WO2025134785A1 - 熱硬化性樹脂組成物およびステータ - Google Patents

熱硬化性樹脂組成物およびステータ Download PDF

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Publication number
WO2025134785A1
WO2025134785A1 PCT/JP2024/043041 JP2024043041W WO2025134785A1 WO 2025134785 A1 WO2025134785 A1 WO 2025134785A1 JP 2024043041 W JP2024043041 W JP 2024043041W WO 2025134785 A1 WO2025134785 A1 WO 2025134785A1
Authority
WO
WIPO (PCT)
Prior art keywords
resin composition
thermosetting resin
resin
type epoxy
composition according
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/JP2024/043041
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
隼 山本
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.)
Sumitomo Bakelite Co Ltd
Original Assignee
Sumitomo Bakelite 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 Sumitomo Bakelite Co Ltd filed Critical Sumitomo Bakelite Co Ltd
Priority to JP2025524347A priority Critical patent/JPWO2025134785A1/ja
Publication of WO2025134785A1 publication Critical patent/WO2025134785A1/ja
Priority to JP2025272598A priority patent/JP2026053520A/ja
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
    • 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
    • C08K3/34—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
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation

Definitions

  • the present invention relates to a thermosetting resin composition and a stator.
  • Patent Document 1 JP Patent Publication No. 2003-284277 describes a technology for using a resin material in a stator core.
  • the document describes a rotating electric machine having a stator in which multiple coils are wound at regular intervals around a stator core made of multiple laminated electromagnetic steel sheets, a rotor that is rotatably held relative to the stator, and a cooling frame to which the stator is fixed, in which a highly heat-conductive composite material made of a thermosetting resin with an anisotropic structure in the resin component is placed in the slots that form the winding portion of the stator. It is said that this configuration provides a rotating electric machine with good heat dissipation properties, as it easily transfers heat generated by the coils.
  • thermosetting resin composition used to form the sealing member
  • the thermosetting resin composition comprises: Epoxy resin, A hardener; and an inorganic filler,
  • the thermosetting resin composition wherein the inorganic filler has a particle size distribution in which D90 is 40 ⁇ m or more and 70 ⁇ m or less, and D10 is 0.1 ⁇ m or more and 1.0 ⁇ m or less.
  • thermosetting resin composition according to ⁇ 1> wherein the ratio D90/D10 of the D90 to the D10 in the particle size distribution is 100 or more and 300 or less.
  • thermosetting resin composition according to ⁇ 1> or ⁇ 2> wherein the ratio D90/D50 of the D90 to D50 in the particle size distribution is 4 or more and 8 or less.
  • thermosetting resin composition according to any one of ⁇ 1> to ⁇ 4>, wherein the inorganic filler includes at least one selected from the group consisting of alumina, fused silica, and crystalline silica.
  • the inorganic filler includes at least one selected from the group consisting of alumina, fused silica, and crystalline silica.
  • the inorganic filler contains 60 mass% or more of alumina with respect to the entire thermosetting resin composition.
  • ⁇ 7> ⁇ 6> The thermosetting resin composition according to any one of ⁇ 1> to ⁇ 6>, wherein the gel time is 40 seconds or more and 100 seconds or less.
  • thermosetting resin composition according to any one of ⁇ 1> to ⁇ 7>, wherein the thermal conductivity of a cured product of the thermosetting resin composition is 3.2 W / mK or more.
  • the epoxy resin includes at least one selected from the group consisting of a biphenyl-type epoxy resin, a bisphenol-type epoxy resin, a stilbene-type epoxy resin, a novolac-type epoxy resin, a multifunctional epoxy resin, a phenol aralkyl-type epoxy resin, and a naphthol-type epoxy resin.
  • thermosetting resin composition according to any one of ⁇ 1> to ⁇ 9>, having a glass transition point of 175° C. or higher.
  • a stator having a stator core having a plurality of teeth and a plurality of slots alternately arranged in a circumferential direction, a coil wound around the slot and housed in the slot, and a sealing member provided in the slot to seal the coil, The stator, wherein the sealing member is made of a cured product of the thermosetting resin composition according to any one of ⁇ 1> to ⁇ 10>.
  • the present invention provides a technology that achieves both insulation and filling between the coils when placing a coil in a slot and filling the space between the stator and the coil with a resin composition.
  • FIG. 2 is a cross-sectional view taken along a direction perpendicular to the rotation axis of the motor.
  • FIG. 2 is a vertical cross-sectional view of the motor in the direction of the rotation axis.
  • FIG. 2 is an enlarged view of the periphery of a slot.
  • FIG. 4 is a cross-sectional view showing the inside of a slot.
  • a technology is provided that achieves both insulation and filling between coils by specifying the particle size distribution (D90, D10, etc.) of an inorganic filler contained in a thermosetting resin composition used to form a sealing member that seals a coil in a slot in a stator of a rotating electric machine such as a motor.
  • Fig. 1 is a schematic cross-sectional view perpendicular to the rotational axis direction of motor 100.
  • Fig. 2 is a schematic cross-sectional view in the rotational axis direction of motor 100.
  • Fig. 3 is an enlarged view of the periphery of the slot (area X in Fig. 1), and is a schematic cross-sectional view of a portion where coil 9 protrudes from the end of slot 8.
  • Fig. 4 is a diagram showing the inside of slot 8, and is a cross-sectional view taken along line A-A in Fig. 3.
  • the content of the thermosetting resin (A) is preferably 1% by mass or more, and more preferably 3% by mass or more, based on the total amount of the resin composition of the resin sealing portion 65.
  • the content is preferably 10% by mass or less, and more preferably 5% by mass or less, based on the total amount of the resin composition of the resin sealing portion 65.
  • the content of the curing catalyst (C-1) is not particularly limited, but is preferably 0.001% by mass or more and 1% by mass or less based on the total amount of the resin composition.
  • the coupling agent (D) is not particularly limited, but it is preferable to use, for example, one or more coupling agents selected from epoxy silane coupling agents, cationic silane coupling agents, amino silane coupling agents, titanate-based coupling agents, and silicone oil-type coupling agents.
  • the content of the coupling agent (D) is not particularly limited, but is preferably 0.05% by mass or more, and more preferably 0.1% by mass or more, relative to 100% by mass of the filler (B).
  • the content is preferably 3% by mass or less, and more preferably 2% by mass or less, relative to 100% by mass of the filler (B).

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
PCT/JP2024/043041 2023-12-19 2024-12-05 熱硬化性樹脂組成物およびステータ Pending WO2025134785A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2025524347A JPWO2025134785A1 (https=) 2023-12-19 2024-12-05
JP2025272598A JP2026053520A (ja) 2023-12-19 2025-12-22 熱硬化性樹脂組成物およびステータ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023213558 2023-12-19
JP2023-213558 2023-12-19

Publications (1)

Publication Number Publication Date
WO2025134785A1 true WO2025134785A1 (ja) 2025-06-26

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PCT/JP2024/043041 Pending WO2025134785A1 (ja) 2023-12-19 2024-12-05 熱硬化性樹脂組成物およびステータ

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JP (2) JPWO2025134785A1 (https=)
WO (1) WO2025134785A1 (https=)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017199639A1 (ja) * 2016-05-18 2017-11-23 住友ベークライト株式会社 Ｌｄｓ用熱硬化性樹脂組成物、樹脂成形品および三次元成形回路部品
JP2020183505A (ja) * 2019-05-07 2020-11-12 長春人造樹脂廠股▲分▼有限公司 樹脂組成物及びその使用
WO2021200490A1 (ja) * 2020-03-31 2021-10-07 デンカ株式会社 アルミナ粉末、樹脂組成物、及び放熱部品
WO2022255226A1 (ja) * 2021-06-04 2022-12-08 住友化学株式会社 アルミナ粒子およびそれを用いた樹脂組成物
WO2023085357A1 (ja) * 2021-11-11 2023-05-19 住友ベークライト株式会社 熱硬化性樹脂組成物およびステータ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017199639A1 (ja) * 2016-05-18 2017-11-23 住友ベークライト株式会社 Ｌｄｓ用熱硬化性樹脂組成物、樹脂成形品および三次元成形回路部品
JP2020183505A (ja) * 2019-05-07 2020-11-12 長春人造樹脂廠股▲分▼有限公司 樹脂組成物及びその使用
WO2021200490A1 (ja) * 2020-03-31 2021-10-07 デンカ株式会社 アルミナ粉末、樹脂組成物、及び放熱部品
WO2022255226A1 (ja) * 2021-06-04 2022-12-08 住友化学株式会社 アルミナ粒子およびそれを用いた樹脂組成物
WO2023085357A1 (ja) * 2021-11-11 2023-05-19 住友ベークライト株式会社 熱硬化性樹脂組成物およびステータ

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JP2026053520A (ja) 2026-03-25

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