CN105524595A - Composite phase change material with high thermal conductivity and preparation method thereof - Google Patents
Composite phase change material with high thermal conductivity and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of composite materials and discloses a composite phase change material with high thermal conductivity and a preparation method thereof. The composite phase change material comprises a surface modified carbon-based nanometer thermal conductive filler and aliphatic acid. The surface modified carbon-based nanometer thermal conductive filler is one of surface modified nano-graphite flake, graphene or carbon nanotube. The aliphatic acid is one component selected from decylic acid, decanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid and arachidic acid or a mixture of two components selected from decylic acid, decanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid and arachidic acid. The preparation method comprises the following steps: carrying out surface modification on a carbon-based nanometer thermal conductive filler by the use of melamine, sodium humate or dopamine and adding the surface modified carbon-based nanometer thermal conductive filler into a aliphatic acid melt; and uniformly mixing for melt blending and introducing the melt blending product into a mold, and carrying out curing molding so as to obtain the composite phase change material with high thermal conductivity. The composite phase change material with high thermal conductivity has excellent thermal conductivity and stable performance, and has a good application prospect.
Description
Technical field
The invention belongs to technical field of composite materials, be specifically related to a kind of high-heat-conducting composite phase-transition material and preparation method thereof.
Background technology
Along with modern society is to the approach exhaustion of increase and the fossil oil day by day of energy demand, thermal energy storage technology, as a kind of new technology improving energy utilization rate, obtains unprecedented developing rapidly.Conventional phase-changing energy storage material mainly contains paraffin class, organic fatty acids and inorganic hydrated salt class.Wherein, organic aliphatic acid because of its high melting enthalpy, without cross cold and separate out that cubical expansivity in phenomenon, nontoxic corrosion-free, solid-liquid phase change process is little, stable performance, the advantage such as cheap and enjoying great popularity.But the too low heat conductivility of lipid acid phase change material makes again the heat transfer property of heat reservoir poor, and heat utilization efficiency is low, limit its applying industrially.Therefore, the heat conductivility how improving lipid acid phase change material is the study hotspot of numerous scholar.
Adding high heat conductive filler is the effective way improving lipid acid phase change material heat conductivility.Wherein, carbon-based nano filler because its density is little, excellent thermal conductivity and receiving much concern.Bibliographical information has been had to prepare the good composite phase-change material of heat conductivility (Renew.Ener.2015,75,243-248 by interpolation nano graphite flakes, carbon nanotube; Energy2013,58,628-634; Carbon, 2010,48,3979-3986; Chem.Eng.Sci.2012,81,140 – 145; Energy2013,55,752-761; Int.J.EnergyRes.2015,39,696 – 708.).But prior art exists following subject matter: (1) carbon-based nano fillers dispersed difference causes heat conductivility strengthening effect limited, the heat conductivility of composite phase-change material needs to be improved further; (2) due to the poor compatibility of carbon back heat conductive filler and lipid acid, easily reunite in Thermal Cycling, cause composite phase-change material in use heat conductivility exhaustion, limit it and use.
Therefore, need a kind of high-heat-conducting composite phase-transition material of stable in properties badly, effectively solve the heat conductivility exhaustion in the low and Thermal Cycling of phase change material heat conductivility, accelerate phase change material applying in energy storage field, improve efficiency of energy utilization further.
Summary of the invention
In order to solve the shortcoming and defect part of above prior art, primary and foremost purpose of the present invention is to provide a kind of high-heat-conducting composite phase-transition material.
Another object of the present invention is to the preparation method that above-mentioned high-heat-conducting composite phase-transition material is provided.
The object of the invention is achieved through the following technical solutions:
A kind of high-heat-conducting composite phase-transition material, comprises carbon-based nano heat conductive filler and the lipid acid of surface modification; The carbon-based nano heat conductive filler of described surface modification is the one in the nano graphite flakes of surface modification, Graphene or carbon nanotube; Described lipid acid is one or more the mixing in capric acid, capric acid, lauric acid, tetradecanoic acid, palmitinic acid, stearic acid and eicosanoic acid.
Preferably, the mass percentage of the carbon-based nano heat conductive filler of described surface modification in composite phase-change material is 1% ~ 10%.
The preparation method of above-mentioned high-heat-conducting composite phase-transition material, comprises following preparation process:
(1) carbon-based nano heat conductive filler is dispersed in surface modifier solution, is uniformly mixed rear supersound process, then after filtration, washing, obtain the carbon-based nano heat conductive filler of surface modification after drying; Described surface-modifying agent is the one in trimeric cyanamide, sodium humate or Dopamine HCL;
(2) lipid acid is heated to fusing, again the carbon-based nano heat conductive filler of surface modification is joined in lipid acid liquation, continue heating supersound process, obtain homodisperse lipid acid mixed solution, finally mixed solution is imported curing molding in mould, namely obtain high-heat-conducting composite phase-transition material.
Preferably, the rotating speed stirred described in step (1) is 800 ~ 2000rpm, and the time is 1 ~ 5 hour; The time of described supersound process is 20 ~ 90 minutes.
Preferably, the solvent that described surface modifier solution uses is N, N-dimethyl sulfoxide (DMSO), water or DMF.
Preferably, in described surface modifier solution, the mass concentration of surface-modifying agent is 1% ~ 5%; The described carbon-based nano heat conductive filler concentration be dispersed in surface modifier solution is 2 ~ 10mg/mL.
Preferably, described in step (2), the time of supersound process is 20 ~ 90 minutes.
Preferably, described in step (1) and step (2), ultrasonic frequency is 25KHZ, and power is 100 ~ 500W.
Principle of the present invention is: heat conductive filler of the present invention is through the nano graphite flakes of surface modification, Graphene or carbon nanotube.Wherein, surface-modifying agent is interacted by π-π and is combined with carbon-based nano filler, and in surface-modifying agent, amino or carboxyl play the effect of modifying carbon back Nano filling surface chemical property.Based on carbon-based nano filling surface band amido or the carboxyl of π-π interaction modification, not only maintain the original high thermal conductivity of carbon-based nano filler, and the amido of filling surface or carboxyl can the carboxyl of mode in lipid acid of hydrogen bond be combined, make filler dispersed in lipid acid on the one hand, enhance the interface cohesion of filler and lipid acid on the other hand.Therefore, these two kinds of effects can make the heat conductivility of lipid acid be significantly improved.In addition, the carbon-based nano filler of surface modification can stably be dispersed in lipid acid based on hydrogen bond action, not easily reunites in actual Thermal Cycling, thus avoids composite phase-change material in use heat conductivility exhaustion.
Preparation method of the present invention and the product tool obtained have the following advantages and beneficial effect:
(1) high-heat-conducting composite phase-transition material provided by the invention has the advantage of excellent thermal conductivity.Carbon-based nano filler based on the modification of π-π interactive surfaces not only maintains the original high thermal conductivity of carbon-based nano filler, and the amido of filling surface or carboxyl can the carboxyl of mode in lipid acid of hydrogen bond be combined, make filler dispersed in lipid acid on the one hand, enhance the interface binding power of filler and lipid acid on the other hand.Therefore composite phase-change material can be made excellent heat conductivility is had when low loading level.
(2) heat conductivility of high thermal-conductivity phase-change composite provided by the invention is stablized.The carbon-based nano filling surface band amino of surface modification or carboxyl, can be combined by the carboxyl of hydrogen bond action in lipid acid, make carbon-based nano filler stable dispersion in lipid acid, the agglomeration of effective prevention in actual Thermal Cycling, avoid composite phase-change material in use heat conductivility exhaustion, keep good heat conductivility.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Following examples adopt the heat conductivility of Hotdisk thermal conductivity coefficient measurement instrument to each obtained high-heat-conducting composite phase-transition material and comparative example heat conduction phase change material to test.K
mfor the thermal conductivity of composite phase-change material, K
0for the thermal conductivity of the unmodified heat conductive filler-fatty acid combined phase change material of comparative example.B be the thermal conductivity of composite phase-change material after 5 heating-refrigeration cycle with thermal cycling before the ratio of thermal conductivity.
Embodiment 1
(1) 1g nano graphite flakes is under agitation joined the trimeric cyanamide N that 200mL mass concentration is 3%, in N-dimethyl sulphoxide solution, after 1000rpm stirs 4 hours, and then ultrasonic disperse 30 minutes (ultrasonic frequency 25KHZ, power 300W), after filtration, namely obtain surface-modified nano graphite flake after drying.
(2) take 10g stearic acid and be heated to fusing, again surface-modified nano graphite flake is joined in stearic acid liquation, continue heating ultrasonic 50 minutes (ultrasonic frequency 25KHZ, power 300W) make nano graphite flakes be dispersed in stearic acid liquation, finally mixed solution is poured in Standard Module into naturally cool to self-vulcanizing shaping, namely obtain high-heat-conducting composite phase-transition material.Wherein surface-modified nano graphite flake in the composite mass content be 5%.
In addition, as a comparison case, same procedure is adopted to prepare composite phase-change material with unmodified nano graphite flakes for heat conductive filler carries out modification to stearic acid.Heat conductivility test result shows, the heat conductivility (0.396W/mK) of the high-heat-conducting composite phase-transition material prepared by the present embodiment is apparently higher than comparative example (0.260W/mK), improve 50%, and its heat conductivility remains unchanged substantially after 5 thermal cyclings.
Embodiment 2
(1) 1.6g nano graphite flakes under agitation being joined 400mL mass concentration is in the sodium humate aqueous solution of 2%, after 1200rpm stirs 3 hours, and then ultrasonic disperse 30 minutes (ultrasonic frequency 25KHZ, power 200W), after filtration, namely obtain surface-modified nano graphite flake after drying.
(2) take 10g tetradecanoic acid and be heated to fusing, again surface-modified nano graphite flake is joined in tetradecanoic acid liquation, continue heating ultrasonic 70 minutes (ultrasonic frequency 25KHZ, power 500W) make in the dispersed tetradecanoic acid liquation of graphite flake, finally mixed solution is poured in Standard Module and naturally cool to that namely self-vulcanizing is shaping obtains high-heat-conducting composite phase-transition material.Wherein surface-modified nano graphite flake in the composite mass content be 8%.
In addition, as a comparison case, same procedure is adopted to prepare composite phase-change material with unmodified nano graphite flakes for heat conductive filler carries out modification to tetradecanoic acid.Heat conductivility test result shows, the heat conductivility of the high-heat-conducting composite phase-transition material prepared by the present embodiment is 1.6 times of comparative example, and its heat conductivility remains unchanged substantially after 5 thermal cyclings.
Embodiment 3
(1) 0.5g Graphene under agitation being joined 50mL mass concentration is in the aqueous dopamine solution liquid of 3%, after 2000rpm stirs 5 hours, and then ultrasonic disperse 40 minutes (ultrasonic frequency 25KHZ, power 500W), after filtration, namely obtain surface modified graphite alkene after drying.
(2) take 10g lauric acid and be heated to fusing, again surface modified graphite alkene is joined in lauric acid liquation, continue heating ultrasonic 20 minutes (ultrasonic frequency 25KHZ, power 100W) make graphene uniform be dispersed in lauric acid liquation, finally mixed solution is poured in Standard Module and naturally cool to that namely self-vulcanizing is shaping obtains high-heat-conducting composite phase-transition material.Wherein surface modified graphite alkene mass content in composite phase-change material is 2%.
In addition, as a comparison case, same procedure is adopted to prepare composite phase-change material with unmodified Graphene for heat conductive filler carries out modification to lauric acid.Heat conductivility test result shows, the heat conductivility of the high-heat-conducting composite phase-transition material prepared by the present embodiment apparently higher than comparative example, and, after 5 thermal cyclings, still keep good heat conductivility.
Embodiment 4
(1) 1.2g Graphene is under agitation joined the trimeric cyanamide N that 150mL mass concentration is 4%, in N-dimethyl sulphoxide solution, after 1500rpm stirs 5 hours, and then ultrasonic disperse 50 minutes (ultrasonic frequency 25KHZ, power 300W), after filtration, namely obtain surface-modified nano Graphene after drying.
(2) take 10g capric acid and be heated to fusing, again surface modified graphite alkene is joined in capric acid liquation, continue heating ultrasonic 40 minutes (ultrasonic frequency 25KHZ, power 200W) make graphene uniform be dispersed in capric acid liquation, finally mixed solution is poured in Standard Module and naturally cool to that namely self-vulcanizing is shaping obtains high-heat-conducting composite phase-transition material.Wherein surface modified graphite alkene in the composite mass content be 4%.
In addition, as a comparison case, same procedure is adopted to prepare composite phase-change material with unmodified Graphene for heat conductive filler carries out modification to capric acid.Heat conductivility test result shows, the heat conductivility of the high-heat-conducting composite phase-transition material prepared by the present embodiment is 1.3 times of comparative example, and heat conductivility remains unchanged after 5 thermal cyclings.
Embodiment 5
(1) 1g carbon nanotube under agitation being joined 250mL mass concentration is in the aqueous dopamine solution of 2%, after 1500rpm stirs 3 hours, and then ultrasonic disperse 30 minutes (ultrasonic frequency 25KHZ, power 200W), after filtration, namely obtain surface-modified carbon nanotubes after drying.
(2) take 10g palmitinic acid and be heated to fusing, again surface-modified carbon nanotubes is joined in palmitinic acid liquation, continue heating ultrasonic 40 minutes (ultrasonic frequency 25KHZ, power 400W) make even carbon nanotube be dispersed in palmitinic acid liquation, finally mixed solution is poured in Standard Module and naturally cool to that namely self-vulcanizing is shaping obtains high-heat-conducting composite phase-transition material.Wherein surface-modified carbon nanotubes mass content in composite phase-change material is 5%.
In addition, as a comparison case, same procedure is adopted to prepare composite phase-change material with unmodified carbon nanotube for heat conductive filler carries out modification to palmitinic acid.Heat conductivility test result shows, the heat conductivility of the high-heat-conducting composite phase-transition material prepared by the present embodiment is 1.6 times of comparative example, and, after 5 thermal cyclings, still keep higher heat conductivility.
Embodiment 6
(1) 2g nano graphite flakes is under agitation joined the N that 500mL mass concentration is the trimeric cyanamide of 5%, in N-dimethyl sulphoxide solution, after 1000rpm stirs 5 hours, and then ultrasonic disperse 40 minutes (ultrasonic frequency 25KHZ, power 300W), after filtration, namely obtain surface-modified nano graphite flake after drying.
(2) take 10g eicosanoic acid and be heated to fusing, again surface-modified nano graphite flake is joined in eicosanoic acid liquation, continue heating ultrasonic 90 minutes (ultrasonic frequency 25KHZ, power 500W) make nano graphite flakes be dispersed in eicosanoic acid liquation, finally mixed solution is poured in Standard Module and naturally cool to that namely self-vulcanizing is shaping obtains high-heat-conducting composite phase-transition material.Wherein surface-modified nano graphite flake mass content in composite phase-change material is 10%.
In addition, as a comparison case, same procedure is adopted to prepare composite phase-change material with unmodified nano graphite flakes for heat conductive filler carries out modification to eicosanoic acid.Heat conductivility test result shows, the heat conductivility of the high-heat-conducting composite phase-transition material prepared by the present embodiment is 1.6 times of comparative example, and heat conductivility remains unchanged after 5 thermal cyclings.
Embodiment 7
(1) 0.5g Graphene is under agitation joined the N that 50mL mass concentration is the sodium humate of 4%, in dinethylformamide solution, after 800rpm stirs 5 hours, and then ultrasonic disperse 50 minutes (ultrasonic frequency 25KHZ, power 300W), after filtration, namely obtain surface modified graphite alkene after drying.
(2) take 10g stearic acid-lauric acid mixture (mass ratio 1:1) and be heated to fusing, again surface modified graphite alkene is joined in stearic acid-lauric acid mixture liquation, continue heating ultrasonic 20 minutes (ultrasonic frequency 25KHZ, power 100W) make graphene uniform be dispersed in the liquation of stearic acid-lauric acid mixture, finally mixed solution is poured in Standard Module and naturally cool to that namely self-vulcanizing is shaping obtains high-heat-conducting composite phase-transition material.Wherein surface modified graphite alkene in the composite mass content be 1%.
In addition, as a comparison case, same procedure is adopted to prepare composite phase-change material with unmodified Graphene for heat conductive filler carries out modification to stearic acid-lauric acid.Heat conductivility test result shows, the heat conductivility of the high-heat-conducting composite phase-transition material prepared by the present embodiment is apparently higher than comparative example, and heat conductivility remains unchanged after 5 thermal cyclings.
Embodiment 8
(1) 1g carbon nanotube is under agitation joined the Dopamine HCL N that 500mL mass concentration is 4%, in dinethylformamide solution, after 1200rpm stirs 3 hours, and then ultrasonic disperse 20 minutes (ultrasonic frequency 25KHZ, power 100W), after filtration, namely obtain surface modification after drying and receive carbon nanotube.
(2) take 10g capric acid-lauric acid mixture (mass ratio 3:1) and be heated to fusing, again surface-modified carbon nanotubes is joined in the liquation of capric acid-lauric acid mixture, continue heating ultrasonic 30 minutes (ultrasonic frequency 25KHZ, power 200W) make even carbon nanotube be dispersed in the liquation of capric acid-lauric acid mixture, finally mixed solution is poured in Standard Module and naturally cool to that namely self-vulcanizing is shaping obtains high-heat-conducting composite phase-transition material.Wherein surface-modified carbon nanotubes in the composite mass content be 3%.
In addition, as a comparison case, same procedure is adopted to prepare composite phase-change material with unmodified carbon nanotube for heat conductive filler carries out modification to capric acid-lauric acid.Heat conductivility test result shows, the thermal conductivity of the high-heat-conducting composite phase-transition material prepared by the present embodiment is 0.288W/mK, and the thermal conductivity of comparative example is 0.176W/mK, and heat conductivility remains unchanged after 5 thermal cyclings.
Embodiment 9
(1) 1.2g carbon nanotube is under agitation joined the trimeric cyanamide N that 400mL mass concentration is 3%, in N-dimethyl sulphoxide solution, after 1000rpm stirs 4 hours, and then ultrasonic disperse 30 minutes (ultrasonic frequency 25KHZ, power 200W), after filtration, namely obtain surface-modified nano graphite flake after drying.
(2) take 10g capric acid-eicosanoic acid mixture (mass ratio 1:2) and be heated to fusing, again surface-modified carbon nanotubes is joined in the liquation of capric acid-stearic acid mixture, continue heating ultrasonic 30 minutes (ultrasonic frequency 25KHZ, power 300W) make even carbon nanotube be dispersed in the liquation of capric acid-eicosanoic acid mixture, finally mixed solution is poured in Standard Module and naturally cool to that namely self-vulcanizing is shaping obtains high-heat-conducting composite phase-transition material.Wherein surface-modified carbon nanotubes in the composite mass content be 4%.
In addition, as a comparison case, same procedure is adopted to prepare composite phase-change material with unmodified carbon nanotube for heat conductive filler carries out modification to capric acid-eicosanoic acid mixture.Heat conductivility test result shows, the thermal conductivity of the high-heat-conducting composite phase-transition material prepared by the present embodiment is 0.315W/mK, and the thermal conductivity of comparative example is 0.208W/mK, and heat conductivility remains unchanged after 5 thermal cyclings.
Embodiment 10
(1) 2g nano graphite flakes under agitation being joined 400mL mass concentration is in the sodium humate aqueous solution of 1%, after 1000rpm stirs 5 hours, and then ultrasonic disperse 40 minutes (ultrasonic frequency 25KHZ, power 500W), after filtration, namely obtain surface-modified nano graphite flake after drying.
(2) take 10g eicosanoic acid-palmitic acid mixture (mass ratio 2:1) and be heated to fusing, again surface-modified nano graphite flake is joined in the liquation of eicosanoic acid-palmitic acid mixture, continue heating ultrasonic 40 minutes (ultrasonic frequency 25KHZ, power 400W) make nano graphite flakes be dispersed in eicosanoic acid-palmitic acid mixture liquation, finally mixed solution is poured in Standard Module and naturally cool to that namely self-vulcanizing is shaping obtains high-heat-conducting composite phase-transition material.Wherein surface-modified nano graphite flake in the composite mass content be 6%.
In addition, as a comparison case, same procedure is adopted to prepare composite phase-change material with unmodified nano graphite flakes for heat conductive filler carries out modification to eicosanoic acid-palmitic acid mixture.Heat conductivility test result shows, the thermal conductivity of the high-heat-conducting composite phase-transition material prepared by the present embodiment is 0.425W/mK, and the thermal conductivity of comparative example is 0.281W/mK, improves 50%, and, after 5 thermal cyclings, still keep higher heat conductivility.Embodiment 11
(1) 1.2g Graphene is under agitation joined the Dopamine HCL N that 200mL mass concentration is 4%, in dinethylformamide solution, after 1800rpm stirs 4 hours, and then ultrasonic disperse 50 minutes (ultrasonic frequency 25KHZ, power 400W), after filtration, namely obtain surface modified graphite alkene after drying.
(2) take 10g Stearic-palmitic acid mixture (mass ratio 1:4) and be heated to fusing, again surface modified graphite alkene is joined in the liquation of Stearic-palmitic acid mixture, continue heating ultrasonic 50 minutes (ultrasonic frequency 25KHZ, power 100W) make modified graphene be dispersed in the liquation of Stearic-palmitic acid mixture, finally mixed solution is poured in Standard Module and naturally cool to that namely self-vulcanizing is shaping obtains high-heat-conducting composite phase-transition material.Wherein surface modified graphite alkene in the composite mass content be 3%.
In addition, as a comparison case, same procedure is adopted to prepare composite phase-change material with unmodified Graphene for heat conductive filler carries out modification to Stearic-palmitic acid mixture.Heat conductivility test result shows, the heat conductivility of the high-heat-conducting composite phase-transition material prepared by the present embodiment is apparently higher than comparative example, and heat conductivility remains unchanged after 5 thermal cyclings.
The thermal conductivity K of above embodiment gained composite phase-change material
m, the unmodified heat conductive filler-fatty acid combined phase change material of comparative example thermal conductivity K
0and the ratio b of thermal conductivity before the thermal conductivity of composite phase-change material after 5 heating-refrigeration cycle and thermal cycling lists in table 1.
Table 1
| Thermally conductive material | Thermal conductivity K m(W/m·K) | K 0(W/m·K) | b |
| Embodiment 1 | 0.396 | 0.26 | 0.999 |
| Embodiment 2 | 0.459 | 0.287 | 0.997 |
| Embodiment 3 | 0.25 | 0.207 | 0.999 |
| Embodiment 4 | 0.305 | 0.235 | 0.999 |
| Embodiment 5 | 0.347 | 0.215 | 0.999 |
| Embodiment 6 | 0.481 | 0.301 | 0.996 |
| Embodiment 7 | 0.232 | 0.208 | 0.999 |
| Embodiment 8 | 0.288 | 0.176 | 0.999 |
| Embodiment 9 | 0.315 | 0.208 | 0.999 |
| Embodiment 10 | 0.425 | 0.281 | 0.998 |
| Embodiment 11 | 0.329 | 0.259 | 0.999 |
As can be seen from table 1 result: the heat conductivility of high-heat-conducting composite phase-transition material of the present invention is apparently higher than unmodified filler-fatty acid combined phase change material, and, after 5 heating-cooling heat circulations, high-heat-conducting composite phase-transition material of the present invention still keeps higher heat conductivility.Therefore, high-heat-conducting composite phase-transition material provided by the invention has the advantage of excellent thermal conductivity, stable in properties.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (8)
1. a high-heat-conducting composite phase-transition material, is characterized in that: described composite phase-change material comprises carbon-based nano heat conductive filler and the lipid acid of surface modification; The carbon-based nano heat conductive filler of described surface modification is the one in the nano graphite flakes of surface modification, Graphene or carbon nanotube; Described lipid acid is one or more the mixing in capric acid, capric acid, lauric acid, tetradecanoic acid, palmitinic acid, stearic acid and eicosanoic acid.
2. a kind of high-heat-conducting composite phase-transition material according to claim 1, is characterized in that: the mass percentage of carbon-based nano heat conductive filler in composite phase-change material of described surface modification is 1% ~ 10%.
3. the preparation method of a kind of high-heat-conducting composite phase-transition material described in claim 1 or 2, is characterized in that comprising following preparation process:
(1) carbon-based nano heat conductive filler is dispersed in surface modifier solution, is uniformly mixed rear supersound process, then after filtration, washing, obtain the carbon-based nano heat conductive filler of surface modification after drying; Described surface-modifying agent is trimeric cyanamide, sodium humate or Dopamine HCL;
(2) lipid acid is heated to fusing, again the carbon-based nano heat conductive filler of surface modification is joined in lipid acid liquation, continue heating supersound process, obtain homodisperse lipid acid mixed solution, finally mixed solution is imported curing molding in mould, namely obtain high-heat-conducting composite phase-transition material.
4. the preparation method of a kind of high-heat-conducting composite phase-transition material according to claim 3, is characterized in that: the rotating speed stirred described in step (1) is 800 ~ 2000rpm, and the time is 1 ~ 5 hour; The time of described supersound process is 20 ~ 60 minutes.
5. the preparation method of a kind of high-heat-conducting composite phase-transition material according to claim 3, is characterized in that: the solvent that described surface modifier solution uses is N, N-dimethyl sulfoxide (DMSO), water or DMF.
6. the preparation method of a kind of high-heat-conducting composite phase-transition material according to claim 3, is characterized in that: in described surface modifier solution, the mass concentration of surface-modifying agent is 1% ~ 5%; The described carbon-based nano heat conductive filler concentration be dispersed in surface modifier solution is 2 ~ 10mg/mL.
7. the preparation method of a kind of high-heat-conducting composite phase-transition material according to claim 3, is characterized in that: the time of supersound process described in step (2) is 20 ~ 90 minutes.
8. the preparation method of a kind of high-heat-conducting composite phase-transition material according to claim 3, is characterized in that: described in step (1) and step (2), ultrasonic frequency is 25KHZ, and power is 100 ~ 500W.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294063A (en) * | 2008-04-01 | 2008-10-29 | 上海第二工业大学 | Process for synthesizing carbon compound phase transformation heat accumulating material containing nano-tube |
| CN101462713A (en) * | 2007-12-20 | 2009-06-24 | 索尼株式会社 | Method for processing carbon nano-tube, carbon nano-tube and carbon nano-tube device |
| CN102321279A (en) * | 2011-09-29 | 2012-01-18 | 北京化工大学 | Dopamine modified carbon nanotube/rubber composite material and preparation method thereof |
| CN102976307A (en) * | 2012-12-04 | 2013-03-20 | 北京化工大学 | Carbon nano tube surface functionalization method |
| CN104592947A (en) * | 2013-11-03 | 2015-05-06 | 中国石油化工股份有限公司 | Flame-retardant organic phase-change material and preparation method thereof |
-
2015
- 2015-12-15 CN CN201510937124.7A patent/CN105524595A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462713A (en) * | 2007-12-20 | 2009-06-24 | 索尼株式会社 | Method for processing carbon nano-tube, carbon nano-tube and carbon nano-tube device |
| CN101294063A (en) * | 2008-04-01 | 2008-10-29 | 上海第二工业大学 | Process for synthesizing carbon compound phase transformation heat accumulating material containing nano-tube |
| CN102321279A (en) * | 2011-09-29 | 2012-01-18 | 北京化工大学 | Dopamine modified carbon nanotube/rubber composite material and preparation method thereof |
| CN102976307A (en) * | 2012-12-04 | 2013-03-20 | 北京化工大学 | Carbon nano tube surface functionalization method |
| CN104592947A (en) * | 2013-11-03 | 2015-05-06 | 中国石油化工股份有限公司 | Flame-retardant organic phase-change material and preparation method thereof |
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| CN108587572A (en) * | 2018-05-14 | 2018-09-28 | 长沙理工大学 | It is a kind of using ultra-thin graphite slice as the composite phase-change heat-storage material of amorphous matrix and preparation method |
| CN108997979A (en) * | 2018-07-09 | 2018-12-14 | 西南交通大学 | A kind of compound paraffin phase change material and preparation method thereof |
| CN111184060A (en) * | 2019-12-30 | 2020-05-22 | 大有作为(天津)冷链设备有限公司 | Fruit and vegetable fresh-keeping box with electric commercial cold chain |
| CN113652204A (en) * | 2021-08-16 | 2021-11-16 | 广东工业大学 | Flexible heat-conducting phase-change gel material and preparation method and application thereof |
| CN113652204B (en) * | 2021-08-16 | 2022-08-02 | 广东工业大学 | Flexible heat-conducting phase-change gel material and preparation method and application thereof |
| CN114316922A (en) * | 2022-01-13 | 2022-04-12 | 郑州大学 | Composite phase change material for encapsulating lauric acid and preparation method thereof |
| CN114316922B (en) * | 2022-01-13 | 2023-08-22 | 郑州大学 | Composite phase change material for packaging lauric acid and preparation method thereof |
| CN115260994A (en) * | 2022-07-23 | 2022-11-01 | 中国电建集团华东勘测设计研究院有限公司 | Polyol nanocomposite phase change material with high heat storage energy density and power density |
| CN115260994B (en) * | 2022-07-23 | 2023-12-26 | 中国电建集团华东勘测设计研究院有限公司 | Polyol nanocomposite phase change material with high heat storage energy density and power density |
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