CN109021930A - A kind of carbon aerogels composite shape-stabilized phase change energy storage material and preparation method thereof - Google Patents
A kind of carbon aerogels composite shape-stabilized phase change energy storage material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of carbon aerogels composite shape-stabilized phase change energy storage materials, MWCNT/GO aeroge including middle low temperature organic phase-change component and high thermal conductivity and high porosity, wherein, middle low temperature organic phase-change component accounts for mass fraction 80-95%, MWCNT/GO aeroge accounts for mass fraction 5-20%, and the sum of mass percent of the above components content is 100%.The invention also discloses the preparation methods of above-mentioned carbon aerogels composite shape-stabilized phase change energy storage material.The technique realizes the exploitation of low-viscosity organic phase change energy storage material, will be pushed further into the application field of 3D printing equipment and technology, and expand setting phase change energy storage material and be more widely applied.
Description
Technical field
The invention belongs to phase-changing energy storage material preparation technical fields, and in particular to a kind of carbon aerogels composite shape-setting phase transformation storage
Energy material, further relates to the preparation method of above-mentioned carbon aerogels composite shape-stabilized phase change energy storage material.
Background technique
In recent years, 3D printing technique has become the prosperity of the wests such as domestic and international research hotspot and major fields, especially America and Europe
Country especially payes attention to the research and development of 3D printing technique, this promotes the rapid development of 3D printing equipment, material and technology.3D is beaten
The development of print technology at home is also abnormal swift and violent, using Xi'an Communications University, Sichuan University and Beijing University of Chemical Technology as the 3D of representative
The research and development of equipment and technology are paid close attention to both at home and abroad comprising first in the 3D product market application of military industry field and civil field
It becomes effective；Meanwhile domestic enterprise also increases the exploitation of 3D printing equipment, technology and material, the wherein auspiciousness high-tech stock of Dongguan silver
Part Co., Ltd, Shenzhen brilliance great achievement limited liability company and Wuxi sting are received farsighted three-dimensional Science and Technology Ltd. etc. and are set about 3D
Standby, consumptive material sales volume reaches 10,000,000 yuan or more；Looking forward to the prospect industrial research institute prediction 2018 year China 3D printing market will
Reach 8,000,000,000 yuans.
Currently, in terms of 3D printing high molecular material, such as polyamide (PA), acrylnitrile-butadiene-styrene copolymer
(ABS), Biodegradable polylactic acids (PLA) etc. generally use fusion sediment 3D printing technique and carry out machine-shaping.But due to height
Molecular material has special viscoelastic behavior, so that bringing the conjugation of interlayer more difficult to control during fusion sediment, especially
It is in the case where high viscosity or low viscosity, the job efficiency of fused glass pellet is lower, hinders 3D to a certain extent and beats
Print the fast development and commercial introduction application of high molecular products.In this, it is based on fusion sediment equipment, innovatively introduces and squeezes out list
Member, forms extrusion -3D printing technique, and the 3D molding equipment and technology effectively improve the interlaminar bonding problem of high molecular products
With the inhomogenous problem of print procedure.
Setting phase change energy storage material is to be sealed phase-change material to guarantee it in neither endothermic nor exothermic process using packaging container
In leakage, while realizing the storage or release of energy.The machine polymeric phase change material of common are has polyacid, polyalcohol and gathers
The component of the high crystallization enthalpy such as ethylene；Packaging container frequently with the inorganic particle with porous structure, as multi-wall carbon tube (MWCNT),
Graphene oxide (GO), expanded graphite (EG), mesoporous silicon oxide (SiO2), diatomite etc..Currently, polyacid and polyalcohol tool
There are high phase transformation enthalpy, phase transition temperature wider (between 10-65 DEG C) and nontoxic.Therefore, for the middle low temperature of building heat preservation
Usually composite wood is made by melt blending in the porous, inorganic powder of high thermal conductivity and polyacid, polyalcohol by organic phase change material
Material, and then be reprocessed into dalle and applied.But there is also multiple problems for the product, for example, in phase transition process it is thermally conductive compared with
Difference, repeatedly circulation shape stability is insufficient, melt-processed process bring porous, inorganic powder encapsulate polyacid or polyalcohol ratio compared with
It is low, meanwhile, it is not yet found using the exploitation that 3D technology carries out organic polymer setting phase change energy storage material.
So far, Chinese patent CN 106939156A discloses a kind of situ aggregation method and prepares hexamethylene diisocyanate
(HDI)-low melt point paraffin hydrocarbon mixing capsule-core Lauxite cyst wall microcapsules are mixed using GO as encapsulating component by solution, mistake
Filter drying, and GO/ polymer shaping phase-change material is obtained through injection molding, but do not mention 3D printing technique and polyacid or polynary
The research of alcohol shaping phase-change material.In addition, Chinese patent CN 105062430A discloses a kind of polyethylene glycol (PEG)/SiO2/
The preparation method of EG composite phase-change setting energy storage material, has the EG of microcellular structure with dilatometry preparation, then will melt
PEG and EG, SiO2Mixing, infiltration encapsulation setting, finally obtains the setting phase of the high phase transformation enthalpy of high thermal conductivity under vacuum conditions
Change energy-storage material, but the patent is not directed to the research of 3D printing technique and carbon aerogels encapsulation polyacid or polyalcohol.
Summary of the invention
The object of the present invention is to provide a kind of carbon aerogels composite shape-stabilized phase change energy storage materials, solve existing organic setting
The problem that thermal conductivity of the phase-changing energy storage material in phase transition process is low and cyclic durability is poor.
It is a further object to provide the preparation methods of above-mentioned carbon aerogels composite shape-stabilized phase change energy storage material.
The first technical solution of the present invention is a kind of carbon aerogels composite shape-stabilized phase change energy storage material, including
The MWCNT/GO aeroge of middle low temperature organic phase-change component and high thermal conductivity and high porosity, wherein middle low temperature organic phase-change component
Account for mass fraction 80-95%, MWCNT/GO aeroge accounts for mass fraction 5-20%, the mass percent of the above components content it
Be 100%.
The characteristics of the first of the invention technical solution, also resides in:
MWCNT/GO aeroge, including MWCNT and GO, wherein MWCNT accounts for mass fraction 10-40%, and GO accounts for mass fraction
60-90%, the sum of mass percent of the above components content are 100%.
Middle low temperature organic phase-change group is divided into octadecanoid acid, lauric acid, myristic acid, polyethylene glycol, any in glycerine
It is a kind of.
Second of technical solution of the present invention is a kind of preparation of carbon aerogels composite shape-stabilized phase change energy storage material
Method is specifically implemented according to the following steps:
Step 1, the MWCNT/GO aeroge of high thermal conductivity and high porosity is prepared；
Step 2, the component premix of MWCNT/GO/ organic phase-change is prepared using dynamic perfusion technique；
Step 3, MWCNT/GO/ organic phase-change component premix is put into extrusion molding in extrusion -3D printing equipment
Obtain carbon aerogels composite shape-stabilized phase change energy storage material.
The characteristics of second of technical solution of the invention, also resides in:
Step 1, the specific steps are as follows:
Step 1.1, MWCNT is added in 50 DEG C~80 DEG C of GO aqueous solution, then instills acetone/ethanol solution, kept
Temperature is constant, stirs 4h~12h, obtains MWCNT/GO aqueous solution；
Wherein, the mass ratio of MWCNT and GO is 1~4:6~9；
The concentration of GO aqueous solution is 1mg/mL~8mg/mL；
The volume of acetone/ethanol solution is the 1%-5% of MWCNT and GO aqueous solution total volume；
The volume ratio of acetone and ethyl alcohol is 1:3~6 in acetone/ethanol solution；
Step 1.2, by the MWCNT/GO aqueous solution obtained after step 1.1 stand filter, later be freeze-dried 48h~
96h obtains MWCNT/GO aeroge, finally, MWCNT/GO aeroge is placed in 50 DEG C~80 DEG C of vacuum oven dry
The MWCNT/GO aeroge of high thermal conductivity and high porosity can be obtained in 4h~8h.
Step 2 specifically: by the MWCNT/GO aeroge of high thermal conductivity and high porosity and middle low temperature organic phase-change component one
It rises and is added in constant temperature electric heating set, then constant temperature electric heating set is warming up to 10 DEG C~90 DEG C, make the MWCNT/GO in constant temperature electric heating set
Aeroge melts completely with organic phase-change component, forms molten system；Temperature is kept constant later, using ultrasonator and very
Sky pump dynamic perfusion mixes 10min~45min, cooling, obtains MWCNT/GO/ organic phase-change component blend composition；Finally this is total to
Mixing is ground up, sieved, and MWCNT/GO/ organic phase-change component premix can be obtained；
Wherein, the mass ratio of middle low temperature organic phase-change component and MWCNT/GO aeroge is 8~9.5:0.5~2；
Middle low temperature organic phase-change group is divided into octadecanoid acid, lauric acid, myristic acid, polyethylene glycol, any in glycerine
It is a kind of.
The ultrasonic power of ultrasonator is 400w~1200w, and the relative degree of vacuum of vacuum pump is -10kPa~-40kPa.
Extrusion -3D printing equipment extrusion processing temperature is 60 DEG C~120 DEG C, and revolving speed is 10r/min~40r/min.
Extrusion -3D printing equipment port mould diameter is 3mm or 1.75mm.
The beneficial effects of the present invention are:
This method is carried out using the graphene oxide (GO) with high thermal conductivity with multi-walled carbon nanotube (MWCNT) in the solution
Dispersion mixing obtains MWCNT/GO aqueous solution, then obtains MWCNT/GO aeroge by freeze-drying, passes through sonic oscillation later
MWCNT/GO aeroge and organic phase-change component are subjected to dispersion mixing with vacuum suction, obtain MWCNT/GO/ organic phase-change group
Divide premix, premix phase transformation enthalpy with higher, high thermal conductivity, preferable cyclic durability and shape stability.It is logical
Regulation extrusion -3D printing technological parameter is crossed, MWCNT/GO/ organic phase-change component premix is sufficiently mixed again and is formed is each
The carbon aerogels composite shape-stabilized phase change energy storage material of kind shape.The technique realizes opening for low-viscosity organic phase change energy storage material
Hair, will be pushed further into the application field of 3D printing equipment and technology, and expand setting phase change energy storage material and more widely answer
With.
Detailed description of the invention
Fig. 1 is a kind of preparation technology flow chart of carbon aerogels composite shape-stabilized phase change energy storage material of the present invention；
Fig. 2 is scanning electron microscope (SEM) figure of MWCNT/GO aeroge in the present embodiment；
Fig. 3 is the SEM figure of MWCNT/GO/ organic phase-change component premix in the present embodiment；
Fig. 4 is the endothermic curve figure of MWCNT/GO aeroge composite phase-change energy storage material in this implementation；
Fig. 5 is the exotherm figure of MWCNT/GO aeroge composite phase-change energy storage material in this implementation；
Fig. 6 is the thermal stability figure of MWCNT/GO aeroge composite phase-change energy storage material in this implementation.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of carbon aerogels composite shape-stabilized phase change energy storage material of the present invention, including middle low temperature organic phase-change component and high thermal conductivity
And the MWCNT/GO aeroge of high porosity, wherein middle low temperature organic phase-change component accounts for mass fraction 80-95%, MWCNT/GO
Aeroge accounts for mass fraction 5-20%, and the sum of mass percent of the above components content is 100%；
Middle low temperature organic phase-change group is divided into octadecanoid acid, lauric acid, myristic acid, polyethylene glycol, any in glycerine
It is a kind of；
MWCNT/GO aeroge, including MWCNT (multi-walled carbon nanotube) and GO (graphene oxide), wherein MWCNT accounts for matter
Score 10-40% is measured, GO accounts for mass fraction 60-90%, and the sum of mass percent of the above components content is 100%.
A kind of preparation method of carbon aerogels composite shape-stabilized phase change energy storage material of the present invention, it is specifically real according to the following steps
It applies:
Step 1, the MWCNT/GO aeroge of high thermal conductivity and high porosity is prepared, the specific steps are as follows:
Step 1.1, MWCNT is added in 50 DEG C~80 DEG C of GO aqueous solution, then instills acetone/ethanol solution, kept
Temperature is constant, stirs 4h~12h, obtains MWCNT/GO aqueous solution；
Wherein, the mass ratio of MWCNT and GO is 1~4:6~9；
The concentration of GO aqueous solution is 1mg/mL~8mg/mL；
The volume of acetone/ethanol solution is the 1%-5% of MWCNT and GO aqueous solution total volume；
The volume ratio of acetone and ethyl alcohol is 1:3~6 in acetone/ethanol solution；
Step 1.2, by the MWCNT/GO aqueous solution obtained after step 1.1 stand filter, later be freeze-dried 48h~
96h obtains MWCNT/GO aeroge, finally, MWCNT/GO aeroge dislocation is done in 50 DEG C~80 DEG C of vacuum oven
The MWCNT/GO aeroge of high thermal conductivity and high porosity can be obtained in dry 4h~8h；
Step 2, the component premix of MWCNT/GO/ organic phase-change is prepared using dynamic perfusion technique；
Specifically: the MWCNT/GO aeroge of high thermal conductivity and high porosity is added together with middle low temperature organic phase-change component
10 DEG C~90 DEG C are warming up into constant temperature electric heating set, then by constant temperature electric heating set, makes the MWCNT/GO aeroge in constant temperature electric heating set
It is melted completely with organic phase-change component, forms molten system；Temperature is kept constant later, it is dynamic using ultrasonator and vacuum pump
State perfusion mixing 10min~45min, cooling obtain MWCNT/GO/ organic phase-change component blend composition；Finally the blend composition is ground
MWCNT/GO/ organic phase-change component premix can be obtained in honed sieve；
Wherein, the mass ratio of middle low temperature organic phase-change component and MWCNT/GO aeroge is 8~9.5:0.5~2；
Middle low temperature organic phase-change group is divided into octadecanoid acid, lauric acid, myristic acid, polyethylene glycol, any in glycerine
It is a kind of；
The ultrasonic power of ultrasonator is 400w~1200w, and the relative degree of vacuum of vacuum pump is -10kPa~-40kPa；
Use aperture for 50 μm~100 μm of sieve when sieving；
Step 3, MWCNT/GO/ organic phase-change component premix is put into extrusion molding in extrusion -3D printing equipment
Obtain carbon aerogels composite shape-stabilized phase change energy storage material；
Wherein, extrusion -3D printing equipment extrusion processing temperature is 60 DEG C~120 DEG C, and revolving speed is 10r/min~40r/
min；
Extrusion -3D printing equipment port mould diameter is 3mm or 1.75mm.
Embodiment 1
A kind of preparation method of carbon aerogels composite shape-stabilized phase change energy storage material of the present invention, as shown in Figure 1, specifically according to
Lower step is implemented:
Step 1, the MWCNT/GO aeroge of high thermal conductivity and high porosity is prepared, the specific steps are as follows:
Step 1.1, MWCNT is added in 50 DEG C of GO aqueous solution, then instills acetone/ethanol solution, keep temperature permanent
It is fixed, 4h~12h is stirred, MWCNT/GO aqueous solution is obtained；
Wherein, the mass ratio of MWCNT and GO is 1:9；
The concentration of GO aqueous solution is 1mg/mL；
The volume of acetone/ethanol solution is the 1% of MWCNT and GO aqueous solution total volume；
The volume ratio of acetone and ethyl alcohol is 1:3 in acetone/ethanol solution；
Step 1.2, the MWCNT/GO aqueous solution obtained after step 1.1 is stood and is filtered, be freeze-dried 48h later, obtain
To MWCNT/GO aeroge, finally, MWCNT/GO aeroge dislocation is dried 4h in 50 DEG C of vacuum oven, can be obtained
The MWCNT/GO aeroge of high thermal conductivity and high porosity, as shown in Fig. 2, the scanning electron microscope of MWCNT/GO aeroge
(SEM) figure；
Step 2, the component premix of MWCNT/GO/ organic phase-change is prepared using dynamic perfusion technique；
Specifically: the MWCNT/GO aeroge of high thermal conductivity and high porosity is added to constant temperature electric heating set together with lauric acid
In, then constant temperature electric heating set is warming up to 60 DEG C, make constant temperature electric heating cover in MWCNT/GO aeroge melted completely with lauric acid, shape
At molten system；Temperature is kept constant later, and using ultrasonator and vacuum pump dynamic perfusion mixing 10min, cooling is obtained
MWCNT/GO/ organic phase-change component blend composition；Finally the blend composition is ground up, sieved, MWCNT/GO/ organic phase-change can be obtained
Component premix, Fig. 3 are that the SEM of MWCNT/GO/ organic phase-change component premix schemes；
Wherein, the mass ratio of lauric acid and MWCNT/GO aeroge is 8:2；
The ultrasonic power of ultrasonator is 400w, and the relative degree of vacuum of vacuum pump is -10kPa；
Use aperture for 50 μm of sieve when sieving；
Step 3, MWCNT/GO/ organic phase-change component premix is put into extrusion molding in extrusion -3D printing equipment
Obtain carbon aerogels composite shape-stabilized phase change energy storage material；
Wherein, extrusion -3D printing equipment extrusion processing temperature is 60 DEG C, revolving speed 10r/min；
Extrusion -3D printing equipment port mould diameter is 3mm.
Finally, a series of carbon aerogels composite shape-stabilized phase change energy storage material has been carried out heat release-heat absorption capacity and heat is steady
Qualitative test, as shown in Fig. 4, Fig. 5 and Fig. 6；It was found that the melting temperature of MWCNT/GO aeroge composite shape-stabilized phase change energy storage material
Positioned at 50 DEG C or so, continue 15 minutes at 100 DEG C, while the addition of MWCNT/GO aeroge has not been changed organic phase change energy storage material
Thermal stability.
Embodiment 2
A kind of preparation method of carbon aerogels composite shape-stabilized phase change energy storage material of the present invention, it is specifically real according to the following steps
It applies:
Step 1, the MWCNT/GO aeroge of high thermal conductivity and high porosity is prepared, the specific steps are as follows:
Step 1.1, MWCNT is added in 55 DEG C of GO aqueous solution, then instills acetone/ethanol solution, keep temperature permanent
It is fixed, 6h is stirred, MWCNT/GO aqueous solution is obtained；
Wherein, the mass ratio of MWCNT and GO is 1.5:8.5；
The concentration of GO aqueous solution is 2mg/mL；
The volume of acetone/ethanol solution is the 2% of MWCNT and GO aqueous solution total volume；
The volume ratio of acetone and ethyl alcohol is 1:3 in acetone/ethanol solution；
Step 1.2, the MWCNT/GO aqueous solution obtained after step 1.1 is stood and is filtered, be freeze-dried 60h later, obtain
To MWCNT/GO aeroge, finally, MWCNT/GO aeroge dislocation is dried 6h in 50 DEG C of vacuum oven, can be obtained
The MWCNT/GO aeroge of high thermal conductivity and high porosity；
Step 2, the component premix of MWCNT/GO/ organic phase-change is prepared using dynamic perfusion technique；
Specifically: the MWCNT/GO aeroge of high thermal conductivity and high porosity is added together with middle low temperature organic phase-change component
Into constant temperature electric heating set, then constant temperature electric heating set is warming up to 70 DEG C, make constant temperature electric heating cover in MWCNT/GO aeroge with it is organic
Phase transformation component melts completely, forms molten system；Temperature is kept constant later, is perfused using ultrasonator and vacuum pump dynamic
15min is mixed, it is cooling, obtain MWCNT/GO/ organic phase-change component blend composition；Finally the blend composition is ground up, sieved, can be obtained
To MWCNT/GO/ organic phase-change component premix；
Wherein, the mass ratio of middle low temperature organic phase-change component and MWCNT/GO aeroge is 8.5:1.5；
Middle low temperature organic phase-change group is divided into octadecanoid acid；
The ultrasonic power of ultrasonator is 600w, and the relative degree of vacuum of vacuum pump is -20kPa；
Use aperture for 60 μm of sieve when sieving；
Step 3, MWCNT/GO/ organic phase-change component premix is put into extrusion molding in extrusion -3D printing equipment
Obtain carbon aerogels composite shape-stabilized phase change energy storage material；
Wherein, extrusion -3D printing equipment extrusion processing temperature is 70 DEG C, revolving speed 15r/min；
Extrusion -3D printing equipment port mould diameter is 3mm.
Embodiment 3
A kind of preparation method of carbon aerogels composite shape-stabilized phase change energy storage material of the present invention, it is specifically real according to the following steps
It applies:
Step 1, the MWCNT/GO aeroge of high thermal conductivity and high porosity is prepared, the specific steps are as follows:
Step 1.1, MWCNT is added in 65 DEG C of GO aqueous solution, then instills acetone/ethanol solution, keep temperature permanent
It is fixed, 8h is stirred, MWCNT/GO aqueous solution is obtained；
Wherein, the mass ratio of MWCNT and GO is 2:8；
The concentration of GO aqueous solution is 4mg/mL；
The volume of acetone/ethanol solution is the 3% of MWCNT and GO aqueous solution total volume；
The volume ratio of acetone and ethyl alcohol is 1:4 in acetone/ethanol solution；
Step 1.2, the MWCNT/GO aqueous solution obtained after step 1.1 is stood and is filtered, be freeze-dried 72h later, obtain
To MWCNT/GO aeroge, finally, MWCNT/GO aeroge dislocation is dried 6h in 60 DEG C of vacuum oven, can be obtained
The MWCNT/GO aeroge of high thermal conductivity and high porosity；
Step 2, the component premix of MWCNT/GO/ organic phase-change is prepared using dynamic perfusion technique；
Specifically: the MWCNT/GO aeroge of high thermal conductivity and high porosity is added together with middle low temperature organic phase-change component
Into constant temperature electric heating set, then constant temperature electric heating set is warming up to 80 DEG C, make constant temperature electric heating cover in MWCNT/GO aeroge with it is organic
Phase transformation component melts completely, forms molten system；Temperature is kept constant later, is perfused using ultrasonator and vacuum pump dynamic
20min is mixed, it is cooling, obtain MWCNT/GO/ organic phase-change component blend composition；Finally the blend composition is ground up, sieved, can be obtained
To MWCNT/GO/ organic phase-change component premix；
Wherein, the mass ratio of middle low temperature organic phase-change component and MWCNT/GO aeroge is 8.8:1.2；
Middle low temperature organic phase-change group is divided into myristic acid；
The ultrasonic power of ultrasonator is 800w, and the relative degree of vacuum of vacuum pump is -20kPa；
Use aperture for 70 μm of sieve when sieving；
Step 3, MWCNT/GO/ organic phase-change component premix is put into extrusion molding in extrusion -3D printing equipment
Obtain carbon aerogels composite shape-stabilized phase change energy storage material；
Wherein, extrusion -3D printing equipment extrusion processing temperature is 80 DEG C, revolving speed 15r/min；
Extrusion -3D printing equipment port mould diameter is 3mm.
Embodiment 4
A kind of preparation method of carbon aerogels composite shape-stabilized phase change energy storage material of the present invention, it is specifically real according to the following steps
It applies:
Step 1, the MWCNT/GO aeroge of high thermal conductivity and high porosity is prepared, the specific steps are as follows:
Step 1.1, MWCNT is added in 70 DEG C of GO aqueous solution, then instills acetone/ethanol solution, keep temperature permanent
It is fixed, 10h is stirred, MWCNT/GO aqueous solution is obtained；
Wherein, the mass ratio of MWCNT and GO is 3:7；
The concentration of GO aqueous solution is 6mg/mL；
The volume of acetone/ethanol solution is the 4% of MWCNT and GO aqueous solution total volume；
The volume ratio of acetone and ethyl alcohol is 1:5 in acetone/ethanol solution；
Step 1.2, the MWCNT/GO aqueous solution obtained after step 1.1 is stood and is filtered, be freeze-dried 72h later, obtain
To MWCNT/GO aeroge, finally, MWCNT/GO aeroge dislocation is dried 6h in 70 DEG C of vacuum oven, can be obtained
The MWCNT/GO aeroge of high thermal conductivity and high porosity；
Step 2, the component premix of MWCNT/GO/ organic phase-change is prepared using dynamic perfusion technique；
Specifically: the MWCNT/GO aeroge of high thermal conductivity and high porosity is added together with middle low temperature organic phase-change component
Into constant temperature electric heating set, then constant temperature electric heating set is warming up to 90 DEG C, make constant temperature electric heating cover in MWCNT/GO aeroge with it is organic
Phase transformation component melts completely, forms molten system；Temperature is kept constant later, is perfused using ultrasonator and vacuum pump dynamic
25min is mixed, it is cooling, obtain MWCNT/GO/ organic phase-change component blend composition；Finally the blend composition is ground up, sieved, can be obtained
To MWCNT/GO/ organic phase-change component premix；
Wherein, the mass ratio of middle low temperature organic phase-change component and MWCNT/GO aeroge is 9:1；
Middle low temperature organic phase-change group is divided into polyethylene glycol；
The ultrasonic power of ultrasonator is 800w, and the relative degree of vacuum of vacuum pump is -30kPa；
Use aperture for 80 μm of sieve when sieving；
Step 3, MWCNT/GO/ organic phase-change component premix is put into extrusion molding in extrusion -3D printing equipment
Obtain carbon aerogels composite shape-stabilized phase change energy storage material；
Wherein, extrusion -3D printing equipment extrusion processing temperature is 90 DEG C, revolving speed 20r/min；
Extrusion -3D printing equipment port mould diameter is 1.75mm.
Embodiment 5
A kind of preparation method of carbon aerogels composite shape-stabilized phase change energy storage material of the present invention, it is specifically real according to the following steps
It applies:
Step 1, the MWCNT/GO aeroge of high thermal conductivity and high porosity is prepared, the specific steps are as follows:
Step 1.1, MWCNT is added in 80 DEG C of GO aqueous solution, then instills acetone/ethanol solution, keep temperature permanent
It is fixed, 12h is stirred, MWCNT/GO aqueous solution is obtained；
Wherein, the mass ratio of MWCNT and GO is 4:6；
The concentration of GO aqueous solution is 8mg/mL；
The volume of acetone/ethanol solution is the 5% of MWCNT and GO aqueous solution total volume；
The volume ratio of acetone and ethyl alcohol is 1:6 in acetone/ethanol solution；
Step 1.2, the MWCNT/GO aqueous solution obtained after step 1.1 is stood and is filtered, be freeze-dried 96h later, obtain
To MWCNT/GO aeroge, finally, MWCNT/GO aeroge dislocation is dried 8h in 80 DEG C of vacuum oven, can be obtained
The MWCNT/GO aeroge of high thermal conductivity and high porosity；
Step 2, the component premix of MWCNT/GO/ organic phase-change is prepared using dynamic perfusion technique；
Specifically: the MWCNT/GO aeroge of high thermal conductivity and high porosity is added together with middle low temperature organic phase-change component
Into constant temperature electric heating set, then constant temperature electric heating set is warming up to 90 DEG C, make constant temperature electric heating cover in MWCNT/GO aeroge with it is organic
Phase transformation component melts completely, forms molten system；Temperature is kept constant later, is perfused using ultrasonator and vacuum pump dynamic
45min is mixed, it is cooling, obtain MWCNT/GO/ organic phase-change component blend composition；Finally the blend composition is ground up, sieved, can be obtained
To MWCNT/GO/ organic phase-change component premix；
Wherein, the mass ratio of middle low temperature organic phase-change component and MWCNT/GO aeroge is 9.5:0.5；
Middle low temperature organic phase-change group is divided into glycerine；
The ultrasonic power of ultrasonator is 1200w, and the relative degree of vacuum of vacuum pump is -40kPa；
Use aperture for 100 μm of sieve when sieving；
Step 3, MWCNT/GO/ organic phase-change component premix is put into extrusion molding in extrusion -3D printing equipment
Obtain carbon aerogels composite shape-stabilized phase change energy storage material；
Wherein, extrusion -3D printing equipment extrusion processing temperature is 100 DEG C, revolving speed 30r/min；
Extrusion -3D printing equipment port mould diameter is 1.75mm.
Claims (9)
1. a kind of carbon aerogels composite shape-stabilized phase change energy storage material, which is characterized in that including middle low temperature organic phase-change component and height
Thermally conductive and high porosity MWCNT/GO aeroge, wherein middle low temperature organic phase-change component accounts for mass fraction 80-95%,
MWCNT/GO aeroge accounts for mass fraction 5-20%, and the sum of mass percent of the above components content is 100%.
2. a kind of carbon aerogels composite shape-stabilized phase change energy storage material according to claim 1, which is characterized in that described
MWCNT/GO aeroge, including MWCNT and GO, wherein MWCNT accounts for mass fraction 10-40%, and GO accounts for mass fraction 60-90%,
The sum of mass percent of the above components content is 100%.
3. a kind of carbon aerogels composite shape-stabilized phase change energy storage material according to claim 1, which is characterized in that low in described
Warm organic phase-change group is divided into octadecanoid acid, lauric acid, myristic acid, polyethylene glycol, any one in glycerine.
4. a kind of preparation method of carbon aerogels composite shape-stabilized phase change energy storage material, which is characterized in that specifically according to the following steps
Implement:
Step 1, the MWCNT/GO aeroge of high thermal conductivity and high porosity is prepared；
Step 2, the component premix of MWCNT/GO/ organic phase-change is prepared using dynamic perfusion technique；
Step 3, MWCNT/GO/ organic phase-change component premix is put into extrusion molding in extrusion -3D printing equipment, can be obtained
Carbon aerogels composite shape-stabilized phase change energy storage material.
5. a kind of preparation method of carbon aerogels composite shape-stabilized phase change energy storage material according to claim 4, feature exist
In the step 1, the specific steps are as follows:
Step 1.1, MWCNT is added in 50 DEG C~80 DEG C of GO aqueous solution, then instills acetone/ethanol solution, keep temperature
It is constant, 4h~12h is stirred, MWCNT/GO aqueous solution is obtained；
Wherein, the mass ratio of MWCNT and GO is 1~4:6~9；
The concentration of GO aqueous solution is 1mg/mL~8mg/mL；
The volume of acetone/ethanol solution is the 1%-5% of MWCNT and GO aqueous solution total volume；
The volume ratio of acetone and ethyl alcohol is 1:3~6 in acetone/ethanol solution；
Step 1.2, the MWCNT/GO aqueous solution obtained after step 1.1 is stood and is filtered, be freeze-dried 48h~96h later, obtain
To MWCNT/GO aeroge, finally, MWCNT/GO aeroge is placed in in 50 DEG C~80 DEG C of vacuum oven dry 4h~8h,
The MWCNT/GO aeroge of high thermal conductivity and high porosity can be obtained.
6. a kind of preparation method of carbon aerogels composite shape-stabilized phase change energy storage material according to claim 4, feature exist
In the step 2 specifically: by the MWCNT/GO aeroge of high thermal conductivity and high porosity together with middle low temperature organic phase-change component
It is added in constant temperature electric heating set, then constant temperature electric heating set is warming up to 10 DEG C~90 DEG C, makes the MWCNT/GO gas in constant temperature electric heating set
Gel melts completely with organic phase-change component, forms molten system；Temperature is kept constant later, utilizes ultrasonator and vacuum
Pump dynamic perfusion mixing 10min~45min, cooling obtain MWCNT/GO/ organic phase-change component blend composition；Finally by the blending
Abrasive lapping sieving, can be obtained MWCNT/GO/ organic phase-change component premix；
Wherein, the mass ratio of middle low temperature organic phase-change component and MWCNT/GO aeroge is 8~9.5:0.5~2；
Middle low temperature organic phase-change group is divided into octadecanoid acid, lauric acid, myristic acid, polyethylene glycol, any one in glycerine.
7. a kind of preparation method of carbon aerogels composite shape-stabilized phase change energy storage material according to claim 6, feature exist
In the ultrasonic power of the ultrasonator is 400w~1200w, and the relative degree of vacuum of vacuum pump is -10kPa~-40kPa.
8. a kind of preparation method of carbon aerogels composite shape-stabilized phase change energy storage material according to claim 4, feature exist
In the extrusion -3D printing equipment extrusion processing temperature is 60 DEG C~120 DEG C, and revolving speed is 10r/min~40r/min.
9. a kind of preparation method of carbon aerogels composite shape-stabilized phase change energy storage material according to claim 4, feature exist
In the extrusion -3D printing equipment port mould diameter is 3mm or 1.75mm.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110408318A (en) * | 2019-06-27 | 2019-11-05 | 航天材料及工艺研究所 | A kind of phase transformation thermal control coating and preparation method thereof |
| CN110499145A (en) * | 2019-08-26 | 2019-11-26 | 张立强 | Aeroge adsorbs phase-change accumulation energy powder, preparation method and applications |
| CN110746939A (en) * | 2019-11-07 | 2020-02-04 | 四川大学 | Composite phase change material with PVA as framework material and preparation method thereof |
| CN111394066A (en) * | 2020-04-21 | 2020-07-10 | 南京金合能源材料有限公司 | Medium-low temperature composite phase change temperature control material and preparation method thereof |
| CN113667460A (en) * | 2021-09-24 | 2021-11-19 | 北京火狐星云数字科技有限公司 | Inorganic phase-change material and preparation method thereof |
| CN114106779A (en) * | 2020-08-27 | 2022-03-01 | 中国科学院大连化学物理研究所 | Composite sizing phase-change material based on carbon nanotube aerogel and preparation and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106189088A (en) * | 2016-07-19 | 2016-12-07 | 沈阳航空航天大学 | A kind of preparation method of CNT graphene oxide hybrid buildup composite |
| CN107617396A (en) * | 2017-10-25 | 2018-01-23 | 中国科学院苏州纳米技术与纳米仿生研究所 | Phase change microsphere, its preparation method and application |
| CN107674652A (en) * | 2017-08-31 | 2018-02-09 | 北京化工大学 | A kind of arbitrary shape three-dimensional grapheme thermal-conductivity phase-change composite and preparation method thereof |
-
2018
- 2018-08-13 CN CN201810913253.6A patent/CN109021930A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106189088A (en) * | 2016-07-19 | 2016-12-07 | 沈阳航空航天大学 | A kind of preparation method of CNT graphene oxide hybrid buildup composite |
| CN107674652A (en) * | 2017-08-31 | 2018-02-09 | 北京化工大学 | A kind of arbitrary shape three-dimensional grapheme thermal-conductivity phase-change composite and preparation method thereof |
| CN107617396A (en) * | 2017-10-25 | 2018-01-23 | 中国科学院苏州纳米技术与纳米仿生研究所 | Phase change microsphere, its preparation method and application |
Non-Patent Citations (5)
| Title |
|---|
| 付长璟: "《石墨烯的制备、结构及应用》", 30 June 2017, 哈尔滨工业大学出版社 * |
| 孙海燕: "石墨烯基多功能超轻弹性气凝胶", 《中国博士学位论文全文数据库 工程科技I辑》 * |
| 张明龙: "《美国材料领域的创新信息》", 31 May 2016, 企业管理出版社 * |
| 李汉章: "《建筑节能理论与实践》", 31 May 2006, 湖北科学技术出版社 * |
| 田本强: "导热复合定形相变材料的制备及性能研究", 《中国优秀硕士学位论文全文数据库 工程科技I期》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110408318A (en) * | 2019-06-27 | 2019-11-05 | 航天材料及工艺研究所 | A kind of phase transformation thermal control coating and preparation method thereof |
| CN110499145A (en) * | 2019-08-26 | 2019-11-26 | 张立强 | Aeroge adsorbs phase-change accumulation energy powder, preparation method and applications |
| WO2021035819A1 (en) * | 2019-08-26 | 2021-03-04 | 张立强 | Aerogel adsorption phase change energy storage powder, preparation method therefor, and application thereof |
| CN110746939A (en) * | 2019-11-07 | 2020-02-04 | 四川大学 | Composite phase change material with PVA as framework material and preparation method thereof |
| CN111394066A (en) * | 2020-04-21 | 2020-07-10 | 南京金合能源材料有限公司 | Medium-low temperature composite phase change temperature control material and preparation method thereof |
| CN114106779A (en) * | 2020-08-27 | 2022-03-01 | 中国科学院大连化学物理研究所 | Composite sizing phase-change material based on carbon nanotube aerogel and preparation and application thereof |
| CN113667460A (en) * | 2021-09-24 | 2021-11-19 | 北京火狐星云数字科技有限公司 | Inorganic phase-change material and preparation method thereof |
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Application publication date: 20181218 |