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WO2019003673A1 - Composition de résine de polyester insaturée et appareil électrique l'utilisant - Google Patents

Composition de résine de polyester insaturée et appareil électrique l'utilisant Download PDF

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Publication number
WO2019003673A1
WO2019003673A1 PCT/JP2018/018655 JP2018018655W WO2019003673A1 WO 2019003673 A1 WO2019003673 A1 WO 2019003673A1 JP 2018018655 W JP2018018655 W JP 2018018655W WO 2019003673 A1 WO2019003673 A1 WO 2019003673A1
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WO
WIPO (PCT)
Prior art keywords
resin composition
unsaturated polyester
polyester resin
stator
meth
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.)
Ceased
Application number
PCT/JP2018/018655
Other languages
English (en)
Japanese (ja)
Inventor
孝仁 村木
孝行 小泉
松延　豊
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.)
Hitachi Astemo Ltd
Original Assignee
Hitachi Automotive Systems 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 Hitachi Automotive Systems Ltd filed Critical Hitachi Automotive Systems Ltd
Priority to CN201880043149.4A priority Critical patent/CN110892019B/zh
Publication of WO2019003673A1 publication Critical patent/WO2019003673A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/01—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to unsaturated polyesters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
    • C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
    • C08F290/06—Polymers provided for in subclass C08G
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • 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
    • C08L63/10—Epoxy resins modified by unsaturated compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/06—Unsaturated polyesters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/06—Insulation of windings
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure

Definitions

  • the present invention relates to an unsaturated polyester resin composition and an electrical device using the same.
  • Patent Document 1 discloses a main agent containing (A) epoxy resin and (B) inorganic filler, and (C) rubber modification Dicarboxylic acid resin, (D) curing accelerator, and (E) sulfur-free amine-based antioxidant, phenol-based antioxidant, organic thioic acid-based antioxidant, phosphorous acid-based antioxidant, A resin composition for coil impregnation is disclosed, which comprises a curing agent containing at least one or more antioxidants selected from the group consisting of wax-based antioxidants.
  • modified rubber particles are added to the coil impregnating resin composition, but when rubber particles are added to the resin composition (varnish) before curing, it is exclusively used to obtain good dispersibility. A mixer is required. In addition, when rubber particles are added to the resin composition, the viscosity tends to be high, and the workability is deteriorated. Therefore, further improvement is desired from the viewpoint of productivity.
  • An object of the present invention is to provide an unsaturated polyester resin composition which achieves both high thermal shock resistance and productivity, and an electric device using the same.
  • the present invention is characterized by comprising a polyrotaxane and at least one of an unsaturated polyester resin and a vinyl ester resin, a vinyl monomer having at least one of a hydroxyl group and an ether group.
  • An unsaturated polyester resin composition is provided.
  • the present invention also provides an electrical device comprising the above-described unsaturated polyester resin composition of the present invention.
  • an unsaturated polyester resin composition having both high thermal shock resistance and productivity and an electrical device using the same.
  • the unsaturated polyester resin composition (Hereinafter, only the "resin composition” is called.) which has the following composition. That is, it contains at least one of an unsaturated polyester resin and a vinyl ester resin (component (A)), at least one of a vinyl monomer having a hydroxyl group and an ether group (component (B)) and a polyrotaxane (C) .
  • the component (B) is added to the component (A) which is a thermosetting resin in order to dissolve the component (C) having an effect of improving the thermal shock resistance.
  • the cured product of the resin composition of the present invention described above has a structure in which the crosslinked structure formed of the component (A) and the component (B) contains the component (C). By containing the component (C), it exhibits extremely excellent thermal shock resistance.
  • the component (B) dissolves the component (C) in the component (A)
  • the viewpoint of the dispersibility and viscosity of the resin composition as compared with the resin composition to which the rubber particles are added as in Patent Document 1 mentioned above. Can be improved and productivity can be improved.
  • JP-A-2014-118481 discloses an elastomer containing polyrotaxane as a polymer material containing a rotaxane compound, but a polymer solution is prepared by dissolving in a solvent (methyl ethyl ketone). When such a solvent is used, the solvent may be volatilized during curing of the resin composition, and as a result, a void may be generated in the cured product.
  • Component (A) (Thermosetting resin):
  • the unsaturated polyester resin constituting at least one component (A) of the unsaturated polyester resin and the vinyl ester resin is not particularly limited.
  • a product obtained by condensation reaction of a dibasic acid and a polyhydric alcohol can be used.
  • dibasic acids used as raw materials for unsaturated polyester resins include ⁇ , ⁇ -unsaturated dibasic acids (maleic acid, maleic anhydride, fumaric acid, itaconic acid, itaconic acid, etc.) and saturated dibasic acids Phthalic acid, phthalic anhydride, halogenated phthalic acid, isophthalic acid, terephthalic acid, tetrahydrophthalic acid, tetrahydrophthalic anhydride, hexahydrophthalic acid, hexahydroisophthalic acid, hexahydroterephthalic acid, succinic acid, malonic acid, glutar Acid, adipic acid, sebacic acid, 1,10-decanedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 2,3-naphthalenedicarboxylic acid, 2,3-naphthalenedicarboxylic acid anhydride,
  • polyhydric alcohols used as a raw material of unsaturated polyester resin ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, 2-methyl-1,3-propanediol, 1 3-butanediol, adduct of bisphenol A and propylene oxide or ethylene oxide, glycerin, trimethylolpropane, 1,3-propanediol, 1,2-cyclohexane glycol, 1,3-cyclohexane glycol, 1,4-cyclohexane Glycol, paraxylene glycol, bicyclohexyl-4,4'-diol, 2,6-decalin glycol and tris (2-hydroxyethyl) isocyanurate It can be used. However, it is not particularly limited to these compounds. In addition, amino alcohols such as ethanolamine may be used. Only one type of these polyhydric alcohols may be used,
  • Vinyl ester resins are synthesized by the ring-opening addition reaction of an epoxy resin and an unsaturated monobasic acid.
  • an epoxy compound used as a raw material of vinyl ester resin a compound having at least two epoxy groups in the molecule is used.
  • epoxy compounds include epibis-type glycidyl ether type epoxy resins obtained by condensation reaction of bisphenols such as bisphenol A, bisphenol F and bisphenol S with epihalohydrin, and phenols such as phenol, cresol and bisphenol Type novolak type glycidyl ether type epoxy resin obtained by condensation reaction of novolak, which is a condensation product of epoxy and formalin, with epihalohydrin, glycidyl ester type epoxy resin obtained by condensation reaction of tetrahydrophthalic acid and hexahydrophthalic acid with epihalohydrin, 4,4'-biphenol, 2,6-naphthalenediol, glycidyl ether type obtained by condensation reaction of hydrogenated bisphenol or glycol with epihalohydrin
  • unsaturated monobasic acid used as a raw material of vinyl ester resin acrylic acid, methacrylic acid, crotonic acid etc. can be used, for example.
  • half esters such as maleic acid and itaconic acid may be used.
  • unsaturated monobasic acids may be used alone or in combination of two or more.
  • a vinyl ester resin obtained by reacting an epi-bis-type glycidyl ether type epoxy resin with methacrylic acid is preferable from the viewpoint of heat resistance and curability.
  • non-novolak type vinyl ester resins are preferable from the viewpoint of the crack resistance of the cured product.
  • the unsaturated polyester resin and the vinyl ester resin are equivalent from the viewpoint of improving the thermal shock resistance, but from the viewpoint of hydrolysis resistance, the vinyl ester resin is more preferable.
  • Component (B) The vinyl monomer component (B) having at least one of a hydroxyl group and an ether group has an alkyl group having a hydroxyl group or a hydroxyl group or an aryl group on an aromatic ring such as hydroxystyrene or hydroxymethylstyrene.
  • Styrenes alkyl groups having an alkoxy group or alkoxy group on the aromatic ring of styrene such as methoxystyrene or methoxymethylstyrene, styrenes having an aryl group, hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, glycerol mono (Meth) acrylates having hydroxyl groups such as (meth) acrylates, and (meth) acrylates having ether groups such as methoxyethyl (meth) acrylates, ethoxyethyl (meth) acrylates, and methoxyethoxyethyl (meth) acrylates And (meth) acrylates having a hydroxyl group and an ether group such as hydroxyethoxyethyl (meth) acrylate. These compounds may be used alone or in combination of two or more. Among these, (meth) acrylates are more preferable from the viewpoint
  • the component (B) dissolves the component (C) (polyrotaxane) described later in the component (A).
  • component (C) polyrotaxane
  • vinyl monomers having a hydroxyl group are more preferable than vinyl monomers having an ether group.
  • the amount of component (B) added is preferably at least the same as that of component (C). When the amount of the component (B) added is smaller than that of the component (C), it becomes difficult to dissolve the component (C) in the component (A).
  • FIG. 1 is a schematic view showing an example of a polyrotaxane contained in the resin composition of the present invention.
  • the resin composition of the present invention has a structure in which the linear molecule 101 penetrates the opening of at least two or more cyclic compounds 100 as shown in FIG. 1, and the linear molecule 101 is not separated.
  • a compound having a structure having a blocking group 102 at the end is used as the component (C).
  • the component (C) having such a structure can exhibit excellent thermal shock resistance. This structure can be confirmed by analysis by NMR (Nuclear Magnetic Resonance).
  • the components and types of the cyclic compound 100, the linear molecule 101 and the block group 102, the inclusion ratio of the cyclic compound, the production method and the like are not limited.
  • Examples of the cyclic compound 100 include cyclodextrins such as ⁇ -cyclodextrin and ⁇ -cyclodextrin, crown ethers such as 18C6 and 15C5, calixarenes, and pilarenes.
  • cyclodextrins such as ⁇ -cyclodextrin and ⁇ -cyclodextrin
  • crown ethers such as 18C6 and 15C5, calixarenes, and pilarenes.
  • the linear molecule 101 polyethylene oxide, polyethylene glycol, polypropylene glycol, polyvinyl alcohol, polyolefin, polyester and the like can be mentioned.
  • the end block group 102 it is sufficient if it has such a size that the linear molecule 101 does not escape, and an adamantyl group, a trityl group or the like is used.
  • the addition amount of the component (C) according to the present invention is preferably 0.5 parts by mass to 10 parts by mass, and further 1 part by mass to 5 parts by mass with respect to 100 parts by mass of the resin composition including other optional components. preferable.
  • the amount is less than 0.5 parts by mass, the improvement of the thermal shock resistance is not observed, and when the amount is more than 10 parts by mass, the electrical characteristics are deteriorated.
  • the resin composition described above may be added with other optional components other than the components (A), (B) and (C) as necessary.
  • the optional components include (i) a radically polymerizable monomer, (ii) a polymerization initiator, (iii) a curing accelerator, (iv) a polymerization inhibitor, and (v) an adhesion improver.
  • Radical polymerizable monomers include styrene, vinyl toluene, vinyl naphthalene, ⁇ -methyl styrene, vinyl pyrrolidone, acrylamide, acrylonitrile, allyl alcohol, allyl phenyl ether, (meth) acrylate, vinyl acetate, vinyl pyrrolidone And (meth) acrylamides, diesters of maleic acid and diesters of fumaric acid.
  • styrene vinyl toluene, vinyl naphthalene, ⁇ -methyl styrene, vinyl pyrrolidone, acrylamide, acrylonitrile, allyl alcohol, allyl phenyl ether, (meth) acrylate, vinyl acetate, vinyl pyrrolidone And (meth) acrylamides, diesters of maleic acid and diesters of fumaric acid.
  • (meth) acrylic acid ester for example, methacrylate, acrylate
  • (meth) acrylic acid esters include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isooctyl (meth) acrylate and isodecyl (Meth) acrylate, benzyl (meth) acrylate, phenyl (meth) acrylate, cyclohexyl (meth) acrylate, dicyclopentanyl (meth) acrylate, dicyclopentenyl (meth) acrylate, isobornyl (meth) acrylate, methoxylated cyclotriene (Meth) acrylate,
  • the polymerization initiator is benzoyl peroxide, lauroyl peroxide, t-butyl peroxide, t-amyl peroxide, t-amyl peroxy neodecanoate, t-butyl peroxy neodecano Aate, t-Amyl peroxyisobutyrate, di (t-butyl) peroxide, dicumyl peroxide, cumene hydroperoxide, 1, 1-di (t-butyl peroxy) cyclohexane, 2, 2- di (t -Butyl peroxy) butane, t-butyl hydroperoxide, di (s-butyl) peroxy carbonate, methyl ethyl ketone peroxide and the like can be used.
  • These compounds may be used alone or in combination of two or more.
  • a compound having a half-hour temperature in the range of 100 ° C. to 150 ° C. such as 1,1-di (t-butylperoxy) cyclohexane, is desirable from the viewpoint of curing temperature.
  • the curing accelerator includes metal salts of naphthenic acid or octylic acid (metal salts such as cobalt, zinc, zirconium, manganese and calcium). These may use only one type and may mix 2 or more types suitably.
  • Examples of the polymerization inhibitor include quinones such as hydroquinone, para-tert-butyl catechol and pyrogallol. These may use only one type and may mix 2 or more types suitably.
  • adhesion improver examples include p-styryltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyltriethoxysilane and the like. These may use only one type and may mix 2 or more types suitably.
  • the components (A) to (C) contained in the resin composition can be confirmed by analysis by NMR or IR (Infrared Spectroscopy).
  • the components (A) to (C) contained in the cured product after curing can also be confirmed by analysis by NMR or IR.
  • the resin composition of the present invention is produced by uniformly stirring and mixing the components (A) to (C) and other optional components described above in air.
  • the resin composition of the present invention can be applied to adhesion and insulation of parts of electrical devices. For example, it can be used for insulation and fixing applications of a stator winding of a rotating electrical machine.
  • the “axial direction” refers to the direction along the rotation axis of the rotating electrical machine.
  • the “circumferential direction” refers to a direction along the rotation direction of the rotating electrical machine.
  • the “radial direction” refers to a radial direction (radial direction) around the rotation axis of the rotating electrical machine.
  • the “inner circumferential side” refers to the radially inner side (inner diameter side), and the “outer circumferential side” refers to the opposite direction, that is, the radially outer side (outer diameter side).
  • FIG. 2 is a schematic cross-sectional view showing an example of an electrical device using the unsaturated polyester resin composition of the present invention
  • FIG. 3 is a weld side coil end of a stator coil constituting the electrical device of FIG. It is a schematic diagram which expands "before application.”
  • the stator 20 is fixed to the inner peripheral side of the housing 50.
  • the rotor 11 is rotatably supported on the inner peripheral side of the stator 20.
  • the housing 50 constitutes an outer cover of a motor which is formed into a cylindrical shape by cutting an iron-based material such as carbon steel, or by casting a cast steel or an aluminum alloy, or by pressing.
  • the housing 50 is also referred to as a frame or a frame.
  • a liquid cooling jacket 130 is fixed to the outer peripheral side of the housing 50.
  • a refrigerant passage 153 for a liquid refrigerant RF such as oil is formed by the inner peripheral wall of the liquid cooling jacket 130 and the outer peripheral wall of the housing 50.
  • the refrigerant passage 153 is configured to prevent liquid leakage.
  • the liquid cooling jacket 130 accommodates the bearings 144 and 145, and is also referred to as a "bearing bracket".
  • the refrigerant RF flows through the refrigerant passage 153 and flows out from the refrigerant outlets 154 and 155 toward the stator 20 to cool the stator 20.
  • the stator 20 includes anti-welding side coil ends 61 and welding side coil ends 62 at both ends, and the welding side coil ends 62 include a coil end 200, a slot liner 201, a weld portion covering resin 202 and an insulating paper 203. Is equipped. The configuration of the stator 20 will be described in detail later.
  • the rotor 11 includes a rotor core 12 and a rotating shaft 13. Similar to the stator core 21, the rotor core 12 is configured by laminating thin plates (for example, silicon steel plates).
  • the rotating shaft 13 is fixed to the center of the rotor core 12.
  • the rotating shaft 13 is rotatably held by bearings 144 and 145 attached to the liquid cooling jacket 130, and rotates at a predetermined position in the stator 20 at a position facing the stator 20.
  • the rotor 11 is also provided with a permanent magnet 18 and an end ring (not shown).
  • stator 20 is inserted into the inside of the housing 50 and attached to the inner peripheral wall of the housing 50, and then the rotor 11 is inserted into the stator 20.
  • the bearings 144 and 145 are fitted to the rotary shaft 13 and assembled to the liquid cooling jacket 130.
  • the stator 20 includes a stator core 21, a plurality of slots 15 provided on the inner peripheral portion of the stator core 21, and a stator coil 60 wound around the slot 15.
  • the stator core 21 is configured by laminating thin plates (for example, silicon steel plates).
  • the stator coils 60 are wound around slots 15 provided in large numbers on the inner peripheral portion of the stator core 21.
  • Insulating paper 300 is annularly disposed between stator coils 60 for insulation between stator coils 60.
  • Insulating paper 300 is annularly disposed between the welds for insulation between the welds.
  • the welds are coated with insulation by an appropriate method.
  • As the stator coil 60 a conductor (a copper wire in the present embodiment) having a substantially rectangular cross section is used. By using a coil conductor having a rectangular cross section, the space factor in the slot is improved, and the efficiency of the rotating electrical machine is improved.
  • a slot liner 301 is disposed in each of the slots 15 to ensure electrical insulation between the stator core 21 and the stator coil 60.
  • the slot liner 301 is formed in a B-shape or an S-shape so as to wrap the copper wire. Heat generated from the stator coil 60 is transferred to the housing 50 through the stator core 21 and dissipated by the refrigerant RF flowing in the liquid cooling jacket 130.
  • the electric device of the present invention covers the stator coil 60 described above with the cured product of the resin composition for electric device insulation of the present invention.
  • limiting in particular as a coating method, A dip coating, a drop impregnation method, etc. are applicable.
  • the resin composition applied to the stator 20 is completely cured by heating.
  • limiting in particular also in a heating method A warm-air-type heating furnace, IH (Induction Heating) heating furnace, etc. are applicable.
  • the electric device provided with the resin composition of the present invention is excellent in thermal shock resistance and productivity.
  • A-1) Unsaturated polyester resin Unsaturated polyester resin containing isophthalic acid as a carboxylic acid component
  • A-2) Vinyl ester resin (bisphenol A type vinyl ester resin) Bisphenol A glycerolate dimethacrylate (manufactured by Aldrich)
  • A-3) Vinyl ester resin WP-2008 (manufactured by Hitachi Chemical Co., Ltd.)
  • B-1) Vinyl monomer having hydroxyl group 2-hydroxyethyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.)
  • B-2) Vinyl monomer ((meth) acrylate) having an ether group Methoxyethyl methacrylate (Tokyo Chemical Industry Co., Ltd.)
  • C Polyrotaxane Cerm Super Polymer A 1000 (manufactured by Advanced Soft Materials Co., Ltd.)
  • i) Radically polymerizable monomer
  • i-1) Dicyclopentenyloxyethyl (meth)
  • FIG. 3 is a schematic view of a bifilar coil.
  • 1 ⁇ 1 AIW enameled wire manufactured by Hitachi Metals, Ltd.
  • the bifilar coil was produced by holding two enameled wires, winding it around a jig with a distance of 100 mm between fulcrums five times, and twisting it twice.
  • the coil was immersed horizontally in the resin composition of Examples 1 to 8 and Comparative Examples 1 to 7 described above, and left for 15 minutes. Then, it heated at 130 degreeC for 30 minutes using a warm air circulation type thermostat. After cooling, the upside down was inverted, and the resin was further impregnated for 15 minutes, and then heated at 130 ° C. for 60 minutes to prepare a test piece.
  • thermal shock resistance a small thermal shock tester (product name: TSE-11-A, manufactured by ESPEC Corp.) was used. The test specimen was subjected to a thermal shock test of 1,500 cycles at a low temperature of -60 ° C. and a high temperature of 180 ° C. using TSE-11-A manufactured by ESPEC.
  • test pieces prepared using the resin compositions shown in Examples 1 to 8 showed no generation of cracks after the above-described test.
  • the test pieces prepared using the resin compositions shown in Comparative Examples 1 to 7 generation of cracks was observed in all the test pieces after the above-described test.
  • Comparative Examples 1 to 4 and Comparative Example 6 the components (B) and (C) were not added in Examples 1 to 4 and Example 6, respectively. In the case where the component (C) was not included, cracks were generated in all of Comparative Examples 1 to 4 and Comparative Example 6 because the thermal shock resistance was low.
  • Comparative Example 5 the component (C) was not added in Example 5. From the results of Comparative Example 5 and Example 5, it was found that even when the component (B) was added, the thermal shock resistance could not be improved when the component (C) was not added.
  • Comparative Example 7 was the one in which the component (C) was added without the addition of the component (B), but the component (C) was not uniformly mixed with the component (A), and a uniform solution could not be obtained. . As a result, the distribution of the component (C) in the obtained cured product is not uniform, and it is considered that a crack has occurred.
  • an electrical device insulating resin composition and an electrical device capable of providing an electrical device excellent in thermal shock resistance can be provided.
  • the present invention is not limited to the embodiments described above, but includes various modifications.
  • the embodiments described above are described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described.
  • the rotor is not a permanent magnet type but can be applied to an induction type, synchronous reluctance, claw pole type, etc. is there.
  • the winding method is a wave winding method, any winding method having similar characteristics is applicable.
  • the explanation is made with the inner rotation type, the present invention is similarly applicable to the outer rotation type.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Insulating Of Coils (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polymerisation Methods In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

La présente invention concerne : une composition de résine de polyester insaturée qui présente une résistance élevée aux chocs thermiques et une productivité élevée ; et un appareil électrique utilisant ladite composition. Cette composition de résine de polyester insaturée est caractérisée en ce qu'elle comprend : une résine de polyester insaturée et/ou une résine d'ester de vinyle ; un monomère de vinyle ayant un groupe hydroxyle et/ou un groupe éther ; et un polyrotaxane.
PCT/JP2018/018655 2017-06-27 2018-05-15 Composition de résine de polyester insaturée et appareil électrique l'utilisant Ceased WO2019003673A1 (fr)

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Application Number Priority Date Filing Date Title
CN201880043149.4A CN110892019B (zh) 2017-06-27 2018-05-15 不饱和聚酯树脂组合物及使用其的电气设备

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JP2017124726A JP6918601B2 (ja) 2017-06-27 2017-06-27 電機機器用樹脂組成物及びそれを用いた電気機器
JP2017-124726 2017-06-27

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