 times of 1# working medium, and B refrigerant heat transfer amounts are 1.6 times of A working medium,
Thus the superior heat-transfer character of this working medium can be embodied.
Embodiment 2
Main transfer substrate working medium: augmentation of heat transfer alcoholic solution: nanometer copper solution=88: 3.5: 5 (volume ratios).
Main transfer substrate working medium includes low temperature monochlorodifluoromethane, iso-butane and ether, volume ratio 38: 52: 4.5.
Augmentation of heat transfer alcoholic solution is that titanium trichloride solution dissolving is respectively adopted again by potassium bichromate crystal and beryllium oxide crystal
Mixing is reacted, the alcoholic solution that the mixed crystal of gained is dissolved in absolute ethyl alcohol and formed with urea.
Nanometer copper solution is using neopelex as dispersant, in hexylene glycol by copper acetate and potassium borohydride
It is prepared.
The preparation of the super heat-transfer working medium of above-mentioned 10 liters of normal temperature：
(1) main transfer substrate working medium is prepared：Cryogenic fluid monochlorodifluoromethane, iso-butane and ether are according to 38: 52: 4.5
Volume ratio, prepare 9 liters, the pressure 4MPa in stainless steel in constant temperature and pressure closed container, 85 DEG C of thermostat temperature, maintain mixing
The mixed working fluid that working medium is handled in constant temperature and pressure container inside holding pressurize 47 minutes, warm pressurize, export to vacuum storage and hold
Device memory storage is standby.
(2) augmentation of heat transfer alcoholic solution is prepared：Potassium bichromate crystal 100g is added into 0.5L titanium trichloride saturations respectively first
Solution dissolves completely, beryllium oxide 10g is added into the dissolving of 0.5L titanium trichlorides saturated solution completely, then again by both in beaker
Mixing, and stir, stratification, centrifuging acquisition mixed crystal, (main component is chromic acid beryllium, chromic acid titanium, potassium chloride
With titanium chloride etc.), 40 DEG C of drying mixed crystals of low temperature, then to take the mixed crystal 120g after drying to add absolute ethyl alcohol 0.4L dilute
Release, then add 10g urea CO (NH2)2, stir, crystal to be mixed all dissolves, and augmentation of heat transfer alcoholic solution is made, is put into
Seal NaOH solution tank NaOH storage；
(3) nanometer copper solution is prepared：30g copper acetates are dissolved in 0.3L hexylene glycols first
In solution, stirring and dissolving is formed uniformly copper acetate hexylene glycol solution, then 20g neopelexes are dissolved in
In copper acetate hexylene glycol solution；Then 30g sodium hypophosphites are dissolved in 0.3L hexylene glycols, stirring and dissolving is formed uniformly sodium hypophosphite
Hexylene glycol solution, sodium hypophosphite hexylene glycol solution is added in copper acetate hexylene glycol solution afterwards, is slowly stirred after reaction,
2 hours are incubated in inertia protection gas, holding temperature is 58 DEG C, and nanometer copper solution is made；
(4) the hot superconduction working medium of normal temperature is prepared：Obtained main transfer substrate working medium, augmentation of heat transfer alcoholic solution and Nanometer Copper is molten
Liquid mixes, and accelerates to merge using ultrasonic wave, realization is sufficiently mixed, and is then incubated 60 DEG C, pressurize 5MPa, continues the heat-insulation pressure keeping time
2 hours, the hot superconduction working medium of normal temperature is made, treats that the hot superconduction working medium of normal temperature is stable, is stored in vacuum tank, it is standby.
Embodiment 3
Main transfer substrate working medium: augmentation of heat transfer alcoholic solution: nanometer copper solution=92: 4.5: 7 (volume ratios).
Main transfer substrate working medium includes cryogenic fluid monochlorodifluoromethane, iso-butane and ether, volume ratio 41: 56: 6.
Augmentation of heat transfer alcoholic solution is that titanium trichloride solution dissolving is respectively adopted again by potassium bichromate crystal and beryllium oxide crystal
The mixed crystal of gained is dissolved in the alcoholic solution of absolute ethyl alcohol formation with urea after mixing is reacted.
Nanometer copper solution is using neopelex as dispersant, in butanediol by copper acetate and potassium borohydride
It is prepared.
The preparation of the super heat-transfer working medium of above-mentioned 10 liters of normal temperature：
(1) main transfer substrate working medium is prepared：Cryogenic fluid monochlorodifluoromethane, iso-butane and ether are according to 41: 56: 6
Volume ratio, 9 liters are prepared, is mixed in constant temperature and pressure closed container, container inner pressure 8MPa, 95 DEG C of thermostat temperature, maintain mixing
The mixed working fluid that working medium is handled in constant temperature and pressure container inside holding pressurize 50 minutes, warm pressurize, export to vacuum storage and hold
Device memory storage is standby.
(2) augmentation of heat transfer alcoholic solution is prepared：Potassium bichromate crystal 100g is added into 0.5L titanium trichloride saturations respectively first
Solution dissolves completely, beryllium oxide 10g is added into the dissolving of 0.5L titanium trichlorides saturated solution completely, then again by both in beaker
Mixing, and stir, stratification, centrifuging acquisition mixed crystal, (main component is chromic acid beryllium, chromic acid titanium, potassium chloride
With titanium chloride etc.), 42 DEG C of drying mixed crystals of low temperature, then to take the mixed crystal 120g after drying to add absolute ethyl alcohol 0.4L dilute
Release, then add 10g urea CO (NH2)2, stir, crystal to be mixed all dissolves, and augmentation of heat transfer alcoholic solution is made, is put into
Seal NaOH solution tank NaOH storage；
(3) nanometer copper solution is prepared：30g copper acetates are dissolved in 0.3L butanediol solutions first, the uniform shape of stirring and dissolving
It is dissolved in into copper acetate butanediol solution, then by 20g neopelexes in copper acetate butanediol solution；Then by 30g
Sodium hypophosphite is dissolved in 0.3L butanediols, and stirring and dissolving is formed uniformly sodium hypophosphite butanediol solution, afterwards by sodium hypophosphite fourth
Glycol solution is added in copper acetate butanediol solution, is slowly stirred after reaction, is incubated 2.5 hours in inertia protects gas, is protected
Temperature is 65 DEG C, and nanometer copper solution is made；
(4) the hot superconduction working medium of normal temperature is prepared：Obtained main transfer substrate working medium, augmentation of heat transfer alcoholic solution and Nanometer Copper is molten
Liquid mixes, and accelerates to merge using ultrasonic wave, realization is sufficiently mixed, and is then incubated 60 DEG C, pressurize 5MPa, continues the heat-insulation pressure keeping time
2 hours, the hot superconduction working medium of normal temperature is made, treats that the hot superconduction working medium of normal temperature is stable, is stored in vacuum tank, it is standby.
In other embodiments, polyalcohol can also be a propane diols, two propyl alcohol of contracting, neopentyl glycol or pentaerythrite
Deng.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, without departing from the inventive concept of the premise, can also make some changes, improvements and modifications, and these change, improve and moistened
Decorations also should be regarded as protection scope of the present invention.
Claims (9)
- A kind of 1. super heat-transfer working medium of normal temperature, it is characterised in that：It is by main transfer substrate working medium, augmentation of heat transfer alcoholic solution and Nanometer Copper Solution composition；The main transfer substrate working medium includes monochlorodifluoromethane, iso-butane and ether；The augmentation of heat transfer alcoholic solution is that titanium trichloride solution dissolving is respectively adopted again by potassium bichromate crystal and beryllium oxide crystal Mixing is reacted, the alcoholic solution that the mixed crystal of gained is dissolved in absolute ethyl alcohol and formed with urea；The nanometer copper solution is using neopelex as dispersant, in polyalcohol by copper acetate and potassium borohydride It is prepared.
- 2. the super heat-transfer working medium of normal temperature according to claim 1, it is characterised in that：The main transfer substrate working medium, strengthen biography The volume ratio of hot alcoholic solution and nanometer copper solution is 88~92：3.5~4.5：5~7.
- 3. the super heat-transfer working medium of normal temperature according to claim 2, it is characterised in that：Difluoro one in the main transfer substrate working medium The volume ratio of chloromethanes, iso-butane and ether is 38~41:52~56:4.5~6.
- 4. the super heat-transfer working medium of normal temperature according to claim 3, it is characterised in that：The polyalcohol be ethylene glycol, hexylene glycol, One propane diols, butanediol, two propyl alcohol of contracting, neopentyl glycol or pentaerythrite.
- A kind of 5. preparation method of the super heat-transfer working medium of any one of Claims 1 to 4 normal temperature, it is characterised in that：Including following Step：(1) main transfer substrate working medium is prepared：Monochlorodifluoromethane, iso-butane and ether are mixed in constant temperature and pressure closed container, Main transfer substrate working medium is made；(2) augmentation of heat transfer alcoholic solution is prepared：Potassium bichromate crystal is added into the dissolving of titanium trichloride saturated solution completely respectively first, Beryllium oxide is added into the dissolving of titanium trichloride saturated solution completely, then again mixed the two, and is stirred, stratification, from Heart separation obtains mixed crystal, then low temperature drying mixed crystal, takes the mixed crystal after drying to add absolute ethyl alcohol dilution, then Urea is added, is stirred, crystal to be mixed all dissolves, and augmentation of heat transfer alcoholic solution is made；(3) nanometer copper solution is prepared：Copper acetate is dissolved in polyhydric alcohol solutions first, it is polynary that stirring and dissolving is formed uniformly copper acetate Alcoholic solution, then neopelex is dissolved in copper acetate polyhydric alcohol solutions；Then sodium hypophosphite is dissolved in polyalcohol In, stirring and dissolving is formed uniformly sodium hypophosphite polyhydric alcohol solutions, and it is polynary that sodium hypophosphite polyhydric alcohol solutions are added into copper acetate afterwards In alcoholic solution, it is slowly stirred after reaction, is incubated in inertia protects gas, nanometer copper solution is made；(4) the hot superconduction working medium of normal temperature is prepared：Obtained main transfer substrate working medium, augmentation of heat transfer alcoholic solution and nanometer copper solution are filled Divide mixing, then heat-insulation pressure keeping, the hot superconduction working medium of normal temperature is made.
- 6. preparation method according to claim 5, it is characterised in that：In the step (1), in constant temperature and pressure closed container Pressure is 4~8MPa, and thermostat temperature is 85~95 DEG C, and constant temperature time is 45~50 minutes.
- 7. preparation method according to claim 6, it is characterised in that：In the step (2), mixed crystal low temperature drying temperature Degree is 40~45 DEG C.
- 8. preparation method according to claim 7, it is characterised in that：In the step (3), it is incubated in inertia protects gas 2~2.5 hours, holding temperature was 58~65 DEG C.
- 9. preparation method according to claim 8, it is characterised in that：In the step (4), 58~65 DEG C are incubated, pressurize 4 ~6MPa, 2~2.5 hours heat-insulation pressure keeping time.
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Application publication date: 20180123 |