CN114316328A - High-thermal-conductivity insulating radiating fin for new energy battery and preparation method thereof - Google Patents
High-thermal-conductivity insulating radiating fin for new energy battery and preparation method thereof Download PDFInfo
- Publication number
- CN114316328A CN114316328A CN202210061527.XA CN202210061527A CN114316328A CN 114316328 A CN114316328 A CN 114316328A CN 202210061527 A CN202210061527 A CN 202210061527A CN 114316328 A CN114316328 A CN 114316328A
- Authority
- CN
- China
- Prior art keywords
- parts
- heat
- conducting
- insulating
- insulating heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application relates to a high-heat-conductivity insulating radiating fin for a new energy battery and a preparation method thereof, the high-heat-conductivity insulating radiating fin comprises a heat conduction layer and a heat conduction insulating layer connected with the heat conduction layer, the heat conduction layer is a graphene heat conduction radiating film, the heat conduction insulating layer is formed by coating insulating heat conduction paint, and the graphene heat conduction radiating film is prepared from the following raw materials in parts by weight: 35-45 parts of 4,4 '-oxydiphthalic anhydride, 32-43 parts of 4,4' -diaminodiphenyl ether, 130 parts of N-methyl-2-pyrrolidone, 5-8 parts of hexagonal boron nitride, 20-30 parts of graphene and 1-2 parts of a coupling agent; the insulating heat-conducting coating is prepared from the following raw materials in parts by weight: 20-30 parts of insulating heat-conducting agent, 1-1.5 parts of ethylene-ethyl acrylate copolymer and 30-40 parts of diluent; the insulating heat-conducting agent is prepared from methyl phenyl silicone oil and insulating heat-conducting filler. The radiating fin has the advantages of being good in insulating performance and radiating effect.
Description
Technical Field
The application relates to the technical field of heat conduction materials, in particular to a high-heat-conduction insulating radiating fin for a new energy battery and a preparation method thereof.
Background
The heat dissipation film is a layer of heat conduction and heat dissipation film used on a mobile phone, a tablet computer and the like, and most heat dissipation materials used in the market at present are a natural graphite heat dissipation film, an artificial graphite heat dissipation film, a graphene heat dissipation film and a nano-carbon heat dissipation film.
At present, the heat dissipation for the new energy battery is mainly performed through water, but the water heat dissipation is slow and troublesome, so that the graphene film is proposed to perform the heat dissipation for the new energy battery. The graphene heat dissipation film has good heat dissipation performance, but also has good conductivity, so that current can pass through the graphene film, and when the graphene film is used for a new energy battery, electric leakage may be caused, and therefore the graphene film needs to be improved.
Disclosure of Invention
In order to solve the technical problem, the application provides a high-thermal-conductivity insulating heat sink for a new energy battery and a preparation method thereof.
In a first aspect, the application provides a high thermal conductivity insulating heat sink for a new energy battery, which adopts the following technical scheme:
the utility model provides a high heat conduction insulating fin for new energy battery, includes the heat-conducting layer and connects the heat-conducting layer's heat conduction insulating layer, the heat-conducting layer is graphite alkene heat conduction heat dissipation membrane, the heat conduction insulating layer forms for insulating heat conduction coating, graphite alkene heat conduction heat dissipation membrane is made by including following part by weight raw materials:
4,4' -oxydiphthalic anhydride: 35-45 parts of
4,4' -diaminodiphenyl ether: 32 to 43 portions of
N-methyl-2-pyrrolidone: 120 portions to 130 portions
Hexagonal boron nitride: 5-8 parts of
Graphene: 20-30 parts of
Coupling agent: 1-2 parts;
the insulating heat-conducting coating is prepared from the following raw materials in parts by weight:
insulating heat-conducting agent: 20-30 parts of
Ethylene-ethyl acrylate copolymer: 1-1.5 parts
Diluent agent: 30-40 parts;
the insulating heat-conducting agent is prepared from methyl phenyl silicone oil and insulating heat-conducting filler.
The raw materials and the weight parts of the raw materials are the preferable raw material composition and the preferable range of the raw materials, and the radiating fin prepared from the raw materials has better heat conductivity and insulativity. The general radiating fin can be used for radiating batteries such as mobile phones, flat plates and automobiles, when the radiating fin is used, the battery of an electronic product is attached to one surface of the heat conducting layer of the radiating fin, when the radiating fin conducts heat, the heat is transmitted to the heat conducting insulating layer through the effect of the heat conducting layer, the heat is rapidly radiated out of the battery through the heat conducting effect of the heat conducting insulating layer, meanwhile, the heat conducting insulating layer also has an insulating effect, and then current can be prevented from passing through the radiating fin, and the possibility of electric leakage can be reduced.
N-methyl-2-pyrrolidone is used as a solvent, so that 4,4 '-oxydiphthalic anhydride and 4,4' -diaminodiphenyl ether can react conveniently to obtain polyimide, and the polyimide has high temperature resistance and insulating property, so that the insulating property of the radiating fin can be improved; the graphene has better heat-conducting property, so that the graphene heat-conducting and heat-dissipating film has better heat-conducting property; the hexagonal boron nitride has good heat-conducting property, and the heat-conducting property of the graphene heat-conducting and heat-dissipating film is further improved by adding the hexagonal boron nitride; the added coupling agent can modify graphene and hexagonal boron nitride, so that the dispersibility of the graphene and the hexagonal boron nitride in a raw material system of the graphene heat-conducting and heat-dissipating film is improved, and the graphene heat-conducting and heat-dissipating film with uniform dispersion is obtained, so that the heat-conducting performance of the graphene heat-conducting and heat-dissipating film is improved.
The ethylene-ethyl acrylate copolymer has good compatibility and adhesiveness, and is widely applied to the fields of hot melt adhesives, composite film interlayer adhesives, sealing rings, packaging films and the like, so that the adhesiveness of the insulating heat-conducting coating can be improved by adding the ethylene-ethyl acrylate copolymer, and the heat-conducting insulating layer coated with the insulating heat-conducting coating is tightly connected with the graphene heat-conducting heat-dissipating film; and a diluent is added, so that the diluting effect is achieved, and the obtained insulating heat-conducting coating is easier to coat on the surface of the graphene heat-conducting and heat-dissipating film, wherein the diluent is preferably an ethanol solution with the mass fraction of 35-45%.
Methyl phenyl silicone oil has good stability, heat resistance, insulativity, flame resistance and the like, and can be used for insulation, lubrication, damping, high-temperature-resistant heat carriers and the like, and the insulating heat-conducting filler has better insulating property and heat-conducting property, and then the insulating heat-conducting agent prepared through methyl phenyl silicone oil and insulating heat-conducting filler, the heat-conducting insulating layer formed by coating the insulating heat-conducting coating obtained by the insulating heat-conducting agent has better heat-conducting property and insulating property, and then the obtained radiating fin is used for radiating the new energy battery, the radiating effect can be improved, and an insulating effect can be played, and the possibility of electric leakage is reduced.
Preferably, the weight part ratio of the methyl phenyl silicone oil to the insulating heat-conducting filler is 5-20: 1.
The proportion of the raw materials is the ratio of the better parts by weight in the application, and the prepared insulating and heat-conducting coating has better heat conductivity and insulativity in the proportion range.
Preferably, the insulating and heat conducting filler is composed of mica, silicon powder and kaolin.
The mica has better insulating property and heat resistance; the SiO2 content of the silicon powder is about 90 percent, and the silicon powder has better insulating property; meanwhile, the kaolin has better insulating property and heat dissipation performance, after the mica, the silicon powder and the kaolin are mixed for use, the obtained insulating heat-conducting agent is used for coating the insulating heat-conducting coating to form a heat-conducting insulating layer with better heat-conducting property and insulating property, so that the radiating fin has better insulating property and heat dissipation effect, and when the radiating fin is used for radiating the new energy battery, the possibility of electric leakage is reduced.
Preferably, the weight ratio of the mica to the silicon powder to the kaolin is 2-3:1.5-2:1, and the raw materials are in the preferred range, so that the radiating fin has better insulating property and radiating effect.
Preferably, the mesh number of the mica and the mesh number of the kaolin are both 20 to 50 meshes.
In this mesh range, mica and kaolin can be well dispersed in the raw material of the heat sink.
Preferably, the insulating heat-conducting agent is prepared by the following steps;
step 1: weighing 1-3 parts of insulating heat-conducting filler and 50-80 parts of dimethylbenzene by weight, and vibrating for 5-10min to obtain a mixture A;
step 2: weighing 35-39 parts by weight of methylphenyldimethoxysilane and 1.1-1.4 parts by weight of tetramethyldivinyldisiloxane, uniformly mixing, adding the mixture into the mixture A obtained in the step 1, uniformly stirring, and heating to 50-60 ℃ to obtain a mixture B;
and step 3: weighing 3-5 parts by weight of 1.5-2% sodium hydroxide solution in parts by weight, dropwise adding the sodium hydroxide solution into the mixture B obtained in the step 2, uniformly stirring, heating to 70-78 ℃, carrying out hydrolysis reaction for 2-3 hours, heating to 80-95 ℃, carrying out normal pressure distillation, reacting for 4.5-6 hours, heating to 95-110 ℃, and carrying out reduced pressure distillation for 0.5-1 hour to obtain the insulating heat-conducting agent.
The steps are simple to operate and high in production efficiency. Under the action of a catalyst (alkaline solution), further condensing methyl phenyl dimethoxy and tetramethyl divinyl disiloxane to obtain methyl phenyl silicone oil; the insulating heat-conducting filler is added in the process of preparing the methyl phenyl silicone oil, so that the dispersibility of the insulating heat-conducting filler in the methyl phenyl silicone oil is improved, and the insulating heat-conducting agent with uniformly dispersed raw materials is further obtained.
Preferably, the coupling agent is a titanate coupling agent.
The titanate coupling agent has a good coupling effect, can be used for carrying out surface modification on graphene and graphite, enables the graphene and the graphite to be better dispersed in a system of the radiating fin, and further enables the radiating fin to have good thermal conductivity.
In a second aspect, the application provides a method for preparing a high thermal conductivity insulating heat sink for a new energy battery, which comprises the following steps:
graphene heat conduction and dissipation film: weighing 1-2 parts of coupling agent, 5-8 parts of hexagonal boron nitride, 20-30 parts of graphene and 120-130 parts of N-methyl-2-pyrrolidone according to parts by weight, vibrating for 5-10min to obtain a mixture A for later use; weighing 35-45 parts of 4,4 '-oxydiphthalic anhydride and 32-43 parts of 4,4' -diaminodiphenyl ether, uniformly mixing with the mixture A, placing in a closed container, introducing nitrogen, heating to 50-65 ℃, stirring for reacting for 3-5h, preparing a film, heating to 70-80 ℃, reacting for 6-10h, and cooling to obtain a graphene film; carbonizing the graphene film at the temperature of 1200-1300 ℃ for 10-18; after cooling, graphitizing at 2500-;
insulating heat-conducting paint: weighing 20-30 parts of insulating heat-conducting agent, 0.3-0.8 part of adhesive, 1-1.5 parts of ethylene-ethyl acrylate copolymer and 30-40 parts of diluent, and uniformly mixing to obtain insulating heat-conducting coating;
and coating the insulating heat-conducting coating on one surface of the graphene heat-conducting and heat-dissipating film, and heating and curing to obtain the heat-dissipating fin.
The preparation method of the edge radiating fin has the advantages of simple operation and production efficiency.
Preferably, the coating weight of the insulating and heat-conducting coating is 50-180g/m2The coating weight in the range is the preferable coating range of the application, and when the coating weight is more than 180g/m2The thickness of the formed heat conduction insulating layer is increased, so that the heat conduction insulating layer is easy to peel off; when less than 50g/m2In the meantime, the heat dissipation effect and the insulation effect of the heat conduction insulation layer are not good.
Preferably, the heating temperature is 80-105 ℃, and the curing time is 60-80 s. The heating time and the curing time are in the preferable range of the application, when the temperature is lower than 80 ℃, the curing time is too long, so that the production efficiency is low, and when the temperature is higher than 105 ℃, the temperature is too high, and the coating on the surface can be influenced.
In summary, the present application has the following beneficial effects:
1. the insulating heat-conducting agent is prepared by the methyl phenyl silicone oil and the insulating heat-conducting filler, and then the heat-conducting insulating layer formed by coating the insulating heat-conducting coating prepared from the insulating heat-conducting agent has better insulating property and heat-conducting property, so that the obtained radiating fin has better insulating property and heat radiating property.
2. Through selecting for use by mica, silica flour and kaolin as insulating heat conduction filler, all have insulating and heat conduction effect, and then the insulating heat conduction agent that obtains through this insulating heat conduction filler, the insulating heat conduction coating that rethread insulating heat conduction agent obtained is used for the coating to form has better insulation and radiating effect, make the fin that this insulating heat conduction layer was made be used for new energy battery, can play better radiating effect, and can play insulating effect, reduce the possibility of electric leakage.
Detailed Description
The present application is described in further detail below with reference to preparation examples and examples.
In this application, part of the source of the feedstock
Graphene, manufacturer: beijing Germany island gold technologies, Inc., fineness: 0.9-1.2nm, brand: DK nano;
ethylene-ethyl acrylate copolymer, manufacturer: french arkema, brand name: EEA, good number: 5500;
titanate coupling agent, manufacturer: dongguan city Dinghai plastic chemical Co., Ltd, brand: DINGHAI, model: 201; preparation example of insulating Heat-conducting agent
Preparation example 1
An insulating heat-conducting agent is prepared by the following steps:
step 1: weighing 1Kg of mica, 0.6Kg of silicon powder, 0.4Kg of kaolin and 65Kg of xylene, and putting the mixture in ultrasonic waves for vibration for 8min to obtain a mixture A;
step 2: weighing 37Kg of methylphenyldimethoxysilane and 1.3Kg of tetramethyldivinyldisiloxane, uniformly mixing, adding the mixture A obtained in the step 1 into a reaction kettle, uniformly stirring, and heating to 55 ℃ to obtain a mixture B;
and step 3: weighing 4Kg of sodium hydroxide solution with the mass fraction of 2%, dropwise adding the sodium hydroxide solution into the mixture B obtained in the step 2, uniformly stirring, heating to 75 ℃, carrying out hydrolysis reaction for 2.5 hours, heating to 85 ℃, carrying out distillation at normal pressure, reacting for 5 hours, heating to 100 ℃, carrying out reduced pressure distillation for 0.8 hour, removing the solvent and the micromolecule product, and then adding absolute ethyl alcohol for washing to obtain the insulating heat-conducting agent.
Preparation example 2
An insulating heat-conducting agent is prepared by the following steps:
step 1: weighing 0.5Kg of mica, 0.3Kg of silicon powder, 0.2Kg of kaolin and 50Kg of dimethylbenzene, and putting the mixture in ultrasonic waves to vibrate for 8min to obtain a mixture A;
step 2: weighing 35Kg of methylphenyldimethoxysilane and 1.1Kg of tetramethyldivinyldisiloxane, uniformly mixing, adding the mixture A obtained in the step 1 into a reaction kettle, uniformly stirring, and heating to 50 ℃ to obtain a mixture B;
and step 3: weighing 3Kg of sodium hydroxide solution with the mass fraction of 1.5%, dropwise adding the sodium hydroxide solution into the mixture B obtained in the step 2, uniformly stirring, heating to 70 ℃, carrying out hydrolysis reaction for 2 hours, heating to 80 ℃, carrying out distillation at normal pressure, reacting for 4 hours, heating to 90 ℃, carrying out reduced pressure distillation for 0.5 hour, removing the solvent and the micromolecule product, and then adding absolute ethyl alcohol for washing to obtain the insulating heat-conducting agent.
Preparation example 3
An insulating heat-conducting agent is prepared by the following steps:
step 1: weighing 1.5Kg of mica, 0.9Kg of silicon powder, 0.6Kg of kaolin and 50Kg of dimethylbenzene, and putting the mica, the silicon powder, the kaolin and the dimethylbenzene into ultrasonic waves to vibrate for 10min to obtain a mixture A;
step 2: weighing 39Kg of methyl phenyl dimethoxy silane and 1.4Kg of tetramethyl divinyl disiloxane, uniformly mixing, adding the mixture A obtained in the step 1 and the mixture A into a reaction kettle, uniformly stirring, and heating to 60 ℃ to obtain a mixture B;
and step 3: weighing 5Kg of sodium hydroxide solution with the mass fraction of 2.0%, dropwise adding the sodium hydroxide solution into the mixture B obtained in the step 2, uniformly stirring, heating to 78 ℃, carrying out hydrolysis reaction for 3 hours, heating to 95 ℃, carrying out distillation at normal pressure, reacting for 6 hours, heating to 110 ℃, carrying out reduced pressure distillation for 0.5 hour, removing the solvent and the micromolecule product, and then adding absolute ethyl alcohol for washing to obtain the insulating heat-conducting agent.
Preparation of comparative example
Preparation of comparative example 1
Preparation comparative example 1 differs from preparation example 1 in that: mica, silica powder and kaolin are replaced by silicon carbide in equal amount.
Preparation of comparative example 2
Comparative example 2 was prepared to differ from comparative example 1 in that: the preparation method of the preparation comparative example 2 was: weighing 1Kg of mica, 0.6Kg of silicon powder, 0.4Kg of kaolin and 23Kg of methyl phenyl silicone oil, and putting the materials into ultrasonic waves to vibrate for 8min to obtain the insulating heat-conducting agent.
Examples
Example 1
The utility model provides a high heat conduction insulating fin, includes heat-conducting layer and heat conduction insulating layer, and the heat-conducting layer is graphite alkene heat conduction radiating film, and the heat conduction insulating layer is formed for insulating heat conduction coating, and this fin is by including following preparation step:
graphene heat conduction and dissipation film: weighing 1.5Kg of titanate coupling agent, 25Kg of graphene, 6Kg of hexagonal boron nitride and 125 KgN-methyl-2-pyrrolidone, and placing in ultrasonic waves for vibration for 8min to obtain a mixture A for later use; weighing 40Kg of 4,4 '-oxydiphthalic anhydride and 37Kg of 4,4' -diaminodiphenyl ether, uniformly mixing with the mixture A, placing in a closed reaction kettle, introducing nitrogen, heating to 60 ℃, stirring for reacting for 4 hours, placing in an evaporation dish, heating to 75 ℃, reacting for 8 hours, and cooling to obtain a graphene film; putting the graphene film into a carbonization furnace, and carbonizing at 1300 ℃ for 14 h; cooling, graphitizing at 2800 ℃ for 18h, cooling, and calendering by using a calender to obtain the graphene heat conduction and dissipation film;
insulating heat-conducting paint: weighing 25Kg of insulating heat-conducting agent, 1.2Kg of ethylene-ethyl acrylate copolymer and 35Kg of diluent, and uniformly mixing to obtain an insulating heat-conducting coating;
coating the insulating heat-conducting coating on one surface of the graphene heat-conducting and heat-dissipating film, wherein the coating weight is 150g/mm2And heating to 90 ℃ and curing for 70s to obtain the radiating fin. Examples 2 to 8
Examples 2 to 8 are different from example 1 in the amount of each raw material used, the amount of coating, and the temperature and time for heat curing, as shown in tables 1 and 2;
TABLE 1 dosage (Kg) of graphene thermal film
TABLE 2 raw material amount (Kg), coating amount, heating temperature and curing time of the insulating and heat-conducting coating
Comparative example
Comparative example 1
Comparative example 1 differs from examples 1-8 in that: the hexagonal boron nitride is equivalently replaced by zinc oxide.
Comparative example 2
Comparative example 2 differs from examples 1-8 in that: the coating layer is coated by PP (polypropylene), the coating process comprises the steps of firstly melting the PP at 168 ℃, and then coating the molten PP on one surface of the graphene heat-conducting and heat-dissipating film, wherein the coating weight is 150g/mm2And cooling to obtain the radiating fin.
Comparative example 3
Comparative example 3 differs from example 1 in that: the method of making the fin of this comparative example is as follows: weighing 1.5Kg of titanate coupling agent, 25Kg of graphene, 6Kg of hexagonal boron nitride and 125 KgN-methyl-2-pyrrolidone, and placing in ultrasonic waves for vibration for 8min to obtain a mixture A for later use; weighing 40Kg of 4,4 '-oxydiphthalic anhydride and 37Kg of 4,4' -diaminodiphenyl ether, uniformly mixing with the mixture A, placing in a closed reaction kettle, introducing nitrogen, heating to 60 ℃, stirring for reacting for 4 hours, placing in an evaporation dish, heating to 75 ℃, reacting for 8 hours, and cooling to obtain a graphene film; putting the graphene film into a carbonization furnace, and carbonizing at 1300 ℃ for 14 h; and cooling, graphitizing at 2800 ℃ for 18h, cooling, and rolling by using a calender to obtain the radiating fin.
Performance test
The high thermal conductive insulating heat sinks obtained in examples 1 to 7 and comparative examples 1 to 3 were subjected to the following performance tests, as shown in table 3.
Detection method/test method
1. Coefficient of thermal conductivity
The thermal conductivity was tested according to the national standard GB/T2588-2008 using a NETZSCH HY 009 thermal conductivity tester at 25 ℃.
2. Specific heat capacity
Tested according to national standard astm e 1269-11.
3. Heat flux
Tested according to the national standard GB/T2588-2008.
4. Resistance testing
Performed according to GB/1410-2006; detecting the surface resistance and the volume resistance by adopting a volume surface resistivity tester LST-121; when the volume resistance is tested, current flows through the heat conduction insulating layer from the heat conduction layer of the radiating fin; the surface resistance test measured the surface resistance of the thermally conductive insulating layer (note: the resistance was directly tested since the heat sink of comparative example 3 had only one layer); specific data are shown in table 3;
TABLE 3 Experimental data for examples 1-7 and comparative examples 1-3
As can be seen by combining examples 1 to 8 and comparative example 1 and by combining table 3, the thermal conductivity, specific heat capacity, heat flux, surface resistance, and volume resistance of examples 1 to 8 are all higher than those of comparative example 1, which indicates that the thermal dissipation effect and the insulating property of the heat sink employing examples 1 to 8 are both better than those of the heat sink of comparative example 1, and further indicates that the thermal conductivity and the insulating property of the graphene thermal conductive heat dissipation film obtained by employing examples 1 to 8 and using hexagonal boron nitride are both better than those of the graphene thermal conductive heat dissipation film obtained by employing zinc oxide in comparative example 1.
It can be seen from the combination of examples 1 to 8 and comparative example 2 and from table 3 that the thermal conductivity, specific heat capacity, heat flux, surface resistance and volume resistance of examples 1 to 8 are higher than those of comparative example 2, which shows that the heat dissipation effect and insulation performance of the heat sink coated with the insulating and heat-conducting coating of examples 1 to 8 are better than those of the heat sink coated with the hot-melt PP of comparative example 2. And further shows that the heat-conducting insulating layer formed by coating the insulating heat-conducting coating has good heat-conducting property and good insulating property.
As can be seen by combining examples 1 and 4 and table 3, the thermal conductivity, specific heat capacity, heat flux, surface resistance, and volume resistance of examples 1 to 8 are higher than those of example 4, which indicates that the thermal dissipation effect and the insulating property of the heat sink fins of examples 1 to 8 are better than those of comparative example 1, and further indicates that the thermal conductivity and the insulating property of the thermal conductive insulating layer formed by coating the insulating thermal conductive coating material prepared by mixing mica, silicon powder, and kaolin are better than those of the thermal conductive insulating layer formed by coating the insulating thermal conductive coating material prepared by mixing silicon carbide. Furthermore, the heat conducting insulating layer formed by coating the insulating heat conducting coating has good heat conducting performance and insulating performance.
As can be seen by combining example 1 and comparative example 3 and table 3, the thermal conductivity, specific heat capacity, and heat flux of example 1 are all similar to those of comparative example 3, and it is further demonstrated that the thermal conductivity of the graphene heat dissipation film is not affected by the heat dissipation sheet obtained by coating the insulating heat conductive coating, and the heat dissipation sheet can play a better insulating role.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. The utility model provides a high heat conduction insulating fin for new energy battery, includes the heat-conducting layer and connects the heat-conducting layer's heat conduction insulating layer, the heat-conducting layer is graphite alkene heat conduction radiating film, the heat conduction insulating layer forms for insulating heat conduction coating, its characterized in that, graphite alkene heat conduction radiating film is made by including following part by weight raw materials:
4,4' -oxydiphthalic anhydride: 35-45 parts of 4,4' -diaminodiphenyl ether: 32 to 43 portions of
N-methyl-2-pyrrolidone: 120 portions to 130 portions
Hexagonal boron nitride: 5-8 parts of
Graphene: 20-30 parts of
Coupling agent: 1-2 parts;
the insulating heat-conducting coating is prepared from the following raw materials in parts by weight:
insulating heat-conducting agent: 20-30 parts of
Ethylene-ethyl acrylate copolymer: 1-1.5 parts
Diluent agent: 30-40 parts;
the insulating heat-conducting agent is prepared from methyl phenyl silicone oil and insulating heat-conducting filler.
2. The high thermal conductivity insulating heat sink for the new energy battery as claimed in claim 1, wherein: the weight ratio of the methyl phenyl silicone oil to the insulating heat-conducting filler is 5-20: 1.
3. The high thermal conductivity insulating heat sink for the new energy battery as claimed in claim 1, wherein: the insulating heat-conducting filler is composed of mica, silicon powder and kaolin.
4. The high thermal conductivity insulating heat sink for the new energy battery as claimed in claim 3, wherein: the weight ratio of the mica to the silicon powder to the kaolin is 2-3:1.5-2: 1.
5. The high thermal conductivity insulating heat sink for the new energy battery as claimed in claim 4, wherein: the mesh number of the mica and the mesh number of the kaolin are both 20-50 meshes.
6. The high thermal conductivity insulating heat sink for the new energy battery as claimed in claim 1, wherein: the insulating heat-conducting agent is prepared by the following steps:
step 1: weighing 1-3 parts of insulating heat-conducting filler and 50-80 parts of dimethylbenzene by weight, and vibrating for 5-10min to obtain a mixture A;
step 2: weighing 35-39 parts by weight of methylphenyldimethoxysilane and 1.1-1.4 parts by weight of tetramethyldivinyldisiloxane, uniformly mixing, adding the mixture into the mixture A obtained in the step 1, uniformly stirring, and heating to 50-60 ℃ to obtain a mixture B;
and step 3: weighing 3-5 parts by weight of 1.5-2% sodium hydroxide solution in parts by weight, dropwise adding the sodium hydroxide solution into the mixture B obtained in the step 2, uniformly stirring, heating to 70-78 ℃, carrying out hydrolysis reaction for 2-3 hours, heating to 80-95 ℃, carrying out normal pressure distillation, reacting for 4.5-6 hours, heating to 95-110 ℃, and carrying out reduced pressure distillation for 0.5-1 hour to obtain the insulating heat-conducting agent.
7. The high thermal conductivity insulating heat sink for the new energy battery as claimed in claim 1, wherein: the coupling agent is a titanate coupling agent.
8. A method for preparing a high thermal conductive insulating heat sink for a new energy battery according to any one of claims 1 to 7, comprising the steps of:
graphene heat conduction and dissipation film: weighing 1-2 parts of coupling agent, 5-8 parts of hexagonal boron nitride, 20-30 parts of graphene and 120-130 parts of N-methyl-2-pyrrolidone according to parts by weight, vibrating for 5-10min to obtain a mixture A for later use; weighing 35-45 parts of 4,4 '-oxydiphthalic anhydride and 32-43 parts of 4,4' -diaminodiphenyl ether, uniformly mixing with the mixture A, placing in a closed container, introducing nitrogen, heating to 50-65 ℃, stirring for reacting for 3-5h, preparing a film, heating to 70-80 ℃, reacting for 6-10h, and cooling to obtain a graphene film; carbonizing the graphene film at the temperature of 1200-1300 ℃ for 10-18; after cooling, graphitizing at 2500-;
insulating heat-conducting paint: weighing 20-30 parts of insulating heat-conducting agent, 1-1.5 parts of ethylene-ethyl acrylate copolymer and 30-40 parts of diluent, and uniformly mixing to obtain insulating heat-conducting coating;
and coating the insulating heat-conducting coating on one surface of the graphene heat-conducting and heat-dissipating film, and heating and curing to obtain the heat-dissipating fin.
9. The method for preparing the high thermal conductivity insulating heat sink for the new energy battery according to claim 8, wherein the method comprises the following steps: the coating weight of the insulating heat-conducting coating is 50-180g/m2。
10. The method for preparing the high thermal conductivity insulating heat sink for the new energy battery according to claim 8, wherein the method comprises the following steps: the heating temperature is 80-105 ℃, and the curing time is 60-80 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210061527.XA CN114316328B (en) | 2022-01-19 | 2022-01-19 | High-thermal-conductivity insulating radiating fin for new energy battery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210061527.XA CN114316328B (en) | 2022-01-19 | 2022-01-19 | High-thermal-conductivity insulating radiating fin for new energy battery and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114316328A true CN114316328A (en) | 2022-04-12 |
| CN114316328B CN114316328B (en) | 2023-01-24 |
Family
ID=81027985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210061527.XA Active CN114316328B (en) | 2022-01-19 | 2022-01-19 | High-thermal-conductivity insulating radiating fin for new energy battery and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114316328B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115595124A (en) * | 2022-11-11 | 2023-01-13 | 东莞市鸿亿导热材料有限公司（Cn） | Preparation method of graphene phase-change composite material, product and application thereof |
| CN116444838A (en) * | 2023-04-24 | 2023-07-18 | 江苏汉华热管理科技有限公司 | Voltage-resistant high-thermal-conductivity-coefficient organic silicon heat dissipation diaphragm and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205459A (en) * | 2006-12-19 | 2008-06-25 | 成都市兴岷江电热电器有限责任公司 | Cured type heat-conductive daub |
| WO2019143000A1 (en) * | 2018-01-22 | 2019-07-25 | 에스케이씨코오롱피아이 주식회사 | Highly thermally conductive polyimide film comprising two or more types of fillers |
| CN112455034A (en) * | 2020-11-23 | 2021-03-09 | 深圳市金海洋实业发展有限公司 | Graphene/polymer composite heat-conducting insulating film for heat dissipation of new energy automobile battery pack and preparation method thereof |
-
2022
- 2022-01-19 CN CN202210061527.XA patent/CN114316328B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205459A (en) * | 2006-12-19 | 2008-06-25 | 成都市兴岷江电热电器有限责任公司 | Cured type heat-conductive daub |
| WO2019143000A1 (en) * | 2018-01-22 | 2019-07-25 | 에스케이씨코오롱피아이 주식회사 | Highly thermally conductive polyimide film comprising two or more types of fillers |
| CN112455034A (en) * | 2020-11-23 | 2021-03-09 | 深圳市金海洋实业发展有限公司 | Graphene/polymer composite heat-conducting insulating film for heat dissipation of new energy automobile battery pack and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115595124A (en) * | 2022-11-11 | 2023-01-13 | 东莞市鸿亿导热材料有限公司（Cn） | Preparation method of graphene phase-change composite material, product and application thereof |
| CN115595124B (en) * | 2022-11-11 | 2023-11-07 | 东莞市鸿亿导热材料有限公司 | Preparation method of graphene phase-change composite material, and product and application thereof |
| CN116444838A (en) * | 2023-04-24 | 2023-07-18 | 江苏汉华热管理科技有限公司 | Voltage-resistant high-thermal-conductivity-coefficient organic silicon heat dissipation diaphragm and preparation method thereof |
| CN116444838B (en) * | 2023-04-24 | 2023-12-01 | 江苏汉华热管理科技有限公司 | Voltage-resistant high-thermal-conductivity-coefficient organic silicon heat dissipation diaphragm and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114316328B (en) | 2023-01-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114316328B (en) | High-thermal-conductivity insulating radiating fin for new energy battery and preparation method thereof | |
| CN111057379B (en) | High-thermal-conductivity insulating silicone rubber composite material containing carbon fibers and preparation method thereof | |
| CN113698736B (en) | Halogen-free flame-retardant heat-conducting wire insulating layer and preparation method thereof | |
| CN112961657B (en) | Composite heat conduction material and preparation method thereof, heat conduction gel and preparation method thereof | |
| CN103087614A (en) | Insulating heat conduction high-temperature resistant electrical appliance coating and preparation method thereof | |
| CN102746615A (en) | Formula and preparation process of heat-conducting aluminum base copper-clad plate with high heat resistance and high insulation | |
| CN105061855A (en) | Preparation method of thermal conductive electrical insulating material | |
| CN114752221B (en) | Insulating high-heat-conductivity flexible silica gel gasket and preparation method thereof | |
| CN106586983A (en) | Preparation method of aluminum nitride powder used for heat conduction filler | |
| CN109880542A (en) | A kind of ultra-thin one-faced tapes and double faced adhesive tape of High directional thermal conductivity | |
| CN108779386A (en) | Heat release component composition, heat release component, e-machine, the manufacturing method of heat release component composition, the manufacturing method of heat release component | |
| CN115584129A (en) | Heat-conducting silica gel sheet and preparation method thereof | |
| Zhou et al. | Enhancing thermal conductivity of silicone rubber via constructing hybrid spherical boron nitride thermal network | |
| CN110862695A (en) | High-thermal-conductivity high-insulation thermoplastic resin composition and preparation method and application thereof | |
| CN110105767A (en) | A kind of heat conductive flame-retarding insulating materials | |
| CN103524995A (en) | Insulating plastic with high thermal conductivity | |
| CN112708274A (en) | Heat-conducting insulating polyimide film and preparation method thereof | |
| CN115433380B (en) | Manufacturing process of low-volatility heat conducting fin | |
| TW201122024A (en) | Modified bismaleimide resins, preparation method thereof and compositions comprising the same | |
| CN114196186B (en) | Multi-scale insulating heat conduction PC composite material based on nano regulation and control and preparation method thereof | |
| WO2022142648A1 (en) | Organic silicon prepolymer, organic silicon modified epoxy resin, adhesive, and colloid and preparation method therefor | |
| CN114605836A (en) | High-performance silicon oil-based flexible heat-conducting gasket and preparation method thereof | |
| CN114106560A (en) | Preparation method and product of heat-conducting silica gel | |
| CN106280050A (en) | A kind of high thermal conductive silicon rubber laminar composite | |
| CN110483975A (en) | A kind of heat conductive insulating phenolphthalein poly (arylene ether nitrile) ketone composite material and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |