WO2013146531A1 - 多層絶縁電線及びそれを用いた電気・電子機器 - Google Patents
多層絶縁電線及びそれを用いた電気・電子機器 Download PDFInfo
- Publication number
- WO2013146531A1 WO2013146531A1 PCT/JP2013/058080 JP2013058080W WO2013146531A1 WO 2013146531 A1 WO2013146531 A1 WO 2013146531A1 JP 2013058080 W JP2013058080 W JP 2013058080W WO 2013146531 A1 WO2013146531 A1 WO 2013146531A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- resin
- insulated wire
- multilayer insulated
- mpa
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
- H01B3/421—Polyesters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0225—Three or more layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
- H01B3/305—Polyamides or polyesteramides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
- H01B3/421—Polyesters
- H01B3/422—Linear saturated polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
- H01F27/2823—Wires
-
- 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
- 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
- H02K3/30—Windings characterised by the insulating material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
- H01B3/445—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds from vinylfluorides or other fluoroethylenic compounds
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2933—Coated or with bond, impregnation or core
- Y10T428/2964—Artificial fiber or filament
- Y10T428/2967—Synthetic resin or polymer
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2933—Coated or with bond, impregnation or core
- Y10T428/2964—Artificial fiber or filament
- Y10T428/2967—Synthetic resin or polymer
- Y10T428/2969—Polyamide, polyimide or polyester
Definitions
- the present invention relates to a multilayer insulated wire having an extruded covering layer having at least two insulating layers and an electric / electronic device using the same.
- the structure of the transformer is described in the IEC standard (International Electrotechnical Communication Standard) Pub. 60950 and the like. That is, in these standards, at least three insulating layers (the enamel film covering the conductor is not recognized as an insulating layer) are formed between the primary winding and the secondary winding in the winding or the insulation.
- the thickness of the layer is 0.4 mm or more, and the creepage distance between the primary winding and the secondary winding is 5 mm or more, and 3000 V is applied to the primary side and the secondary side, depending on the applied voltage. It is sometimes prescribed that it can withstand more than 1 minute.
- an enamel-coated primary winding 4 is wound in a state in which insulating barriers 3 for securing a creeping distance are disposed at both ends of the peripheral surface of the bobbin 2 on the ferrite core 1. Further, an insulating tape 5 is wound on the primary winding 4 in at least three layers, and an insulating barrier 3 for securing a creepage distance is further disposed on the insulating tape, and then the enamel-coated secondary is also provided.
- the winding 6 has a wound structure.
- an insulating tape is wound around the outer periphery of the conductor to form a first insulating layer, and further, an insulating tape is wound thereon to form a second insulating layer.
- a third insulating layer is sequentially formed to form an insulating layer having a three-layer structure in which the layers are separated from each other (see, for example, Patent Document 1).
- the winding work is unavoidable, so the productivity is remarkably low, and the wire cost is very high.
- a modified polyester resin or polyester elastomer that controls crystallization and suppresses a decrease in molecular weight as the first and second insulating layers is extruded on the outer periphery of the conductor to form a third insulating layer.
- Multi-layer insulated wires coated with polyamide resin by extrusion have been put to practical use (see, for example, Patent Documents 2 and 3).
- the inner layer is polyethersulfone resin and the outermost layer is polyamide resin.
- Patent Document 4 has been proposed (see, for example, Patent Document 4). *
- the above-mentioned multilayer insulated wire is an IEC standard Pub. In accordance with 60950, it has been applied to electrical and electronic equipment. Multi-layer insulated wires that enable miniaturization and high efficiency are IEC standards Pub. Development to household appliances based on 61558 is also desired. Therefore, the IEC standard Pub. There is a need for a multilayer insulated wire that can comply with 61558. *
- the coating resin used for the conventional multilayer insulated wire cannot achieve the voltage level required by the IEC standard. This is because the conventional coating resin causes thermal aging of the resin by applying a thermal shock in the test, resulting in a decrease in mechanical strength and a crack due to heat stress. Therefore, in order to achieve the voltage standard, it is necessary to satisfy both heat resistance and voltage resistance characteristics (also referred to as electrical characteristics) of the multilayer insulated wire.
- the present invention achieves both heat resistance and withstand voltage characteristics, and as described above, the IEC standard Pub. It is an object of the present invention to provide a multilayer insulated wire that satisfies 61558. Furthermore, an object of the present invention is to provide a highly reliable electric / electronic device such as a transformer formed by winding an insulated wire having excellent withstand voltage characteristics.
- the resin forming the insulating layer other than the outermost layer is a polyester resin, and the repeating unit of the diol component constituting the polyester resin is — [O— (L 1 —O) m ] — L 1 represents an alkylene group, and m represents an integer of 1 or more)
- An electrical / electronic device characterized by using the multilayer insulated wire according to any one of (1) to (4) as a winding or a lead wire of a transformer incorporated in the electrical / electronic device.
- the multilayer insulated wire of the present invention has an IEC standard Pub., which is required for household appliances while maintaining a heat resistance level of heat resistance type B (UL 1446) or higher. It has a withstand voltage characteristic that satisfies 61558.
- a resin material having a tensile elastic modulus at 25 ° C. of 1000 MPa or more is used as an outermost layer, and an inner layer has a melting point of 200 ° C. or higher and a tensile elastic modulus at 25 ° C. of 1000 MPa or lower.
- the extrusion coating layer is composed of at least two layers, preferably three layers, and a preferred embodiment of the resin forming each layer will be described.
- At least one of the inner layers (insulating layers other than the outermost layer) of the multilayer insulated wire of the present invention is formed of an extruded coating layer formed of a resin having a melting point of 200 ° C. or higher and a tensile elastic modulus of 1000 MPa or lower at 25 ° C.
- a resin having a melting point of less than 200 ° C. is not suitable as a coating layer because the required heat resistance cannot be obtained.
- a preferred melting point is 225 ° C or higher.
- the tensile modulus at 25 ° C. is preferably 900 MPa or less.
- the lower limit of the tensile modulus at 25 ° C. is not particularly limited, but is practically 250 MPa or more. If a resin having a tensile modulus at 25 ° C. exceeding 1000 MPa is used, heat aging may easily occur in the resin constituting the coating layer. When heat aging occurs, the mechanical strength of the resin decreases, and cracks due to heat stress occur, so the withstand voltage characteristics of the multilayer insulated wire may decrease.
- the other inner layer is preferably made of a resin having a melting point of 200 ° C. or higher.
- examples of the crystalline resin having a melting point of 200 ° C. or more and a tensile modulus of elasticity of 1000 MPa or less at 25 ° C. include fluorine-based resins.
- Specific examples of the fluororesin include ETFE (ethylene-tetrafluoroethylene copolymer), PFA (tetrafluoroethylene and perfluoroalkoxyethylene copolymer), and the like.
- a polyester resin is preferably exemplified.
- the polyester resin is a repeating unit obtained from a diol component constituting the polyester resin.
- -[O- (L 1 -O) m ]- (L 1 represents an alkylene group, and m represents an integer of 1 or more) It is more preferable that the total number of carbon atoms of all L 1 in one repeating unit is 4 or more.
- L 1 is preferably an alkylene group having 4 or more carbon atoms, and m is preferably an integer of 1 or more.
- L 1 is an alkylene group having 4 to 8 carbon atoms, and m is 1 or 2.
- the most preferable example of the crystalline resin having a melting point of 200 ° C. or more and a tensile modulus of elasticity of 1000 MPa or less at 25 ° C. includes a polyester elastomer.
- the polyester elastomer is a copolymer having a hard segment and a soft segment.
- the “hard segment” is a polyester segment having a main acid component of a dicarboxylic acid component in which an aromatic dicarboxylic acid component or a part thereof is substituted with an aliphatic dicarboxylic acid
- the “soft segment” It is a polyester segment comprising a polyether obtained by polymerization of an aliphatic diol as a polyol component.
- the aromatic dicarboxylic acid component constituting the hard segment is preferably a terephthalic acid component or a naphthalenedicarboxylic acid component.
- Other acid components include aromatic dicarboxylic acids such as diphenyldicarboxylic acid, isophthalic acid and 5-sodiumsulfoisophthalic acid, alicyclic dicarboxylic acid components such as cyclohexanedicarboxylic acid and tetrahydrophthalic anhydride, succinic acid, glutar And aliphatic dicarboxylic acid components such as acid, adipic acid, azelaic acid, sebacic acid, dodecanedioic acid, dimer acid, and hydrogenated dimer acid.
- aromatic dicarboxylic acids such as diphenyldicarboxylic acid, isophthalic acid and 5-sodiumsulfoisophthalic acid
- alicyclic dicarboxylic acid components such as cyclohexanedicar
- the aliphatic or alicyclic diol component constituting the hard segment is a component mainly composed of alkylene glycols having 2 to 8 carbon atoms. Specific examples thereof include ethylene glycol, 1,3-propylene glycol, 1,4-butanediol, 1,6-hexanediol, 1,4-cyclohexanedimethanol and the like. Of these, a 1,4-butanediol component and a 1,6-hexanediol component having 4 or more carbon atoms are preferred. *
- a component (also referred to as a repeating unit) constituting the hard segment polyester those comprising a butylene terephthalate unit or a butylene naphthalate unit are more preferable in view of physical properties, moldability, and cost performance.
- naphthalate units 2,6 are preferable.
- a preferred specific example of the repeating unit of the hard segment constituting the polyester resin is represented by the following general formula (1-1) or (1-2). *
- m represents an integer of 1 or more, and is preferably 4 or more.
- the upper limit of m is not particularly limited, but 8 or less is practical.
- the aliphatic or alicyclic diol component constituting the soft segment is a component mainly composed of alkylene glycols having 2 to 8 carbon atoms. Specific examples thereof include ethylene glycol, 1,3-propylene glycol, 1,4-butanediol, 1,6-hexanediol, 1,4-cyclohexanedimethanol and the like. Of these, a 1,4-butanediol component and a 1,6-hexanediol component having 4 or more carbon atoms are preferred. *
- the aromatic dicarboxylic acid component constituting the soft segment is preferably a terephthalic acid component or a naphthalenedicarboxylic acid component.
- Other acid components include aromatic dicarboxylic acids such as diphenyldicarboxylic acid, isophthalic acid and 5-sodiumsulfoisophthalic acid, alicyclic dicarboxylic acid components such as cyclohexanedicarboxylic acid and tetrahydrophthalic anhydride, succinic acid, glutar And aliphatic dicarboxylic acid components such as acid, adipic acid, azelaic acid, sebacic acid, dodecanedioic acid, dimer acid, and hydrogenated dimer acid.
- aromatic dicarboxylic acids such as diphenyldicarboxylic acid, isophthalic acid and 5-sodiumsulfoisophthalic acid
- alicyclic dicarboxylic acid components such as cyclohexanedicar
- a preferred specific example of the repeating unit of the soft segment constituting the polyester resin is represented by the following general formula (2-1) or (2-2). *
- g represents an integer of 10 or more.
- m represents an integer of 1 or more and is preferably 4 or more.
- the upper limit of m is not particularly limited, but 8 or less is practical.
- the value of m in the polyester resin can be specified by a known method. For example, it can be identified by 1 H-NMR (proton nuclear magnetic resonance) analysis. By dissolving the polyester resin in a solvent of trifluoroacetic acid and performing 1 H-NMR spectrum analysis, the carbon number of the aliphatic or alicyclic diol component in the hard segment and the soft segment can be confirmed.
- 1 H-NMR proto nuclear magnetic resonance
- polyester elastomers Commercially available products that can be preferably used as polyester elastomers include "Perprene” (trade name: manufactured by Toyobo), “Hytrel” (trade name: manufactured by Toray DuPont), and “Primalloy” (trade name: Mitsubishi Chemical Corporation) Company-made). *
- the outermost layer of the multilayer insulated wire of the present invention is an extrusion coating layer made of a resin material having a tensile elastic modulus at 25 ° C. of 1000 MPa or more.
- the upper limit of the tensile modulus is not particularly limited, but it is practical that it is 5000 MPa or less at 25 ° C.
- a resin material having a tensile elastic modulus at 25 ° C. of less than 1000 MPa is used, when the multilayer insulated wire is wound in a coil shape, the tensile elastic modulus is low, so that the coating layer is easily damaged and the withstand voltage characteristics are deteriorated.
- the resin material having a tensile modulus of elasticity at 25 ° C. of 1000 MPa or more is preferably a polyamide resin.
- a polyamide resin As the outermost layer, the flexibility of the electric wire is most excellent, which is advantageous during coil processing.
- Polyamide resins suitably used as the outermost insulating layer include polyamide (also referred to as nylon) 6, 6 (“A-125”: trade name, manufactured by Unitika Ltd., “Amilan”: trade name, Toray Industries, Inc.
- a first insulating layer having a desired thickness is extrusion coated on the outer periphery of the conductor, and then a second layer having a desired thickness is formed on the outer periphery of the first insulating layer.
- the outermost insulating layer is further extrusion-coated by the method of extrusion-coating the outermost insulating layer.
- the total thickness of the extruded insulating layer thus formed is preferably in the range of 50 to 180 ⁇ m for the three layers. This is because if the overall thickness of the insulating layer is too thin, the resulting withstand voltage characteristics of the heat-resistant multilayer insulated wire is large, which may be unsuitable for practical use. This is because coil processing may be difficult.
- a more preferable range is 60 to 150 ⁇ m.
- Each layer is preferably 20 to 60 ⁇ m. *
- the primary winding 4 and the secondary winding are not incorporated in the bobbin 2 on the ferrite core 1 as shown in FIG. 1 without incorporating an insulation barrier or an insulation tape layer.
- a structure in which the winding 6 is formed is preferable.
- the multilayer insulated wire of the present invention can also be applied to other types of transformers.
- Examples 1 to 9 and Comparative Examples 1 to 3 An annealed copper wire having a wire diameter of 1.0 mm was prepared as a conductor.
- a multilayer insulated wire was manufactured by sequentially extruding and covering the conductor with the thickness of the resin for extrusion coating of each layer shown in Table 1 (indicated as “film thickness” in Table 1). About the obtained multilayer insulated wire, various characteristics were tested by the following specifications.
- Reciprocating abrasion test A reciprocating abrasion tester was used for abrasion resistance.
- the reciprocating wear tester is a tester that applies a constant load and scratches the surface of the insulated wire with a needle to measure the number of times that the conductor is exposed on the surface of the film, whereby the film strength can be measured. Wear resistance was evaluated based on a load of 700 g and the number of reciprocal wear reaching 50. In Table 1, “A” indicates that the number of reciprocating wear times was 50 times or more, and was regarded as acceptable. When the number of reciprocating wears was less than 200, “B” was displayed and rejected. A case where the number of reciprocal wears exceeded 80 was judged to be particularly excellent in wear resistance, and indicated as “AA”.
- Comparative Example 1 since the resin having a low tensile elastic modulus was provided in the outermost layer, the film was damaged during winding of the mandrel, and the withstand voltage characteristics were not satisfied. In Comparative Example 2, heat resistance was not satisfied because a resin having a low melting point was provided in the inner layer. In Comparative Example 3, when a resin having a high tensile elastic modulus was provided in the inner layer, the physical properties of the film were lowered after heat aging, and the film was cracked or damaged, so that the heat aging resistance and the electrical characteristics after heat aging were not satisfied.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Insulating Materials (AREA)
- Insulated Conductors (AREA)
Abstract
Description
このような規格のもとで、従来の主流の変圧器としては、図2の断面図に例示するような、絶縁バリヤ3と絶縁テープ5を有する構造のものが採用されてきた。この変圧器は、フェライトコア1上のボビン2の周面両側端に沿面距離を確保するための絶縁バリヤ3が配置された状態でエナメル被覆された一次巻線4が巻回されている。さらに、この一次巻線4の上に、絶縁テープ5を少なくとも3層巻回し、更にこの絶縁テープの上に沿面距離を確保するための絶縁バリヤ3を配置したのち、同じくエナメル被覆された二次巻線6が巻回された構造を有している。
図1で示した変圧器を製造する場合、絶縁バリヤや絶縁テープ層がないため、用いる1次巻線4及び2次巻線6のいずれか一方もしくは両方の導体4a(6a)の外周に、少なくとも3層の絶縁層4b(6b),4c(6c),4d(6d)が形成されていることが、前記したIEC規格との関係で必要になる。
さらに本発明は、このような耐電圧特性に優れた絶縁電線を巻回してなる、信頼性の高い変圧器などの電気・電子機器を提供することを課題とする。
(1)2層以上の絶縁層を有する多層絶縁電線であって、最外層以外の絶縁層のうち少なくとも1層が融点200℃以上、25℃における引張弾性率1000MPa以下の樹脂からなる絶縁層であり、最外層に25℃における引張弾性率が1000MPa以上である樹脂材料(単に樹脂ともいう。)を被覆したことを特徴とする多層絶縁電線。
(2)前記最外層以外の絶縁層を形成する樹脂がポリエステル樹脂であり、該ポリエステル樹脂を構成するジオール成分の繰り返し単位が
-[O-(L1-O)m]-
L1はアルキレン基を表し、mは1以上の整数を表す)
で表され、一つの繰り返し単位中のすべてのL1の炭素数の総和が4以上であることを特徴とする(1)に記載の多層絶縁電線。
(3)前記L1が炭素数4以上のアルキレン基であり、mが1以上の整数であることを特徴とする(2)に記載の多層絶縁電線。
(4)前記最外層がポリアミド樹脂からなる押出被覆層であることを特徴とする(1)~(3)のいずれか1項に記載の多層絶縁電線。
(5)(1)~(4)のいずれか1項に記載の多層絶縁電線を電気・電子機器に組み込む変圧器の巻線またはリード線として用いてなることを特徴とする電気・電子機器。
25℃における引張弾性率は好ましくは900MPa以下である。25℃における引張弾性率の下限は特に制限はないが、250MPa以上であるのが実際的である。25℃における引張弾性率が1000MPaを超える樹脂を用いると、被覆層を構成する樹脂に熱老化が生じやすくなることがある。熱老化が生じると、樹脂の機械強度が低下し、熱によるストレスに起因するクラックが生じるため、多層絶縁電線の耐電圧特性が低下することがある。
-[O-(L1-O)m]-
(L1はアルキレン基を表し、mは1以上の整数を表す)
で表され、一つの繰り返し単位中のすべてのL1の炭素数の総和が4以上であることがさらに好ましい。特にL1が炭素数4以上のアルキレン基であり、mが1以上の整数であることが好ましい。最も好ましくは、L1が炭素数4~8のアルキレン基であり、mが1又は2である。
「ハードセグメント」とは、芳香族ジカルボン酸構成成分またはその一部が脂肪族ジカルボン酸で置換されているジカルボン酸構成成分を主な酸構成成分とするポリエステルセグメントであり、「ソフトセグメント」は、脂肪族ジオールの重合により得られたポリエーテルをポリオール構成成分とするポリエステルセグメントである。
25℃における引張弾性率が1000MPa未満である樹脂材料を用いると、多層絶縁電線をコイル状に巻いたときに引張弾性率が低いために被覆層が損傷しやすくなり、耐電圧特性が低下する。
導体として線径1.0mmの軟銅線を用意した。表1に示した各層の押出被覆用樹脂の厚さ(表1において「膜厚」と表記する)で、導体上に順次押出し被覆して多層絶縁電線を製造した。得られた多層絶縁電線につき、下記の仕様で各種の特性を試験した。
耐熱性を下記の試験方法で評価した。
ツイスト巻にした電線を200℃で加熱を行い、一定時間ごとに2400Vにて1秒間電圧を印加した。N=10で試験を行い、短絡が起こった時間の平均値が500時間を越えたものを合格と判定し「A」で表示し、平均値が500時間に満たないものを不合格とし「B」で表示した。平均時間が700時間を越えたものを特に耐熱老化性に優れると判定し、「AA」で表示した。
IEC規格 Pub.60950に準拠した下記の試験方法で評価した。
直径10mmのマンドレルに多層絶縁電線を、荷重9.4kgをかけながら10ターン巻付け、225℃で1時間加熱し、更に150℃で21時間及び200℃で3時間を3サイクル加熱し、更に30℃、湿度95%の雰囲気に48時間保持した。その後5500Vにて1分間電圧を印加し短絡しなければ、上記規格におけるB種合格と判定し「A」で表示した(判定はn=5にて評価、1つでも短絡すれば不合格となり「B」で表示した)。
耐摩耗性は往復摩耗試験機を用いた。往復摩耗試験機は、一定荷重を加えて絶縁電線の表面を針で引っかき、皮膜表面に導体露出が発生する回数を測定する試験機で、これにより、皮膜強度を測定できる。荷重を700gとし、往復摩耗回数が50回に達するかで耐摩耗性を評価した。表1において、往復磨耗回数が50回以上のものを「A」と表示し、合格とした。往復磨耗回数が200回に満たなかったものを「B」と表示し、不合格とした。往復磨耗回数が80回を越えたものを特に耐摩耗性に優れると判定し、「AA」で表示した。
ETFE:フルオンC-55AP(旭硝子社製、商品名)
TPEE(A):ペルプレン6001(東洋紡績社製、商品名)ポリエステルエラストマー
TPEE(B):ハイトレル2571(東レ・デュポン社製、商品名)ポリエステルエラストマー
TPEE(C):ペルプレンEN5000(東洋紡績社製、商品名)ポリエステルエラストマー
PPS:DICPPS FZ2200A8(大日本インキ化学工業社製、商品名)ポリフェニレンスルフィド樹脂
PEEK:381G(ビクトレックス社製、商品名)ポリエーテルエーテルケトン樹脂
ポリアミド6,6:FDK-1(商品名:ユニチカ社製、)ポリアミド66樹脂
ポリアミド6,T:アーレンAE4200(商品名:三井化学社製、)ポリアミド6T樹脂
PET:TR-8550(帝人社製、商品名)ポリエチレンテレフタレート樹脂
ポリアミドエラストマー:PA-260(T&K TOKA社製、商品名)ポリエーテルエステルアミドエラストマー
PBN:帝人PBN(帝人化成社製、商品名)ポリブチレンナフタレート樹脂
比較例1では最外層に引張弾性率の低い樹脂を設けたため、マンドレル巻き時に皮膜が損傷し、耐電圧特性を満足しなかった。比較例2では内層に融点の低い樹脂を設けたために耐熱性を満足しなかった。比較例3では内層に引張弾性率の高い樹脂を設けると熱老化後に皮膜物性が低下し、皮膜に割れや損傷が生じるために耐熱老化性、熱老化後の電気特性を満足しなかった。
このように本発明の多層絶縁電線が優れた耐熱性と高い耐電圧熱衝撃特性を有することが示された。
2 ボビン
3 絶縁バリヤ
4 一次巻線
4a 導体
4b,4c,4d 絶縁層
5 絶縁テープ
6 二次巻線
6a 導体
6b,6c,6d 絶縁層
Claims (5)
- 2層以上の絶縁層を有する多層絶縁電線であって、最外層以外の絶縁層のうち少なくとも1層が融点200℃以上、25℃における引張弾性率1000MPa以下の樹脂からなる絶縁層であり、最外層に25℃における引張弾性率が1000MPa以上である樹脂材料を被覆したことを特徴とする多層絶縁電線。
- 前記最外層以外の絶縁層を形成する樹脂がポリエステル樹脂であり、該ポリエステル樹脂を構成するジオール成分の繰り返し単位が
-[O-(L1-O)m]-
(L1はアルキレン基を表し、mは1以上の整数を表す)
で表され、一つの繰り返し単位中のすべてのL1の炭素数の総和が4以上であることを特徴とする請求項1に記載の多層絶縁電線。 - 前記L1が炭素数4以上のアルキレン基であり、mが1以上の整数であることを特徴とする請求項2に記載の多層絶縁電線。
- 前記最外層がポリアミド樹脂からなる押出被覆層であることを特徴とする請求項1~3のいずれか1項に記載の多層絶縁電線。
- 請求項1~4のいずれか1項に記載の絶縁電線を電気・電子機器に組み込む変圧器の巻線またはリード線として用いてなることを特徴とする電気・電子機器。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13768428.8A EP2833371A4 (en) | 2012-03-27 | 2013-03-21 | MULTILAYER INSULATED ELECTRICAL WIRE AND ELECTRICAL OR ELECTRONIC DEVICES THEREWITH |
| CN201380003235.XA CN103843075B (zh) | 2012-03-27 | 2013-03-21 | 多层绝缘电线及使用该多层绝缘电线的电气/电子设备 |
| CA2850102A CA2850102A1 (en) | 2012-03-27 | 2013-03-21 | Multilayer insulated electric wire and electric or electronic equipment using the same |
| KR1020147008155A KR101741305B1 (ko) | 2012-03-27 | 2013-03-21 | 다층 절연 전선 및 그것을 이용한 전기·전자기기 |
| US14/255,551 US20140225704A1 (en) | 2012-03-27 | 2014-04-17 | Multilayer insulated electric wire and electric or electronic equipment using the same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-070843 | 2012-03-27 | ||
| JP2012070843 | 2012-03-27 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US14/255,551 Continuation US20140225704A1 (en) | 2012-03-27 | 2014-04-17 | Multilayer insulated electric wire and electric or electronic equipment using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013146531A1 true WO2013146531A1 (ja) | 2013-10-03 |
Family
ID=49259787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2013/058080 Ceased WO2013146531A1 (ja) | 2012-03-27 | 2013-03-21 | 多層絶縁電線及びそれを用いた電気・電子機器 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20140225704A1 (ja) |
| EP (1) | EP2833371A4 (ja) |
| JP (1) | JPWO2013146531A1 (ja) |
| KR (1) | KR101741305B1 (ja) |
| CN (1) | CN103843075B (ja) |
| CA (1) | CA2850102A1 (ja) |
| MY (1) | MY174938A (ja) |
| TW (1) | TWI550653B (ja) |
| WO (1) | WO2013146531A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015149869A (ja) * | 2014-02-07 | 2015-08-20 | 株式会社デンソー | 回転電機の固定子 |
| JP2016165224A (ja) * | 2016-06-17 | 2016-09-08 | 株式会社デンソー | 回転電機の固定子 |
| WO2023149021A1 (ja) * | 2022-02-01 | 2023-08-10 | 住友電気工業株式会社 | マグネットワイヤ |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2015105095A1 (ja) * | 2014-01-10 | 2017-03-23 | 古河電気工業株式会社 | 絶縁電線、コイルおよび電気・電子機器ならびに絶縁電線の割れ防止方法 |
| JP6822252B2 (ja) * | 2017-03-22 | 2021-01-27 | 三菱マテリアル株式会社 | コイル及びその製造方法 |
| US20210043374A1 (en) * | 2019-08-09 | 2021-02-11 | Illinois Tool Works Inc. | Insulated winding wire transformer for welding-type power supplies |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06223634A (ja) | 1992-10-28 | 1994-08-12 | Furukawa Electric Co Ltd:The | 多層絶縁電線とその製造方法 |
| JPH10134642A (ja) | 1996-10-30 | 1998-05-22 | Furukawa Electric Co Ltd:The | 多層絶縁電線およびこれを用いた変圧器 |
| WO2001056041A1 (en) * | 2000-01-25 | 2001-08-02 | The Furukawa Electric Co., Ltd. | Multilayer insulated wire and transformer comprising the same |
| JP2002358833A (ja) * | 2001-06-01 | 2002-12-13 | Norichika Takebe | 異種組合せ絶縁電線 |
| JP2010123562A (ja) * | 2008-10-20 | 2010-06-03 | Furukawa Electric Co Ltd:The | 多層絶縁電線及びそれを用いた変圧器 |
| JP2012221587A (ja) * | 2011-04-04 | 2012-11-12 | Mitsubishi Cable Ind Ltd | 絶縁被覆集合線及びその製造方法、並びにそれを用いたコイル |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4501928A (en) * | 1983-05-09 | 1985-02-26 | Dainichi-Nippon Cables, Ltd. | Shielding tape and electric cables using same |
| US4915990A (en) * | 1987-03-02 | 1990-04-10 | Raychem Corporation | Method of, and elastomeric composition for, protecting a substrate |
| JPH11176245A (ja) * | 1997-10-14 | 1999-07-02 | Furukawa Electric Co Ltd:The | 多層絶縁電線およびそれを用いた変圧器 |
| JPH11176246A (ja) * | 1997-10-24 | 1999-07-02 | Furukawa Electric Co Ltd:The | 多層絶縁電線及びそれを用いた変圧器 |
| JP2000100253A (ja) * | 1998-09-22 | 2000-04-07 | Toyobo Co Ltd | 電 線 |
| JP2002254582A (ja) * | 2001-03-01 | 2002-09-11 | Tokai Rubber Ind Ltd | 接着積層体およびホースならびにそれらの製法 |
| JP5135789B2 (ja) * | 2006-12-26 | 2013-02-06 | 東洋紡株式会社 | 電線 |
| JP2010100724A (ja) * | 2008-10-23 | 2010-05-06 | Hitachi Cable Ltd | ポリブチレンナフタレート系樹脂組成物及びポリブチレンナフタレート系樹脂組成物を用いた電線 |
| WO2011027748A1 (ja) | 2009-09-02 | 2011-03-10 | 古河電気工業株式会社 | 多層絶縁電線及びそれを用いた変圧器 |
-
2013
- 2013-03-21 KR KR1020147008155A patent/KR101741305B1/ko not_active Expired - Fee Related
- 2013-03-21 CA CA2850102A patent/CA2850102A1/en not_active Abandoned
- 2013-03-21 CN CN201380003235.XA patent/CN103843075B/zh not_active Expired - Fee Related
- 2013-03-21 WO PCT/JP2013/058080 patent/WO2013146531A1/ja not_active Ceased
- 2013-03-21 EP EP13768428.8A patent/EP2833371A4/en not_active Withdrawn
- 2013-03-21 JP JP2013544600A patent/JPWO2013146531A1/ja active Pending
- 2013-03-21 MY MYPI2014700931A patent/MY174938A/en unknown
- 2013-03-25 TW TW102110446A patent/TWI550653B/zh not_active IP Right Cessation
-
2014
- 2014-04-17 US US14/255,551 patent/US20140225704A1/en not_active Abandoned
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06223634A (ja) | 1992-10-28 | 1994-08-12 | Furukawa Electric Co Ltd:The | 多層絶縁電線とその製造方法 |
| JPH10134642A (ja) | 1996-10-30 | 1998-05-22 | Furukawa Electric Co Ltd:The | 多層絶縁電線およびこれを用いた変圧器 |
| WO2001056041A1 (en) * | 2000-01-25 | 2001-08-02 | The Furukawa Electric Co., Ltd. | Multilayer insulated wire and transformer comprising the same |
| JP4762474B2 (ja) | 2000-01-25 | 2011-08-31 | 古河電気工業株式会社 | 多層絶縁電線及びそれを用いた変圧器 |
| JP2002358833A (ja) * | 2001-06-01 | 2002-12-13 | Norichika Takebe | 異種組合せ絶縁電線 |
| JP2010123562A (ja) * | 2008-10-20 | 2010-06-03 | Furukawa Electric Co Ltd:The | 多層絶縁電線及びそれを用いた変圧器 |
| JP2012221587A (ja) * | 2011-04-04 | 2012-11-12 | Mitsubishi Cable Ind Ltd | 絶縁被覆集合線及びその製造方法、並びにそれを用いたコイル |
Non-Patent Citations (2)
| Title |
|---|
| KOJI KOBAYASHI: "Features and applications of Pelprene ultra-heat resistant thermoplastic polyester elastomer", PLASTICS AGE, vol. 55, no. 7, 1 July 2009 (2009-07-01), pages 69 - 73, XP008173072 * |
| See also references of EP2833371A4 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015149869A (ja) * | 2014-02-07 | 2015-08-20 | 株式会社デンソー | 回転電機の固定子 |
| JP2016165224A (ja) * | 2016-06-17 | 2016-09-08 | 株式会社デンソー | 回転電機の固定子 |
| WO2023149021A1 (ja) * | 2022-02-01 | 2023-08-10 | 住友電気工業株式会社 | マグネットワイヤ |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101741305B1 (ko) | 2017-05-29 |
| JPWO2013146531A1 (ja) | 2015-12-14 |
| CN103843075A (zh) | 2014-06-04 |
| US20140225704A1 (en) | 2014-08-14 |
| EP2833371A1 (en) | 2015-02-04 |
| TWI550653B (zh) | 2016-09-21 |
| EP2833371A4 (en) | 2015-10-21 |
| TW201346943A (zh) | 2013-11-16 |
| CN103843075B (zh) | 2017-11-28 |
| CA2850102A1 (en) | 2013-10-03 |
| KR20140123472A (ko) | 2014-10-22 |
| MY174938A (en) | 2020-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9728301B2 (en) | Insulated wire and electric or electronic equipment | |
| JP5739810B2 (ja) | 多層絶縁電線及びそれを用いた変圧器 | |
| JP5391341B1 (ja) | 耐インバータサージ絶縁ワイヤ | |
| CN102782773B (zh) | 绝缘电线 | |
| WO2013146531A1 (ja) | 多層絶縁電線及びそれを用いた電気・電子機器 | |
| JPWO2015033821A1 (ja) | 平角電線およびその製造方法並びに電気機器 | |
| TW201535428A (zh) | 多層絕緣電線,線圈及電氣、電子機器 | |
| CN1221982C (zh) | 多层绝缘导线以及使用其的变压器 | |
| CN101273418B (zh) | 多层绝缘电线和使用了该多层绝缘电线的变压器 | |
| WO2015098640A1 (ja) | 絶縁ワイヤ、コイルおよび電子・電気機器 | |
| JP2010123562A (ja) | 多層絶縁電線及びそれを用いた変圧器 | |
| JP4897963B2 (ja) | 多層絶縁電線及びそれを用いた変圧器 | |
| HK1193671B (en) | Multi-layer insulated electrical wiring and electrical/electronic device using same | |
| HK1193671A (en) | Multi-layer insulated electrical wiring and electrical/electronic device using same | |
| JP3721313B2 (ja) | 異種組合せ絶縁電線 | |
| JP5520468B2 (ja) | 多層絶縁電線及びそれを用いた変圧器 | |
| HK1200591B (en) | Insulated wire and electrical/electronic device | |
| JP2009231025A (ja) | 多層絶縁電線及びそれを用いた変圧器 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ENP | Entry into the national phase |
Ref document number: 2013544600 Country of ref document: JP Kind code of ref document: A |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13768428 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2850102 Country of ref document: CA |
|
| ENP | Entry into the national phase |
Ref document number: 20147008155 Country of ref document: KR Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2013768428 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |


