WO2022191238A1 - 熱伝導性樹脂組成物及び熱伝導性樹脂材料 - Google Patents
熱伝導性樹脂組成物及び熱伝導性樹脂材料 Download PDFInfo
- Publication number
- WO2022191238A1 WO2022191238A1 PCT/JP2022/010288 JP2022010288W WO2022191238A1 WO 2022191238 A1 WO2022191238 A1 WO 2022191238A1 JP 2022010288 W JP2022010288 W JP 2022010288W WO 2022191238 A1 WO2022191238 A1 WO 2022191238A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resin
- thermally conductive
- phase
- resin phase
- conductive filler
- Prior art date
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 265
- 239000011347 resin Substances 0.000 title claims abstract description 265
- 239000011342 resin composition Substances 0.000 title claims abstract description 57
- 239000000463 material Substances 0.000 title claims description 43
- 239000011231 conductive filler Substances 0.000 claims abstract description 95
- 239000002245 particle Substances 0.000 claims abstract description 57
- 239000012071 phase Substances 0.000 claims description 158
- 239000007790 solid phase Substances 0.000 claims description 12
- 229920001187 thermosetting polymer Polymers 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 229920005992 thermoplastic resin Polymers 0.000 claims description 6
- 239000004695 Polyether sulfone Substances 0.000 claims description 4
- 229920006393 polyether sulfone Polymers 0.000 claims description 4
- 239000000945 filler Substances 0.000 description 10
- 238000005191 phase separation Methods 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 8
- 238000003825 pressing Methods 0.000 description 7
- 229920002379 silicone rubber Polymers 0.000 description 7
- 239000004945 silicone rubber Substances 0.000 description 7
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000011256 inorganic filler Substances 0.000 description 4
- 229910003475 inorganic filler Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 235000013339 cereals Nutrition 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 229910052596 spinel Inorganic materials 0.000 description 3
- 239000011029 spinel Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- YBRVSVVVWCFQMG-UHFFFAOYSA-N 4,4'-diaminodiphenylmethane Chemical compound C1=CC(N)=CC=C1CC1=CC=C(N)C=C1 YBRVSVVVWCFQMG-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 229920004695 VICTREX™ PEEK Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002296 dynamic light scattering Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000004850 liquid epoxy resins (LERs) Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/12—Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/06—Polysulfones; Polyethersulfones
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/02—Heterophasic composition
Definitions
- the present disclosure relates to thermally conductive resin compositions and thermally conductive resin materials. More particularly, it relates to a thermally conductive resin composition and a thermally conductive resin material containing a thermally conductive filler.
- Patent Document 1 describes a thermally conductive silicone rubber composition.
- a thermally conductive inorganic filler surface-treated with a specific silane coupling agent is dispersed in silicone rubber.
- the silicone rubber is highly filled with a thermally conductive inorganic filler (increased filling amount).
- a thermally conductive inorganic filler in order to improve the thermal conductivity of a thermally conductive silicone rubber composition and its moldings, the silicone rubber is highly filled with a thermally conductive inorganic filler (increased filling amount).
- the thermally conductive inorganic filler is highly filled, the viscosity of the thermally conductive silicone rubber composition tends to increase, making it difficult to apply the thermally conductive silicone rubber composition and to form a molded article having a desired thickness. There was a problem.
- An object of the present disclosure is to provide a thermally conductive resin composition and a thermally conductive resin material that can improve thermal conductivity while suppressing an increase in viscosity.
- a thermally conductive resin composition according to one aspect of the present disclosure includes a first resin phase, a second resin phase, and a thermally conductive filler.
- the first resin phase and the second resin phase are phase-separated.
- the density of the thermally conductive filler in the first resin phase is higher than the density of the thermally conductive filler in the second resin phase.
- a thermally conductive resin material according to one aspect of the present disclosure is a solidified product of the thermally conductive resin composition.
- the solid phase of the first resin phase, the solid phase of the second resin phase, and the thermally conductive filler are included.
- FIG. 1A is a model diagram showing an example of a phase separation structure between a first resin phase and a second resin phase.
- FIG. 1B is a model diagram showing an example of a dispersion structure of a thermally conductive filler in a first resin phase and a second resin phase.
- FIG. 2A is a model diagram showing another example of the phase separation structure between the first resin phase and the second resin phase.
- FIG. 2B is a model diagram showing another example of the dispersion structure of the thermally conductive filler in the first resin phase and the second resin phase.
- FIG. 3A is a model diagram showing another example of the phase separation structure between the first resin phase and the second resin phase.
- FIG. 3B is a model diagram showing another example of the dispersion structure of the thermally conductive filler in the first resin phase and the second resin phase.
- a thermally conductive resin composition according to the present embodiment includes a first resin phase, a second resin phase, and a thermally conductive filler.
- the first resin phase and the second resin phase are phase-separated to form a multiphase system.
- the density of the thermally conductive fillers in the first resin phase is higher than the density of the thermally conductive fillers in the second resin phase. That is, the amount of thermally conductive filler particles contained in the first resin phase per unit volume is greater than the amount of thermally conductive filler particles contained in the second resin phase per unit volume.
- the thermally conductive filler is evenly dispersed in both the first resin phase and the second resin phase.
- the thermally conductive filler is more unevenly distributed in the first resin phase than in the second resin phase (in the case of the thermally conductive resin composition of the present embodiment). particles are more likely to come into contact with each other. Therefore, the thermally conductive resin composition of the present embodiment can improve the thermal conductivity even when the amount of the thermally conductive filler to be filled is small.
- the thermally conductive resin composition of the present embodiment contains a small amount of thermally conductive filler, an increase in viscosity can be suppressed.
- the thermally conductive resin material according to this embodiment is a solidified product of the thermally conductive resin composition according to this embodiment, and includes a solid phase of the first resin phase, a solid phase of the second resin phase, and a thermally conductive contains fillers and
- a thermally conductive resin material of the present embodiment as in the case of the thermally conductive resin composition, more thermally conductive filler is unevenly distributed in the first resin phase than in the second resin phase. is dispersed evenly in both the first resin phase and the second resin phase. Therefore, the thermally conductive resin material of the present embodiment can improve the thermal conductivity even with a small amount of the thermally conductive filler.
- the thermally conductive resin composition according to this embodiment includes a first resin phase, a second resin phase, and thermally conductive fillers 3 .
- the first resin phase 1 and the second resin phase 2 have a phase separation structure. That is, the first resin phase 1 and the second resin phase 2 have low compatibility and are in a separated state.
- FIG. 1A shows a sea-island structure of a first resin phase 1 and a second resin phase 2.
- FIG. That is, it shows a structure in which a plurality of second resin phases 2 are scattered in the first resin phase 1 .
- FIG. 2A shows the interconnection structure of the first resin phase 1 and the second resin phase 2 . That is, it shows a structure in which the first resin phase 1 and the second resin phase 2 are interconnected in an intricate manner.
- FIG. 3A shows the layered structure of the first resin phase 1 and the second resin phase 2.
- the first resin phase 1 is composed of the first resin.
- the first resin has fluidity and is a liquid or paste resin.
- the second resin phase 2 is composed of a second resin.
- the second resin has fluidity and is a liquid or paste resin.
- the first resin and the second resin are different types of resin. That is, the solubility parameter (SP value) of the first resin and the solubility parameter of the second resin are different.
- the difference between the solubility parameter of the first resin and the solubility parameter of the second resin is preferably 1 or more.
- the compatibility between the first resin and the second resin is low, and the first resin phase 1 and the It becomes easy to form a phase separation structure with the second resin phase 2 . Since it is preferable that the difference between the solubility parameter of the first resin and the solubility parameter of the second resin is large, the upper limit is not particularly set.
- thermosetting resin is used as the first resin.
- the thermosetting resin is uncured, and for example, an uncured liquid epoxy resin is used.
- epoxy resins include bisphenol A type epoxy resins.
- a thermoplastic resin is used as the second resin.
- the thermoplastic resin is in a liquid state such as by melting, and examples thereof include polyethersulfone, silicone resin, acrylic resin, and urethane resin. Among these, it is preferable to use polyether sulfone, which easily forms a phase-separated structure with the bisphenol A type epoxy resin.
- first resin and the second resin may each contain an appropriate solvent for the purpose of viscosity adjustment and the like.
- the ratio of the first resin to the second resin is not particularly limited as long as the phase separation structure of the first resin phase 1 and the second resin phase 2 can be formed.
- the weight ratio is 95:5. to 30:70, more preferably 90:10 to 50:50.
- the amount of the first resin is extremely excessive and the amount of the second resin is too small, the first resin phase 1 becomes close to a monolayer state, and a suitable phase separation structure cannot be obtained. If the amount of the first resin decreases, the ratio of the first resin phase 1 also decreases.
- the thermally conductive filler unevenly distributed in the first resin phase 1 tends to become saturated, resulting in the surplus thermally conductive filler entering the second resin phase 2.
- the effect of improving thermal conductivity due to the phase separation structure may also reach a peak.
- the thermally conductive filler 3 is an aggregate of particles capable of conducting heat.
- the thermally conductive filler 3 has higher thermal conductivity than the first resin phase 1 and the second resin phase 2 . That is, the thermally conductive filler 3 has a smaller thermal resistance than the first resin phase 1 and the second resin phase 2 .
- Particles constituting the thermally conductive filler 3 are preferably particles containing an inorganic material such as alumina or spinel. In this case, the thermal conductivity of the thermally conductive filler 3 tends to be higher than when particles containing an organic material are used.
- the thermally conductive filler 3 preferably contains polyhedral particles.
- a polyhedral particle is a particle having a polygonal shape such as a hexagon or an octagon in cross-section, and the outer surface of the polyhedral particle preferably has a plurality of flat faces.
- the shape of the polyhedral particles can be confirmed with a scanning electron microscope (SEM). If, for example, 5 or more and 150 or less faces can be confirmed in a polyhedral particle confirmed with an electron microscope, it can be determined to be a polyhedron.
- Polyhedral particles can increase the contact area between adjacent particles compared to spherical particles. Therefore, thermal conductivity between particles is improved. Therefore, the thermal resistance of the thermally conductive resin composition and the thermally conductive resin material can be easily reduced.
- the distribution curve of the number of polyhedral particles - the number of faces of the particles preferably has a maximum peak at a position where the number of faces of the polyhedral particles is 8 or more and 40 or less.
- the thermal resistance of the thermally conductive resin material can be particularly effectively reduced. This is because when the number of facets of the particles is 14 or more and 25 or less, the likelihood of contact between particles and the size of the contact area are high in a well-balanced manner, and as a result, heat conduction between particles is particularly likely to occur. It is believed that there is.
- the maximum peak is located at a position where the number of faces of the grain is 14 or more and 25 or less, and it is particularly preferable if the maximum peak is located at a position where the number of faces of the grain is 14 or more and 18 or less. Moreover, it is more preferable that the maximum peak is located at a position where the number of facets of the grain is close to 16.
- the thermally conductive filler 3 is preferably an alumina filler with a ⁇ conversion rate of 80% or more.
- the thermal resistance of the thermally conductive resin material can be effectively reduced. It is believed that this is because the polyhedral particles tend to come into surface contact with each other in the thermally conductive resin material, so that the heat transfer efficiency between the particles tends to increase.
- the ⁇ conversion rate of the alumina filler is 80% or more, it tends to have high thermal conductivity, so that the heat transfer efficiency through the polyhedral particles tends to be further increased.
- the ⁇ -conversion rate is more preferably 110% or more, and even more preferably 120% or more.
- the thermal conductivity of the thermally conductive filler 3 is preferably 30 W/m ⁇ K or more. In this case, the thermal resistance of the thermally conductive resin material can be particularly effectively reduced. Such high thermal conductivity of the thermally conductive filler 3 can be realized by the high alpha conversion rate of the alumina filler.
- the average particle diameter of the thermally conductive filler 3 is preferably 1 ⁇ m or more and 100 ⁇ m or less, for example.
- the average particle diameter of the thermally conductive filler 3 is the median diameter (D50) calculated from the particle size distribution obtained by the dynamic light scattering method.
- the thermally conductive filler 3 is more concentrated in the first resin phase 1 than in the second resin phase 2 . That is, more particles of the thermally conductive filler 3 are present in the first resin phase 1 than in the second resin phase 2 .
- the thermally conductive filler 3 contained in the thermally conductive resin composition is present in the first resin phase 1, and the second resin phase 2 is Some forms do not exist at all. In this way, more thermally conductive fillers 3 are unevenly distributed in the first resin phase 1 than in the second resin phase 2, so that the thermally conductive fillers 3 are dispersed in both the first resin phase 1 and the second resin phase 2.
- the density (packing density) of the particles of the thermally conductive filler 3 in the first resin phase 1 is higher than in the case where Therefore, the adjacent particles of the thermally conductive filler 3 are likely to come into contact with each other, and the contact area between the adjacent particles of the thermally conductive filler 3 is increased, and the contact pressure is increased. Therefore, the thermal conductivity of the thermally conductive filler 3 is improved.
- thermally conductive fillers 3 contained in the thermally conductive resin composition more than half of the thermally conductive fillers 3 are preferably unevenly distributed in the first resin phase 1, and 60% or more of the thermally conductive fillers 3 are unevenly distributed. More preferably, the conductive filler 3 is unevenly distributed in the first resin phase 1 . Further, all (100%) of the thermally conductive fillers 3 contained in the thermally conductive resin composition may be unevenly distributed in the first resin phase 1 .
- the thermally conductive filler 3 is more likely to be unevenly distributed in the first resin phase 1 than in the second resin phase 2 when it is more compatible with the first resin phase 1 than in the second resin phase 2 . That is, due to the properties of the surface of the particles of the thermally conductive filler 3 , it is easier to be unevenly distributed in the first resin phase 1 than in the second resin phase 2 . For example, if the surfaces of the particles of the thermally conductive filler 3 have a component (such as a functional group) that has an affinity for the first resin phase 1 rather than the second resin phase 2, the thermally conductive filler 3 is the second resin It is easier to disperse in the first resin phase 1 than in the phase 2 and tends to be unevenly distributed.
- a component such as a functional group
- the thermally conductive filler 3 may be treated with a coupling agent.
- the thermally conductive filler 3 tends to disperse well in the first resin phase 1 in the thermally conductive resin composition and the thermally conductive resin material. Therefore, the thermal resistance of the thermally conductive resin material is likely to be reduced.
- the proportion of the thermally conductive filler 3 is preferably 60% by volume or more with respect to the entire thermally conductive resin composition. If this ratio is 60% by volume or more, the thermal resistance of the thermally conductive resin material can be particularly easily reduced. More preferably, the proportion of the thermally conductive filler is 70% by volume or more. In this case, the thermal resistance of the thermally conductive resin material can be further reduced. It is also preferable that the proportion of the thermally conductive filler 3 is 80% by volume or less. In this case, the thermally conductive resin composition tends to have good fluidity, and the thermally conductive resin material tends to have good flexibility.
- the thermally conductive resin composition is preferably liquid or paste at 25°C.
- the viscosity of the thermally conductive resin composition at 25° C. is preferably 3000 Pa ⁇ s or less.
- the thermally conductive resin composition can have good moldability, and can be easily molded into a film, sheet, plate, or the like using a dispenser, for example.
- the thermally conductive resin composition is easily defoamed, and therefore voids are less likely to occur in the thermally conductive resin material.
- the viscosity is a value measured using an E-type rotational viscometer at 0.3 rpm.
- the thermally conductive resin composition is prepared, for example, by kneading the first resin, the second resin, and the thermally conductive filler 3.
- the first resin phase 1 is formed so as not to be interrupted, so that the plurality of particles of the thermally conductive filler 3 are connected while being in contact with each other, and unevenly distributed in the first resin phase 1. Become.
- the thermally conductive resin material according to the present embodiment is a solidified product of the thermally conductive resin composition according to the present embodiment. That is, the thermally conductive resin material of this embodiment includes the solid phase of the first resin phase 1 , the solid phase of the second resin phase 2 , and the thermally conductive filler 3 .
- the solid-phase first resin phase 1 is a solidified product of the liquid-phase first resin phase 1 in the thermally conductive resin composition.
- the solid-phase second resin phase 2 is a solidified substance of the second resin phase 2 that was in the liquid phase in the thermally conductive resin composition.
- the liquid first resin phase 1 is an uncured thermosetting resin
- the solid first resin phase 1 is composed of a thermosetting thermosetting resin.
- Thermosetting resins may be cured using a curing agent.
- the liquid second resin phase 2 is a thermoplastic resin
- the solid second resin phase 2 is composed of a thermoplastic resin solidified by lowering the temperature.
- a larger amount of the thermally conductive filler 3 is unevenly distributed in the first solid-phase resin phase 1 than in the second solid-phase resin phase 2 .
- the thermally conductive filler 3 is further pushed against the first resin phase 1 by the stress generated when the first resin phase 1 and the second resin phase 2 are solidified. Therefore, uneven distribution of the thermally conductive filler 3 in the first resin phase 1 progresses more in the case of the thermally conductive resin material than in the case of the thermally conductive resin composition.
- the thermally conductive resin composition When producing a thermally conductive resin material from a thermally conductive resin composition, for example, the thermally conductive resin composition is formed into a film, film, sheet or plate by an appropriate method such as press molding, extrusion molding, calender molding, or the like. It is molded into a shape, etc. It is also preferable to mold the thermally conductive resin composition into a film or the like using a dispenser. After that, the film-like thermally conductive resin composition is cured by heating under conditions corresponding to the composition, thereby obtaining a film-like thermally conductive resin material.
- the thermally conductive resin material tends to have low thermal resistance. This is because, as described above, the particles of the thermally conductive filler 3 come into contact with each other in the thermally conductive resin material to form a path through which heat can be transferred. This is probably because the heat transfer efficiency of the
- the thermal resistance of the thermally conductive resin material in the direction of the press pressure tends to be particularly low. It is considered that this is because the particles of the thermally conductive filler 3 tend to come into contact with each other in the direction of the pressing pressure. In the present embodiment, as described above, since the particles are likely to come into surface contact with each other, the thermal resistance is particularly likely to be reduced by applying a pressing pressure, and the thermal resistance can be reduced even if the pressing pressure is small.
- the thermally conductive resin material according to the present embodiment has a reduced thermal resistance as described above, so that the thermally conductive resin material in the direction of the pressing pressure in a state of being directly pressed under the condition of a pressing pressure of 1 MPa is preferably 0.8 K/W or less.
- the thermally conductive resin material can exhibit excellent thermal conductivity, and can easily transmit heat efficiently even when the pressing pressure is low.
- This thermal resistance is more preferably 0.7 K/W or less, and even more preferably 0.6 K/W or less.
- the particles of the thermally conductive filler 3 are arranged in a row in the first resin phase 1 between the second resin phases 2 .
- a plurality of particles of the thermally conductive filler 3 are arranged in a vertical direction (for example, the thickness direction of the sheet-like thermally conductive resin material) in the first resin phase 1 between the second resin phases 2. are placed.
- the thermally conductive resin composition according to this embodiment can be used as a heat dissipation paste. Further, the thermally conductive resin material according to this embodiment can be used as a heat dissipation sheet.
- the heat-dissipating paste and the heat-dissipating sheet are placed, for example, between the chip component and the heat sink to facilitate conduction of heat generated by the chip component to the heat sink.
- the thermally conductive resin material includes three or more resin phases.
- a resin phase containing a thermosetting resin different from the first resin phase may be used together, or a resin phase containing a thermoplastic resin different from the second resin phase may be used together.
- the thermally conductive resin composition and the thermally conductive resin material contain two or more types of thermally conductive fillers 3.
- the thermally conductive resin composition and the thermally conductive resin material may be composed of
- a plurality of types of thermally conductive fillers 3 having different particle sizes may be contained in the thermally conductive resin composition and the thermally conductive resin material, or a plurality of types of thermally conductive fillers 3 having different components may be thermally conductive.
- the thermally conductive resin composition and the thermally conductive resin material may contain a plurality of types of thermally conductive fillers 3 having different particle cross-sectional shapes.
- at least one selected from the group consisting of metal oxide particles, metal nitride particles, metal carbide particles, metal boride particles, and metal single particles may be used as the thermally conductive filler 3.
- a thermally conductive resin composition was prepared using the components shown below.
- First resin epoxy resin (bisphenol A type epoxy resin, manufactured by JER Corporation, combined use of Epicoat 828 and Epicote 834, SP value 13.5)
- Second resin polyethersulfone (manufactured by ICI, Victrex 5003P, SP value 12.5)
- Curing agent (4,4'-methylenedianiline, manufactured by Tokyo Chemical Industry Co., Ltd.)
- Thermally conductive filler 80% by weight of molybdenum-doped polyhedral spinel particles with an average particle size of 70 ⁇ m, 10% by weight of molybdenum-doped polyhedral spinel particles with an average particle size of 10 ⁇ m, average particle size
- a polyhedral filler containing 5% by mass of polyhedral alumina particles manufactured by Sumitomo Chemical Co., Ltd.) having a diameter of 0.4 ⁇ m. The remainder (5% by mass) contains the first resin and the second resin.
- the above ingredients were kneaded in the blending amounts shown in Table 1 to obtain a thermally conductive resin composition.
- the content of the thermally conductive filler is the ratio of the thermally conductive filler to the total amount of the thermally conductive resin composition (the total amount of the first resin, the second resin, the curing agent, and the thermally conductive filler).
- the viscosity of the thermally conductive resin composition was measured at 0.3 rpm using an E-type viscometer (model number RC-215) manufactured by Toki Sangyo Co., Ltd. as a measuring device.
- a sheet-like sample with a thickness of 100 ⁇ m was prepared by hot-pressing the thermally conductive resin composition for 2 hours at a heating temperature of 150° C. and a pressing pressure of 1 MPa. This sample was sandwiched between two copper plates, and the sample was directly pressed with these plates at a press pressure of 1 MPa. In this state, the thermal resistance of the sample in the direction of the press pressure was measured at room temperature using DynTIM Tester manufactured by Mentor Graphic.
- Example 1 was able to reduce the thermal resistance value even though the filler content was the same. Comparing Example 2 and Comparative Example 2, it can be seen that although the filler content is the same, Example 2 has a lower thermal resistance value and a lower viscosity. rice field. Comparing Example 3 and Comparative Example 3, although the content of the filler is the same, Example 3 can reduce the heat resistance value, and the viscosity is also lower in Example 3. rice field.
- the thermally conductive resin composition of this embodiment can be used as a heat dissipation paste. Further, the thermally conductive resin material of this embodiment can be used as a heat dissipation sheet.
- the heat-dissipating paste and the heat-dissipating sheet are placed, for example, between an electronic/electric component such as a transistor and a CPU (Central Processing Unit) of a computer and a radiator (heat sink).
- the heat dissipation paste and the heat dissipation sheet conduct the heat generated from the electronic/electric parts to the radiator.
Abstract
Description
本実施形態に係る熱伝導性樹脂組成物は、第1樹脂相と、第2樹脂相と、熱伝導性フィラーと、を含む。第1樹脂相と第2樹脂相とは相分離しており、多相系を構成している。そして、第1樹脂相における熱伝導性フィラーの密度は、第2樹脂相における熱伝導性フィラーの密度よりも高い。すなわち、単位体積あたりの第1樹脂相に含まれる熱伝導性フィラーの粒子の量が、単位体積あたりの第2樹脂相に含まれる熱伝導性フィラーの粒子の量よりも多い。従って、第1樹脂相と第2樹脂相の合計量に対する熱伝導性フィラーの含有量が一定であれば、熱伝導性フィラーが第1樹脂相と第2樹脂相の両方に均等に分散している場合に比べて、熱伝導性フィラーが第2樹脂相よりも第1樹脂相に多く偏在している場合(本実施形態の熱伝導性樹脂組成物の場合)の方が、熱伝導性フィラーの粒子同士が接触しやすくなる。よって、本実施形態の熱伝導性樹脂組成物は、熱伝導性フィラーの充填量が少なくても熱伝導性を向上させることができる。また本実施形態の熱伝導性樹脂組成物は、熱伝導性フィラーの充填量が少ないために粘度の上昇も抑えられる。
2-1.熱伝導性樹脂組成物
本実施形態に係る熱伝導性樹脂組成物は、第1樹脂相と、第2樹脂相と、熱伝導性フィラー3と、を含んでいる。
本実施形態に係る熱伝導性樹脂材料は、本実施形態に係る熱伝導性樹脂組成物の固化物である。すなわち、本実施形態の熱伝導性樹脂材料は、第1樹脂相1の固相と、第2樹脂相2の固相と、熱伝導性フィラー3とを含んでいる。固相の第1樹脂相1は、熱伝導性樹脂組成物において液相であった第1樹脂相1の固化物である。固相の第2樹脂相2は、熱伝導性樹脂組成物において液相であった第2樹脂相2の固化物である。液相の第1樹脂相1が未硬化の熱硬化性樹脂の場合、固相の第1樹脂相1は熱硬化した熱硬化性樹脂で構成される。熱硬化性樹脂は硬化剤を使用して硬化してもよい。液相の第2樹脂相2が熱可塑性樹脂の場合、固相の第2樹脂相2は低温化により固化した熱可塑性樹脂で構成される。熱伝導性フィラー3は、固相の第2樹脂相2よりも固相の第1樹脂相1に多く偏在している。熱伝導性フィラー3は、第1樹脂相1及び第2樹脂相2が固化する際に生じる応力で、さらに第1樹脂相1に押される。従って、熱伝導性樹脂組成物のときよりも熱伝導性樹脂材料のほうが、熱伝導性フィラー3の第1樹脂相1への偏在化が進む。
上記では、第1樹脂相と第2樹脂相との二種類の樹脂相からなる場合について説明したが、これに限らず、三種類以上の樹脂相を含んで熱伝導性樹脂組成物を構成してもよい。この場合、熱伝導性樹脂材料は三種類以上の樹脂相を含んで構成される。例えば、第1樹脂相とは異なる種類の熱硬化性樹脂を含む樹脂相を併用してもよいし、第2樹脂相とは異なる種類の熱可塑性樹脂を含む樹脂相を併用してもよい。
・第2樹脂:ポリエーテルスルホン(ICI社製,Victrex 5003P、SP値12.5)
・硬化剤(4,4’-メチレンジアニリン、東京化成工業株式会社製)
・熱伝導性フィラー:平均粒径70μmの、モリブデンがドープされた多面体状のスピネル粒子を80質量%、平均粒径10μmの、モリブデンがドープされた多面体状のスピネル粒子を10質量%、平均粒径0.4μmの多面体状のアルミナ粒子(住友化学工業製)を5質量%の割合で含有する多面体フィラー。残部(5質量%)は第1樹脂と第2樹脂を含む。
2 第2樹脂相
3 熱伝導性フィラー
Claims (7)
- 第1樹脂相と、第2樹脂相と、熱伝導性フィラーと、を含み、
前記第1樹脂相と前記第2樹脂相とは相分離しており、
前記第1樹脂相における熱伝導性フィラーの密度は、前記第2樹脂相における熱伝導性フィラーの密度よりも高い、
熱伝導性樹脂組成物。 - 前記第1樹脂相を構成する第1樹脂の溶解度パラメータと、前記第2樹脂相を構成する第2樹脂の溶解度パラメータとの差が1以上である、
請求項1に記載の熱伝導性樹脂組成物。 - 前記熱伝導性フィラーは多面体粒子を含む、
請求項1に記載の熱伝導性樹脂組成物。 - 前記熱伝導性フィラーは多面体粒子を含み、
前記第1樹脂相を構成する第1樹脂の溶解度パラメータと、前記第2樹脂相を構成する第2樹脂の溶解度パラメータとの差が1以上である、
請求項1に記載の熱伝導性樹脂組成物。 - 前記第1樹脂相は熱硬化性樹脂を含み、
前記第2樹脂相は熱可塑性樹脂を含む、
請求項1~4のいずれか1項に記載の熱伝導性樹脂組成物。 - 前記第1樹脂相はエポキシ樹脂を含み、
前記第2樹脂相はポリエーテルスルホンを含む、
請求項5に記載の熱伝導性樹脂組成物。 - 請求項1~4のいずれか1項に記載の熱伝導性樹脂組成物の固化物であって、
前記第1樹脂相の固相と、前記第2樹脂相の固相と、前記熱伝導性フィラーと、を含む、
熱伝導性樹脂材料。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280014804.XA CN116888238A (zh) | 2021-03-09 | 2022-03-09 | 导热树脂组合物和导热树脂材料 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021037709 | 2021-03-09 | ||
JP2021-037709 | 2021-03-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022191238A1 true WO2022191238A1 (ja) | 2022-09-15 |
Family
ID=83226757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/010288 WO2022191238A1 (ja) | 2021-03-09 | 2022-03-09 | 熱伝導性樹脂組成物及び熱伝導性樹脂材料 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP2022138157A (ja) |
CN (1) | CN116888238A (ja) |
WO (1) | WO2022191238A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115449325A (zh) * | 2022-09-30 | 2022-12-09 | 浙江华正新材料股份有限公司 | 电子浆料、绝缘胶膜及其应用 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005255867A (ja) * | 2004-03-12 | 2005-09-22 | Mitsuboshi Belting Ltd | 熱伝導材料およびその製造方法 |
JP2009263476A (ja) * | 2008-04-24 | 2009-11-12 | Otsuka Chem Co Ltd | 高熱伝導性樹脂組成物 |
JP2012140509A (ja) * | 2010-12-28 | 2012-07-26 | Jsr Corp | 発泡成形体、熱伝導性成形体及びその製造方法、並びに熱伝導性シート積層体 |
JP2013194223A (ja) * | 2012-03-22 | 2013-09-30 | Mitsubishi Chemicals Corp | 熱伝導性材料 |
WO2014155975A1 (ja) * | 2013-03-28 | 2014-10-02 | パナソニック株式会社 | 絶縁熱伝導性樹脂組成物 |
WO2015174023A1 (ja) * | 2014-05-15 | 2015-11-19 | パナソニックIpマネジメント株式会社 | 絶縁熱伝導性樹脂組成物 |
JP2016166374A (ja) * | 2013-10-24 | 2016-09-15 | Dic株式会社 | 樹脂組成物、放熱材料及び放熱部材 |
JP2017014302A (ja) * | 2013-11-20 | 2017-01-19 | パナソニック株式会社 | 絶縁樹脂組成物及びこれを備えた物品 |
JP2018050018A (ja) * | 2016-09-23 | 2018-03-29 | Koa株式会社 | 封入材 |
JP2018115276A (ja) * | 2017-01-19 | 2018-07-26 | 東亞合成株式会社 | 有機−無機複合物およびその製造方法 |
-
2022
- 2022-03-09 WO PCT/JP2022/010288 patent/WO2022191238A1/ja active Application Filing
- 2022-03-09 JP JP2022036481A patent/JP2022138157A/ja active Pending
- 2022-03-09 CN CN202280014804.XA patent/CN116888238A/zh active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005255867A (ja) * | 2004-03-12 | 2005-09-22 | Mitsuboshi Belting Ltd | 熱伝導材料およびその製造方法 |
JP2009263476A (ja) * | 2008-04-24 | 2009-11-12 | Otsuka Chem Co Ltd | 高熱伝導性樹脂組成物 |
JP2012140509A (ja) * | 2010-12-28 | 2012-07-26 | Jsr Corp | 発泡成形体、熱伝導性成形体及びその製造方法、並びに熱伝導性シート積層体 |
JP2013194223A (ja) * | 2012-03-22 | 2013-09-30 | Mitsubishi Chemicals Corp | 熱伝導性材料 |
WO2014155975A1 (ja) * | 2013-03-28 | 2014-10-02 | パナソニック株式会社 | 絶縁熱伝導性樹脂組成物 |
JP2016166374A (ja) * | 2013-10-24 | 2016-09-15 | Dic株式会社 | 樹脂組成物、放熱材料及び放熱部材 |
JP2017014302A (ja) * | 2013-11-20 | 2017-01-19 | パナソニック株式会社 | 絶縁樹脂組成物及びこれを備えた物品 |
WO2015174023A1 (ja) * | 2014-05-15 | 2015-11-19 | パナソニックIpマネジメント株式会社 | 絶縁熱伝導性樹脂組成物 |
JP2018050018A (ja) * | 2016-09-23 | 2018-03-29 | Koa株式会社 | 封入材 |
JP2018115276A (ja) * | 2017-01-19 | 2018-07-26 | 東亞合成株式会社 | 有機−無機複合物およびその製造方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115449325A (zh) * | 2022-09-30 | 2022-12-09 | 浙江华正新材料股份有限公司 | 电子浆料、绝缘胶膜及其应用 |
CN115449325B (zh) * | 2022-09-30 | 2024-01-09 | 浙江华正新材料股份有限公司 | 电子浆料、绝缘胶膜及其应用 |
Also Published As
Publication number | Publication date |
---|---|
JP2022138157A (ja) | 2022-09-22 |
CN116888238A (zh) | 2023-10-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5089908B2 (ja) | 高熱伝導性樹脂コンパウンド・高熱伝導性樹脂成形体・放熱シート用配合粒子、高熱伝導性樹脂コンパウンド・高熱伝導性樹脂成形体・放熱シート、および、その製造方法 | |
JP2003060134A (ja) | 熱伝導性シート | |
JP5793494B2 (ja) | セラミックス混合物、及びそれを用いたセラミックス含有熱伝導性樹脂シート | |
JP5405890B2 (ja) | 熱伝導性成形体とその用途 | |
JP7389014B2 (ja) | 絶縁放熱シート | |
JP7220150B2 (ja) | 低誘電率熱伝導性放熱部材 | |
WO2022191238A1 (ja) | 熱伝導性樹脂組成物及び熱伝導性樹脂材料 | |
JP3891969B2 (ja) | 熱伝導性グリース | |
JP7082563B2 (ja) | 熱伝導性シリコーン組成物の硬化物 | |
WO2021090780A1 (ja) | 熱伝導性シリコーン組成物及び熱伝導性シリコーン材料 | |
WO2021044867A1 (ja) | 熱伝導性シリコーン組成物及び熱伝導性シリコーン材料 | |
JP2021109825A (ja) | 熱伝導性フィラー、及びそれを含有する熱伝導性組成物 | |
JP4481019B2 (ja) | 混合粉末及びその用途 | |
JP7136065B2 (ja) | 熱伝導性シリコーン組成物及び熱伝導性シリコーンシート | |
JP2016124908A (ja) | 樹脂成形体 | |
JPH11145351A (ja) | 放熱スペーサー | |
JP2021195478A (ja) | 熱伝導性シリコーン組成物、その硬化物、及び放熱シート | |
US20240132767A1 (en) | Thermally conductive resin composition and thermally conductive resin material | |
WO2021171970A1 (ja) | 熱伝導性シリコーン組成物及び熱伝導性シリコーン材料 | |
CN106590409A (zh) | 一种高导热石墨烯复合垫片包覆处理工艺 | |
WO2021241700A1 (ja) | 硬化シート及びその製造方法 | |
JP3757636B2 (ja) | 放熱シート形成用の熱伝導性シリコーンゴム組成物の製造方法及び放熱シート形成用の熱伝導性シリコーンゴム組成物 | |
KR101126644B1 (ko) | 에폭시 복합재료 | |
US20240026203A1 (en) | Thermal interface composition and thermal interface material | |
JP2024060280A (ja) | 無機フィラーを高充填化した熱伝導性有機無機コンポジット材料 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22767192 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280014804.X Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18548316 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 22767192 Country of ref document: EP Kind code of ref document: A1 |