CN112409997A - Preparation method of bending-resistant composite heat dissipation film and heat dissipation material - Google Patents
Preparation method of bending-resistant composite heat dissipation film and heat dissipation material Download PDFInfo
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Abstract
The invention provides a preparation method of a bending-resistant composite heat dissipation film, which comprises the steps of dispersing heat dissipation fillers and elastomers in a graphite oxide aqueous solution, crosslinking the elastomers in a graphite oxide structure under the action of lipophilic groups and hydrophilic groups of an emulsifier, coating the elastomers and the graphite oxide crosslinked bodies under the action of pressure to form a film, orderly arranging the elastomers and the graphite oxide crosslinked bodies under the action of pressure, and performing the processes of drying, low-temperature reduction, calendering, high-temperature reduction, calendering and high-temperature reduction to obtain the bending-resistant composite heat dissipation film, wherein the obtained bending-resistant composite heat dissipation film not only has good heat dissipation performance, but also has excellent bending resistance. After the bending-resistant composite heat dissipation film provided by the invention is bent back and forth at 150 degrees for 250000 times, the heat conduction coefficient can still be kept above 1100W/mK, and the physical density exceeds 2.0g/cm3The conductivity is more than 8000S/cm.
Description
Technical Field
The invention belongs to the technical field of heat dissipation materials, and particularly relates to a preparation method of a bending-resistant composite heat dissipation film and a heat dissipation material.
Background
With the coming of the 5G era of everything interconnection, the future handheld device is flexible, light and thin, especially the development of folding screen mobile phones and flat panels in recent years has larger power consumption in both software and hardware aspects, and the heat dissipation requirement is correspondingly improved. In the prior art, graphite, graphene and composite materials thereof are mostly adopted as heat dissipation materials, and heat dissipation fins made of graphite, graphene and composite materials thereof have excellent heat dissipation characteristics. For example, the graphene heat sink has a thermal conductivity as high as 1800W/mK and a density of about 1.2-1.9 g/cm3Can satisfy the heat dissipation requirement of the thin and high-functional mobile intelligent device. However, graphite has the characteristics of brittleness and easy cracking, and the existing graphene and graphene composite material radiating fin technology can not break through the characteristics of high bending resistance and high heat conductivity coefficient. Therefore, it is desired to develop a manufacturing process with low cost, high quality, flexibility and high thermal conductivity to prepare a heat dissipation material with good thermal conductivity.
Disclosure of Invention
In order to overcome the above technical problems, the present invention provides a high-toughness, bending-resistant graphite/graphene composite heat sink for mass production, wherein the film is used as a heat dissipation element in wearable devices, foldable electronic products, display devices, handheld devices, semiconductor manufacturing processes, etc. The film exhibits a combination of superior flex times, thermal conductivity, electrical conductivity, electromagnetic shielding, high chemical stability, and is lighter and thinner than metal.
The invention aims to provide a preparation method of a bending-resistant composite heat dissipation film.
Another object of the present invention is to provide a heat dissipating film obtained by the above method.
The preparation method of the bending-resistant composite heat dissipation film provided by the invention comprises the following steps;
(1) taking an oxidized graphite solution, firstly adding a heat dissipation filler, uniformly stirring, then adding an emulsifier, and stirring until the emulsifier is completely dissolved to obtain a first mixed solution;
the heat dissipation filling material comprises one or more of natural graphite, artificial graphite, mesophase carbon, mesophase pitch, mesophase carbon microspheres, single-walled carbon nanotubes, multi-walled carbon nanotubes, carbon fibers, graphene, activated carbon, carbon black, silicon carbide, diamond powder, silver palladium alloy, platinum, nickel, gold, aluminum, copper, silver, aluminum nitride, boron nitride, aluminum oxide, magnesium oxide, silicon dioxide and beryllium oxide;
(2) dissolving a high-molecular elastomer in a solvent to obtain an elastomer dissolved solution, adding the elastomer dissolved solution into the first mixed solution obtained in the step (1), and stirring at the temperature of 25-45 ℃ for 1-24 hours to obtain a second mixed solution;
(3) coating the second mixed liquid obtained in the step (2) into a film, and drying to obtain a dried heat dissipation film;
(4) calcining the dried heat dissipation film obtained in the step (3) for 1-4 h at 100-800 ℃ in an inert gas atmosphere, and then calendering to 70-90% of the thickness of the dried heat dissipation film to obtain a primary calendered heat dissipation film;
(5) carrying out reduction reaction on the initial calendering heat dissipation film obtained in the step (4) at 800-2000 ℃ for 1-24 h; obtaining a reduction heat dissipation film;
(6) and (4) rolling the reduced heat dissipation film obtained in the step (5) to 20-50% of the thickness of the dried heat dissipation film, and then calcining at 2000-3000 ℃ for 1-2 h to obtain the bending-resistant composite heat dissipation film.
The preparation method of the bending-resistant composite heat dissipation film provided by the invention disperses the heat dissipation filler and the elastomer in the graphite oxide aqueous solution, the elastomer is crosslinked in the graphite oxide structure under the action of the lipophilic group and the hydrophilic group of the emulsifier, then the elastomer and the crosslinked graphite oxide are coated into a film under the action of pressure, the crosslinked elastomer and the crosslinked graphite oxide are orderly arranged under the action of pressure, and the obtained bending-resistant composite heat dissipation film material has good heat dissipation performance and excellent bending resistance through the processes of drying, low-temperature reduction, calendering, high-temperature reduction, calendering and high-temperature reduction. After the bending-resistant composite heat dissipation film provided by the invention is bent back and forth at 150 degrees for 250000 times, the heat conduction coefficient can still be kept above 1100W/mK, and the physical density exceeds 2.0g/cm3The conductivity is more than 8000S/cm. The prior art is not known to have graphite and graphene composite material radiating fins which are superior to the characteristics. And the heat conduction performance of the traditional graphite oxide heat dissipation film material is greatly reduced and the loss is about 70 percent when the traditional graphite oxide heat dissipation film material is bent for about 500 times.
According to the preparation method of the bending-resistant composite heat dissipation film, the graphite oxide aqueous solution, the elastomer and the heat dissipation filler are used as base materials, the graphite oxide aqueous solution, the elastomer and the heat dissipation filler are compatible with each other well by using the emulsifier, and then the composite materials are arranged in order by using a pressure coating mode, so that the finally obtained heat dissipation film has good bending resistance after high-temperature reduction; then carrying out low-temperature reduction, removing oxygen-containing functional groups such as hydroxyl, aldehyde group and carboxyl in the graphite oxide, and then carrying out primary calendering to ensure that the elastomer is tightly combined with the graphite oxide sheet; then, high-temperature reduction is carried out, so that the functional groups of the graphite layer are reduced into gas to escape, and at the moment, expansion is generated between the graphite layers; and then, carrying out secondary rolling to improve the density of the graphite sheet, wherein the rolled sheet at the stage is extruded, the graphite crystal lattice can generate defects, and the graphite crystal lattice can be self-repaired under high-temperature carbonization through secondary high-temperature calcination to repair the graphite crystal lattice defects generated by extrusion during rolling, so that the complete crystal lattice ensures that the heat dissipation film has high heat conduction coefficient.
In the step (1), the graphite oxide aqueous solution is prepared from natural graphite, artificial graphite, mesophase carbon, mesophase pitch, mesophase carbon microspheres, single-walled carbon nanotubes, multi-walled carbon nanotubes, carbon fibers, multi-layer graphene (10-30 layers), few-layer graphene (3-10 layers), activated carbon, carbon black or a combination thereof as raw materials by a method in the prior art, namely the raw materials are treated by an oxidant and an intercalator, wherein the oxidant comprises one or more of nitric acid, sodium nitrate and potassium, perchlorate, hydrogen peroxide, sodium permanganate and potassium, phosphorus pentoxide and hydrosulfite, and the intercalator comprises sulfuric acid. Preferably, in the step (1), the concentration of the graphite oxide aqueous solution is 1-10 wt%.
In the method for preparing the bending-resistant composite heat dissipation film, in the step (1), the particle size of the heat dissipation filler is preferably less than 100 μm.
The graphite oxide aqueous solution adopted by the bending-resistant composite heat dissipation film provided by the invention is prepared by taking graphite, carbon microspheres, graphene, carbon fibers and the like as raw materials and performing oxidation intercalation.
In the preparation method of the bending-resistant composite heat dissipation film, preferably, in the step (1), the addition amount of the heat dissipation filler is 0.01-15 wt% of the graphite oxide aqueous solution.
In the preparation method of the bending-resistant composite heat dissipation film, preferably, in the step (1), the emulsifier includes an anionic surfactant, a nonionic surfactant or cellulose.
Preferably, the anionic surfactant includes fatty acid salts, alpha-sulfonic acid fatty acid esters (alpha-SFE), Alkyl benzene sulfonates (Alkyl benzene sulfonate; ABS), Alkyl sulfonates (Alkyl sulfonates; AS), Sodium Dodecyl Sulfate (SDS), Alkyl Polyoxyethylene ether sulfates (AES), sulfosuccinates, Alkyl ether sulfonate sodium salts, Alkyl benzene sulfonate sodium salts, sodium lauryl sulfate, one or more of sodium alkyl benzene sulfonate, sodium 1-hexadecane sulfonate, sodium 1-octadecane sulfonate, sodium 1-pentadecane sulfonate, sodium 1-tetradecane sulfonate, sodium 1-tridecane sulfonate, stearic acid, lauryl alcohol polyoxyethylene ether (Laurylalcohol ethoxylate), secondary alcohol polyoxyethylene ether (secondary alcohol ethoxylate) and special phenol ethoxylate.
Preferably, the nonionic surfactant includes one or more of Fatty acid diethanolamide (Fatty acid diethanolamide), Polyoxyethylene Alkyl Ether (AE), Polyoxyethylene Alkyl Phenol Ether (APE).
Preferably, the cellulose comprises sodium carboxymethyl cellulose, ammonium carboxymethyl cellulose and/or hydroxyethyl cellulose.
In the preparation method of the bending-resistant composite heat dissipation film, preferably, in the step (1), the addition amount of the emulsifier is 0.01-2 wt% of the graphite oxide aqueous solution.
The emulsifier adopted by the invention can reduce the interfacial tension of the aqueous solution, has a compatibilization effect and ensures that all phases are well compatible. And no polymerization inhibition and side reaction.
In the preparation method of the bending-resistant composite heat dissipation film, preferably, in the step (2), the polymer elastomer includes acrylonitrile-butadiene rubber, acrylonitrile-isoprene rubber, acrylonitrile-butadiene-isoprene rubber, styrene-butadiene rubber, chloroprene rubber, butadiene rubber, and isoprene rubber, one or more of natural rubber, ethylene-propylene-diene rubber, butyl rubber, polyvinyl alcohol, styrene resin, acrylic resin, methacrylic resin, organic acid vinyl ester resin, vinyl ether resin, halogen-containing resin, olefin resin, alicyclic olefin resin, polycarbonate resin, polyester resin, polyamide resin, thermoplastic polyurethane resin, polysulfone resin, polyphenylene ether resin, cellulose derivative, and silicone resin. The polymer elastomer used in the present invention includes acrylonitrile-butadiene rubber (NBR), acrylonitrile-isoprene rubber, acrylonitrile-butadiene-isoprene rubber, styrene-butadiene rubber (SBR), Chloroprene Rubber (CR), Butadiene Rubber (BR), Isoprene Rubber (IR), Natural Rubber (NR), ethylene-propylene-diene rubber (EPDM), butyl rubber (IIR), polyvinyl alcohol (PVA), styrene resin, acrylic resin, methacrylic resin, organic acid vinyl ester resin, vinyl ether resin, halogen-containing resin, olefin resin, alicyclic olefin resin, polycarbonate resin, polyester resin, polyamide resin, thermoplastic polyurethane resin, polysulfone resin (e.g., polyethersulfone, polysulfone, etc.), polyphenylene ether resin (e.g., 2, polymers of 6-xylenol, etc.), cellulose derivatives (e.g., cellulose esters, cellulose carbamates, cellulose ethers, etc.), silicone resins (e.g., polydimethylsiloxane, polymethylphenylsiloxane, etc.), and the like.
In the preparation method of the bending-resistant composite heat dissipation film, preferably, in the step (2), the addition amount of the polymer elastomer is 0.01-10 wt% of the graphite oxide aqueous solution. The macromolecular elastomer and the graphite oxide aqueous solution in the bending-resistant composite heat dissipation film are proportioned according to the proportion, so that the heat dissipation film has high heat dissipation performance and bending resistance.
In the preparation method of the bending-resistant composite heat dissipation film, preferably, in the step (3), the coating pressure of the pressure coating film is 1-4 kg/cm2. Preferably, the pressure Coating method adopted by the invention can be one or more of slot die Coating, slot die bead Coating, open-edge roll-around Coating, three-roll Coating, reverse three-roll Coating, five-roll Coating, comma knife Coating, reverse comma knife Coating, micro-gravure Coating, reverse gravure Coating, spray Coating, dip Coating, intrusive dip Coating, extrusion Coating, inclined plate Coating, power Coating, Mayer Bar Coating, tension regulation and control type slot Coating, tension regulation and control type roll Coating, closed knife Coating and novel D-Bar Coating.
In the above method for preparing a bending-resistant composite heat dissipation film, preferably, in step (3), the drying conditions are as follows: the temperature is 25-200 ℃, the humidity is 10-80%, and the time is 10-24 h.
Preferably, in the step (4), the inert gas is introduced at a rate of 50-150 cm3/min。
The invention provides a heat dissipation film which is prepared by the method.
The invention has the beneficial effects that:
1. the preparation method of the bending-resistant composite heat dissipation film provided by the invention comprises the steps of dispersing heat dissipation filler and an elastomer in a graphite oxide aqueous solution, crosslinking the elastomer in a graphite oxide structure under the action of a lipophilic group and a hydrophilic group of an emulsifier, coating the elastomer and the graphite oxide in a film under the action of pressure, orderly arranging the elastomer and the crosslinked graphite oxide body under the action of pressure, and performing the processes of drying, low-temperature reduction, calendering, high-temperature reduction, calendering and high-temperature reduction to obtain the bending-resistant composite heat dissipation film, wherein the obtained bending-resistant composite heat dissipation film has good heat dissipation performance and excellent bending resistance.
2. After the bending-resistant composite heat dissipation film provided by the invention is bent back and forth at 150 degrees for 250000 times, the heat conduction coefficient can still be kept above 1100W/mK, and the physical density exceeds 2.0g/cm3The conductivity is more than 8000S/cm.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a graph showing the results of testing the thermal conductivity of a heat dissipating film of the prior art after bending in accordance with example 1.
FIG. 2 is a graph showing the in-plane thermal conductivity test results of the bending-resistant composite heat dissipating film obtained in example 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1
A preparation method of a bending-resistant composite heat dissipation film comprises the following steps:
(1) taking a 4 wt% graphite oxide aqueous solution, firstly adding a heat dissipation filling material single-walled carbon nanotube, uniformly stirring, then adding an emulsifier sodium dodecyl sulfate, and stirring until the emulsifier is completely dissolved to obtain a first mixed solution;
the length of the single-walled carbon nanotube of the heat dissipation filler is less than 100 mu m;
the addition amount of the single-walled carbon nanotube of the heat dissipation filler is 1.5 wt% of the graphite oxide aqueous solution;
the addition amount of the emulsifier sodium dodecyl sulfate is 0.01 wt% of the graphite oxide aqueous solution;
(2) dissolving a high-molecular elastomer butyronitrile-isoprene rubber into a methyl ethyl ketone solvent according to the weight ratio of 1:9 to obtain an elastomer dissolved solution, adding the elastomer dissolved solution into the first mixed solution obtained in the step (1), wherein the adding amount of the high-molecular elastomer is 0.01 wt% of the graphite oxide aqueous solution, and stirring for 24 hours at the temperature of 25 ℃ to obtain a second mixed solution;
(3) coating the second mixed liquid obtained in the step (2) into a film at the coating pressure of 1kg/cm2Drying for 24 hours at the temperature of 25 ℃ and the humidity of 50% to obtain a drying heat dissipation film;
(4) calcining the dried heat dissipation film obtained in the step (3) in an inert gas atmosphere at 200 ℃ for 4h, wherein the introducing speed of the inert gas is 50cm3The temperature is controlled to be 85 percent of the thickness of the dry heat dissipation film after the temperature is controlled to be within a range of one minute, and the initial calendering heat dissipation film is obtained;
(5) carrying out reduction reaction on the primary calendering heat dissipation film obtained in the step (4) at 1700 ℃ for 1 h; obtaining a reduction heat dissipation film;
(6) and (4) rolling the reduced heat dissipation film obtained in the step (5) to 50% of the thickness of the dried heat dissipation film, and then calcining at 3000 ℃ for 2h to obtain the bending-resistant composite heat dissipation film.
Example 2
A preparation method of a bending-resistant composite heat dissipation film comprises the following steps:
(1) taking a graphite oxide aqueous solution with the concentration of 10 wt%, firstly adding graphene with 3-10 layers of heat dissipation fillers, uniformly stirring, then adding an emulsifier sodium alkyl benzene sulfonate, and stirring until the emulsifier is completely dissolved to obtain a first mixed solution;
the particle size of 3-10 layers of graphene of the heat dissipation filler is less than 100 microns;
the adding amount of the 3-10 layers of graphene of the heat dissipation filling material is 15 wt% of the graphite oxide aqueous solution;
the addition amount of the emulsifier sodium alkyl benzene sulfonate is 2 wt% of the graphite oxide aqueous solution;
(2) dissolving high molecular elastomer polyvinyl alcohol in pure water according to the weight ratio of 4:96 to obtain an elastomer dissolved solution, adding the elastomer dissolved solution into the first mixed solution obtained in the step (1), wherein the adding amount of the high molecular elastomer is 10 wt% of the graphite oxide aqueous solution, and stirring for 1h at the temperature of 45 ℃ to obtain a second mixed solution;
(3) coating the second mixed liquid obtained in the step (2) into a film at the coating pressure of 4kg/cm2Drying for 10 hours at the temperature of 200 ℃ and the humidity of 80% to obtain a dry heat dissipation film;
(4) calcining the dried heat dissipation film obtained in the step (3) for 1h at 800 ℃ in an inert gas atmosphere, wherein the introduction rate of the inert gas is 150cm3The temperature is controlled to be 70% of the thickness of the dry heat dissipation film, and then the primary calendering heat dissipation film is obtained;
(5) carrying out reduction reaction on the primary calendering radiating film obtained in the step (4) at 2000 ℃ for 12 h; obtaining a reduction heat dissipation film;
(6) and (4) rolling the reduced heat dissipation film obtained in the step (5) to 20% of the thickness of the dried heat dissipation film, and then calcining at 2000 ℃ for 2h to obtain the bending-resistant composite heat dissipation film.
Example 3
A preparation method of a bending-resistant composite heat dissipation film comprises the following steps:
(1) taking a graphite oxide aqueous solution with the concentration of 1 wt%, firstly adding heat dissipation filler alumina, uniformly stirring, then adding emulsifier sodium dodecyl sulfate, and stirring until the emulsifier is completely dissolved to obtain a first mixed solution;
the grain diameter of the heat dissipation filler aluminum oxide is less than 100 mu m;
the adding amount of the heat dissipation filler aluminum oxide is 0.01 wt% of the graphite oxide aqueous solution;
the addition amount of the emulsifier sodium dodecyl sulfate is 0.5 wt% of the graphite oxide aqueous solution;
(2) dissolving a high-molecular elastomer butyronitrile-isoprene rubber into a methyl ethyl ketone solvent according to the weight ratio of 1:9 to obtain an elastomer dissolved solution, adding the elastomer dissolved solution into the first mixed solution obtained in the step (1), wherein the adding amount of the high-molecular elastomer is 2 wt% of the graphite oxide aqueous solution, and stirring for 15 hours at the temperature of 40 ℃ to obtain a second mixed solution;
(3) coating the second mixed liquid obtained in the step (2) into a film at the coating pressure of 3kg/cm2Drying for 20 hours at the temperature of 100 ℃ and the humidity of 10% to obtain a dry heat dissipation film;
(4) calcining the dried heat dissipation film obtained in the step (3) in an inert gas atmosphere at 100 ℃ for 2h, wherein the introduction rate of the inert gas is 100cm3The temperature is controlled to be 90% of the thickness of the dry heat dissipation film, and then the initial calendering heat dissipation film is obtained;
(5) carrying out reduction reaction on the initial pressure-casting heat dissipation film obtained in the step (4) at 800 ℃ for 24 hours; obtaining a reduction heat dissipation film;
(6) and (4) rolling the reduced heat dissipation film obtained in the step (5) to 25% of the thickness of the dried heat dissipation film, and then calcining at 2800 ℃ for 1h to obtain the bending-resistant composite heat dissipation film.
Test examples
1. The bending-resistant composite heat dissipation film obtained in example 1 of the present invention and the heat dissipation film obtained in the prior art were used to test the physical and chemical properties of each group, and the results are shown in table 1. Among them, a heat dissipating film (product name PGS-100, manufactured by Panasonic Co., Ltd.) of the prior art is known.
TABLE 1 test results of each group
As can be seen from the results in table 1, the density of the bending-resistant composite heat dissipation film provided in example 1 of the present invention is greater than that of the heat dissipation film in the prior art, the heat diffusion value and the heat conductivity coefficient are much greater than those of the heat dissipation film in the prior art, the bending-resistant times are more than 250000, and the bending times of the heat dissipation film in the prior art are more than 100, which indicates that the bending-resistant composite heat dissipation film obtained by the method provided in the present invention has both heat dissipation performance and bending resistance.
2. The bending-resistant composite heat dissipation film obtained in example 1 of the present invention and the heat dissipation film obtained in the prior art were subjected to a 150 ° bending test, and the bending times and the heat conductivity coefficient were counted, and the results are shown in fig. 1.
As can be seen from the results of FIG. 1, the heat conduction coefficient of the prior art heat dissipation film is decreased from 1543W/mK to 1168W/mK after 100 times of bending, and is sharply decreased to 497W/mK after 500 times of bending; after 250000 times of bending, the heat conduction coefficient of the bending-resistant composite heat dissipation film obtained by the method is still 1192W/mK, and the heat dissipation performance loss is small, which fully shows that the heat dissipation film obtained by the method provided by the invention has good heat dissipation performance and bending resistance.
3. The bending-resistant composite heat dissipation film obtained In the embodiment 1 of the present invention is bent according to different bending diameters, i.e., different bending curvatures, and the In-plane thermal conductivity (In-plane thermal conductivity) of the bent composite heat dissipation film is measured. The results are shown in FIG. 2.
As can be seen from the results of fig. 2, after the bending test is performed on the bending-resistant composite heat dissipation film provided by the present invention with different bending diameters, the in-plane heat conduction coefficient loss is small, which indicates that the bending-resistant composite heat dissipation film obtained by the method provided by the present invention has high heat dissipation stability and high chemical stability.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A preparation method of a bending-resistant composite heat dissipation film is characterized by comprising the following steps;
(1) taking an oxidized graphite solution, firstly adding a heat dissipation filler, uniformly stirring, then adding an emulsifier, and stirring until the emulsifier is completely dissolved to obtain a first mixed solution;
the heat dissipation filling material comprises one or more of natural graphite, artificial graphite, mesophase carbon, mesophase pitch, mesophase carbon microspheres, single-walled carbon nanotubes, multi-walled carbon nanotubes, carbon fibers, graphene, activated carbon, carbon black, silicon carbide, diamond powder, silver palladium alloy, platinum, nickel, gold, aluminum, copper, silver, aluminum nitride, boron nitride, aluminum oxide, magnesium oxide, silicon dioxide and beryllium oxide;
(2) dissolving a high-molecular elastomer in a solvent to obtain an elastomer dissolved solution, adding the elastomer dissolved solution into the first mixed solution obtained in the step (1), and stirring at the temperature of 25-45 ℃ for 1-24 hours to obtain a second mixed solution;
(3) coating the second mixed liquid obtained in the step (2) into a film, and drying to obtain a dried heat dissipation film;
(4) calcining the dried heat dissipation film obtained in the step (3) for 1-4 h at 100-800 ℃ in an inert gas atmosphere, and then calendering to 70-90% of the thickness of the dried heat dissipation film to obtain a primary calendered heat dissipation film;
(5) carrying out reduction reaction on the initial calendering heat dissipation film obtained in the step (4) at 800-2000 ℃ for 1-24 h; obtaining a reduction heat dissipation film;
(6) and (4) rolling the reduced heat dissipation film obtained in the step (5) to 20-50% of the thickness of the dried heat dissipation film, and then calcining at 2000-3000 ℃ for 1-2 h to obtain the bending-resistant composite heat dissipation film.
2. The method for preparing a bend-resistant composite heat dissipation film according to claim 1, wherein in the step (1), the particle size of the heat dissipation filler is less than or equal to 100 μm.
3. The method for preparing a bending-resistant composite heat dissipation film according to claim 1, wherein in the step (1), the amount of the heat dissipation filler added is 0.01-15 wt% of the graphite oxide aqueous solution.
4. The method for preparing a bending-resistant composite heat dissipation film according to claim 1, wherein in the step (1), the emulsifier comprises an anionic surfactant, a nonionic surfactant or cellulose.
5. The method for preparing the bending-resistant composite heat dissipation film according to claim 1, wherein in the step (1), the addition amount of the emulsifier is 0.01-2 wt% of the aqueous solution of graphite oxide.
6. The method for preparing a bending-resistant composite heat dissipating film according to claim 1, wherein in the step (2), the polymer elastomer includes acrylonitrile-butadiene rubber, acrylonitrile-isoprene rubber, acrylonitrile-butadiene-isoprene rubber, styrene-butadiene rubber, chloroprene rubber, butadiene rubber, isoprene rubber, natural rubber, ethylene-propylene-diene rubber, butyl rubber, polyvinyl alcohol, styrene resin, acrylic resin, methacrylic resin, organic acid vinyl ester resin, vinyl ether resin, halogen-containing resin, olefin resin, alicyclic olefin resin, polycarbonate resin, polyester resin, polyamide resin, thermoplastic polyurethane resin, polysulfone resin, polyphenylene ether resin, polystyrene resin, or the like, One or more of cellulose derivatives and organic silicon resin.
7. The method for preparing a bending-resistant composite heat dissipation film according to claim 1, wherein in the step (2), the addition amount of the polymer elastomer is 0.01-10 wt% of the graphite oxide aqueous solution.
8. The method for preparing a bending-resistant composite heat dissipation film according to claim 1, wherein in the step (3), the coating pressure for pressure coating film formation is 1-4 kg/cm2。
9. The method for preparing a bending-resistant composite heat dissipation film according to claim 1, wherein in the step (3), the drying conditions are as follows: the temperature is 25-200 ℃, the humidity is 10-80%, and the time is 10-24 h.
10. The heat dissipating film obtained by the method for producing a bend-resistant composite heat dissipating film according to any one of claims 1 to 9.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113072726A (en) * | 2021-04-02 | 2021-07-06 | 信骅(上海)器材有限公司 | Graphene radiating fin and preparation process thereof |
| CN113179611A (en) * | 2021-03-15 | 2021-07-27 | 佛山市晟鹏科技有限公司 | Boron nitride heat dissipation film and preparation method and application thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5658829A (en) * | 1979-10-17 | 1981-05-22 | Matsushita Electric Ind Co Ltd | Preparation of graphite-resin composite thin plate |
| KR20120114837A (en) * | 2011-04-08 | 2012-10-17 | 한폴 주식회사 | Polymer modified graphite compositions, heat-radiation sheet and method for producing thereof |
| US20130189180A1 (en) * | 2007-05-17 | 2013-07-25 | Kaneka Corporation | Graphite Film and Graphite Composite Film |
| CN104592950A (en) * | 2014-12-26 | 2015-05-06 | 苏州格瑞丰纳米科技有限公司 | High-thermal conductivity graphite alkenyl polymer heat conducting film and preparation method thereof |
| CN105541328A (en) * | 2015-12-16 | 2016-05-04 | 无锡市惠诚石墨烯技术应用有限公司 | Graphene oxide based method for preparing highly oriented pyrolytic graphite film |
| CN105778136A (en) * | 2014-12-24 | 2016-07-20 | 中国科学院宁波材料技术与工程研究所 | Graphene composite pasting film |
| CN107840330A (en) * | 2017-10-18 | 2018-03-27 | 复旦大学 | A kind of preparation method of carbon/carbon composite radiating film |
| CN111699090A (en) * | 2018-02-14 | 2020-09-22 | 积水保力马科技株式会社 | Thermally conductive sheet |
-
2020
- 2020-11-18 CN CN202011296998.6A patent/CN112409997A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5658829A (en) * | 1979-10-17 | 1981-05-22 | Matsushita Electric Ind Co Ltd | Preparation of graphite-resin composite thin plate |
| US20130189180A1 (en) * | 2007-05-17 | 2013-07-25 | Kaneka Corporation | Graphite Film and Graphite Composite Film |
| KR20120114837A (en) * | 2011-04-08 | 2012-10-17 | 한폴 주식회사 | Polymer modified graphite compositions, heat-radiation sheet and method for producing thereof |
| CN105778136A (en) * | 2014-12-24 | 2016-07-20 | 中国科学院宁波材料技术与工程研究所 | Graphene composite pasting film |
| CN104592950A (en) * | 2014-12-26 | 2015-05-06 | 苏州格瑞丰纳米科技有限公司 | High-thermal conductivity graphite alkenyl polymer heat conducting film and preparation method thereof |
| CN105541328A (en) * | 2015-12-16 | 2016-05-04 | 无锡市惠诚石墨烯技术应用有限公司 | Graphene oxide based method for preparing highly oriented pyrolytic graphite film |
| CN107840330A (en) * | 2017-10-18 | 2018-03-27 | 复旦大学 | A kind of preparation method of carbon/carbon composite radiating film |
| CN111699090A (en) * | 2018-02-14 | 2020-09-22 | 积水保力马科技株式会社 | Thermally conductive sheet |
Non-Patent Citations (1)
| Title |
|---|
| 张旭东等: "原料特性和制备工艺对柔性石墨膜导热性能的影响", 《硅酸盐通报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113179611A (en) * | 2021-03-15 | 2021-07-27 | 佛山市晟鹏科技有限公司 | Boron nitride heat dissipation film and preparation method and application thereof |
| CN113179611B (en) * | 2021-03-15 | 2023-03-24 | 佛山市晟鹏科技有限公司 | Boron nitride heat dissipation film and preparation method and application thereof |
| CN113072726A (en) * | 2021-04-02 | 2021-07-06 | 信骅(上海)器材有限公司 | Graphene radiating fin and preparation process thereof |
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