JPH10172354A - Insulating wire and electrical machinery and apparatus using thereof - Google Patents
Insulating wire and electrical machinery and apparatus using thereofInfo
- Publication number
- JPH10172354A JPH10172354A JP33562696A JP33562696A JPH10172354A JP H10172354 A JPH10172354 A JP H10172354A JP 33562696 A JP33562696 A JP 33562696A JP 33562696 A JP33562696 A JP 33562696A JP H10172354 A JPH10172354 A JP H10172354A
- Authority
- JP
- Japan
- Prior art keywords
- inorganic filler
- insulated wire
- insulating
- insulating paint
- parts
- 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.)
- Granted
Links
- 239000011248 coating agent Substances 0.000 claims abstract description 24
- 238000000576 coating method Methods 0.000 claims abstract description 24
- 239000011347 resin Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000011256 inorganic filler Substances 0.000 claims abstract description 20
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 20
- 239000004020 conductor Substances 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 15
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 13
- 229920001721 polyimide Polymers 0.000 claims abstract description 12
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 9
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000009719 polyimide resin Substances 0.000 claims abstract description 9
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003973 paint Substances 0.000 claims description 47
- 229910021485 fumed silica Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 3
- 239000000843 powder Substances 0.000 claims 3
- 239000000377 silicon dioxide Substances 0.000 abstract description 8
- 239000004962 Polyamide-imide Substances 0.000 abstract description 3
- 239000004642 Polyimide Substances 0.000 abstract description 3
- 229920003055 poly(ester-imide) Polymers 0.000 abstract description 3
- 229920002312 polyamide-imide Polymers 0.000 abstract description 3
- -1 polymide Polymers 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 2
- WJRBRSLFGCUECM-UHFFFAOYSA-N hydantoin Chemical compound O=C1CNC(=O)N1 WJRBRSLFGCUECM-UHFFFAOYSA-N 0.000 abstract 1
- 229940091173 hydantoin Drugs 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 229920000728 polyester Polymers 0.000 abstract 1
- 239000002966 varnish Substances 0.000 description 20
- 239000000203 mixture Substances 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- 238000004804 winding Methods 0.000 description 6
- 229910002012 Aerosil® Inorganic materials 0.000 description 4
- 239000011888 foil Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000010445 mica Substances 0.000 description 3
- 229910052618 mica group Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000005639 Lauric acid Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical class [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Inorganic Insulating Materials (AREA)
- Organic Insulating Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、耐コロナ性に優れ
た絶縁電線およびこれを用いた電気機器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulated wire having excellent corona resistance and an electric device using the same.
【０００２】[0002]
【従来の技術】近年、高圧モータや高圧トランスなどに
用いる巻線として、耐コロナ性に優れた絶縁電線の要求
がある。2. Description of the Related Art In recent years, there has been a demand for insulated wires having excellent corona resistance as windings used in high-voltage motors and transformers.
【０００３】耐コロナ性に優れた絶縁電線としては、従
来、導体上にポリエステルフィルムなどのプラスチック
フィルム巻回層を設けるとともに、この巻回層内に中間
層として耐コロナ性の良好なマイカ箔を介在させたもの
が一般に知られている。また、絶縁塗料を通常より厚く
塗布し焼付けることにより耐コロナ性を向上させたもの
も知られている。さらに、近時、無機充填剤を添加した
絶縁塗料を用いて耐コロナ性を改善した絶縁電線も報告
されている。Conventionally, as an insulated wire having excellent corona resistance, a wound layer of a plastic film such as a polyester film is provided on a conductor, and a mica foil having a good corona resistance is provided as an intermediate layer in the wound layer. Intervening ones are generally known. In addition, there is also known one in which an insulating paint is applied thicker than usual and baked to improve corona resistance. Furthermore, recently, an insulated wire having improved corona resistance using an insulating paint to which an inorganic filler is added has been reported.
【０００４】しかしながら、マイカ箔を介在させたもの
では、ピンホールが生じやすく、また、コイル成形性に
乏しいうえに、スペースファクターが不良で、高圧モー
タなどの巻線として使用した場合に、モータが大型化し
てしまうという難点がある。また、絶縁塗料を通常より
厚く塗布し焼付けたものは、通常のものより耐コロナ性
は改善されるものの不十分であり、しかも、厚膜化のた
めにスペースファクターが低下し、マイカ箔を介在させ
たものと同様、コイル外形が大きくなって、機器が大型
化してしまうという難点がある。[0004] However, in the case where the mica foil is interposed, pinholes are easily generated, the coil formability is poor, and the space factor is poor. There is a drawback that it becomes large. Insulation paint applied thicker than usual and baked has improved corona resistance compared to the usual one, but is insufficient.Moreover, the space factor is reduced due to the thick film, and mica foil is interposed. As in the case of the above, there is a problem that the coil outer shape becomes large and the device becomes large.
【０００５】さらに、無機充填剤を添加した絶縁塗料を
用いたものにおいても、耐コロナ性の改善が不十分であ
ったり、あるいは耐コロナ性は改善されるものの熱伝導
性や他の電気特性が低下するなど、高圧モータや高圧ト
ランス用の巻線に用いるには未だ十分ではない。[0005] Further, in the case of using an insulating paint to which an inorganic filler is added, the improvement of corona resistance is insufficient, or the corona resistance is improved, but the thermal conductivity and other electrical properties are not improved. For example, it is not enough for use in windings for high-voltage motors and high-voltage transformers.
【０００６】[0006]
【発明が解決しようとする課題】このように、近年、高
圧モータや高圧トランスなどに用いる巻線として使用可
能な、耐コロナ性に優れた絶縁電線の要求があるが、従
来より知られる耐コロナ性電線では、耐コロナ性が不十
分であったり、あるいは、ピンホールが生じやすい、コ
イル成形性に乏しい、スペースファクターが不良で機器
の大型化を招くなどの難点があり、その適用は困難であ
った。As described above, in recent years, there has been a demand for an insulated wire having excellent corona resistance which can be used as a winding for a high-voltage motor or a high-voltage transformer. Insulated wires have problems such as insufficient corona resistance, poor pinhole formation, poor coil formability, poor space factor, and large equipment. there were.
【０００７】本発明はこのような従来の事情に対処して
なされたもので、耐コロナ性に優れ、しかも、ピンホー
ルが生じやすい、コイル成形性に乏しい、スペースファ
クターが不良で機器が大型化する、他の電気特性が低下
するなどの不都合のない絶縁電線およびこれを用いた電
気機器を提供することを目的とする。The present invention has been made in view of such a conventional situation, and is excellent in corona resistance, easy to produce pinholes, poor in coil formability, has a poor space factor, and has a large device. It is an object of the present invention to provide an insulated electric wire which does not cause inconvenience such as deterioration of other electric characteristics and an electric device using the same.
【０００８】[0008]
【課題を解決するための手段】本発明の絶縁電線は、導
体外周に、炭化珪素、乾式シリカ、ケイ酸ジルコニウム
および酸化マグネシウムからなる無機充填剤群より選ば
れた少なくとも 1種を含有する絶縁塗料の塗布焼付層を
具備してなることを特徴とするものである。According to the present invention, there is provided an insulated wire comprising at least one type of inorganic filler selected from the group consisting of silicon carbide, fumed silica, zirconium silicate and magnesium oxide on the outer periphery of a conductor. Characterized by comprising a coating and baking layer.
【０００９】また、本発明の電気機器は、上記絶縁電線
からなる絶縁コイルを具備したことを特徴とするもので
ある。Further, an electric device according to the present invention is provided with an insulating coil comprising the above-mentioned insulated wire.
【００１０】本発明で使用される絶縁塗料の樹脂成分
は、特に限定されるものではなく従来より知られる各種
の合成樹脂のなかから任意に選択されてよいが、なかで
もポリイミド樹脂、ポリアミドイミド樹脂、ポリエステ
ルイミド樹脂、ポリイミドヒダントイン変性ポリエステ
ル樹脂などのポリイミド系樹脂の使用が望ましい。これ
らは 1種を単独で使用してもよく、また、 2種以上を混
合して使用するようにしてもよい。[0010] The resin component of the insulating paint used in the present invention is not particularly limited, and may be arbitrarily selected from various synthetic resins known in the art. Among them, polyimide resins and polyamide-imide resins It is desirable to use a polyimide resin such as a polyesterimide resin or a polyimide hydantoin-modified polyester resin. These may be used alone or as a mixture of two or more.
【００１１】また、本発明で使用される炭化珪素、乾式
シリカ、ケイ酸ジルコニウムおよび酸化マグネシウム
は、無機充填剤として一般に知られるものであるが、本
発明においては、なかでも、炭化珪素、ケイ酸ジルコニ
ウムおよび酸化マグネシウムにおいては粒径が10μｍ以
下のもの、また、乾式シリカにおいては粒径が 100nm以
下のものを使用することが好ましい。かかる粒径のもの
を用いることにより、塗料中に良好に分散させることが
でき、絶縁電線としての他の特性を損なうことなく、耐
コロナ性を向上させることができる。より好ましくは、
炭化珪素が粒径 0.4〜4 μｍの範囲のもの、乾式シリカ
が粒径10〜50nmの範囲のもの、ケイ酸ジルコニウムが粒
径 0.5〜5 μｍの範囲のもの、酸化マグネシウムが粒径
0.1〜5 μｍの範囲のものである。本発明においては、
塗料とのなじみをよくするため、これらの無機充填剤を
ステアリン酸系やラウリン酸系の化合物、あるいはチタ
ン系、シリコン系、アルミ系のカップリング剤などで表
面処理して用いるようにしてもよい。The silicon carbide, fumed silica, zirconium silicate and magnesium oxide used in the present invention are generally known as inorganic fillers. In the present invention, silicon carbide, silicate and It is preferable to use zirconium and magnesium oxide having a particle size of 10 μm or less, and to use dry silica having a particle size of 100 nm or less. By using the particles having such a particle size, the particles can be dispersed well in the paint, and the corona resistance can be improved without impairing other characteristics of the insulated wire. More preferably,
Silicon carbide with a particle size of 0.4 to 4 μm, dry silica with a particle size of 10 to 50 nm, zirconium silicate with a particle size of 0.5 to 5 μm, magnesium oxide with a particle size
It is in the range of 0.1 to 5 μm. In the present invention,
These inorganic fillers may be surface-treated with a stearic acid-based or lauric acid-based compound, or a titanium-based, silicon-based, aluminum-based coupling agent, or the like to improve compatibility with the paint. .
【００１２】なお、このような無機質充填剤の配合量と
しては、乾式シリカの場合、塗料中にその樹脂分 100重
量部あたり 2〜50重量部、また、その他の炭化珪素、ケ
イ酸ジルコニウムおよび酸化マグネシウムの場合、それ
ぞれ樹脂分 100重量部あたり5〜100 重量部の範囲が望
ましい。配合量がこれらの範囲より少ないと耐コロナ性
の改善が不十分となり、また、多いと耐コロナ性改善効
果があまり変わらないうえ、可とう性などの他の特性が
低下するようになる。In the case of dry silica, the amount of such an inorganic filler is 2 to 50 parts by weight per 100 parts by weight of the resin component in the case of dry silica, and also other silicon carbide, zirconium silicate and oxide. In the case of magnesium, the range is preferably 5 to 100 parts by weight per 100 parts by weight of the resin component. If the amount is less than these ranges, the improvement of the corona resistance becomes insufficient. If the amount is too large, the effect of improving the corona resistance does not change much, and other properties such as flexibility deteriorate.
【００１３】ここで、本発明で使用される無機充填剤を
具体的に例示すると、炭化珪素としては、昭和電工社製
のウルトラデンシックDU、京セラ社製の SC 、和光純薬
社製のβ型などが、乾式シリカとしては、日本アエロジ
ル社製のアエロジル #130 同#200 同 #200V、同 OX50
、同 COK84などが、ケイ酸ジルコニウムとしては、キ
ンセイマテック社製の A-PAXなどが、酸化マグネシウム
としては、神島化学工業社製のスターマグ、HP、宇部化
学工業社製の #100A（以上、いずれも商品名）などがあ
げられる。Here, specific examples of the inorganic filler used in the present invention include, as silicon carbide, Ultradensic DU manufactured by Showa Denko, SC manufactured by Kyocera, and β manufactured by Wako Pure Chemical Industries. Molds are dry silica such as Aerosil # 130, # 200, # 200V, and OX50 manufactured by Nippon Aerosil Co., Ltd.
And the COK84 is, as the zirconium silicate, cordierite, etc. Matec Co. A-PAX is, as magnesium oxide, Konoshima Chemical Co. Sutamagu, HP, Ube Chemical Industries, Ltd. # 100A (or any Also product names).
【００１４】本発明の絶縁電線は、上記各成分を適当な
溶剤に溶解または分散させるか、あるいは、各成分を予
め溶剤に溶解または分散させておいたものを混合するな
どして絶縁塗料とし、これを導体上に塗布焼付けること
により製造される。塗布焼付層の層厚としては、30μｍ
〜60μｍが適当で、これより薄いと耐コロナ性が不十分
となり、また、逆に厚いと外径が大きくなり、コイルに
成形した場合に外形の大きいコイルが形成される。[0014] The insulated wire of the present invention is obtained by dissolving or dispersing each of the above components in an appropriate solvent, or mixing the components in which the components are previously dissolved or dispersed in a solvent, to obtain an insulating paint. It is manufactured by applying and baking this on a conductor. The thickness of the coating baking layer is 30μm
If the thickness is smaller than 60 μm, the corona resistance becomes insufficient. On the other hand, if the thickness is larger, the outer diameter increases, and a coil having a large outer shape is formed when formed into a coil.
【００１５】なお、絶縁塗料には、本発明の効果を阻害
しない範囲で他の樹脂や添加剤を配合することができ
る。また、本発明においては、上記絶縁塗料による塗布
焼付層を導体上に直接設けず、他の絶縁層、たとえば、
無機充填剤を含有しない絶縁塗料の塗布焼付層を介して
設けるようにしてもよく、また、上記絶縁塗料による塗
布焼付層上に、上引層として、同様に無機充填剤を含有
しない絶縁塗料の塗布焼付層を設けるようにしてもよ
い。かかる構成により、耐コロナ性や熱伝導性は若干低
下するものの、可とう性やコイル巻加工性を向上させる
ことができる。It should be noted that other resins and additives can be added to the insulating paint within a range that does not impair the effects of the present invention. Further, in the present invention, the application and baking layer of the insulating paint is not provided directly on the conductor, but other insulating layers, for example,
It may be provided via a coating baking layer of an insulating paint containing no inorganic filler, and on the coating baking layer of the above-mentioned insulating paint, as an overcoat layer, a coating of an insulating paint also containing no inorganic filler. A coating baking layer may be provided. With such a configuration, although the corona resistance and the thermal conductivity are slightly reduced, the flexibility and coil winding workability can be improved.
【００１６】このようにして得られる本発明の絶縁電線
は、耐コロナ性に優れるだけでなく、熱伝導性、絶縁特
性、可とう性など、絶縁電線に要求されるその他の特性
にも優れているため、かかる特性が要求される用途、た
とえば高圧モータや高圧トランス用巻線として有用であ
る。The insulated wire of the present invention thus obtained is not only excellent in corona resistance but also excellent in other properties required for the insulated wire, such as thermal conductivity, insulation properties and flexibility. Therefore, it is useful as an application requiring such characteristics, for example, as a winding for a high-voltage motor or a high-voltage transformer.
【００１７】すなわち、本発明の電気機器は、このよう
な絶縁電線からなる絶縁コイルを具備したもので、機器
の信頼性を向上させることができるとともに、機器の小
型化、高出力化を図ることができる。That is, the electric device of the present invention is provided with the insulated coil made of such an insulated wire, so that the reliability of the device can be improved, and the size and output of the device can be reduced. Can be.
【００１８】このように本発明の絶縁電線においては、
導体外周に特定の無機充填剤を配合した絶縁塗料による
塗布焼付層を設けているので、外径を大径化することな
く耐コロナ性を向上させることができ、しかも、ピンホ
ールの発生が防止されるとともに、コイル成形性や絶縁
特性など、絶縁電線に要求されるその他の特性にも優れ
たものとすることができる。Thus, in the insulated wire of the present invention,
The outer periphery of the conductor is provided with a coating and baking layer made of insulating paint containing a specific inorganic filler, so that corona resistance can be improved without increasing the outer diameter, and pinholes are prevented. In addition to the above, it is possible to provide other characteristics required for the insulated wire, such as coil formability and insulation characteristics.
【００１９】また、本発明の電気機器においては、この
ような優れた特性を有する絶縁電線を用いているため、
信頼性の向上、機器の小型化、高出力化が可能となる。Further, in the electric device of the present invention, since the insulated wire having such excellent characteristics is used,
Improvements in reliability, miniaturization of equipment, and high output can be achieved.
【００２０】[0020]
【発明の実施の形態】以下、本発明を実施例によりさら
に詳細に説明する。 実施例１ ポリイミド樹脂ワニス（昭和電線電纜社製 商品名 E70
4 ）に、その樹脂分 100重量部あたり炭化珪素（粒径
0.1〜1 μｍ、昭和電工社製 商品名 ウルトラデンシ
ック DU A-1 ）30重量部を添加混合して絶縁塗料を調製
した。次いで、この絶縁塗料を 1.0mmφの銅導体上に 8
回塗布焼付けることを繰り返して、塗膜厚35μｍの絶縁
電線を製造した。なお、焼付は、炉長 6ｍの焼付機を用
いて、線速 8m/分、温度 270〜390 ℃の条件で行った。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail by way of examples. Example 1 Polyimide resin varnish (trade name E70, manufactured by Showa Densen Densha Co., Ltd.)
4) Silicon carbide (particle size: 100 parts by weight)
0.1 to 1 μm, manufactured by Showa Denko KK Ultradensic DU A-1) 30 parts by weight were added and mixed to prepare an insulating paint. Next, apply this insulating paint on a 1.0 mmφ copper conductor for 8 mm.
The coating and baking was repeated to produce an insulated wire having a coating thickness of 35 μm. The baking was performed using a baking machine with a furnace length of 6 m at a linear speed of 8 m / min and a temperature of 270 to 390 ° C.
【００２１】実施例２〜４ 絶縁塗料の組成およびその焼付条件を、表１に示すよう
に変えた以外は、実施例１と同様にして、絶縁電線を製
造した。Examples 2 to 4 Insulated wires were manufactured in the same manner as in Example 1 except that the composition of the insulating paint and the baking conditions were changed as shown in Table 1.
【００２２】実施例５〜９ 絶縁塗料の組成およびその焼付条件を、表１に示すよう
に変えるとともに、この絶縁塗料を、 1.0mmφの銅導体
上に前記塗料のベースのワニス、すなわち、炭化珪素を
含有しない樹脂ワニスを 6回塗布焼付けて形成した塗膜
上に、 2回それぞれ塗布焼付けるようにした以外は、実
施例１の場合と同様にして絶縁電線を製造した。なお、
樹脂ワニスの焼付も、絶縁塗料の場合と同一条件とし
た。Examples 5 to 9 The composition of the insulating paint and the baking conditions were changed as shown in Table 1, and the insulating paint was coated on a copper conductor of 1.0 mmφ by using a varnish as a base of the paint, ie, silicon carbide. An insulated wire was manufactured in the same manner as in Example 1 except that the resin varnish containing no was applied and baked twice on a coating film formed by applying and baking six times. In addition,
The baking of the resin varnish was performed under the same conditions as those for the insulating paint.
【００２３】得られた各実施例の絶縁電線について耐コ
ロナ性などの性能評価を行った。結果を表１下欄に示
す。なお、性能評価のうち、耐コロナ性は、 2ヶ撚りし
た絶縁電線に室温で 2kVの交流電圧（60Hz) を印加し、
漏洩電流が10mAに達するまでの時間（hr）を測定して評
価した（以下の実施例において同じ。）。The insulated wires of each of the obtained examples were evaluated for performance such as corona resistance. The results are shown in the lower column of Table 1. In the performance evaluation, the corona resistance was measured by applying an AC voltage of 2 kV (60 Hz) to the two twisted insulated wires at room temperature.
The time (hr) until the leakage current reached 10 mA was measured and evaluated (the same applies in the following examples).
【００２４】[0024]
【表１】 実施例１０ ポリイミド樹脂ワニス（昭和電線電纜社製 商品名 E70
4 ）に、その樹脂分 100重量部あたり乾式シリカ（粒径
0.01〜0.1 μｍ、日本アエロジル社製 商品名アエロジ
ル #200 ）10重量部を添加混合して絶縁塗料を調製し
た。次いで、この絶縁塗料を 1.0mmφの銅導体上に 8回
塗布焼付けることを繰り返して、塗膜厚35μｍの絶縁電
線を製造した。なお、焼付は、炉長 6ｍの焼付機を用い
て、線速 8m/分、温度 270〜390 ℃の条件で行った。[Table 1] Example 10 Polyimide resin varnish (trade name: E70, manufactured by Showa Densen Densha Co., Ltd.)
4) Dry silica (particle size) per 100 parts by weight of resin
0.01 to 0.1 μm, manufactured by Nippon Aerosil Co., Ltd., trade name Aerosil # 200) 10 parts by weight were added and mixed to prepare an insulating paint. Next, this insulating paint was repeatedly applied and baked eight times on a copper conductor of 1.0 mmφ to produce an insulated wire having a coating thickness of 35 μm. The baking was performed using a baking machine with a furnace length of 6 m at a linear speed of 8 m / min and a temperature of 270 to 390 ° C.
【００２５】実施例１１〜１３ 絶縁塗料の組成およびその焼付条件を、表２に示すよう
に変えた以外は、実施例１０と同様にして、絶縁電線を
製造した。Examples 11 to 13 Insulated wires were manufactured in the same manner as in Example 10, except that the composition of the insulating paint and the baking conditions were changed as shown in Table 2.
【００２６】実施例１４〜１８ 絶縁塗料の組成およびその焼付条件を、表２に示すよう
に変えるとともに、この絶縁塗料を、 1.0mmφの銅導体
上に前記塗料のベースのワニス、すなわち、炭化珪素を
含有しない樹脂ワニスを 6回塗布焼付けて形成した塗膜
上に、 2回それぞれ塗布焼付けるようにした以外は、実
施例１０の場合と同様にして絶縁電線を製造した。な
お、樹脂ワニスの焼付も、絶縁塗料の場合と同一条件と
した。Examples 14 to 18 The composition of the insulating paint and the baking conditions were changed as shown in Table 2, and this insulating paint was coated on a copper conductor of 1.0 mmφ by using a varnish as a base of the paint, ie, silicon carbide. An insulated wire was manufactured in the same manner as in Example 10 except that the resin varnish containing no was coated and baked twice on a coating film formed by coating and baking six times . The baking of the resin varnish was performed under the same conditions as those for the insulating paint.
【００２７】得られた各実施例の絶縁電線について耐コ
ロナ性などの性能評価を行った。結果を表２下欄に示
す。The insulated wires obtained in the examples were evaluated for performance such as corona resistance. The results are shown in the lower column of Table 2.
【００２８】[0028]
【表２】 実施例１９ ポリイミド樹脂ワニス（昭和電線電纜社製 商品名 E70
4 ）に、その樹脂分 100重量部あたりケイ酸ジルコニウ
ム（粒径 0.2〜6 μｍ、キンセイマテック社製商品名 A
-PAX）10重量部を添加混合して絶縁塗料を調製した。次
いで、この絶縁塗料を 1.0mmφの銅導体上に 8回塗布焼
付けることを繰り返して、塗膜厚35μｍの絶縁電線を製
造した。なお、焼付は、炉長 6ｍの焼付機を用いて、線
速 8m/分、温度 270〜390 ℃の条件で行った。[Table 2] Example 19 Polyimide resin varnish (trade name: E70, manufactured by Showa Electric Wire & Cable Co., Ltd.)
4) Zirconium silicate (particle size: 0.2 to 6 µm, Kinseima Tech's trade name A
-PAX) was added and mixed to prepare an insulating paint. Next, this insulating paint was repeatedly applied and baked eight times on a copper conductor of 1.0 mmφ to produce an insulated wire having a coating thickness of 35 μm. The baking was performed using a baking machine with a furnace length of 6 m at a linear speed of 8 m / min and a temperature of 270 to 390 ° C.
【００２９】実施例２０〜２２ 絶縁塗料の組成およびその焼付条件を、表３に示すよう
に変えた以外は、実施例１９と同様にして、絶縁電線を
製造した。Examples 20 to 22 Insulated wires were manufactured in the same manner as in Example 19 except that the composition of the insulating paint and the baking conditions were changed as shown in Table 3.
【００３０】実施例２３〜２７ 絶縁塗料の組成およびその焼付条件を、表３に示すよう
に変えるとともに、この絶縁塗料を、 1.0mmφの銅導体
上に前記塗料のベースのワニス、すなわち、炭化珪素を
含有しない樹脂ワニスを 6回塗布焼付けて形成した塗膜
上に、 2回それぞれ塗布焼付けるようにした以外は、実
施例１９の場合と同様にして絶縁電線を製造した。な
お、樹脂ワニスの焼付も、絶縁塗料の場合と同一条件と
した。Examples 23 to 27 The composition of the insulating paint and the baking conditions were changed as shown in Table 3, and the insulating paint was coated on a copper conductor of 1.0 mmφ by using a varnish as a base of the paint, ie, silicon carbide. An insulated wire was manufactured in the same manner as in Example 19, except that a resin varnish containing no was applied and baked twice on a coating film formed by baking six times. The baking of the resin varnish was performed under the same conditions as those for the insulating paint.
【００３１】得られた各実施例の絶縁電線について耐コ
ロナ性などの性能評価を行った。結果を表３下欄に示
す。The insulated wires obtained in the respective examples were evaluated for performance such as corona resistance. The results are shown in the lower column of Table 3.
【００３２】[0032]
【表３】 実施例２８ ポリイミド樹脂ワニス（昭和電線電纜社製 商品名 E70
4 ）に、その樹脂分 100重量部あたり酸化マグネシウム
（粒径 0.5〜10μｍ、神島化学工業社製 商品名 スタ
ーマグ M）10重量部を添加混合して絶縁塗料を調製し
た。次いで、この絶縁塗料を 1.0mmφの銅導体上に 8回
塗布焼付けることを繰り返して、塗膜厚35μｍの絶縁電
線を製造した。なお、焼付は、炉長 6ｍの焼付機を用い
て、線速 8m/分、温度 270〜390 ℃の条件で行った。[Table 3] Example 28 Polyimide resin varnish (trade name: E70, manufactured by Showa Denshi Densha Co., Ltd.)
4) was added and mixed with 10 parts by weight of magnesium oxide (particle size: 0.5 to 10 μm, trade name: Starmag M, manufactured by Kamishima Chemical Industry Co., Ltd.) per 100 parts by weight of the resin component to prepare an insulating paint. Next, this insulating paint was repeatedly applied and baked eight times on a copper conductor of 1.0 mmφ to produce an insulated wire having a coating thickness of 35 μm. The baking was performed using a baking machine with a furnace length of 6 m at a linear speed of 8 m / min and a temperature of 270 to 390 ° C.
【００３３】実施例２９〜３１ 絶縁塗料の組成およびその焼付条件を、表４に示すよう
に変えた以外は、実施例２８と同様にして、絶縁電線を
製造した。Examples 29 to 31 Insulated wires were manufactured in the same manner as in Example 28 except that the composition of the insulating paint and the baking conditions were changed as shown in Table 4.
【００３４】実施例３２〜３６ 絶縁塗料の組成およびその焼付条件を、表４に示すよう
に変えるとともに、この絶縁塗料を、 1.0mmφの銅導体
上に前記塗料のベースのワニス、すなわち、炭化珪素を
含有しない樹脂ワニスを 6回塗布焼付けて形成した塗膜
上に、 2回それぞれ塗布焼付けるようにした以外は、実
施例２８の場合と同様にして絶縁電線を製造した。な
お、樹脂ワニスの焼付も、絶縁塗料の場合と同一条件と
した。Examples 32 to 36 The composition of the insulating paint and the baking conditions were changed as shown in Table 4, and the insulating paint was coated on a copper conductor of 1.0 mmφ by using the base varnish of the paint, ie, silicon carbide. An insulated wire was manufactured in the same manner as in Example 28, except that a resin varnish containing no was coated and baked six times on a coating film formed by baking six times. The baking of the resin varnish was performed under the same conditions as those for the insulating paint.
【００３５】得られた各実施例の絶縁電線について耐コ
ロナ性などの性能評価を行った。結果を表４下欄に示
す。The insulated wires of each of the obtained examples were evaluated for performance such as corona resistance. The results are shown in the lower column of Table 4.
【００３６】[0036]
【表４】 なお、表１〜４中、比較例１〜４として示したのは、実
施例で用いたポリイミド樹脂ワニス、ポリアミドイミド
樹脂ワニス、ポリイミドヒダントイン変性ポリエステル
樹脂ワニスおよびポリエステルイミド樹脂ワニスをそれ
ぞれ単独で塗布焼付けて得た塗膜厚35μｍの絶縁電線の
例であり、本発明との比較のために示したものである。[Table 4] In Tables 1 to 4, Comparative Examples 1 to 4 show the polyimide resin varnish, polyamide imide resin varnish, polyimide hydantoin-modified polyester resin varnish and polyester imide resin varnish used in Examples alone, respectively, and baked. This is an example of an insulated wire having a coating thickness of 35 μm obtained as described above, and is shown for comparison with the present invention.
【００３７】以上の各表からも明らかなように、本発明
にかかる絶縁電線は、耐コロナ性が良好で、かつ、可と
う性や高温絶縁破壊電圧特性にも優れている。As is clear from the above tables, the insulated wire according to the present invention has good corona resistance, and also has excellent flexibility and high-temperature breakdown voltage characteristics.
【００３８】[0038]
【発明の効果】以上の実施例からも明らかなように、本
発明の絶縁電線は、塗膜厚が薄くても優れた耐コロナ性
を示し、かつ、可とう性や高温絶縁破壊電圧特性にも優
れている。したがって、かかる特性が要求される高圧モ
ータや高圧トランス用巻線などとして有用で、これを用
いて信頼性が高く、かつ、小型で高出力の電気機器を提
供することが可能となる。As is clear from the above examples, the insulated wire of the present invention exhibits excellent corona resistance even with a thin coating film, and has excellent flexibility and high-temperature dielectric breakdown voltage characteristics. Is also excellent. Therefore, it is useful as a high-voltage motor, a high-voltage transformer winding, or the like that requires such characteristics, and it is possible to provide a small, high-output electric device with high reliability by using this.
【００３９】[0039]
───────────────────────────────────────────────────── フロントページの続き (72)発明者 金光 大 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (72)発明者 平野 辰美 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (72)発明者 三井 久安 神奈川県横浜市鶴見区末広町２丁目４番地 株式会社東芝京浜事業所内 (72)発明者 伊藤 善博 三重県三重郡朝日町縄生2121 株式会社東 芝三重工場内 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kanemitsu Osamu Oda Sakae Cable Co., Ltd. 2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture (72) Inventor Tatsumi Hirano 2, Oda Ei, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture No. 1-1, Showa Electric Wire & Cable Co., Ltd. (72) Inventor Kui Mitsui 2-4, Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture, Japan Inside Toshiba Keihin Works Co., Ltd. (72) Inventor Yoshihiro Ito Asahimachi, Mie-gun 2121 Inside Toshiba Mie Plant
Claims (8)
イ酸ジルコニウムおよび酸化マグネシウムからなる無機
充填剤群より選ばれた少なくとも 1種を含有する絶縁塗
料の塗布焼付層を具備してなることを特徴とする絶縁電
線。1. A conductor baking layer of an insulating paint containing at least one selected from the group consisting of inorganic fillers consisting of silicon carbide, fumed silica, zirconium silicate and magnesium oxide, on the outer periphery of a conductor. Characterized insulated wires.
分として含有する塗料であることを特徴とする請求項１
記載の絶縁電線。2. The insulating paint according to claim 1, wherein the insulating paint is a paint containing a polyimide resin as a resin component.
The insulated wire as described.
状であることを特徴とする請求項１または２記載の絶縁
電線。3. The insulated wire according to claim 1, wherein the inorganic filler is a powder having a particle size of 10 μm or less.
つ、その絶縁塗料中の含有量が、樹脂分 100重量部あた
り 5〜100 重量部であることを特徴とする請求項１乃至
３のいずれか 1項記載の絶縁電線。4. The method according to claim 1, wherein the inorganic filler is silicon carbide powder, and its content in the insulating coating is 5 to 100 parts by weight per 100 parts by weight of the resin component. The insulated wire according to any one of the above.
つ、その絶縁塗料中の含有量が、樹脂分 100重量部あた
り 2〜50重量部であることを特徴とする請求項１乃至３
のいずれか 1項記載の絶縁電線。5. The method according to claim 1, wherein the inorganic filler is fumed silica, and the content of the inorganic filler is 2 to 50 parts by weight per 100 parts by weight of the resin component.
The insulated wire according to any one of the above.
であり、かつ、その絶縁塗料中の含有量が、樹脂分 100
重量部あたり 5〜100 重量部であることを特徴とする請
求項１乃至３のいずれか 1項記載の絶縁電線。6. The inorganic filler is zirconium silicate powder, and the content of the inorganic filler in the insulating paint is 100% or less.
The insulated wire according to any one of claims 1 to 3, wherein the amount is 5 to 100 parts by weight per part by weight.
あり、かつ、その絶縁塗料中の含有量が、樹脂分 100重
量部あたり 5〜100 重量部であることを特徴とする請求
項１乃至３のいずれか 1項記載の絶縁電線。7. The method according to claim 1, wherein the inorganic filler is magnesium oxide powder, and its content in the insulating coating is 5 to 100 parts by weight per 100 parts by weight of the resin component. The insulated wire according to any one of the above.
縁電線からなる絶縁コイルを具備したことを特徴とする
電気機器。8. An electric device comprising an insulated coil comprising the insulated wire according to claim 1. Description:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33562696A JP3471546B2 (en) | 1996-12-16 | 1996-12-16 | Insulated wire and electric equipment using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33562696A JP3471546B2 (en) | 1996-12-16 | 1996-12-16 | Insulated wire and electric equipment using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10172354A true JPH10172354A (en) | 1998-06-26 |
| JP3471546B2 JP3471546B2 (en) | 2003-12-02 |
Family
ID=18290703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33562696A Expired - Fee Related JP3471546B2 (en) | 1996-12-16 | 1996-12-16 | Insulated wire and electric equipment using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3471546B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004253233A (en) * | 2003-02-20 | 2004-09-09 | Daikin Ind Ltd | Inorganic powder-containing resin-coated electric wire, two-layer coated electric wire, inorganic powder-containing resin-coated coil, two-layer coated electric wire coil, inorganic material-coated insulating coil and method of manufacturing the same, and electric device having inorganic material-coated insulating coil and manufacturing thereof Method |
| JP2006034042A (en) * | 2004-07-20 | 2006-02-02 | Yaskawa Electric Corp | Thermosetting resin composite for vacuum and its production |
| KR100709818B1 (en) | 1998-05-30 | 2007-04-23 | 제너럴 일렉트릭 캄파니 | Method for preventing corona surface damage of end windings of air-cooled motors and generators |
| JP2007141507A (en) * | 2005-11-15 | 2007-06-07 | Sumitomo Electric Ind Ltd | Insulated wire and electric coil using the same |
| CN102682907A (en) * | 2012-05-08 | 2012-09-19 | 江苏珠影特种电缆有限公司 | Fireproof high-temperature-resistant power cable |
| CN115717030A (en) * | 2022-12-08 | 2023-02-28 | 江苏泰力松新材料有限公司 | A kind of polyamide-imide composite film and preparation method thereof |
-
1996
- 1996-12-16 JP JP33562696A patent/JP3471546B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100709818B1 (en) | 1998-05-30 | 2007-04-23 | 제너럴 일렉트릭 캄파니 | Method for preventing corona surface damage of end windings of air-cooled motors and generators |
| JP2004253233A (en) * | 2003-02-20 | 2004-09-09 | Daikin Ind Ltd | Inorganic powder-containing resin-coated electric wire, two-layer coated electric wire, inorganic powder-containing resin-coated coil, two-layer coated electric wire coil, inorganic material-coated insulating coil and method of manufacturing the same, and electric device having inorganic material-coated insulating coil and manufacturing thereof Method |
| JP4617634B2 (en) * | 2003-02-20 | 2011-01-26 | ダイキン工業株式会社 | Manufacturing method of electrical equipment |
| JP2006034042A (en) * | 2004-07-20 | 2006-02-02 | Yaskawa Electric Corp | Thermosetting resin composite for vacuum and its production |
| JP2007141507A (en) * | 2005-11-15 | 2007-06-07 | Sumitomo Electric Ind Ltd | Insulated wire and electric coil using the same |
| CN102682907A (en) * | 2012-05-08 | 2012-09-19 | 江苏珠影特种电缆有限公司 | Fireproof high-temperature-resistant power cable |
| CN115717030A (en) * | 2022-12-08 | 2023-02-28 | 江苏泰力松新材料有限公司 | A kind of polyamide-imide composite film and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3471546B2 (en) | 2003-12-02 |
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