CN103265933A - Phase-change paraffin microcapsules for battery heat management and preparation method thereof - Google Patents
Phase-change paraffin microcapsules for battery heat management and preparation method thereof Download PDFInfo
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- CN103265933A CN103265933A CN2013101736056A CN201310173605A CN103265933A CN 103265933 A CN103265933 A CN 103265933A CN 2013101736056 A CN2013101736056 A CN 2013101736056A CN 201310173605 A CN201310173605 A CN 201310173605A CN 103265933 A CN103265933 A CN 103265933A
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- 239000012188 paraffin wax Substances 0.000 title abstract description 43
- 239000003094 microcapsule Substances 0.000 title abstract description 31
- 238000002360 preparation method Methods 0.000 title abstract description 26
- 238000007726 management method Methods 0.000 title description 25
- 239000012782 phase change material Substances 0.000 abstract description 20
- 239000003995 emulsifying agent Substances 0.000 abstract description 15
- 239000006184 cosolvent Substances 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 229920007962 Styrene Methyl Methacrylate Polymers 0.000 abstract 2
- ADFPJHOAARPYLP-UHFFFAOYSA-N methyl 2-methylprop-2-enoate;styrene Chemical compound COC(=O)C(C)=C.C=CC1=CC=CC=C1 ADFPJHOAARPYLP-UHFFFAOYSA-N 0.000 abstract 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000004945 emulsification Methods 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000000265 homogenisation Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 238000001291 vacuum drying Methods 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 29
- 230000009466 transformation Effects 0.000 description 26
- 238000010438 heat treatment Methods 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000005303 weighing Methods 0.000 description 14
- 239000002253 acid Substances 0.000 description 13
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 13
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- -1 vinylbenzene-methylbenzene olefin Chemical class 0.000 description 12
- 230000008859 change Effects 0.000 description 9
- 239000002131 composite material Substances 0.000 description 9
- 239000000839 emulsion Substances 0.000 description 9
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 9
- 229920001897 terpolymer Polymers 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 8
- 239000007791 liquid phase Substances 0.000 description 8
- VVWRJUBEIPHGQF-UHFFFAOYSA-N propan-2-yl n-propan-2-yloxycarbonyliminocarbamate Chemical compound CC(C)OC(=O)N=NC(=O)OC(C)C VVWRJUBEIPHGQF-UHFFFAOYSA-N 0.000 description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 4
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Natural products CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 230000001804 emulsifying effect Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 239000003999 initiator Substances 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 150000004702 methyl esters Chemical class 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000003828 vacuum filtration Methods 0.000 description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 229920000053 polysorbate 80 Polymers 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention belongs to the field of storage batteries, and relates to the field of battery heat management based on phase-change materials, particularly phase-change paraffin microcapsules for battery heat management and a preparation method thereof. The phase-change paraffin microcapsules are in a shell structure, wherein the outer shell is coated on the inner core; the outer shell is composed of a styrene-methyl methacrylate copolymer; and the inner core is composed of a paraffin organic solid-liquid phase-change material. The preparation method comprises the following steps: proportionally measuring the raw materials, preparing the styrene-methyl methacrylate copolymer, adding a cosolvent, an emulsifier and the paraffin organic solid-liquid phase-change material to carry out homogenization and emulsification, stirring at constant temperature, and carrying out vacuum drying to obtain the target product. The preparation method provided by the invention has the advantages of simpleness, low cost and high yield, and is convenient for mass synthesis; and the prepared phase-change paraffin microcapsules have favorable heat accumulation property, can greatly lower the operating cost of the battery heat management system, and can not have the problems of leakage and volume expansion of the phase-change material.
Description
Technical field
The invention belongs to the store battery field, relate to the battery thermal management field based on phase change material, relate in particular to phase transformation paraffin microcapsule for battery thermal management and preparation method thereof.
Background technology
Because energy shortage and environmental pollution are serious, electromobile and hybrid vehicle enjoy current new energy field to pay close attention to, and power cell equipment is the most key parts of electromobile and hybrid vehicle, and its dynamic property, life-span etc. have determined cost and the performance of whole vehicle.Battery use optimum temps be 10 ~ 50 ℃, battery pile is carried out in the discharge process of actual motion, the temperature that produces but can be up to more than 100 ℃, the temperature that causes of charge and discharge process is unbalanced in addition, these all are the major causes that causes series of cells to lose efficacy.Therefore, the battery management system that comprises the heat management unit becomes and determines electromobile and the business-like gordian technique of hybrid power automobile battery.
No matter be from technical standpoint energy-conservation, that improve the vehicle continual mileage, still from the miniaturization of vehicle, microminiaturized trend, traditional is that the heat management system of heat-eliminating medium all makes total system heaviness, complexity with air, water.In recent years, the heat management system of employing phase change material has caused the concern of many electromobile production firms and battery manufacturers.Application publication number is that the Chinese invention patent of CN102364747A discloses a kind of battery temp management system based on phase change material.Application publication number is that the Chinese invention patent of CN102181270A discloses and a kind ofly meets phase change material and device for lithium cell heat radiation.Application publication number is that U.S.'s patent of invention of CN1418373A discloses a kind of equipment for passive phase change thermal management and method.Application publication number is a kind of composite phase-change material and device for the silica-based solar cell heat radiation of the Chinese invention patent of CN102509741A.These patents have all proposed to utilize phase change material that energy storage system is carried out heat management, the phase change material that relates to mainly is paraffin, aliphatic saturated hydrocarbon etc., because phase change material such as paraffin has problems such as the leakage of liquid and volumetric expansion when undergoing phase transition, thereby reduce the battery heat dispersion, influence dynamic property and the life-span of battery.
Summary of the invention
Occur easily when the objective of the invention is to overcome phase change material and undergoing phase transition leaking and the problem of volumetric expansion, a kind of phase transformation paraffin microcapsule for battery thermal management and preparation method thereof is provided, this preparation method is simple to operate, cost is low, the productive rate height is convenient to a large amount of synthesizing, and the phase transformation paraffin microcapsule heat storage performance for preparing is good, can reduce the running cost of battery thermal management system greatly, the problem of phase change material leakage and volumetric expansion can not occur.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of phase transformation paraffin microcapsule for battery thermal management, described phase transformation paraffin microcapsule is shell structure, outer shell parcel inner sandwich layer, described outer shell is to be made of vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer, described inner sandwich layer is to be made of the organic solid-liquid phase change material of paraffin class.
Series of cells is immersed in the phase transformation paraffin microcapsule, absorb the battery liberated heat and battery temperature is reduced rapidly as the organic solid-liquid phase change material of the paraffin class of inner sandwich layer, the organic solid-liquid phase change material of paraffin class undergoes phase transition after absorbing the battery liberated heat, becomes liquid from solid state transformation.But, owing to be used as the vinylbenzene of outer shell-methylbenzene olefin(e) acid methyl terpolymer parcel and can't flow out, so integral body leakage and the volumetric expansion phenomenon of phase change material can not appear in dispersed fine between the phase transformation paraffin microcapsule particle.
Preferably, the mass percent of the organic solid-liquid phase change material of material paraffin class of the material of described outer shell vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer and inner sandwich layer is 1:0.8 ~ 2.
A kind of preparation method of the phase transformation paraffin microcapsule for battery thermal management, step is as follows:
The first step is 1:2 by mass ratio, gets vinylbenzene, methylbenzene olefin(e) acid methyl esters; And get initiator according to 0.5% of above-mentioned raw materials total mass, described initiator is: Diisopropyl azodicarboxylate or dibenzoyl peroxide;
Second step, above-mentioned raw materials and initiator are joined in the reaction vessels, it is in the nitrogen environment, and successively at 80 ℃ of thermostatically heating 30 ~ 50min, 60 ℃ of thermostatically heating 3 ~ 5h and 100 ℃ of thermostatically heating 1 ~ 2h, obtains vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer;
The 3rd goes on foot, and measures the cosolvent of the second step products therefrom quality 600 ~ 1400%, joins in the second step products therefrom, and fully dissolving obtains solution A, and described cosolvent is: ethyl acetate or methylene dichloride;
The 4th step, by the second step products therefrom quality 80 ~ 200%, take by weighing the organic solid-liquid phase change material of paraffin class and heating and melting after, mix with the 3rd step gained solution A, obtain solution B;
The 5th step, measure the emulsifying agent of the second step products therefrom quality 2%～8%, to the deionized water that wherein adds the second step products therefrom quality 1500-2500%, be heated to emulsifiers dissolve, obtain the composite emulsifying agent solution, described emulsifying agent is: the mixture of one or more in tween-80, polyvinyl alcohol solution or the styrene-maleic anhydride copolymer; The 6th step, the 4th step gained solution B is mixed with the 5th step gained composite emulsifying agent solution, homogenizing emulsifying obtains white emulsion;
In the 7th step, the 6th step gained white emulsion is stirred to cosolvent finishes evaporation under 35-45 ℃;
The 8th step, the 7th step products therefrom is carried out vacuum filtration, drying, namely get the phase transformation paraffin microcapsule for battery thermal management.
Preferably, among the described preparation method, the reaction vessels described in second step is the single port flask.
Preferably, among the described preparation method, in second step, the device that thermostatically heating is used is respectively the thermostat water bath of 80 ℃, 60 ℃ and 100 ℃; In the 7th step, the 6th step gained white emulsion is stirred in 40 ℃ thermostat water bath.
Preferably, among the described preparation method, in second step, described raw material and initiator are successively at 80 ℃ of thermostatically heating 40min, 60 ℃ of thermostatically heating 4h and 100 ℃ of thermostatically heating 1.5h.
Preferably, among the described preparation method, in the 3rd step, the consumption of cosolvent is 800% of the second step products therefrom quality.
Preferably, among the described preparation method, in the 4th step, by 150% of the second step products therefrom quality, take by weighing the organic solid-liquid phase change material of paraffin class.
Preferably, among the described preparation method, in the 5th step, measure 5% emulsifying agent of the second step products therefrom quality, to the deionized water that wherein adds the second step products therefrom quality 2000%.
Preferably, among the described preparation method, in the 5th step, serve as emulsifying agent or for the mass percent of the polyvinyl alcohol solution of component in the emulsifying agent be 5%.
The present invention compared with prior art has following advantage:
1. the preparation method of the present invention's employing has adopted phase separation method, and is simple to operate, simple equipments, and the productive rate height, cost is low, is applicable to scale operation.
2. the present invention prepares the phase transformation paraffin microcapsule for battery thermal management, be difficult for when undergoing phase transition leaking and volumetric expansion, can be widely used in battery thermal management system, replacing traditional air or water is the heat management of heat-eliminating medium, temperature when reducing battery operation has greatly guaranteed performance and the life-span of battery.
Description of drawings
Fig. 1 is preparation technology's schema of product in the embodiment of the invention 1;
Fig. 2 is the cross-sectional view of the phase transformation paraffin microcapsule of preparation in the embodiment of the invention 1;
Fig. 3 is that the phase transformation paraffin microcapsule of preparation in the embodiment of the invention 1 is at the observation figure of microscopically;
Fig. 4 is the differential scanning calorimetric figure of the phase transformation paraffin microcapsule of preparation in the embodiment of the invention 1.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Embodiment 1
The first step takes by weighing vinylbenzene 2.00g, methylbenzene olefin(e) acid methyl esters 4.00g; Take by weighing Diisopropyl azodicarboxylate 0.03g;
Second step, vinylbenzene, methyl methacrylate, the Diisopropyl azodicarboxylate that takes by weighing joined in the single port flask, and after being placed in the nitrogen environment, place 80 ℃, 60 ℃ and 100 ℃ of thermostat water baths successively, carry out 60 ℃ of thermostatically heating of 80 ℃ of thermostatically heating, 3h of 30min and 100 ℃ of thermostatically heating of 1h respectively, reaction obtains vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer;
The 3rd goes on foot, and measures the ethyl acetate of 40mL, joins in the multipolymer of the second step gained, fully after the dissolving, obtains solution A;
The 4th step, by 80% of the second step gained copolymer quality, take by weighing paraffin phase change material and heating and melting after, mix with the 3rd step gained solution A, obtain solution B;
The 5th step, get 0.05g tween-80,0.055g styrene-maleic anhydride copolymer and 7mL mass percent and be 0.5% polyvinyl alcohol, to wherein adding the 90mL deionized water, be heated to dissolving, obtain the composite emulsifying agent solution;
The 6th step, the 4th step gained solution B is mixed with the 5th step gained composite emulsifying agent solution, homogenizing emulsifying obtains white emulsion;
The 7th step was stirred to cosolvent with the 6th step gained white emulsion and finishes evaporation in 35 ℃ thermostat water bath, form the microcapsule of ad hoc structure thereby be separated;
The 8th step, the 7th step products therefrom is carried out vacuum filtration, drying, namely get the phase transformation paraffin microcapsule for battery thermal management.
As shown in Figure 2, Fig. 2 is the sectional view of the phase transformation paraffin microcapsule that is used for battery thermal management of preparation gained in the present embodiment, the outer shell 1 parcel inner sandwich layer 2 of phase transformation paraffin microcapsule.The material of outer shell 1 is vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer, and the material of inner sandwich layer 2 is paraffin phase change material.
As shown in Figure 3, Fig. 3 is that the phase transformation paraffin microcapsule that is used for battery thermal management of preparation gained in the present embodiment is schemed in microscope observation, and the microcapsule dispersiveness of preparing is fine, and obvious shell structure is arranged.
As shown in Figure 4, Fig. 4 is the differential scanning calorimetric figure of the phase transformation paraffin microcapsule that is used for battery thermal management of preparation gained in the present embodiment, be the numerical value of suction heat release of the product of the present embodiment preparation that under the situation of constant temperature rise rate, records, the transformation temperature of each peak value place counter sample of this figure.
Series of cells is immersed in the phase transformation paraffin microcapsule of present embodiment preparation, absorb the battery liberated heat and battery temperature is reduced rapidly as the organic solid-liquid phase change material of the paraffin class of inner sandwich layer 2, the organic solid-liquid phase change material of paraffin class is after absorbing the battery liberated heat, undergo phase transition, become liquid from solid state transformation, but can't flow out owing to be used as the vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer parcel of outer shell 1, so dispersed fine between the phase transformation paraffin microcapsule particle, the integral body that phase change material can not occur is leaked and the volumetric expansion phenomenon.
Embodiment 2
The first step takes by weighing vinylbenzene 2.00g, methylbenzene olefin(e) acid methyl esters 4.00g; Take by weighing Diisopropyl azodicarboxylate 0.03g;
Second step, vinylbenzene, methyl methacrylate, the Diisopropyl azodicarboxylate that takes by weighing joined in the single port flask, and after being placed in the nitrogen environment, place 80 ℃, 60 ℃ and 100 ℃ of thermostat water baths successively, carry out 60 ℃ of thermostatically heating of 80 ℃ of thermostatically heating, 5h of 50min and 100 ℃ of thermostatically heating of 1.5h respectively, reaction obtains vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer;
The 3rd goes on foot, and measures the ethyl acetate of 90mL, joins in the multipolymer of the second step gained, fully after the dissolving, obtains solution A;
The 4th step, by 200% of the second step gained copolymer quality, take by weighing paraffin phase change material and heating and melting after, mix with the 3rd step gained solution A, obtain solution B;
The 5th step, get 0.025g tween-80,0.02g styrene-maleic anhydride copolymer and 15mL mass percent and be 0.5% polyvinyl alcohol, to wherein adding the 150mL deionized water, be heated to dissolving, obtain the composite emulsifying agent solution;
The 6th step, the 4th step gained solution B is mixed with the 5th step gained composite emulsifying agent solution, homogenizing emulsifying obtains white emulsion;
The 7th step was stirred to cosolvent with the 6th step gained white emulsion and finishes evaporation in 45 ℃ thermostat water bath, form the microcapsule of ad hoc structure thereby be separated;
The 8th step, the 7th step products therefrom is carried out vacuum filtration, drying, namely get the phase transformation paraffin microcapsule for battery thermal management.
The first step takes by weighing vinylbenzene 2.00g, methylbenzene olefin(e) acid methyl esters 4.00g; Take by weighing Diisopropyl azodicarboxylate 0.03g;
Second step, vinylbenzene, methyl methacrylate, the Diisopropyl azodicarboxylate that takes by weighing joined in the single port flask, and after being placed in the nitrogen environment, place 80 ℃, 60 ℃ and 100 ℃ of thermostat water baths successively, carry out 60 ℃ of thermostatically heating of 80 ℃ of thermostatically heating, 4h of 40min and 100 ℃ of thermostatically heating of 1.5h respectively, reaction obtains vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer;
The 3rd goes on foot, and measures the ethyl acetate of 55mL, joins in the multipolymer of the second step gained, fully after the dissolving, obtains solution A;
The 4th step, by 150% of the second step gained copolymer quality, take by weighing paraffin phase change material and heating and melting after, mix with the 3rd step gained solution A, obtain solution B;
The 5th step, get 0.01g tween-80,0.015g styrene-maleic anhydride copolymer and 15mL mass percent and be 0.5% polyvinyl alcohol, to wherein adding the 120mL deionized water, be heated to dissolving, obtain the composite emulsifying agent solution;
The 6th step, the 4th step gained solution B is mixed with the 5th step gained composite emulsifying agent solution, homogenizing emulsifying obtains white emulsion;
The 7th step was stirred to cosolvent with the 6th step gained white emulsion and finishes evaporation in 40 ℃ thermostat water bath, form the microcapsule of ad hoc structure thereby be separated;
The 8th step, the 7th step products therefrom is carried out vacuum filtration, drying, namely get the phase transformation paraffin microcapsule for battery thermal management.
Claims (10)
1. phase transformation paraffin microcapsule that is used for battery thermal management, it is characterized in that: described phase transformation paraffin microcapsule is shell structure, outer shell parcel inner sandwich layer, described outer shell is to be made of vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer, and described inner sandwich layer is to be made of the organic solid-liquid phase change material of paraffin class.
2. the phase transformation paraffin microcapsule for battery thermal management as claimed in claim 1, it is characterized in that: the mass percent of the material vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer of described outer shell and the organic solid-liquid phase change material of material paraffin class of inner sandwich layer is 1:0.8 ~ 2.
3. the preparation method of the phase transformation paraffin microcapsule for battery thermal management as claimed in claim 1 is characterized in that step is as follows:
The first step is 1:2 by mass ratio, gets vinylbenzene, methylbenzene olefin(e) acid methyl esters; And get initiator according to 0.5% of above-mentioned raw materials total mass, described initiator is: Diisopropyl azodicarboxylate or dibenzoyl peroxide;
Second step, above-mentioned raw materials and initiator are joined in the reaction vessels, it is in the nitrogen environment, and successively at 80 ℃ of thermostatically heating 30 ~ 50min, 60 ℃ of thermostatically heating 3 ~ 5h and 100 ℃ of thermostatically heating 1 ~ 2h, obtains vinylbenzene-methylbenzene olefin(e) acid methyl terpolymer;
The 3rd goes on foot, and measures the cosolvent of the second step products therefrom quality 600 ~ 1400%, joins in the second step products therefrom, and fully dissolving obtains solution A, and described cosolvent is: ethyl acetate or methylene dichloride;
The 4th step, by the second step products therefrom quality 80 ~ 200%, take by weighing the organic solid-liquid phase change material of paraffin class and heating and melting after, mix with the 3rd step gained solution A, obtain solution B;
The 5th step, measure the emulsifying agent of the second step products therefrom quality 2%～8%, to the deionized water that wherein adds the second step products therefrom quality 1500-2500%, be heated to emulsifiers dissolve, obtain the composite emulsifying agent solution, described emulsifying agent is: the mixture of one or more in tween-80, polyvinyl alcohol solution or the styrene-maleic anhydride copolymer;
The 6th step, the 4th step gained solution B is mixed with the 5th step gained composite emulsifying agent solution, homogenizing emulsifying obtains white emulsion;
In the 7th step, the 6th step gained white emulsion is stirred to cosolvent finishes evaporation under 35-45 ℃;
The 8th step, the 7th step products therefrom is carried out vacuum filtration, drying, namely get the phase transformation paraffin microcapsule for battery thermal management.
4. the preparation method of the phase transformation paraffin microcapsule for battery thermal management as claimed in claim 3, it is characterized in that: the reaction vessels described in second step is the single port flask.
5. the preparation method of the phase transformation paraffin microcapsule for battery thermal management as claimed in claim 3 is characterized in that: in second step, the device that thermostatically heating is used is respectively the thermostat water bath of 80 ℃, 60 ℃ and 100 ℃; In the 7th step, the 6th step gained white emulsion is stirred in 40 ℃ thermostat water bath.
6. as the preparation method of claim 3 or 5 arbitrary described phase transformation paraffin microcapsules for battery thermal management, it is characterized in that: in second step, described raw material and initiator are successively at 80 ℃ of thermostatically heating 40min, 60 ℃ of thermostatically heating 4h and 100 ℃ of thermostatically heating 1.5h.
7. the preparation method of the phase transformation paraffin microcapsule for battery thermal management as claimed in claim 3, it is characterized in that: in the 3rd step, the consumption of cosolvent is 800% of the second step products therefrom quality.
8. the preparation method of the phase transformation paraffin microcapsule for battery thermal management as claimed in claim 3 is characterized in that: in the 4th step, by 150% of the second step products therefrom quality, take by weighing the organic solid-liquid phase change material of paraffin class.
9. the preparation method of the phase transformation paraffin microcapsule for battery thermal management as claimed in claim 3, it is characterized in that: in the 5th step, measure 5% emulsifying agent of the second step products therefrom quality, to the deionized water that wherein adds the second step products therefrom quality 2000%.
10. the preparation method of the phase transformation paraffin microcapsule for battery thermal management as claimed in claim 3 is characterized in that: in the 5th step, serve as emulsifying agent or for the mass percent of the polyvinyl alcohol solution of component in the emulsifying agent be 5%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108682919A (en) * | 2018-05-18 | 2018-10-19 | 中国科学院广州能源研究所 | A kind of system and method for the Li-ion batteries piles heat management based on phase-change microcapsule suspension |
| CN110600168A (en) * | 2019-09-16 | 2019-12-20 | 山东大学 | Liquid cooling charging cable and cooling system applied to electric automobile rapid charging |
| CN112336651A (en) * | 2020-12-10 | 2021-02-09 | 广州市柏菲化妆品有限公司 | Hejoba moisturizing membrane and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108682919A (en) * | 2018-05-18 | 2018-10-19 | 中国科学院广州能源研究所 | A kind of system and method for the Li-ion batteries piles heat management based on phase-change microcapsule suspension |
| CN110600168A (en) * | 2019-09-16 | 2019-12-20 | 山东大学 | Liquid cooling charging cable and cooling system applied to electric automobile rapid charging |
| CN110600168B (en) * | 2019-09-16 | 2020-08-28 | 山东大学 | Liquid cooling charging cable and cooling system applied to electric automobile rapid charging |
| CN112336651A (en) * | 2020-12-10 | 2021-02-09 | 广州市柏菲化妆品有限公司 | Hejoba moisturizing membrane and preparation method thereof |
| CN115386344A (en) * | 2021-05-25 | 2022-11-25 | 中国石油天然气股份有限公司 | Paraffin-based composite phase change microcapsule and preparation method thereof |
| CN113861942A (en) * | 2021-09-14 | 2021-12-31 | 中北大学 | Organic-microcapsule phase change material, preparation method thereof and application thereof in battery thermal management system |
| CN113861942B (en) * | 2021-09-14 | 2024-05-03 | 中北大学 | An organic-microcapsule phase change material and its preparation method and application in battery thermal management system |
| WO2024230441A1 (en) * | 2022-11-29 | 2024-11-14 | 广州纳诺新材料技术有限公司 | Phase-change microcapsule and preparation method therefor, and high-safety lithium battery and preparation method therefor |
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