WO2014175344A1 - Matériau de revêtement aqueux, élément dissipant la chaleur, pièce métallique et dispositif électronique - Google Patents

Matériau de revêtement aqueux, élément dissipant la chaleur, pièce métallique et dispositif électronique Download PDF

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Publication number
WO2014175344A1
WO2014175344A1 PCT/JP2014/061459 JP2014061459W WO2014175344A1 WO 2014175344 A1 WO2014175344 A1 WO 2014175344A1 JP 2014061459 W JP2014061459 W JP 2014061459W WO 2014175344 A1 WO2014175344 A1 WO 2014175344A1
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WIPO (PCT)
Prior art keywords
water
filler
based paint
polyurethane
heat
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PCT/JP2014/061459
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English (en)
Japanese (ja)
Inventor
雅子 日夏
武 藤原
Original Assignee
Jnc株式会社
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Publication date
Application filed by Jnc株式会社 filed Critical Jnc株式会社
Priority to CN201480023790.3A priority Critical patent/CN105143370A/zh
Priority to JP2015513809A priority patent/JP6365532B2/ja
Priority to KR1020157033606A priority patent/KR20160004341A/ko
Publication of WO2014175344A1 publication Critical patent/WO2014175344A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/02—Emulsion paints including aerosols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/14—Solid materials, e.g. powdery or granular

Definitions

  • the present invention relates to a water-based paint.
  • the present invention relates to a water-based paint capable of forming a film having heat dissipation properties.
  • a heat sink is known as a member that is attached to a mechanical / electrical part that generates heat and aims to lower the temperature by radiating heat.
  • heat sinks are mainly made of metal such as aluminum or copper, which easily conducts heat.
  • a method of anodizing the surface by anodizing is known as a method for further enhancing the heat dissipation effect.
  • alumite processing needs to change a bathtub for every process, such as a degreasing process, water washing, and an anodizing process.
  • many fine pores exist in the film obtained by the anodic oxidation treatment, and these fine pores cause cracks and corrosion. Therefore, a sealing treatment is required as a subsequent process.
  • anodizing has a problem that many processes are required and productivity is poor.
  • Patent Document 1 discloses an aqueous composition and a coating composition containing an alkali metal silicate and water and a specific metal compound as a liquid phase for the purpose of lowering the temperature by heat dissipation. It is disclosed. However, in addition to high heat dissipation and high productivity, a member for heat dissipation is required to have close contact with a heat source and heat resistance in order to improve heat transfer.
  • an object of the present invention is to provide a water-based paint that is easy to handle and can form a film excellent in heat dissipation, heat resistance, and adhesion.
  • an aqueous dispersion (dispersion liquid) containing polyurethane resin fine particles and orthorhombic silicate mineral can be an aqueous paint capable of forming a film having high heat dissipation properties.
  • the water-based paint according to the first aspect of the present invention includes polyurethane resin fine particles; a first filler formed of an orthorhombic silicate mineral that emits far infrared rays; the polyurethane resin fine particles and the first
  • the filler contains dispersed water.
  • the “silicate mineral” may be either natural or artificial, and includes aluminosilicate minerals and silicate compounds other than minerals. If comprised in this way, since it is a water-based paint, handling and conveyance of application
  • the water-based paint according to the second aspect of the present invention is the water-based paint according to the first aspect of the present invention, wherein the material constituting the polyurethane resin fine particles is polycarbonate polyurethane, polyester polyurethane, aliphatic polyurethane, fatty acid-modified polyurethane. , At least one selected from the group consisting of aromatic polyurethane and polyether polyurethane.
  • Polycarbonate polyurethane refers to a polyurethane resin having a polycarbonate skeleton in the main chain.
  • Polyyester polyurethane refers to a polyurethane resin having a polyester skeleton in the main chain.
  • “Aliphatic polyurethane” refers to a polyurethane resin having an aliphatic chain in the main chain.
  • “Fatty acid-modified polyurethane” refers to a polyurethane resin having a modified fatty acid skeleton in the main chain.
  • “Aromatic polyurethane” refers to a polyurethane resin having an aromatic group in the main chain.
  • Polyether polyurethane refers to a polyurethane resin having a polyether skeleton in the main chain. If comprised in this way, it will become the water-based coating material which can form the film
  • the water-based paint according to the third aspect of the present invention is the water-based paint according to the second aspect of the present invention, wherein at least one of the materials constituting the polyurethane resin fine particles is polycarbonate polyurethane or polyester polyurethane. If comprised in this way, it will become the water-based coating material which can form the film
  • the water-based paint according to the fourth aspect of the present invention is the water-based paint according to any one of the first to third aspects of the present invention, wherein the polyurethane resin fine particles have an average particle size of 10 to 500 nm.
  • the average particle diameter is 10 to 500 nm” is not limited to the primary particle diameter, and may be an aggregated particle diameter. With this configuration, the polyurethane resin fine particles can be easily dispersed in water.
  • the average particle size is based on particle size distribution measurement by a laser diffraction / scattering method. That is, when the powder is divided into two from a certain particle size by the wet method using the analysis based on the Franhofer diffraction theory and Mie's scattering theory, the larger side and the smaller side are equivalent (volume basis). Was the median diameter.
  • the water-based paint according to the fifth aspect of the present invention is the water-based paint according to any one of the first to fourth aspects of the present invention described above, wherein the polyurethane resin fine particles include the polyurethane resin fine particles and water.
  • the solid obtained by drying the dispersion liquid has a glass transition point of ⁇ 80 ° C. to ⁇ 20 ° C. If comprised in this way, the film
  • the water-based paint according to the sixth aspect of the present invention is the water-based paint according to any one of the first to fifth aspects of the present invention, wherein the orthorhombic silicate mineral is: Cordierite and / or mullite.
  • the orthorhombic silicate mineral is: Cordierite and / or mullite.
  • the water-based paint according to the seventh aspect of the present invention is the water-based paint according to any one of the first to sixth aspects of the present invention, wherein boron nitride, aluminum nitride, silicon carbide, silica, alumina And a second filler formed of at least one selected from the group consisting of zinc oxide, titanium oxide, titanium black and graphite. If comprised in this way, since the heat conductivity of the film
  • the water-based paint according to the eighth aspect of the present invention is the water-based paint according to the seventh aspect of the present invention, wherein the first filler and the second filler are added in an amount of 5 to 100 parts by weight based on 100 parts by weight of the polyurethane resin fine particles.
  • the second filler is 1 to 150 parts by weight with respect to 100 parts by weight of the first filler
  • the first filler and the second filler are powders, and have an average particle size Is 0.01 to 30 ⁇ m.
  • the “average particle diameter of 0.01 to 30 ⁇ m” is not limited to the primary particle diameter, and may be an aggregated particle diameter. If comprised in this way, since an average particle diameter is 0.01 micrometer or more, thermal conductivity does not worsen. Further, since the thickness is 30 ⁇ m or less, the surface of the formed film is not uneven, the coating liquid is easy to handle, and the adhesion to the substrate is not impaired.
  • the water-based paint according to the ninth aspect of the present invention is the water-based paint according to any one of the first to eighth aspects of the present invention, wherein the 5% mass loss temperature of the solid after drying is 270 ° C or higher. If comprised in this way, it will become the water-based paint which can form the film
  • the water-based paint according to the tenth aspect of the present invention is the antifoaming agent having foam breaking property or foam-suppressing property in the water-based paint according to any one of the first to ninth aspects of the present invention. including. If comprised in this way, the water-based coating material which has the effect of destroying the foam once produced
  • the heat dissipating member according to the eleventh aspect of the present invention is formed by drying after applying the water-based paint according to any one of the first to tenth aspects of the present invention. If comprised in this way, the film
  • a metal part according to a twelfth aspect of the present invention comprises: a metal part body; and after applying the water-based paint according to any one of the first to tenth aspects of the present invention to the metal part body, A film formed by drying is provided.
  • the “metal component body” may be a metal plate.
  • the “metal part body” may be a heat radiating member, or may be a part of the target product itself. If comprised in this way, the heat
  • the metal part according to a thirteenth aspect of the present invention is the metal part according to the twelfth aspect of the present invention, wherein the metal part main body is selected from the group consisting of copper, iron, magnesium, aluminum and alloys thereof. It is formed including at least one kind. If comprised in this way, since these metals have especially high thermal conductivity, they can improve the heat dissipation effect.
  • An electronic apparatus comprises: the metal component according to the twelfth aspect or the thirteenth aspect of the present invention; and an electronic device having a heat generating portion; The electronic device is disposed so as to be in contact with the heat generating portion.
  • the “heat generating part” refers to a part that transfers heat to a metal part. If comprised in this way, the heat which an electronic device has will be easily transmitted to a metal component, and will be emitted as far infrared rays.
  • the water-based paint of the present invention is easy to handle because it is water-based, and the film formed from this paint has high heat dissipation and is also excellent in heat resistance and adhesion.
  • FIG. 10 It is sectional drawing of the heat radiating member 14 which consists of the film
  • FIG. The film 10 includes a first filler 11 and a second filler 12. It is a flowchart which shows the preparation process (S01) of a water-based coating material, and the formation process (S02, S03) of a film
  • FIG. 1 is a schematic view of a motor 50 in which a heat radiation member 10 is formed on an outer surface 41 of a motor body 40.
  • 1 is a schematic view of a battery 70 in which a heat radiating member 10 is formed on the outer surface of a battery body 60.
  • the water-based paint according to the first embodiment of the present invention includes: polyurethane resin fine particles; a first filler formed of an orthorhombic silicate mineral that emits far infrared rays; Water containing dispersed particles and the first filler is included.
  • polyurethane resin dispersed particles examples include at least one particle selected from the group consisting of polycarbonate polyurethane, polyester polyurethane, aliphatic polyurethane, fatty acid-modified polyurethane, aromatic polyurethane, and polyether polyurethane.
  • Polyurethane is preferable because it is excellent in heat resistance and adhesion to metals, and the above polyurethane is particularly preferable because it can form a film excellent in heat resistance / adhesion.
  • polycarbonate polyurethane and / or polyester polyurethane is contained in the constituent elements of the polyurethane resin fine particles.
  • the average particle diameter of the polyurethane resin fine particles is preferably 10 to 500 nm. More preferably, it is 10 to 100 nm. When the average particle size is 10 nm or more, aggregation in water hardly occurs. Moreover, dispersion
  • the glass transition temperature of a solid obtained by drying a dispersion containing polyurethane resin fine particles and water is preferably ⁇ 80 to ⁇ 20 ° C. More preferably, it is ⁇ 55 to ⁇ 30 ° C.
  • the glass transition temperature is ⁇ 80 ° C. or higher, the coating film strength can be maintained, so that scratches are difficult to occur and the drying property is excellent.
  • the temperature is ⁇ 20 ° C. or lower, an effect of preventing cracks can be obtained due to appropriate flexibility. Note that the lower the glass transition temperature, the more preferable the film formed from the water-based paint because the adhesion with other substances (for example, metals) is improved.
  • orthorhombic silicate mineral examples include mullite, cordierite, enstatite, hemimorphite, zoisite, sillimanite, and columbite. These fillers are excellent in heat conduction and far-infrared radiation effects, and improve the heat dissipation of a film formed from an aqueous paint.
  • cordierite and mullite are preferable in that they have a high infrared emission effect, are lightweight and chemically stable, and have a high affinity with resins.
  • the orthorhombic silicate mineral may be either natural or artificial.
  • the water-based paint contains at least one of these fillers.
  • the crystal system of the silicate mineral used in the present invention is orthorhombic, but in the case of naturally occurring minerals, monoclinic and triclinic minerals, and even cubic minerals May be contained as an impurity.
  • mica, montmorillonite, graphite (including graphite), kaolin, bentonite, and the like may be included as minerals as long as the effects of the present invention are not significantly impaired.
  • the second filler may be added in the form of addition to the first filler.
  • the second filler is preferably at least one selected from the group consisting of boron nitride, aluminum nitride, silicon carbide, silica, alumina, zinc oxide, titanium oxide, titanium black and graphite.
  • boron nitride, alumina, and zinc oxide are preferable because they have high thermal conductivity and can further improve the heat dissipation effect of a film formed from an aqueous paint.
  • Silica is preferable because it can adjust the viscosity of the water-based paint and has an effect of preventing dripping.
  • Titanium oxide is preferably dispersed uniformly in the paint and can be colored white, and titanium black and graphite are preferred because they can be uniformly dispersed in the paint and colored in black to enhance the design. It is also possible to add a plurality of first fillers having different particle sizes instead of the second filler. At this time, the first filler may be the same filler or different.
  • the shape of the first filler and the second filler is preferably powder, paste, wire shape, or the like.
  • the average particle size is preferably 0.01 to 30 ⁇ m. More preferably, it is 0.05 to 25 ⁇ m. More preferably, it is 0.08 to 20 ⁇ m.
  • the viscosity of the water-based paint does not become too high, and the workability of the coating process is good. Further, the thermal conductivity is not deteriorated.
  • the thickness is 30 ⁇ m or less, the surface of the film formed from the water-based paint is not uneven. Also, the sedimentation of the filler is fast and the storage stability of the water-based paint does not deteriorate. Furthermore, it is preferable to make the average particle diameters of the first filler and the second filler larger than the average particle diameter of the polyurethane resin fine particles because the fillers easily come into contact with each other and the thermal conductivity is improved. In addition, when adding the second filler for coloring purposes, if particles having an average particle size smaller than that of the first filler are used, it is easy to disperse uniformly and does not hinder the contact between the first fillers. The conductivity is preferred without being impaired.
  • the total amount of the first filler and the second filler is 5 to 150 parts by weight with respect to 100 parts by weight of the polyurethane resin fine particles, a good heat dissipation effect can be obtained.
  • the total amount of the first filler and the second filler is preferably 10 to 120 parts by weight with respect to the polyurethane resin fine particles.
  • the heat dissipation characteristics of the filler can be sufficiently obtained.
  • the amount is 150 parts by weight or less, the viscosity of the paint does not increase so much that the operability is not impaired, and the problem that the filler aggregates in the aqueous paint does not occur.
  • the second filler is preferably mixed in an amount of 1 to 150 parts by weight with respect to 100 parts by weight of the first filler.
  • a dispersant / antifoaming agent / color pigment / silane coupling agent / surface conditioning agent may be further added to the water-based paint as an additive.
  • Dispersants include hydroxyl group-containing carboxylic acid esters, long chain polyaminoamide and high molecular weight acid ester salts, high molecular weight polycarboxylic acid salts, long chain polyaminoamide and polar acid ester salts, high molecular weight unsaturated acid esters, Molecular copolymer, modified urea, modified polyurethane, modified polyacrylate, polyether ester type anionic activator, naphthalene sulfonic acid formalin condensate salt, aromatic sulfonic acid formalin condensate salt, polyoxyethylene alkyl phosphate ester, poly Oxyethylene nonyl phenyl ether, polyoxylene monoalkyl ether, and stearylamine acetate are used.
  • Antifoaming agents include silicone-based antifoaming agent, modified silicone-based antifoaming agent, silica-based antifoaming agent, wax, polysiloxane, polyether-modified polydimethylsiloxane, foam-breaking polymer, paraffinic oil, foam-breaking fat Group derivatives and the like. Addition of 0.01 to 5 parts by weight with respect to 100 parts by weight of the water-based paint exhibits antifoaming properties and improves the workability of the water-based paint application process.
  • an antifoaming agent By adding an antifoaming agent, it is possible to obtain a water-based paint having the effect of destroying the foam once formed (bubble breaking) or suppressing the foam formation (foam suppression). ) Can be improved.
  • Organic pigments and inorganic pigments can be used as the color pigment. Inorganic pigments are preferred.
  • a commercially available coupling agent is used for the silane coupling agent. Among these, silane coupling agent Silaace (registered trademark) (S330, S510, S520, S530) manufactured by JNC Corporation is preferable. By adding 1 to 10 parts by weight with respect to 100 parts by weight of the polyurethane resin fine particles, the adhesion between the metal plate and the film formed from the water-based paint can be improved.
  • Examples of the surface conditioner include organic modified polysiloxane, alkyl modified polysiloxane, acrylic copolymer, surface active polymer, acrylic copolymer, silicon modified acrylic, alcohol alkoxylate and the like. Addition of 0.001 to 10 parts by weight with respect to 100 parts by weight of the water-based paint shows a leveling effect, improved wettability, slip properties, etc., and improves workability and film characteristics of the water-based paint application process.
  • the water-based paint is prepared by adding the powder of the first filler (and, if necessary, the second filler) to the water dispersion (dispersion liquid) containing the polyurethane resin fine particles. Stirring and defoaming is performed using a stirrer, and the mixture is mixed to such an extent that aggregation of filler is eliminated (FIG. 2, S01). For example, after stirring for 10 minutes at a rotational speed of 2000 rpm, defoaming is performed for 10 minutes at a rotational speed of 2200 rpm. During mixing, an additive such as a dispersant may be added as necessary, or a second filler may be added to adjust the viscosity of the water-based paint according to the coating method.
  • a dispersant may be added as necessary, or a second filler may be added to adjust the viscosity of the water-based paint according to the coating method.
  • the amount may be any amount that can disperse the polyurethane resin fine particles. For example, 40 weight parts or more can be mentioned with respect to 100 weight parts of polyurethane resin fine particles.
  • the water-based paint of the present application uses water as a solvent, it is easier to handle and transport as a paint than an organic solvent. Furthermore, it can also be a measure against VOC (Volatile Organic Compounds / volatile organic compounds).
  • the solvent of the water-based paint of the present invention is water, it can be used on a resin surface that is soluble in an organic solvent. The water-based paint of the present invention can easily form a film having heat dissipation properties by drying after application.
  • the heat radiating member according to the second embodiment of the present invention is a film made of the water-based paint according to the first embodiment of the present invention.
  • membrane as the heat radiating member 10 as shown in FIG. 1 can be easily obtained by making it dry after apply
  • a wet coating method for uniformly coating the water-based paint As the method for applying the water-based paint (FIG. 2, S02), it is preferable to use a wet coating method for uniformly coating the water-based paint.
  • a spin coating method that allows simple and homogeneous film formation is preferable when a small amount is prepared.
  • gravure coating, die coating, bar coating, reverse coating, roll coating, slit coating, dipping, spray coating, kiss coating, reverse kiss coating, air knife coating Method, curtain coating method, rod coating method and the like are preferable.
  • the wet coating method can be appropriately selected according to the required film thickness, viscosity, drying conditions and the like from these methods.
  • the film thickness after drying is 0.1 to 1000 ⁇ m. More preferably, it is 10 to 100 ⁇ m, and further preferably 20 to 50 ⁇ m. If the thickness is 10 ⁇ m or more, the emissivity increases as the thickness increases, and the heat dissipation effect increases. When it is 100 ⁇ m or less, the heat transfer coefficient increases as the thickness decreases. Therefore, an appropriate film thickness is selected according to the application.
  • the coating film is dried to remove moisture, and the aqueous paint is solidified to form a film (FIG. 3, S03). Drying may be natural drying at room temperature, hot air blowing from a dryer or the like, or heat drying by a machine such as a drying furnace. Drying requires that water be removed to such an extent that the aqueous paint loses fluidity.
  • the formed film contains an orthorhombic silicate mineral having high thermal conductivity and high thermal radiation. Therefore, when a film is formed on a metal having a high thermal conductivity such as that used for a heat sink, the heat radiation from the metal surface can be increased and the temperature of the metal itself can be lowered. A metal such as a heat sink can move the internal heat sufficiently, but if the heat transfer coefficient with the adjacent material is low, it becomes difficult to transfer the heat to the material (for example, air). Therefore, by applying the water-based paint of the present application having high thermal radiation, it is possible to radiate far infrared rays into the atmosphere or the like and efficiently release heat. Further, the membrane includes a polyurethane resin. Therefore, it is excellent in heat resistance and the mass loss temperature of 5% is 270 ° C. or higher. Furthermore, it has excellent adhesion to the metal surface. Moreover, since it is excellent in ductility, processing after painting is also possible.
  • membrane formed from the water-based coating material of this application functions as a heat radiating member.
  • a film is formed on a metal or a nonmetal having a lower emissivity than the film, the heat of the metal or the nonmetal is sucked up, converted into far infrared rays, and radiated to the outside to lower the temperature.
  • the water-based paint of the present application may be applied on the metal component main body and dried to form a metal component having a heat-radiating film.
  • the metal to be applied include copper, iron, magnesium, aluminum, and alloys thereof. These metals are particularly preferable because of their high thermal conductivity.
  • the metal component main body may be a metal plate 13 having a high thermal conductivity.
  • the heat dissipation member 14 having the metal plate can be formed.
  • the thickness of the metal plate of the heat radiating member 14 is 0.03 to 100 mm, preferably 0.1 to 10 mm, and more preferably 0.2 to 2 mm.
  • the heat source is small and the area of the metal plate is sufficiently large, the thicker the heat dissipation effect is. If it is 0.03 mm or more, the heat dissipation effect is excellent.
  • FIG. 3 is a schematic cross-sectional view of an electronic component 30 as an electronic device in which the heat dissipation member 14 is placed so that the metal plate 13 of the heat dissipation member 14 is in contact with the sealing body 26 of the electronic device 20.
  • the heat dissipation member 14 is placed on the upper surface of the electronic device 20 and functions. That is, the heat radiating member 14 is placed on the surface of the sealing body 26 and removes heat from the electronic device 20 by releasing heat transmitted from the sealing body 26 to the outside.
  • the thickness of the metal plate 13 is 0.01 to 100 mm.
  • the thickness is preferably 0.03 to 10 mm, more preferably 0.1 to 2 mm.
  • the thickness of the film 10 of the heat radiating member 14 is 0.1 to 1000 ⁇ m.
  • the thickness is preferably 10 to 100 ⁇ m, more preferably 20 to 50 ⁇ m.
  • a certain amount of thickness is preferable because the heat radiating effect is enhanced.
  • the heat dissipating member 14 covering the entire sealing body 26 can more efficiently release the heat transferred from the inside of the electronic device to the sealing body 26 to the outside.
  • the heat dissipation member 14 is bonded to the electronic device 20 using an adhesive.
  • the adhesive is preferably an acrylic, silicon, or epoxy adhesive.
  • the heat radiating member 14 may be fixed to the electronic device 20 by using screws or metal fittings.
  • any metal plate 13 provided in the heat dissipation member 14 may be used as long as it can be fixed to the electronic device 20 in close contact.
  • FIG. 3 is a usage example of the heat dissipation member 14 in which the film 10 is formed on the flat metal plate 13.
  • the shapes of the metal plate 13 and the film 10 are not limited to this, and the area in contact with the outside air may be increased as a shape having a larger surface area.
  • the metal component main body may be an existing metal heat dissipation member such as the heat sink 13.
  • the performance of the heat sink 13 can be improved (the film 10 is not shown).
  • the metal plate is applied to the aqueous paint adjusted to an appropriate concentration by using an aqueous paint adjusted to have a low viscosity. Paint by dipping method.
  • the metal part body itself may be part of the product.
  • the metal component main body may be the outer surface of the electric vehicle motor 50.
  • FIG. 5 is a schematic diagram of a motor 50 for an electric vehicle in which a film 10 as a heat radiating member is disposed on the outer surface 41 of the motor body 40 by directly applying and drying the aqueous paint of the present application.
  • the motor body 40 that converts electrical energy into mechanical energy generates heat during operation, and it is necessary to discharge this heat to the outside of the motor.
  • the film 10 functions by being formed on the outer surface 41 of the motor body 40.
  • the film 10 sucks up the heat transmitted from the outer surface 41 of the motor body 40, the heat is transmitted into the film, and further radiated into the outside air as far infrared rays, thereby generating heat generated in the motor body 40. Dissipate heat.
  • the water-based paint may be applied not only to the outer surface of the motor 50 but also to the inner surface. If it does in this way, the film
  • the metal component main body may be a metal plate, and the heat radiating member 14 (see FIG. 1) having the metal plate may be placed on the outer surface of the motor main body 40.
  • the thickness of the metal plate provided in the heat radiating member 14 is usually 0.01 to 100 mm.
  • the thickness is preferably 0.03 to 10 mm, more preferably 0.1 to 2 mm.
  • the film thickness of the heat dissipating member 14 is normally 0.1 to 1000 ⁇ m.
  • the thickness is preferably 10 to 100 ⁇ m, more preferably 20 to 50 ⁇ m.
  • the motor of an electric vehicle Since the motor of an electric vehicle has a large output and is always rotated during traveling, the motor generates a large amount of heat and is efficiently removed by the heat dissipating member of the present application.
  • the heat radiating member of this application is not restricted to the motor for electric vehicles, The use to a general motor is also possible.
  • the use of the heat dissipating member of the present application is effective when it is desired to make the motor light and small.
  • the metal part body itself may be part of the product.
  • the metal component main body may be an outer surface of an electric vehicle battery 70 that starts an engine and operates electrical components normally.
  • FIG. 6 is a schematic view of a battery 70 in which a film 10 as a heat radiating member is disposed on the outer surface of the battery body 60 by directly applying and drying the aqueous paint of the present application.
  • the battery main body 60 in which self-heating at the time of charging or discharging becomes a problem needs to discharge the heat to the outside of the battery main body.
  • the film 10 functions by being formed on the outer surface of the battery body 60.
  • the film 10 sucks up heat transferred from the surface of the battery body 60, and the heat is transferred into the film and further radiated to the outside air as far infrared rays, thereby radiating the heat generated in the battery body 60.
  • the water-based paint may be applied not only to the outer surface of the battery 70 but also to the inner surface. If it does in this way, the film
  • the battery body 60 may be a battery cell or an assembly thereof.
  • the battery body 60 may be, for example, an electric vehicle battery that starts an engine and operates electrical components normally.
  • the metal component main body may be a metal plate, and the heat dissipation member 14 (see FIG. 1) having the metal plate may be placed on the outer surface of the battery main body 60.
  • the thickness of the metal plate provided in the heat radiating member 14 is usually 0.01 to 100 mm.
  • the thickness is preferably 0.03 to 10 mm, more preferably 0.1 to 2 mm.
  • the film thickness of the heat dissipating member 14 is normally 0.1 to 1000 ⁇ m.
  • the thickness is preferably 10 to 100 ⁇ m, more preferably 20 to 50 ⁇ m.
  • the heat radiating member of this application is not restricted to the battery for electric vehicles, You may use for the battery from which the self-heating at the time of charge or discharge becomes a problem.
  • heat radiating members 10 and 14 can also be used for articles such as CPUs and batteries of devices such as smartphones and PCs, batteries, lighting fixtures, machine tools and other self-heating devices, and machines, and provide a high heat dissipation effect.
  • the heat dissipating member of the present invention has a high heat dissipating effect by a film obtained by drying an aqueous dispersion containing polyurethane resin fine particles and a filler, or by a combination of a film and a metal plate. Moreover, since the heat radiating member and the article can be manufactured by division of labor and the heat radiating member can be easily placed on the article, the manufacturing is easy and the production efficiency can be increased.
  • the component material which comprises the heat radiating member used for the Example of this invention is as follows. ⁇ Aqueous polyurethane resin dispersion liquid> ⁇ Polyester-polyurethane resin dispersion liquid: PESU1: Sumika Bayer Urethane Co., Ltd. (trade name) Bihydrol UH2342 (containing 1% by weight of 1-methyl-2-pyrrolidone) PESU2: Sumika Bayer Urethane Co., Ltd. (trade name) Bihydrol UH650 ⁇ Polycarbonate-polyurethane resin dispersion liquid: PCU1: Sumika Bayer Urethane Co., Ltd.
  • the average particle diameter (median diameter) of each particle was measured using a laser diffraction scattering type particle size distribution measuring apparatus LA-950V2 manufactured by Horiba. That is, using the analysis based on the Franchoffer diffraction theory and Mie's scattering theory, when measuring by a wet method and dividing the powder into two from a certain particle size, the larger side and the smaller side are equivalent (volume basis) ) Is the median diameter.
  • the measurement was performed using a wet method, a solution in which a sample was dispersed after adding a small amount of a measurement sample (about one earpick) in pure water and then treating in an ultrasonic cleaner for 3 minutes. The concentration of the slurry at the time of measurement was adjusted so that the laser transmittance was 80%.
  • Example preparation> Using an autorotation / revolution mixer (Shinky Awatori Rentaro ARE250), the aqueous polyurethane resin dispersion liquid and filler powder were stirred for 10 minutes at a rotational speed of 2000 rpm, and then defoamed for 10 minutes at a rotational speed of 2200 rpm. As a result, the following samples were prepared.
  • Example 1 100 parts by weight and 15 parts by weight of PESU1 and synthetic cordierite (SS-1000) with an average particle size of 1.7 ⁇ m were weighed, put into a polypropylene container, and mixed by a rotating / revolving mixer. The sample of Example 1 was obtained.
  • Example 2 >> 100 parts by weight and 21.4 parts by weight of PESU2 and synthetic cordierite (SS-1000) with an average particle size of 1.7 ⁇ m were weighed and placed in a polypropylene container, and mixed with a rotating / revolving mixer. A sample of Example 2 was obtained.
  • Examples 3 to 5 Samples of Examples 3 to 5 were prepared in the same manner as in Example 1 except that the type of the aqueous polyurethane resin dispersion liquid was different.
  • ⁇ Comparative example 1 Acrylic resin (water-based) paint and synthetic cordierite (SS-1000) with an average particle size of 1.7 ⁇ m are weighed in 100 parts by weight and 15 parts by weight, respectively, and placed in a polypropylene container. The sample of Comparative Example 1 was mixed.
  • ⁇ Comparative example 2 100 parts by weight and 42.9 parts by weight of acrylic resin (thermosetting) and synthetic cordierite (SS-1000) with an average particle size of 1.7 ⁇ m were weighed and placed in a polypropylene container.
  • Comparative Example 3 100 parts by weight and 15.9 parts by weight of alkyd resin paint (oil-based) and synthetic cordierite (SS-1000) with an average particle size of 1.7 ⁇ m are weighed and put into a polypropylene container.
  • the sample of Comparative Example 3 was prepared by mixing with a mixer.
  • ⁇ Comparative Example 4 Epoxy resin (photocurable), synthetic cordierite (SS-200) having an average particle diameter of 7.5 ⁇ m, methyl ethyl ketone (MEK), and CPI-210S were respectively 70 parts by weight, 30 parts by weight, 30 parts by weight, 0 parts.
  • Example 6 100 parts by weight and 35 parts by weight of PECU 1 and synthetic cordierite (SS-1000) with an average particle diameter of 1.7 ⁇ m were weighed, put into a polypropylene container, and mixed by a rotating / revolving mixer. The sample of Example 6 was obtained.
  • Comparative Examples 5 and 6 Samples of Comparative Examples 5 and 6 were used in the same manner as in Example 6 except that the type of filler was different.
  • Comparative Example 7 >> Only PECU1 was used as a sample. «Comparative Example 8» Only black alumite treatment was used (in the following [1.
  • Examples 7 to 27 Furthermore, in order to adjust the color and enhance the heat dissipation effect, an average particle size of 7.5 ⁇ m cordierite (SS-200) and a second filler were added as the first filler. The ratio of the addition amount of the aqueous polyurethane resin dispersion and the filler is shown below.
  • the sample preparation procedure is the same as in Example 6.
  • cordierite having a particle size different from that of the first filler is used in combination, and the second filler is not included. Cordierite with different particle diameters is described in the filler column.
  • the heat radiating member according to Comparative Example 2 is a heat radiating member having an aluminum plate prepared by applying the prepared sample by spin coating on an aluminum plate having a thickness of 40 ⁇ 40 mm and a thickness of 0.4 mm, followed by curing with a 190 ° hot plate. Formed.
  • the heat radiating member according to Comparative Example 4 was prepared by applying the prepared sample to an aluminum plate having a thickness of 40 mm ⁇ 40 mm by spin coating, followed by curing with an ultraviolet irradiator to form a heat radiating member having an aluminum plate. did.
  • the heat dissipating member according to Comparative Example 7 is one in which only PECU 1 is applied to an aluminum plate and then dried.
  • the heat radiating member according to Comparative Example 8 does not have a resin and is obtained by performing black alumite treatment on one side of an aluminum plate.
  • the heat dissipating member to which this transistor is attached is left in the center of a thermostatic chamber set at 40 ° C., and after confirming that the temperature of the transistor has become constant at 40 ° C., a 1.18 V voltage is applied to the transistor using a DC stabilized power supply. Was applied, and the temperature change of the transistor surface was measured.
  • Heat radiating members were prepared using the samples of Examples 1 to 5 and Comparative Examples 1 to 4, and their heat radiating characteristics were evaluated. The evaluation results are shown below.
  • the type of resin is particularly preferably polycarbonate-polyurethane, polyester-polyurethane, or polyester-polycarbonate-polyurethane.
  • the heat dissipating member attached with this heater is placed in the center of a thermostatic chamber set at 40 ° C., and after confirming that the temperature of the ceramic heater is constant at 40 ° C., the ceramic heater is 14V using a DC stabilized power supply. Was applied, and the temperature change of the ceramic heater surface was measured. Since the ceramic heater generates a certain amount of heat, the higher the heat dissipation effect of the attached heat dissipation member, the lower the temperature of the ceramic heater. That is, it can be said that the heat dissipation member having a lower temperature of the ceramic heater has a higher heat dissipation effect.
  • Heat radiating members were prepared using the samples of Examples 6 to 27 and Comparative Examples 5 to 11, and their heat radiating characteristics were evaluated. The evaluation results are shown below.
  • the heat dissipating member using the water-based paint of the present invention has an excellent heat dissipating property. From the results shown in Table 9, the heat dissipating member using the water-based paint of the present invention does not impair the heat dissipating performance even when the second filler is added.
  • boron nitride and alumina have high thermal conductivity. This is preferable because the heat dissipation effect of the film formed from the aqueous paint can be further improved.
  • Titanium oxide is preferable because it can be uniformly dispersed in the coating and the coating can be colored white. Titanium black is preferable because it can be uniformly dispersed in the coating and the coating can be colored black.
  • the coating film made of the aqueous paint of the present invention has excellent heat resistance. For this reason, use in a higher temperature range is possible. Further, when Example 1 containing a co-solvent is compared with Examples 2 to 5 not containing a co-solvent, those containing no co-solvent are preferable. Examples 2 to 5 and Comparative Examples 1, 3 and 4 are In comparison, Examples 2-5 are preferred, with the polyester-polyurethane of Example 2, the polycarbonate-polyurethane of Example 3 or the polyester-polycarbonate-polyurethane of Examples 4 and 5 being particularly preferred. In addition, the thermosetting acrylic paint cured film (Comparative Example 2) has excellent heat resistance, but is not preferable because the volumetric shrinkage due to heating is large and cracks are removed from the substrate.
  • the coating film made of the water-based paint of the present invention has very excellent bending resistance in any of Examples 2 to 4. For this reason, it is possible to perform punching or bending after coating on the substrate.
  • the polycarbonate-polyurethane of Example 3 and the polyester-polycarbonate-polyurethane of Example 4 have excellent scratch hardness despite having flexibility. For this reason, it is hard to be damaged.
  • the coating film made of the water-based paint of the present invention is excellent as an exterior paint since the scratches once alleviated and the scratches are not noticeable.
  • a thermosetting acrylic paint cured film (comparative example 2), although scratch hardness is excellent, since adhesiveness with a base material is weak and peels off from a base material, it is unpreferable.
  • Example 28 >> PESU2, PECU1, and synthetic cordierite (SS-1000) with an average particle size of 1.7 ⁇ m were weighed in 75 parts by weight, 25 parts by weight, and 19.8 parts by weight, respectively, and placed in a polypropylene container for rotation. -It mixed with the revolution mixer and it was set as the sample of Example 28.
  • Examples 29 to 33 >> Samples of Examples 29 to 33 were prepared in the same manner as in Example 28 except that the type of the aqueous polyurethane resin dispersion liquid and the mixing ratio of the aqueous polyurethane resin dispersion liquid and the filler were different.
  • the coating film made of the aqueous paint of the present invention has high heat resistance. For this reason, use in a higher temperature range is possible.
  • Examples 28 to 33 show that the heat resistance can be improved by adding the polyester-polyurethane.
  • the coating film made of the aqueous paint of the present invention is excellent in adhesion. Further, it is preferable to add 25% or more of polycarbonate-polyurethane having a low glass transition point and good adhesion to the coating material because the adhesion between the substrate and the coating film is further improved. By mixing the polyurethane resin fine particles, the characteristics of each polyurethane coating film can be expressed.
  • the coating film made of the water-based paint of the present invention has very excellent bending resistance in any of Examples 28 to 33. For this reason, it is possible to perform punching or bending after coating on the substrate.
  • the coating film made of the water-based paint of the present invention has excellent scratch hardness despite having excellent bending resistance. For this reason, it is hard to be damaged. Further, it is preferable to add 50% or more of polycarbonate-polyurethane because scratch hardness is further improved and scratches are hardly formed. In addition, the coating film made of the water-based paint of the present invention is excellent as an exterior paint since the scratches once alleviated and the scratches are not noticeable.
  • Example 34 100 parts by weight, 15 parts by weight, and 1.72 parts by weight of PECU 1, synthetic cordierite (SS-1000) having an average particle diameter of 1.7 ⁇ m, and ANTI-TERRA-250 were respectively measured, and a container made of polypropylene. And mixed with a rotation / revolution mixer to obtain a sample of Example 34.
  • Examples 35 to 40 Samples of Examples 35 to 40 were prepared in the same manner as in Example 34 except that the types and amounts of additives were different.
  • ANTI-TERRA-250 was a rheology control agent, and the sedimentation rate of the filler could be reduced, but the filler could not be redispersed by shaking. From this, it is considered that ANTI-TERRA-250 can reduce the sedimentation rate of the filler when used in combination with other dispersants.
  • DISPERBYK-191 and DISPERBYK-2012 were able to reduce the amount of filler that settled, but took some time to disperse by shaking. From this, it was found that dispersion was possible up to a filler having a relatively large particle size. With DISPERBYK-199, the amount of filler that settled was almost the same as that without additive, but the filler was easily dispersed by shaking.
  • Example 40 (see Table 19), which was an embodiment in which an antifoaming agent was added, was produced in order to give a further adhesion effect to the aluminum plate. .
  • the defoaming effect is higher than in Example 4, and the adhesion (film forming property of the coating film) is further excellent. That is, when the filler is precipitated in the water-based paint, it is effective to add an antifoaming agent when it is necessary to disperse the filler again by shaking and stirring the paint. The test was conducted as follows.
  • Example 40 and Example 4 30 g of the sample of Example 40 and Example 4 was packed in a 50 ml glass sample bottle, shaken for 3 minutes by shaking the glass sample bottle up and down by hand, and left for 10 minutes immediately after the end of shaking to check for the presence of bubbles. confirmed.
  • 30 ⁇ m of a coating material that was allowed to stand for 10 minutes after shaking on an aluminum plate having a thickness of 0.4 mm was formed, and the appearance of unevenness in the coating film was observed.
  • the paint to which BYK-1710 of Example 40 was added no macro bubbles were generated after shaking, and it was confirmed that all the micro bubbles generated slightly disappeared after 10 minutes.
  • thermocouple ST-50 manufactured by Rika Kogyo Co., Ltd.
  • ST-50 manufactured by Rika Kogyo Co., Ltd.
  • the heat dissipating member to which this transistor is attached is left in the center of a thermostatic chamber set at 40 ° C., and after confirming that the temperature of the transistor has become constant at 40 ° C., a 1.18 V voltage is applied to the transistor using a DC stabilized power supply. Was applied, and the temperature change of the transistor surface was measured. The evaluation results are shown below.
  • the heat dissipating member using the water-based paint of Example 40 of the present invention has substantially the same heat dissipating property as that of Example 4. From this, it can be seen that the antifoaming agent does not adversely affect the heat dissipation characteristics. Rather, it is possible to avoid such risks by adding defoaming agents, as bubbles may be formed in the coating film or unevenness may occur in the coating film due to bubbles, which may adversely affect the heat dissipation characteristics. can do.

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Abstract

Selon la présente invention, un matériau de revêtement aqueux peut être produit, qui est facile à manipuler et permettant la formation d'un film ayant d'excellentes propriétés de dissipation de la chaleur, résistance à la chaleur et adhérence. Le matériau de revêtement aqueux selon la présente invention comprend : des microparticules de résine de polyuréthane ; une première charge comprenant un minéral silicate orthorhombique capable d'émettre un rayon dans l'infrarouge lointain ; et de l'eau dans laquelle sont dispersées les microparticules de résine polyuréthane et la première charge.
PCT/JP2014/061459 2013-04-26 2014-04-23 Matériau de revêtement aqueux, élément dissipant la chaleur, pièce métallique et dispositif électronique WO2014175344A1 (fr)

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CN201480023790.3A CN105143370A (zh) 2013-04-26 2014-04-23 水性涂料、散热构件、金属组件、电子装置
JP2015513809A JP6365532B2 (ja) 2013-04-26 2014-04-23 水性塗料、放熱部材、金属部品、電子機器
KR1020157033606A KR20160004341A (ko) 2013-04-26 2014-04-23 수성 도료, 방열 부재, 금속 부품 및 전자 기기

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JP2014227530A (ja) * 2013-05-27 2014-12-08 イズミ物産株式会社 温度抑制塗料組成物
JP2017128674A (ja) * 2016-01-21 2017-07-27 たまき 野間 放熱塗料
JP2017137442A (ja) * 2016-02-04 2017-08-10 株式会社リンレイ 床用艶出し剤
US9859190B2 (en) 2016-02-24 2018-01-02 Panasonic Intellectual Property Management Co., Ltd. Resin structure, and electronic component and electronic device using the structure

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CN106118419A (zh) * 2016-06-29 2016-11-16 海信集团有限公司 一种涂料及其制备方法和元器件
CN106587965B (zh) * 2016-12-06 2019-12-06 武汉钢铁有限公司 适用于金属基材的低温烧结高导热陶瓷涂料及其制备方法和应用
CN114142416B (zh) * 2021-12-07 2024-01-12 广西电网有限责任公司柳州供电局 一种新型防跑线装置的改造方法
KR102564781B1 (ko) * 2023-04-21 2023-08-07 홍정애 흑연 조성물이 코팅된 통전부재

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JP2017128674A (ja) * 2016-01-21 2017-07-27 たまき 野間 放熱塗料
JP2017137442A (ja) * 2016-02-04 2017-08-10 株式会社リンレイ 床用艶出し剤
US9859190B2 (en) 2016-02-24 2018-01-02 Panasonic Intellectual Property Management Co., Ltd. Resin structure, and electronic component and electronic device using the structure

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