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WO2025135702A1 - Composition de matériau de remplissage et bloc-batterie - Google Patents

Composition de matériau de remplissage et bloc-batterie Download PDF

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Publication number
WO2025135702A1
WO2025135702A1 PCT/KR2024/020417 KR2024020417W WO2025135702A1 WO 2025135702 A1 WO2025135702 A1 WO 2025135702A1 KR 2024020417 W KR2024020417 W KR 2024020417W WO 2025135702 A1 WO2025135702 A1 WO 2025135702A1
Authority
WO
WIPO (PCT)
Prior art keywords
gap filler
particles
filler composition
siloxane
composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/KR2024/020417
Other languages
English (en)
Korean (ko)
Inventor
심민규
김현우
신우준
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongwoo Fine Chem Co Ltd
Original Assignee
Dongwoo Fine Chem Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongwoo Fine Chem Co Ltd filed Critical Dongwoo Fine Chem Co Ltd
Publication of WO2025135702A1 publication Critical patent/WO2025135702A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/12—Polysiloxanes containing silicon bound to hydrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
    • C08G77/26—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen nitrogen-containing groups
    • 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
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • 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
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a gap filler composition and a battery pack. More specifically, it relates to a gap filler composition comprising a siloxane-based resin and a battery pack comprising a gap filler formed using the same.
  • Secondary batteries are batteries that can be repeatedly charged and discharged, and are widely used as power sources for portable electronic devices such as mobile phones and laptop PCs.
  • lithium secondary batteries have high operating voltage, energy density, and rate characteristics, and have recently been used as power sources for electric vehicles.
  • a battery cell is defined by a lithium secondary battery, and a plurality of battery cells are assembled to form a battery module.
  • the battery modules can be assembled to form a high-capacity/high-output battery pack applicable to electric vehicles.
  • the battery pack can be secured to a battery support plate and a gap filler composition can be used to secure the battery pack.
  • the above gap filler composition application process can be included in the entire electric vehicle production platform. Therefore, a gap filler composition that is cured within a predetermined time period and provides desired properties may be required to maintain automotive process efficiency/reliability.
  • l x is the average value of the major axis length of 10 to 30 particles included in the SEM image of the graphite particles
  • l y is the average value of the minor axis length of 10 to 30 particles included in the SEM image of the graphite particles
  • graphite particles satisfying a sphericity range may be used.
  • the graphite particles may be spherical graphite.
  • the thermal conductivity of the gap filler composition may be improved by the graphite particles satisfying the sphericity range.
  • the gap filler composition can be applied to a vehicle battery pack to reduce the weight of the battery pack while promoting rapid heat dissipation even when the temperature increases due to repeated charging/discharging of the battery pack.
  • FIG. 1 is a schematic cross-sectional view illustrating a battery pack according to exemplary embodiments.
  • a gap filler composition comprising a siloxane-based resin, a catalyst, and a filler, and having improved curing characteristics and flowability is provided.
  • a battery pack using the gap filler composition is provided.
  • a gap filler composition according to exemplary embodiments may include a siloxane-based resin, a catalyst, and a filler.
  • the above siloxane-based resin may be provided as a base component that provides curability of the gap filler composition.
  • the siloxane-based resin may include a first siloxane-based resin and a second siloxane-based resin.
  • the first siloxane-based resin may be a siloxane-based resin containing crosslinkable terminal groups.
  • the first siloxane-based resin may be a siloxane-based resin containing unsaturated terminal groups (e.g., vinyl groups) at both ends of the molecule.
  • the viscosity at 25 o C of the first siloxane resin can be from 50 cps to 150,000 cps, from 70 cps to 1,500 cps, from 100 cps to 1,500 cps, from 200 cps to 1,500 cps, or from 300 cps to 1,200 cps.
  • the weight average molecular weight of the first siloxane-based resin can be adjusted in consideration of the viscosity within the above-described range.
  • the weight average molecular weight of the first siloxane-based resin can be 1,500 to 50,000, 10,000 to 50,000, 10,000 to 30,000, or 10,000 to 25,000.
  • n can be adjusted in consideration of the viscosity range.
  • n can be a natural number in the range of 40 to 800, 80 to 800, 100 to 800, 130 to 700, or 150 to 700.
  • the content of the first siloxane-based resin among the total weight of the gap filler composition may be 1.5 wt% to 13 wt%. In one embodiment, the content of the first siloxane-based resin may be 5 wt% to 13 wt%, 7 wt% to 12 wt%, or 7.5 wt% to 10 wt%. Within the content range, a gap filler having appropriate hardness and elasticity can be effectively formed.
  • the above second siloxane-based resin may be a siloxane-based resin having a different structure from the above first siloxane-based resin.
  • the above second siloxane resin is included as a chain extender or chain regulator of the gap filler composition, and can control the overall viscosity, flowability, crosslinking property, etc. of the composition.
  • the second siloxane-based resin may be a siloxane-based resin having a saturating group (e.g., a hydrogen atom) bonded to silicon atoms at both terminals.
  • a saturating group e.g., a hydrogen atom
  • the second siloxane resin may include a compound represented by the following chemical formula 2.
  • the viscosity of the second siloxane resin at 25 o C can be from 10 cps to 1,500 cps, from 100 cps to 1,500 cps, from 200 cps to 1,500 cps, or from 300 cps to 1,200 cps.
  • the weight average molecular weight of the second siloxane-based resin can be adjusted according to the viscosity range.
  • the weight average molecular weight of the second siloxane-based resin can be 500 to 50,000, 10,000 to 50,000, 10,000 to 30,000, or 10,000 to 25,000.
  • the curing characteristics and curing speed described below can be more easily secured, and appropriate application characteristics and flowability of the gap filler composition can be secured.
  • m can be adjusted in consideration of the molecular weight and viscosity range.
  • m can be a natural number in the range of 10 to 700, 20 to 700, 30 to 700, 50 to 700, 100 to 700, or 130 to 700.
  • the content of the second siloxane-based resin among the total weight of the gap filler composition may be 0.5 wt% to 10 wt%. In one embodiment, the content of the second siloxane-based resin may be 2 wt% to 10 wt%, 2 wt% to 7 wt%, or 2 wt% to 5 wt%. Within the content range, a gap filler having appropriate hardness and elasticity can be effectively formed.
  • the content of the siloxane-based resin with respect to the total weight (e.g., solid content) of the gap filler composition may be from 2 wt% to 23 wt%. In one embodiment, the content of the siloxane-based resin may be from 7 wt% to 23 wt%, from 7 wt% to 20 wt%, from 10 wt% to 15 wt%, or from 10 wt% to 14 wt%.
  • the gap filler composition may further comprise a crosslinking agent.
  • the crosslinking agent may be a siloxane resin having relatively low viscosity and having methyl groups bonded to silicon atoms at both terminals.
  • the crosslinking agent may comprise a compound represented by Chemical Formula 3.
  • the viscosity of the crosslinking agent may be less than the viscosity of the second siloxane-based resin. In one embodiment, the viscosity of the crosslinking agent may be less than 100 cps at 25 o C, and n in Chemical Formula 3 may be adjusted in consideration of the viscosity range.
  • the catalyst may comprise a compound or complex of Pt(II), Pt(IV) and/or Pt(0).
  • the catalyst may comprise chloroplatinic acid, Ashby's catalyst or Karstedt catalyst.
  • the strength of the gap filler formed using the gap filler composition within the above range can be enhanced against external impact.
  • the crushing strength of the hollow particles is less than 1,000 psi, some of the hollow particles may be destroyed, thereby causing uncuring or increasing the specific gravity of the gap filler composition.
  • the specific gravity of the gap filler composition may increase as the density of the hollow particles increases.
  • a siloxane unit represented by the general formula 1 may be included as a repeating unit of the amino-silicone-based dispersant.
  • An amino-containing group represented by the general formula 2 may be bonded as R a or R b of at least one of the siloxane units among the repeating siloxane units.
  • the amino-silicon-based dispersant may include a terminal amine group (-NH 2 ).
  • a terminal amine group (-NH 2 ).
  • the inclusion of an amine group at the terminal of the amino-silicon-based dispersant may enhance the dispersibility of aluminum hydroxide.
  • a dispersant containing a siloxane unit can be used to stabilize the filler between the interface between the siloxane-based resin and the filler described above. Accordingly, agglomeration of the filler can be prevented, the viscosity of the composition can be stably maintained, and the flowability can be improved.
  • a dispersant containing a hydroxyl group or an epoxy group may not be used as the dispersant. Accordingly, side reactions by the filler and the siloxane resin due to the hydroxyl group or epoxy group can be prevented, and the composition dispersibility and thermal conductivity uniformity can be improved.
  • the gap filler composition may further include an additive for improving the conductivity and curability of the composition within a range that does not inhibit the actions of the siloxane-based resin, the catalyst, and the filler described above.
  • the additive may include a flame retardant, a surfactant, a silane coupling agent, a colorant (e.g., a pigment), an antioxidant, a plasticizer, and the like.
  • the additives may be included in the composition as a remainder or extra amount excluding the siloxane-based resin, the catalyst, and the filler described above.
  • examples of the flame retardant include organic flame retardants such as melamine cyanurate, and inorganic flame retardants such as magnesium hydroxide.
  • a liquid type flame retardant material such as triethyl phosphate (TEP) or tris (1,3-chloro-2-propyl) phosphate (TCPP) may be used.
  • examples of the surfactant include polyethylene glycol, polypropylene glycol, oleic acid ethoxylate, alkylphenol ethoxylate, copolymers of ethylene oxide and propylene oxide, and silicone polymers.
  • silane coupling agent examples include ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -glycidoxypropylmethyldiethoxysilane, ⁇ -glycidoxypropyltriethoxysilane, 3-mercapto propyl trimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, ⁇ -methacryloxypropyltrimethoxysilane, ⁇ -methacryloxypropyltriethoxysilane, ⁇ -aminopropyltrimethoxysilane, ⁇ -aminopropyltriethoxysilane, 3-isocyanatepropyltriethoxysilane, ⁇ -acetoacetatepropyltrimethoxysilane, and the like.
  • a gap filler having improved mechanical stability can be manufactured without increasing the weight of the battery pack within the above specific gravity range.
  • the viscosity of the gap filler composition may be 1,000 Pa ⁇ s or less, 850 Pa ⁇ s or less, or 200 Pa ⁇ s or more and 750 Pa ⁇ s or less.
  • the viscosity may be a value measured at 25 o C.
  • the stability of the gap filler composition is ensured within the above viscosity range, so that long-term storage is possible.
  • the above gap filler composition can be prepared as a two-component composition.
  • the gap filler composition can be prepared by separately preparing the subject composition and the crosslinking composition, and then mixing the subject composition and the crosslinking composition.
  • the first siloxane resin described above may be commonly included in the subject composition and the crosslinking composition.
  • the gap filler composition may be prepared as a two-component composition.
  • the gap filler composition may be prepared by separately preparing the subject composition and the crosslinking composition, and then mixing the subject composition and the crosslinking composition.
  • the above-mentioned subject composition may include the first siloxane-based resin, the catalyst, and the filler.
  • the above-mentioned crosslinking composition may include the second siloxane-based resin, the crosslinking agent, and the filler.
  • the second siloxane-based resin can be mixed in the subject composition while the catalyst is distributed in the first siloxane-based resin. Accordingly, since the second siloxane-based resin is introduced while the crosslinking points are distributed in the subject composition, the curing efficiency can be improved.
  • the first siloxane-based resin may also be included in the crosslinking composition.
  • the weight of the first siloxane-based resin included in the subject composition may be greater than the weight of the first siloxane-based resin included in the crosslinking composition.
  • the filler may be divided and included in the subject composition and the crosslinking composition.
  • the ratio of the amount of the filler included in the subject composition to the amount of the filler included in the crosslinking composition may be 0.8 to 1.2, or 0.85 to 1.15. In the above ratio range, the heat conduction efficiency can be improved through uniform distribution of the filler.
  • the filler includes thermally conductive inorganic particles, hollow particles and graphite particles, and an amino-silicon-based dispersant may be used to improve the dispersibility of the non-surface-treated particles.
  • the amino-silicon-based dispersant may also be divided and included in the subject composition and the crosslinked composition.
  • FIG. 1 is a schematic cross-sectional view illustrating a battery pack according to exemplary embodiments.
  • a battery pack (100) includes a battery module (110) and a support plate (130), and may include a gap filler (120) formed on the battery module (110) and the support plate (130).
  • the battery module (110) may include a plurality of battery cells (112).
  • Each of the battery cells (112) may include an electrode assembly including a cathode and a negative electrode alternately and repeatedly stacked.
  • the cathode and the negative electrode may be alternately and repeatedly stacked with a separator interposed therebetween.
  • the cathode includes lithium metal oxide as a cathode active material, and the battery cell (112) may be provided as a lithium secondary battery.
  • a plurality of battery cells (112) each include a positive lead and a negative lead, and the positive leads and the negative leads can be joined to each other through a bus bar to define a battery module (110).
  • the battery module (110) can be fixed on the support plate (130).
  • a gap filler composition according to the above-described embodiments can be applied and cured between the battery module (110) and the support plate (130) to form a gap filler (120).
  • the battery module (110) can be stably fixed on the support plate (130) by the gap filler (120).
  • the gap filler (120) has stable curing characteristics and can have improved heat conduction characteristics.
  • the gap filler composition has a low specific gravity and can maintain a target hardness range for a predetermined time range. Accordingly, stable hardness characteristics can be maintained without impairing the overall electric vehicle process efficiency or increasing the weight of the battery pack.
  • the gap filler (120) may be provided as a thermally conductive layer.
  • the thermal conductivity of the gap filler (120) may be about 2.0 W/m ⁇ K or more.
  • the thermal conductivity of the gap filler (120) may be 2.20 W/m ⁇ K to 6.0 W/m ⁇ K, 2.20 W/m ⁇ K to 6.0 W/m ⁇ K, or 2.40 W/m ⁇ K to 5.0 W/m ⁇ K.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Une composition de matériau de remplissage selon des modes de réalisation de la présente invention comprend : une résine à base de siloxane ; une charge comprenant des particules inorganiques thermoconductrices, des particules creuses et des particules de graphite ; et un catalyseur. La résistance à l'écrasement des particules creuses est supérieure ou égale à 1 000 psi. L'invention concerne une composition de matériau de remplissage utilisant des particules creuses et des particules de graphite et ayant une faible densité spécifique, une conductivité thermique élevée et une stabilité de viscosité améliorée. L'invention concerne un bloc-batterie utilisant la composition de matériau de remplissage.
PCT/KR2024/020417 2023-12-22 2024-12-16 Composition de matériau de remplissage et bloc-batterie Pending WO2025135702A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020230190143A KR102689514B1 (ko) 2023-12-22 2023-12-22 갭 필러 조성물 및 배터리 팩
KR10-2023-0190143 2023-12-22

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WO2025135702A1 true WO2025135702A1 (fr) 2025-06-26

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KR102689514B1 (ko) * 2023-12-22 2024-07-29 동우 화인켐 주식회사 갭 필러 조성물 및 배터리 팩

Citations (5)

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KR20220043790A (ko) * 2020-09-29 2022-04-05 주식회사 엘지에너지솔루션 경화성 조성물 및 2액형 수지 조성물
KR20230046132A (ko) * 2021-09-29 2023-04-05 주식회사 엘지화학 경화성 조성물
JP2023050205A (ja) * 2021-09-29 2023-04-10 積水ポリマテック株式会社 熱伝導性組成物及び熱伝導性部材
KR102565124B1 (ko) * 2023-01-17 2023-08-11 동우 화인켐 주식회사 갭 필러 조성물 및 배터리 팩
KR102689514B1 (ko) * 2023-12-22 2024-07-29 동우 화인켐 주식회사 갭 필러 조성물 및 배터리 팩

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KR102402503B1 (ko) 2022-02-17 2022-05-26 주식회사 서연이화 갭필러 두께 가변 적용을 통한 배터리팩 냉각구조

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220043790A (ko) * 2020-09-29 2022-04-05 주식회사 엘지에너지솔루션 경화성 조성물 및 2액형 수지 조성물
KR20230046132A (ko) * 2021-09-29 2023-04-05 주식회사 엘지화학 경화성 조성물
JP2023050205A (ja) * 2021-09-29 2023-04-10 積水ポリマテック株式会社 熱伝導性組成物及び熱伝導性部材
KR102565124B1 (ko) * 2023-01-17 2023-08-11 동우 화인켐 주식회사 갭 필러 조성물 및 배터리 팩
KR102689514B1 (ko) * 2023-12-22 2024-07-29 동우 화인켐 주식회사 갭 필러 조성물 및 배터리 팩

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