CN106556621A - The method of the heat dispersion detection of the detection means and Graphene paraffin composite of the heat dispersion of phase-change material - Google Patents
The method of the heat dispersion detection of the detection means and Graphene paraffin composite of the heat dispersion of phase-change material Download PDFInfo
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- CN106556621A CN106556621A CN201611108426.4A CN201611108426A CN106556621A CN 106556621 A CN106556621 A CN 106556621A CN 201611108426 A CN201611108426 A CN 201611108426A CN 106556621 A CN106556621 A CN 106556621A
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Abstract
The invention discloses a kind of detection means of the heat dispersion of phase-change material, including thermal insulation board, thin slice heating film, phase-change material cube module and thermocouple, make thermal insulation board and phase-change material cube module package structure be formed to thin slice heating film, the temperature of phase-change material cube module is detected by thermocouple.The invention also discloses a kind of method of the heat dispersion detection of Graphene paraffin composite, using the detection means of the heat dispersion of phase-change material of the present invention, by the side for having Graphene paraffinized sample upward, connection circuit applies constant thermal power to heating film, and detect and record the temperature change of thermocouple at regular intervals, by statistical data analysis, temperature variation curve of the Graphene/paraffin composite under given power is analyzed.The present invention can test out the Graphene/paraffin composite radiating effect of different proportion, the heat dispersion of the Graphene/paraffin composite of energy series ground relative analyses different proportion more convenient, exactly.
Description
Technical field
The present invention relates to the detection means and method of a kind of thermophysical property of Heat Conduction Material, more particularly to a kind of heat pipe
The detection means and method of the heat dispersion of reason material, is applied to the thermal management materials and its applied technical field of electronic device.
Background technology
, mainly by the radiating of material and phase-change accumulation energy realizing, paraffin is used as a kind of phase-change material for current battery heat management
With larger latent heat of phase change, when the temperature increases, which can inhale substantial amounts of heat by phase transformation, relatively steady so as to keeping temperature
It is fixed.Other phase-change materials are compared, paraffin also has stable chemical nature, and without separation and corrosivity, steam pressure bottom, price are low
Honest and clean the advantages of；Different phase-change materials are used as the action effect of heat management and will be detected by testing, and detection content mainly includes phase
Material becomes latent heat performance and heat conductivility etc., and the main method of detection battery thermal management material combination property has at present：
1. directly it is filled in the middle of set of cells with olefin material, is then turn on power supply, detects set of cells operationally at any time
Maximum temperature change；This method can be by set of cells internal temperature change in actual use, contrasting different materials
The quality of performance in terms of battery thermal management, but required experiment equipment is more expensive and cumbersome, operates nor special
Become convenient；
2. simulation analysis are carried out by software, contrast conventional battery structure, set up conduction model, provided to simulating thermal source
Certain power, and give the material properties specified to packing material, comprising thermal conductivity, latent heat of phase change etc., under steady state conditions
The hot property of analytical structure.Although simulation is convenient and simple, result of calculation is difficult to accomplish completely to be consistent with actual, usually also
Need through experimental verification, analog result can only play the reference contrast effect of experiment；
3. wrapped up to simulating thermal source by using thermal management materials, then apply power；This structure is by heating
Resistance simulation power supply heat production, is wrapped up to thermal source using phase-change material, is then turn on power detecting and is contrasted in different capacity
The heat management performance of lower phase-change material；This structure is relatively simple, however it is necessary that customization paraffin stored models, and it is required
Material is more, and process is loaded down with trivial details.
The content of the invention
In order to solve prior art problem, it is an object of the invention to overcome the shortcomings of that prior art is present, there is provided a kind of
The method of the heat dispersion detection of the detection means and Graphene of the heat dispersion of phase-change material-paraffin composite, by reality
When surveying record conduct the Graphene-paraffin composite temperature change curve in diffusion radiation processes in heat, it is convenient, accurately
Test out different proportion Graphene/paraffin composite radiating effect, be accurately detected Graphene-paraffin composite wood
The heat dispersion of material.
Purpose is created to reach foregoing invention, the present invention adopts following inventive concepts：
Using the less thermal insulation board of thermal conductivity, make heat mainly diffusion outwards be conducted by paraffin based composites, detect
The temperature change that the heat dispersion change of Graphene-paraffin composite can be obtained by thermocouple measurement reflects, is used
Heating film is very thin, therefore heat, mainly from Graphene-paraffin to external diffusion, the radiating of heating film surrounding is relatively small can to neglect
Slightly.Paraffin is preferably fitted with heating film by heating and melting resolidification, reduces impact of the interfacial air presence to test result, adopts
With the integrated testability better performances of the method, the Graphene/paraffin that can test out different proportion more convenient, exactly is combined
The radiating effect of material.
Conceived according to foregoing invention, the present invention adopts following technical proposals：
A kind of detection means of the heat dispersion of phase-change material, including calandria and thermocouple, using thermal insulation board as dress
Put substrate, the low thermal conductivity of thermal insulation board in the thermal conductivity of phase-change material to be measured, using thin slice heating film as calandria heat-insulated
Heat source region is formed on plate, thin slice heating film is connected with the circuit of external power source by connecting wire, thermocouple is fixedly installed
In between thermal insulation board and thin slice heating film, making connecting wire from the interlayer gap of thermal insulation board and phase-change material cube module
Reach outside device, phase-change material is made the phase-change material cube module of the block or tabular being sized, phase transformation material
Material projected area of cube module on thermal insulation board is equal to projected area of the thin slice heating film on thermal insulation board, make thermocouple and
Thin slice heating film is fixedly installed between thermal insulation board and phase-change material cube module, and makes thermal insulation board and phase-change material cube
Module forms package structure to thin slice heating film, and phase-change material cube module is closely connected with thin slice heating film, and formation is led
Heat bridge, and make phase-change material cube module keep not contacting with any foreign object, phase-change material cube is detected by thermocouple
The temperature of module.
Used as currently preferred technical scheme, thermocouple at least adopts two, in thermal insulation board and phase-change material cube
Diverse location in the interlayer of module arranges each thermocouple, makes each thermocouple in the thermal source area being uniformly set on thermal insulation board
In the range of domain, to measure the temperature of the different measuring point of heat source region in real time.
Used as the further preferred technical scheme of such scheme, the diameter control of the thermometric thermocouple wire of thermocouple exists
Within 0.5mm, the THICKNESS CONTROL of thin slice heating film is within 0.5mm.
As the further preferred technical scheme of such scheme, thermal insulation board and thin slice heating are fixed by two-sided tape
Film, two-sided tape select high temperature resistant type, can guarantee that the caking property of at least glue of two-sided tape at 100 DEG C firmly, make by double
The linkage interface that face adhesive tape is constituted is occurred without and is released.
A kind of method of the heat dispersion detection of Graphene-paraffin composite, key step are as follows：
A. the paraffin and Graphene of uniform mixing setting proportioning, prepares Graphene-paraffin composite, and by Graphene-
Paraffin composite makes the Graphene-paraffin composite cube module being sized, stand-by as sample；
B. prepare low thermal conductivity in the thermal insulation board of paraffin refined wax, the thermal conductivity of the low thermal conductivity paraffin of thermal insulation board, using thickness
Thin slice heating film within 0.5mm, makes the Graphene-paraffin composite cube module prepared in step a
Side area and thin slice heating film area equation, thin slice heating film is connected with the circuit of external power source by connecting wire,
Under the conditions of the temperature change in the range of room temperature to 100 DEG C, the fluctuation of the material resistance of adopted thin slice heating film thin slice close to
0, within a diameter of 0.5mm of the thermocouple wire of thermocouple；Graphene-paraffin composite thermal conductivity ratio paraffin refined wax is high, every
Hot plate thermal conductivity selects lower than paraffin；Heating film selection is stablized in 100 DEG C, resistance fluctuation is little；Heating film thickness is as far as possible thin,
Such that it is able to reduce heat in the horizontal direction to the loss of surrounding；To be tried one's best thin of thermocouple wire, is placed conveniently within the middle of device；
Selected material will be repeatedly used for a long at 100 DEG C；
C. the thermocouple for adopting in stepb is fixed on using two-sided tape as device substrate by step using thermal insulation board
On the thermal insulation board prepared in rapid b, the thin slice heating film for adopting in stepb is sticked in the opposite side of two-sided tape, thermocouple is made
Between thermal insulation board and thin slice heating film；
D. the Graphene prepared in step a-paraffin composite cube module is fixedly installed on heat-insulated
On plate, the Graphene prepared in step a-projected area of the paraffin composite cube module on thermal insulation board is made
Equal to projected area of the thin slice heating film on thermal insulation board, the connecting wire of thin slice heating film is made from thermal insulation board and Graphene-stone
Reach outside device in the interlayer gap of wax composite cube module, make thin slice heating film as calandria in thermal insulation board
Upper formation heat source region, and make thermal insulation board and Graphene-paraffin composite cube module form parcel to thin slice heating film
Structure, Graphene-paraffin composite cube module is closely connected with thin slice heating film, is formed heat-conductive bridges, and is made graphite
Alkene-paraffin composite cube module keeps not contacting with any foreign object, is assembled into the radiating of Graphene-paraffin composite
The detection means of performance；
E. the detection of the heat dispersion of the Graphene of the phase-change material assembled in step d-paraffin composite is filled
Desktop is placed in, Graphene-paraffin composite cube module side is made upward, makes thin slice heating film obtain connecting wire connection
The output circuit of external power source, applies firm power using external power source, and detects and record thermocouple every setting time and adopt
The temperature data of collection；
F. the temperature data of thermocouple collection is analyzed, the Graphene-paraffin for obtaining setting proportioning under setting power is multiple
The temperature variation curve and final temperature numeric data of condensation material, obtains setting the Graphene-paraffin composite wood of proportioning from analysis
The heat dispersion data of material.
As the further preferred technical scheme of such scheme, in step a, Graphene-paraffin composite is prepared
Cube module is will to melt and Graphene-olefin material of mix homogeneously adds ready mould, and molding is made tested
Then measured material sample is cooled to room temperature, then removes unnecessary material, and polished with fine sandpaper by material sample at normal temperatures
Surface is polished flat, the Graphene-paraffin composite cube module of required size is obtained.Prepare cube testing sample
It is will to melt and in the Graphene-ready model of olefin material addition of mix homogeneously, as composite is received after hardening
Shrinkage is than larger, so Design of Dies volume when paraffin sill is added in mould, will be more than, instance model is cold at normal temperatures
But room temperature is arrived, redundance is then removed and the standard size material sample needed for obtaining of slowly being polished with fine sandpaper, is made sample
The material of product mould can bear 150 DEG C of high temperature.
It is as the further preferred technical scheme of such scheme, in stepb, using at least two thermocouples, multiple
Thermocouple location carries out being uniformly distributed setting；Finally in step f, the temperature of the different points for measuring temperature collected by multiple thermocouples
Degrees of data, can obtain the inspection of the heat dispersion of Graphene-paraffin composite according to the temperature averages of multiple thermocouples collection
Survey the mean temperature of the zone line of heat source region on the thermal insulation board of device.
As the further preferred technical scheme of such scheme, in step d, first by Graphene-paraffin composite
Cube module is placed in the thin slice heating film for fixing, and the connecting wire of thin slice heating film is connected external power source then,
Apply certain power on Graphene-paraffin composite cube module simultaneously, make Graphene-paraffin composite cube
Module and thermal insulation board are brought into close contact, and after Graphene-paraffin composite cube Modular surface starts to melt, reheat setting
A period of time, be then turned off external power source, make in Graphene-paraffin composite cube module air at room temperature from
So cool down, by the solidification of Graphene-paraffin composite cube module, make Graphene-paraffin composite cube mould
The linkage interface close and firm of block and thermal insulation board, forms package structure to thin slice heating film.
Used as the further preferred technical scheme of such scheme, in stepb, heat-insulated plate surface has set point
Roughness, plus thin slice heating film is using being made using flexible material, thin slice heating film can provide the thermal power within 5W and hold
Kept stable by least 100 DEG C of high temperature, the material of thermocouple can bear at least 100 DEG C of high temperature.
As the further preferred technical scheme of such scheme, in step d, when the thin slice being fixed on thermal insulation board adds
Hotting mask local eminence or depression and when forming out-of-flatness surface configuration, then by Graphene-paraffin composite cube module
Before being fixedly installed on thermal insulation board, according to the surface configuration of the thin slice heating film being fixed on thermal insulation board, first to Graphene-stone
The surface configuration of wax composite cube module is repaired, and makes the surface of Graphene-paraffin composite cube module
Shape is adapted to the surface configuration of thin slice heating film, then again by Graphene-paraffin composite cube module be fixed on every
On hot plate, the detection means of the heat dispersion of Graphene-paraffin composite is assembled into.
The present invention compared with prior art, obviously projects substantive distinguishing features and remarkable advantage with following：
1. the method for the heat dispersion detection of Graphene of the present invention-paraffin composite passes through thermal insulation board and Graphene-stone
Package action of the wax composite to heating film, ensure that the heat that heating film is produced is mainly compound by Graphene-paraffin
Material spreads, so that it is guaranteed that the heat dispersion change of paraffin based composites can interfere significantly on the inside temperature of test structure
Degree；
2. the present invention obtains the mean temperature of heat source region by being wrapped in the thermocouple measurement in real time of internal layer diverse location,
In paraffin refined wax, it is lost by thermal insulation board to limit heat for the low thermal conductivity of thermal insulation board, used in test process two or two with
Upper thermocouple is primarily to try to achieve the temperature of heating film different parts, it is to avoid the occasionality of single thermocouple, by double faced adhesive tape
Connection heating film and thermal insulation board, paraffin will discharge air that may be present when fixation, on the one hand discharge and allow Graphene-paraffin
Connection between composite and heating film is more stable, while interference of the air to the result that radiates can also be excluded；
3. the present invention ensure that testing result is real-time, accurately measure the heat dispersion for obtaining paraffin based composites,
And the device in the inventive method can be used for multiple times, the Graphene/paraffin composite wood of series ground relative analyses different proportion
The heat dispersion change of material.
Description of the drawings
Axonometric chart and respective side of the Fig. 1 for the detection means of the heat dispersion of one phase-change material of the embodiment of the present invention.
Axonometric chart and respective side of the Fig. 2 for the heat insulation plate structure of the embodiment of the present invention one.
Axonometric chart and respective side of the Fig. 3 for the thin slice heating membrane structure of the embodiment of the present invention one.
Fig. 4 is regarded for the axonometric chart and corresponding side of the Graphene-paraffin composite cube module of the embodiment of the present invention one
Figure.
Specific embodiment
Details are as follows for the preferred embodiments of the present invention：
Embodiment one：
In the present embodiment, referring to Fig. 1～4, a kind of detection means of the heat dispersion of phase-change material, including calandria and
Thermocouple 5, using thermal insulation board 1 as device substrate, thermal insulation board 1 is made using glass fibre based composites, and thermal insulation board 1 is led
Heating rate on thermal insulation board 1 forms thermal source area as calandria using thin slice heating film 2 less than the thermal conductivity of phase-change material to be measured
Domain, 2 polyimide heater film of thin slice heating film are made, and circuit of the thin slice heating film 2 by connecting wire 3 with external power source connects
Connect, thermocouple 5 is fixedly installed between thermal insulation board 1 and thin slice heating film 2, connecting wire 3 is made from thermal insulation board 1 and phase transformation material
Reach outside device in the interlayer gap of material cube module 4, phase-change material is made the phase transformation material of the bulk being sized
Material cube module 4, the projected area of phase-change material cube module 4 on thermal insulation board 1 etc. are with thin slice heating film 2 in thermal insulation board
Projected area on 1, make thermocouple 5 and thin slice heating film 2 be fixedly installed on thermal insulation board 1 and phase-change material cube module 4 it
Between, and make thermal insulation board 1 and phase-change material cube module 4 form package structure to thin slice heating film 2, by phase-change material cube
Module 4 is closely connected with thin slice heating film 2, formed heat-conductive bridges, and make phase-change material cube module 4 keep not with any foreign object
Contact, detects the temperature of phase-change material cube module 4 by thermocouple 5.
In the present embodiment, referring to Fig. 1, thermocouple 5 adopts two, in thermal insulation board 1 and phase-change material cube module 4
Diverse location in interlayer is correspondingly arranged two thermocouples 5, two thermocouples 5 is being uniformly set on thermal insulation board 1
In the range of heat source region, to measure the temperature of the different measuring point of heat source region in real time.The diameter of the thermometric thermocouple wire of thermocouple 5
Within 0.5mm, the THICKNESS CONTROL of thin slice heating film 2 is within 0.5mm for control.
In the present embodiment, referring to Fig. 1, thermal insulation board 1 and thin slice heating film 2, two-sided tape choosing are fixed by two-sided tape
High temperature resistant type is selected, the caking property of the glue of two-sided tape at 100 DEG C is can guarantee that firmly, connection circle constituted by two-sided tape is made
Face occurs without and releases.
In the present embodiment, referring to Fig. 1～4, using the detection means of the heat dispersion of the present embodiment phase-change material, implement
The method of the heat dispersion detection of Graphene-paraffin composite, key step are as follows：
A. a certain amount of paraffin is incubated into a period of time in 120 DEG C of calorstats, after paraffin melts completely, according to one
The different mixed proportion addition Graphene of series, and it is uniform using magnetic stirrer, prepare a series of stone of composition proportion
Black alkene-paraffin composite, by the Graphene of different proportion-paraffin composite mix homogeneously after, pour the mould made into
In tool, room temperature cooling removes unnecessary part and is polished with sand paper, each Graphene-paraffin composite made a series of
The Graphene of 30*30mm-paraffin composite cube module 4, it is stand-by respectively as sample；Mould therefor is due to containing
Liquid paraffin is put, therefore wants to bear 150 DEG C of high temperature, and will be easy to take out the model of solidification, so quality should not be too
Firmly, Teflon material, size is selected to customize according to actual test demand；
B. prepare low thermal conductivity in the thermal insulation board 1 of paraffin refined wax, thermal insulation board 1 is made using glass fibre based composites, glass
The thermal conductivity of the low thermal conductivity paraffin of glass fiber-base composite materials, the thin slice heating film 2 using thickness within 0.5mm, thin slice
2 polyimide heater film of heating film is made, and makes the Graphene-paraffin composite cube mould prepared in step a
The side area of block and the area equation of thin slice heating film, circuit of the thin slice heating film 2 by connecting wire 3 with external power source connect
Connect, under the conditions of the temperature change in the range of room temperature to 100 DEG C, using 2 thin slice of thin slice heating film material resistance fluctuation connect
0 is bordering on, resistance fluctuation is less, within a diameter of 0.5mm of the thermocouple wire of thermocouple 5；Graphene-paraffin composite heat conduction
Rate is higher than paraffin refined wax, and thermal insulation board thermal conductivity selects lower than paraffin；Heating film selects stable in 100 DEG C, and resistance fluctuation is little, with
Just adapt to measurement demand；Heating film thickness is as far as possible thin, such that it is able to reduce heat in the horizontal direction to the loss of surrounding diffusion；
It is thin that thermocouple wire is tried one's best, and is placed conveniently within the middle of device, and reduces the irregularities on 2 surface of thin slice heating film；It is selected
Material will be repeatedly used for a long at 100 DEG C；
C. the thermocouple 5 for adopting in stepb is fixed on using two-sided tape as device substrate using thermal insulation board 1
On the thermal insulation board 1 prepared in step b, the thin slice heating film 2 for adopting in stepb is sticked in the opposite side of two-sided tape, heat is made
Galvanic couple 5 is between thermal insulation board 1 and thin slice heating film 2；
D. the Graphene prepared in step a-paraffin composite cube module 4 is fixedly installed on into thermal insulation board 1
On, make the Graphene prepared in the step a-projected area of paraffin composite cube module on thermal insulation board etc.
In projected area of the thin slice heating film on thermal insulation board, the connecting wire 3 of thin slice heating film 2 is made from thermal insulation board 1 and Graphene-stone
Reach outside device in the interlayer gap of wax composite cube module 4, make thin slice heating film 2 as calandria heat-insulated
Heat source region is formed on plate 1, and thermal insulation board 1 and Graphene-paraffin composite cube module 4 is made to 2 shape of thin slice heating film
Into package structure, Graphene-paraffin composite cube module 4 is closely connected with thin slice heating film 2, forms heat-conductive bridges,
And make Graphene-paraffin composite cube module 4 keep not contacting with any foreign object, it is assembled into Graphene-paraffin and is combined
The detection means of the heat dispersion of material；
E. the detection of the heat dispersion of the Graphene of the phase-change material assembled in step d-paraffin composite is filled
Desktop is placed in, Graphene -4 side of paraffin composite cube module is made upward, makes thin slice heating film 2 obtain connecting wire 3
The output circuit of connection external power source, applies firm power using external power source, and detected every 5 minutes and record a thermoelectricity
The temperature data of even 5 collection；
F. statistical analysiss thermocouple 5 collection different ratio paraffin and Graphene-paraffin composite wood made by Graphene
The temperature data of material cube module 4, obtains the temperature of the Graphene-paraffin composite of variant proportioning under setting power
Degree change curve and final temperature numeric data, obtain the thermal diffusivity of the Graphene-paraffin composite of different ratio from analysis
Can data.
In the present embodiment, referring to Fig. 1 and Fig. 4, in step a, prepare Graphene-paraffin composite cube module
During 4 are the Graphene-ready mould of olefin material addition for will melt simultaneously mix homogeneously, measured material sample is made in molding,
Then measured material sample is cooled to into room temperature at normal temperatures, then removes unnecessary material, and surface is beaten with fine sandpaper polishing
Polish whole, obtain the Graphene-paraffin composite cube module 4 of required size.It is to melt to prepare cube testing sample
Change and the Graphene-olefin material of mix homogeneously adds ready model, due to composite shrinkage ratio after hardening
It is larger, so Design of Dies volume will be more than when paraffin sill is added in mould, instance model is cooled to room at normal temperatures
Temperature, then removes redundance and the standard size material sample needed for obtaining of slowly being polished with fine sandpaper, makes sample molds
Material can bear 150 DEG C of high temperature.
In the present embodiment, referring to Fig. 1, in stepb, using two thermocouples 5, two 5 positions of thermocouple are carried out
Even distribution is arranged；Finally in step f, the temperature data of the different points for measuring temperature collected by two thermocouples 5 can be according to two
The temperature averages of the collection of individual thermocouple 5, obtain the thermal insulation board of the detection means of the heat dispersion of Graphene-paraffin composite
The mean temperature of the zone line of heat source region on 1.
In the present embodiment, referring to Fig. 1 and Fig. 3, in step d, first by Graphene-paraffin composite cube module
4 are placed in the thin slice heating film 2 for fixing, and the connecting wire 3 of thin slice heating film 2 is connected external power source then, while
Apply certain power on Graphene-paraffin composite cube module 4, make Graphene-paraffin composite cube module 4
Be brought into close contact with thermal insulation board 1, after Graphene -4 surface of paraffin composite cube module start melt after, then remain powered on plus
Heat system two minutes, is then turned off external power source, in making Graphene-air at room temperature of paraffin composite cube module 4
Natural cooling, by the solidification of Graphene-paraffin composite cube module 4, after device is cooled to room temperature, makes graphite
The linkage interface close and firm of alkene-paraffin composite cube module 4 and thermal insulation board 1, forms parcel knot to thin slice heating film 2
Structure.The present embodiment in fixed Graphene-paraffin composite cube module 4, by Graphene-paraffin composite cube
Module 4 is placed in the thin slice heating film 2 for fixing, and is switched on power while in Graphene-paraffin composite cube module 4
It is upper to apply certain power, continue heating one after the paraffin on Graphene -4 surface of paraffin composite cube module starts to melt
The section time is then turned off power supply, connects both by the solidification of paraffin, and it is to discharge air that may be present to apply external force, is made
Connection more closely, makes linkage interface more stable firmly.
In the present embodiment, referring to Fig. 1 and Fig. 2, in stepb, 1 surface of thermal insulation board has rough surface, be conducive to every
Hot plate 1 fixes thin slice heating film 2 and thermocouple 5, plus thin slice heating film 2 using making using flexible material, in order to lay heat
Galvanic couple, thin slice heating film 2 can provide the thermal power within 5W and bear 100 DEG C of high temperature and keep stable, the material of thermocouple 5
Matter can bear 100 DEG C of high temperature, and each part of device being capable of Reusability, it is ensured that device service life, reduces testing cost.
In the present embodiment, it is referring to Fig. 1～4, ready thin slice heating film 2 is solid with thermal insulation board 1 by two-sided tape
It is fixed, while thermocouple 5 is fixed between thin slice heating film 2 and thermal insulation board 1；Then by a certain amount of paraffin in 120 DEG C of constant temperature
Insulation a period of time in case, add Graphene after paraffin melts completely, and it is uniform using magnetic stirrer；Then will
After the Graphene of different proportion-paraffin composite mix homogeneously, pour in the mould made, room temperature cooling is removed many
Remaining part is simultaneously polished with sand paper, makes cube test sample；The composite wax stone made is fitted in thin slice again to add
On hotting mask 2, electrified regulation system two minutes is applying certain pressure simultaneously, then power-off cooling, make Graphene-olefin material with
Tightly fix well by laminating for thin slice heating film 2；Start test after device is cooled to room temperature, one is applied to thin slice heating film 2
Determine power and by 5 real-time monitoring temperature change of thermocouple, every the temperature value of 5 minutes records once two thermocouples 5；Statistics
Different content Graphene-paraffin composite apply identical power conditions under internal temperature change, draw different Graphenes-
The heat dispersion comparative analysiss data of paraffin composite.
The present embodiment fixes thermal insulation board 1 and thin slice heating film 2 by double faced adhesive tape, at the same by two thermocouples 5 be fixed on every
In the middle of hot plate 1 and thin slice heating film 2, two thermocouples 5 are uniformly distributed, by the meansigma methodss of two thermocouples 5 estimating in test process
The mean temperature at device bosom position is calculated, the double faced adhesive tape of selection is high temperature resistant type, and caking property is sufficiently tight at 100 DEG C,
In order to avoid occurring coming off in experimental test, the repeatable accuracy of experiment is affected.In test process, placing graphite alkene-paraffin is combined
The side of material cubic module 4 and air contact, 1 side of thermal insulation board can be used to support fixed test device, Graphene-stone
The side outwardly of wax composite cube module 4 should not be contacted with foreign object, prevented to vertical by Graphene-paraffin composite
The heat of cube module 4 scatters and disappears and produces impact, so as to affect test result.The present embodiment apparatus and method can it is more convenient,
The radiating effect of the Graphene-paraffin composite of different proportion is tested out exactly.In the present embodiment method of testing, adopt
The less thermal insulation board 1 of thermal conductivity, makes heat mainly outwards conduct diffusion by paraffin based composites, so Graphene-paraffin
The temperature change that the heat dispersion change of composite can be obtained by thermocouple measurement reflects.In the present embodiment method of testing
In, the thin slice heating film 2 for being used is very thin, therefore heat is mainly from the Graphene-paraffin on top to external diffusion, thin slice heating
The radiating of 2 surrounding of film is relatively small can be ignored.Paraffin is preferably fitted with heating film by heating and melting resolidification, reduces interface
There are the impact to test result, the integration test better performances of the present embodiment method of testing in air.
Embodiment two：
The present embodiment is essentially identical with embodiment one, is particular in that：
In the present embodiment, using 3 thermocouples 5, two 5 positions of thermocouple carry out being uniformly distributed setting；Finally in step
In rapid f, the temperature data of the different points for measuring temperature collected by 3 thermocouples 5 can be put down according to the temperature of 3 collections of thermocouple 5
Average, the zone line of heat source region on the thermal insulation board 1 of the detection means for obtaining the heat dispersion of Graphene-paraffin composite
Mean temperature, reduce test error.
Embodiment three：
The present embodiment is substantially the same as in the previous example, and is particular in that：
In the present embodiment, when 2 local eminence of thin slice heating film or depression that are fixed on thermal insulation board 1 form out-of-flatness
During surface configuration, then before Graphene-paraffin composite cube module 4 is fixedly installed on thermal insulation board 1, according to solid
The surface configuration of the thin slice heating film 2 being scheduled on thermal insulation board 1, the first surface to Graphene-paraffin composite cube module 4
Shape is repaired, and makes the surface configuration of Graphene-paraffin composite cube module 4 and the surface shape of thin slice heating film 2
Shape is adapted to, and then again Graphene-paraffin composite cube module 4 is fixed on thermal insulation board 1, Graphene-stone is assembled into
The detection means of the heat dispersion of wax composite.In the present embodiment, due to the possible out-of-flatness in 2 surface of thin slice heating film, because
This in fixed Graphene-paraffin composite cube module 4, can according to 2 surface configuration of thin slice heating film first to Graphene-
4 surface of paraffin composite cube module carries out simple finishing and then fixes again, makes device have more practicality.
The embodiment of the present invention is illustrated above in conjunction with accompanying drawing, but the invention is not restricted to above-described embodiment, can be with
The purpose of innovation and creation of the invention makes various changes, under all spirit and principle according to technical solution of the present invention
Change, modification, replacement, combination or the simplification made, should be equivalent substitute mode, as long as meeting the goal of the invention of the present invention,
The heat dispersion inspection of the detection means and Graphene without departing from the heat dispersion of phase-change material of the present invention-paraffin composite
The know-why of the method for survey and inventive concept, belong to protection scope of the present invention.
Claims (10)
1. a kind of detection means of the heat dispersion of phase-change material, including calandria and thermocouple (5), it is characterised in that：Using
Thermal insulation board (1) is heated using thin slice in the thermal conductivity of phase-change material to be measured as device substrate, the low thermal conductivity of thermal insulation board (1)
Film (2) forms heat source region on thermal insulation board (1) as calandria, and thin slice heating film (2) is by connecting wire (3) and external electrical
The circuit connection in source, thermocouple (5) is fixedly installed between thermal insulation board (1) and thin slice heating film (2), connecting wire is made
(3) reach outside device from the interlayer gap of thermal insulation board (1) and phase-change material cube module (4), by phase-change material system
Into the phase-change material cube module (4) of the block or tabular being sized, phase-change material cube module (4) is in thermal insulation board
(1) projected area with thin slice heating film (2) on thermal insulation board (1) such as projected area on, makes thermocouple (5) and thin slice heating
Film (2) is fixedly installed between thermal insulation board (1) and phase-change material cube module (4), and makes thermal insulation board (1) and phase-change material vertical
Cube module (4) forms package structure to thin slice heating film (2), by phase-change material cube module (4) and thin slice heating film (2)
Closely connect, form heat-conductive bridges, and make phase-change material cube module (4) keep not contacting with any foreign object, by thermocouple
(5) detect the temperature of phase-change material cube module (4).
2. the detection means of the heat dispersion of phase-change material according to claim 1, it is characterised in that：Thermocouple (5) is at least
Using two, the diverse location in the interlayer of thermal insulation board (1) and phase-change material cube module (4) arranges each thermocouple (5),
Each thermocouple (5) is made in the range of the heat source region being uniformly set on thermal insulation board (1), to measure heat source region in real time
The temperature of different measuring point.
3. the detection means of the heat dispersion of phase-change material according to claim 1 or claim 2, it is characterised in that：Thermocouple (5)
, within 0.5mm, the THICKNESS CONTROL of thin slice heating film (2) is within 0.5mm for the diameter control of thermometric thermocouple wire.
4. the detection means of the heat dispersion of phase-change material according to claim 1 or claim 2, it is characterised in that：By double faced adhesive tape
The fixed thermal insulation board (1) of band and thin slice heating film (2), two-sided tape select high temperature resistant type, can guarantee that the double faced adhesive tape at least at 100 DEG C
The caking property of the glue of band firmly, occurs without the linkage interface consisted of two-sided tape and releases.
5. the method that a kind of heat dispersion of Graphene-paraffin composite is detected, it is characterised in that key step is as follows：
A. the paraffin and Graphene of uniform mixing setting proportioning, prepares Graphene-paraffin composite, and by Graphene-paraffin
Composite makes the Graphene-paraffin composite cube module being sized, stand-by as sample；
B. prepare low thermal conductivity in the thermal insulation board of paraffin refined wax, the thermal conductivity of the low thermal conductivity paraffin of thermal insulation board, existed using thickness
Thin slice heating film within 0.5mm, the Graphene-paraffin composite cube module for making to prepare in step a
The area equation of side area and thin slice heating film, thin slice heating film are connected with the circuit of external power source by connecting wire,
Under the conditions of temperature change in the range of room temperature to 100 DEG C, the material resistance of adopted thin slice heating film thin slice fluctuates close to 0,
Within a diameter of 0.5mm of the thermocouple wire of thermocouple；
C. the thermocouple adopted in step b is fixed on using two-sided tape as device substrate by institute using thermal insulation board
On the thermal insulation board prepared in stating step b, the thin slice heating film adopted in step b is sticked in the opposite side of two-sided tape,
Thermocouple is made to be between thermal insulation board and thin slice heating film；
D. the Graphene prepared in step a-paraffin composite cube module is fixedly installed on thermal insulation board,
It is equal to the Graphene prepared in step a-projected area of the paraffin composite cube module on thermal insulation board
Projected area of the thin slice heating film on thermal insulation board, makes the connecting wire of thin slice heating film multiple from thermal insulation board and Graphene-paraffin
Reach outside device in the interlayer gap of condensation material cube module, make thin slice heating film as calandria the shape on thermal insulation board
Into heat source region, and thermal insulation board and Graphene-paraffin composite cube module is made to form package structure to thin slice heating film,
Graphene-paraffin composite cube module is closely connected with thin slice heating film, heat-conductive bridges is formed, and is made Graphene-stone
Wax composite cube module keeps not contacting with any foreign object, is assembled into the heat dispersion of Graphene-paraffin composite
Detection means；
E. the detection of the heat dispersion of the Graphene of the phase-change material assembled in step d-paraffin composite is filled
Desktop is placed in, Graphene-paraffin composite cube module side is made upward, makes thin slice heating film obtain connecting wire connection
The output circuit of external power source, applies firm power using external power source, and detects and record thermocouple every setting time and adopt
The temperature data of collection；
F. the temperature data of thermocouple collection is analyzed, the Graphene-paraffin composite wood of the setting proportioning under setting power is obtained
The temperature variation curve and final temperature numeric data of material, obtains the Graphene-paraffin composite of setting proportioning from analysis
Heat dispersion data.
6. the method that the heat dispersion of Graphene-paraffin composite is detected according to claim 5, it is characterised in that：
In step a, it is to melt the Graphene-paraffin of simultaneously mix homogeneously to prepare Graphene-paraffin composite cube module
During material adds ready mould, measured material sample is made in molding, is then cooled to measured material sample at normal temperatures
Room temperature, then unnecessary material is removed, and surface is polished flat with fine sandpaper polishing, obtain the Graphene-paraffin of required size
Composite cube module.
7. the method that the heat dispersion of Graphene-paraffin composite is detected according to claim 5, it is characterised in that：
In step b, using at least two thermocouples, multiple thermocouple locations carry out being uniformly distributed setting；Finally in step f
In, the temperature data of the different points for measuring temperature collected by multiple thermocouples can be according to the temperature-averaging of multiple thermocouples collection
Value, the zone line of heat source region on the thermal insulation board of the detection means for obtaining the heat dispersion of Graphene-paraffin composite
Mean temperature.
8. the method that the heat dispersion of Graphene-paraffin composite is detected according to claim 5, it is characterised in that：
In step d, first in the thin slice heating film for fixing, then Graphene-paraffin composite cube module is placed on
The connecting wire of thin slice heating film is connected into external power source, while applying on Graphene-paraffin composite cube module
Certain power, is brought into close contact Graphene-paraffin composite cube module and thermal insulation board, treats Graphene-paraffin composite wood
After material cube Modular surface starts to melt, a period of time of setting is reheated, external power source is then turned off, is made Graphene-stone
Natural cooling in wax composite cube module air at room temperature, by Graphene-paraffin composite cube mould
The solidification of block, makes the linkage interface close and firm of Graphene-paraffin composite cube module and thermal insulation board, and thin slice is heated
Film forms package structure.
9. the method that the heat dispersion of Graphene-paraffin composite is detected according to claim 5, it is characterised in that：
In step b, heat-insulated plate surface has a roughness of set point, plus thin slice heating film is using being made using flexible material,
Thin slice heating film can provide the thermal power within 5W and bear at least 100 DEG C of high temperature and keep stable, the material of thermocouple
At least 100 DEG C of high temperature can be born.
10. the method that the heat dispersion of Graphene-paraffin composite is detected according to claim 5, it is characterised in that：
In step d, when the local eminence of thin slice heating film or depression that are fixed on thermal insulation board form out-of-flatness surface configuration,
Then before Graphene-paraffin composite cube module is fixedly installed on thermal insulation board, according to being fixed on thermal insulation board
Thin slice heating film surface configuration, first the surface configuration of Graphene-paraffin composite cube module is repaired, is made
The surface configuration of Graphene-paraffin composite cube module is adapted to the surface configuration of thin slice heating film, then again by stone
Black alkene-paraffin composite cube module is fixed on thermal insulation board, is assembled into the heat dispersion of Graphene-paraffin composite
Detection means.
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