JPH10223052A - Multilayer insulated wire and transformer using it - Google Patents
Multilayer insulated wire and transformer using itInfo
- Publication number
- JPH10223052A JPH10223052A JP9026433A JP2643397A JPH10223052A JP H10223052 A JPH10223052 A JP H10223052A JP 9026433 A JP9026433 A JP 9026433A JP 2643397 A JP2643397 A JP 2643397A JP H10223052 A JPH10223052 A JP H10223052A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- wire
- insulated wire
- carboxylic acid
- transformer
- 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
- 239000011342 resin composition Substances 0.000 claims abstract description 15
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims abstract description 12
- CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical compound OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004020 conductor Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 claims description 3
- 125000005591 trimellitate group Chemical group 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 229920001225 polyester resin Polymers 0.000 claims description 2
- 239000004645 polyester resin Substances 0.000 claims description 2
- 229920005992 thermoplastic resin Polymers 0.000 claims 1
- 229920005989 resin Polymers 0.000 abstract description 19
- 239000011347 resin Substances 0.000 abstract description 19
- 229920006230 thermoplastic polyester resin Polymers 0.000 abstract description 13
- -1 polyethylene terephthalate Polymers 0.000 abstract description 9
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract description 6
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 6
- 125000000217 alkyl group Chemical group 0.000 abstract description 2
- 150000002148 esters Chemical class 0.000 abstract 3
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 abstract 2
- ARCGXLSVLAOJQL-UHFFFAOYSA-N trimellitic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 abstract 2
- 229920001748 polybutylene Polymers 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 43
- 238000004804 winding Methods 0.000 description 22
- 230000015556 catabolic process Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 3
- 229920006122 polyamide resin Polymers 0.000 description 3
- 239000011112 polyethylene naphthalate Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 229920000554 ionomer Polymers 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229920003189 Nylon 4,6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000002320 enamel (paints) Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- CTJJGIVJOBVMEO-UHFFFAOYSA-N tetraoctyl benzene-1,2,4,5-tetracarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC(C(=O)OCCCCCCCC)=C(C(=O)OCCCCCCCC)C=C1C(=O)OCCCCCCCC CTJJGIVJOBVMEO-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Coils Of Transformers For General Uses (AREA)
- Insulated Conductors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、絶縁層が２層以上
になっている多層絶縁電線とそれを用いた変圧器に関
し、さらに詳しくは、半田付け性にすぐれ、電気・電子
機器などに組み込む変圧器の巻線やリード線として有用
な絶縁電線とそれを用いた変圧器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multilayer insulated wire having two or more insulating layers and a transformer using the same, and more particularly, to a transformer having excellent solderability and being incorporated in electric / electronic equipment. The present invention relates to an insulated wire useful as a winding or a lead wire of a transformer and a transformer using the same.
【０００２】変圧器の構造は、ＩＥＣ規格（Internatio
nal Electrotechnical Communication Standard)Pub.95
0 などによって規定されている。即ち、これらの規格で
は、巻線において導体を被覆するエナメル皮膜は絶縁層
と認定しない、一次巻線と二次巻線の間には少なくとも
３層の絶縁層が形成されているか又は絶縁層の厚みは
０．４mm以上であること、一次巻線と二次巻線の沿面距
離は、印加電圧によっても異なるが、たとえば５mm以上
であることまた一次側と二次側に３０００Ｖを印加した
時に１分以上耐えること、などが規定されている。その
ため、現在、主流の座を占めている変圧器では、図２で
例示するような断面構造が採用されている。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
されたのち、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が巻回された構造であ
る。[0002] The structure of a transformer conforms to the IEC standard (Internatio).
nal Electrotechnical Communication Standard) Pub. 95
It is specified by 0. That is, in these standards, the enamel coating that covers the conductor in the winding is not recognized as an insulating layer. At least three insulating layers are formed between the primary winding and the secondary winding, or the insulating layer The thickness is 0.4 mm or more, and the creepage distance between the primary winding and the secondary winding varies depending on the applied voltage. For example, the thickness is 5 mm or more, and when 3000 V is applied to the primary side and the secondary side, it is 1 mm. It is specified that it can withstand more than a minute. For this reason, a transformer occupying the mainstream at present adopts a cross-sectional structure as illustrated in FIG. An enamel-coated primary winding 4 is wound in a state in which insulation barriers 3 for securing a creepage distance are arranged at both ends of the peripheral surface of the bobbin 2, and then an insulating tape is placed on the primary winding 4. 5 is wound around at least three layers, an insulating barrier 3 for securing a creepage distance is arranged on the insulating tape, and then a secondary winding 6 also covered with enamel is wound.
【０００３】ところで、近年図２に示した断面構造のト
ランスに代わり、図１で示したように、絶縁バリヤ３や
絶縁テープ層５を含まない構造の変圧器が登場しはじめ
ている。この変圧器は図２の構造の変圧器に比べて、全
体を小型化することができ、また、絶縁テープの巻回し
作業を省略できるなどの利点を備えている。図１で示し
た変圧器を製造する場合、用いる１次巻線４及び２次巻
線６では、いずれか一方もしくは両方の導体４ａ（６
ａ）の外周に少なくとも３層の絶縁層４ｂ（６ｂ），４
ｃ（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。このような巻線
として導体の外周に絶縁テープを巻回して１層目の絶縁
層を形成し、更にその上に、絶縁テープを巻回して２層
目の絶縁層、３層目の絶縁層を順次形成して互いに層間
剥離する３層構造の絶縁層を形成するものが知られてい
る。また、ポリウレタンによるエナメル被覆がなされた
導体の外周にフッ素樹脂を順次押出被覆して、全体とし
て３層構造の押出し被覆層を絶縁層とする巻線が知られ
ている（特開平３−５６１１２号公報）。In recent years, instead of the transformer having the cross-sectional structure shown in FIG. 2, a transformer having a structure not including the insulating barrier 3 and the insulating tape layer 5, as shown in FIG. 1, has begun to appear. This transformer is smaller than the transformer having the structure shown in FIG. 2 and has such advantages that the whole operation can be reduced, and the work of winding the insulating tape can be omitted. When the transformer shown in FIG. 1 is manufactured, one or both of the conductors 4a (6) are used in the primary winding 4 and the secondary winding 6 to be used.
At least three insulating layers 4b (6b), 4
The formation of c (6c) and 4d (6d) is necessary in relation to the IEC standard. As such a winding, an insulating tape is wound around an outer periphery of the conductor to form a first insulating layer, and then an insulating tape is wound thereon to form a second insulating layer and a third insulating layer. Are sequentially formed to form an insulating layer having a three-layer structure in which layers are separated from each other. Further, there is known a winding in which a fluororesin is sequentially extruded around an outer periphery of a conductor which is enameled with polyurethane, and an extruded coating layer having a three-layer structure is used as an insulating layer as a whole (Japanese Patent Laid-Open No. 3-56112). Gazette).
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、絶縁テ
ープ巻の場合は、巻回し作業が不可避である為、生産性
は著しく低くなり、その為製造コストは上昇するという
問題点がある。また、フッ素樹脂押出しの場合は、絶縁
層はフッ素系樹脂で形成されているので、耐熱性や層間
剥離性は良好であるという利点を備えているが、逆にい
えば、層間の密着性が悪い為絶縁電線としての信頼性を
確保することが困難である。更には、この絶縁層の場合
は半田浴に浸漬しても除去することができないため、例
えば絶縁電線をリード線に接続するときに行う端末加工
に際しては、端末の絶縁層を信頼性の低い機械的な手段
で剥離しなければならないという問題がある。However, in the case of the insulating tape winding, since the winding operation is inevitable, the productivity is remarkably reduced, and the production cost is increased. In the case of extruding a fluororesin, the insulating layer is formed of a fluororesin, and thus has an advantage that heat resistance and delamination properties are good, but conversely, adhesion between layers is poor. It is difficult to secure the reliability as an insulated wire because it is bad. Furthermore, since this insulating layer cannot be removed even by immersion in a solder bath, for example, when processing the terminal when connecting an insulated wire to a lead wire, the insulating layer of the terminal is made of a low-reliability machine. There is a problem that it has to be peeled off by a special means.
【０００５】このような問題を解決する為に本発明者ら
は１層目と２層目の絶縁層をいずれも変性ポリエステル
系樹脂で押出し被覆し、最外層である３層目の絶縁層を
ポリアミド系樹脂で押出し被覆した絶縁電線を提案した
（特開平７−１７６２１５号公報）。しかし、これらを
使用した絶縁電線においても、次のような点にさらなる
改良が望まれる。すなわち変圧器等の部品類はますます
小型・軽量・薄型化が要求されているが、絶縁電線の電
気特性の経日変化の抑制のために配合している変性樹脂
の影響で熱可塑ポリエステル樹脂の半田付け性を悪化さ
せている。そのため、電線端末の半田付け条件が厳しく
なり半田の熱による絶縁皮膜の溶け揚がりが発生するた
めに、たとえば電線の巻き付け端子部から巻線コイル部
までの距離を確保する対策などが必要になり、部品小型
化の障害になる場合がある。In order to solve such a problem, the present inventors extruded and coated both the first and second insulating layers with a modified polyester resin, and formed a third insulating layer as the outermost layer. An insulated wire extruded and coated with a polyamide resin has been proposed (JP-A-7-176215). However, in the insulated wires using these, further improvements are desired in the following points. In other words, components such as transformers are required to be smaller, lighter and thinner, but thermoplastic polyester resin is affected by the modified resin compounded to suppress the aging of electrical characteristics of insulated wires. Has deteriorated solderability. Therefore, the soldering condition of the wire ends becomes severe and the insulation film melts and rises due to the heat of the solder.For example, it is necessary to take measures such as securing a distance from the winding terminal portion of the wire to the winding coil portion. This may be an obstacle to miniaturization of parts.
【０００６】本発明は、従来の絶縁電線における上記の
問題を解決し、半田付け性に優れ、ＩＥＣ９５０規格を
満足する耐熱性（Ｅ種＝１２０℃）を有する絶縁電線と
それを用いた変圧器の提供を目的とする。The present invention solves the above-mentioned problems in the conventional insulated wire, has excellent solderability, and has heat resistance (E class = 120 ° C.) satisfying the IEC950 standard, and a transformer using the same. The purpose is to provide.
【０００７】[0007]
【課題を解決するための手段】上記した目的を達成する
ために、本発明においては、導体素線上、あるいは導体
素線または絶縁心線を複数本撚りあわせた多心撚り線の
外側に、少なくとも２層の絶縁層を有する多層絶縁電線
において、少なくとも１層が熱可塑性ポリエステル樹脂
１００重量部に対して芳香族カルボン酸エステルを３〜
３０重量部配合した樹脂組成物を押出被覆したことを特
徴とする多層絶縁電線およびそれを用いた変圧器が提供
される。In order to achieve the above object, in the present invention, at least a conductor wire or an outer conductor of a multi-strand wire in which a plurality of conductor wires or insulated core wires are twisted together is provided. In a multilayer insulated wire having two insulating layers, at least one layer contains 3 to 4 parts by weight of an aromatic carboxylic acid ester per 100 parts by weight of a thermoplastic polyester resin.
A multilayer insulated wire characterized by being extrusion-coated with a resin composition mixed with 30 parts by weight, and a transformer using the same are provided.
【０００８】[0008]
【発明の実施の形態】本発明の多層絶縁電線において
は、絶縁層の少なくとも１層に、熱可塑性ポリエステル
樹脂１００重量部に対して芳香族カルボン酸エステル３
〜３０重量部配合した樹脂組成物を用いる。熱可塑性ポ
リエステル樹脂は公知の方法で多価アルコールと芳香族
ジカルボン酸より重縮合し合成されるもので、たとえば
ポリエチレンテレフタレート樹脂（ＰＥＴ）、ポリブチ
レンナフタレート樹脂（ＰＢＮ）、ポリエチレンナフタ
レート樹脂（ＰＥＮ）、ポリシクロヘキサンジメタンテ
レフタレート樹脂（ＰＣＴ）等が使用できる。また、熱
可塑性ポリエステル樹脂に配合する芳香族カルボン酸エ
ステルとしては、特にフタル酸ジアルキルエステル、ト
リメリット酸トリアルキルエステル、ピロメリット酸テ
トラアルキルエステルが好ましく、アルキル基が２−エ
チルヘキシル基もしくはｎ−オクチル基であるものが好
ましい。なお、脂肪族カルボン酸エステルは上記熱可塑
ポリエステルの混練り時に分解が激しく電線外観・特性
が悪化し使用できない。BEST MODE FOR CARRYING OUT THE INVENTION In the multilayer insulated wire of the present invention, at least one of the insulating layers contains aromatic carboxylic acid ester 3 per 100 parts by weight of thermoplastic polyester resin.
Use a resin composition mixed with 配合 30 parts by weight. The thermoplastic polyester resin is synthesized by polycondensation of a polyhydric alcohol and an aromatic dicarboxylic acid by a known method, and is, for example, a polyethylene terephthalate resin (PET), a polybutylene naphthalate resin (PBN), or a polyethylene naphthalate resin (PEN). ), Polycyclohexanedimethane terephthalate resin (PCT) and the like. As the aromatic carboxylic acid ester to be mixed with the thermoplastic polyester resin, dialkyl phthalate, trialkyl trimellitate, and tetraalkyl pyromellitic acid are particularly preferable, and the alkyl group is a 2-ethylhexyl group or n-octyl. Those which are groups are preferred. In addition, the aliphatic carboxylic acid ester cannot be used due to severe decomposition when the thermoplastic polyester is kneaded, resulting in deterioration of the electric wire appearance and characteristics.
【０００９】また、芳香族カルボン酸エステルの配合量
は、熱可塑性ポリエステル樹脂１００重量部に対して３
〜３０重量部とすることで熱可塑性ポリエステル樹脂単
独使用の場合に起こる電気特性の経日変化の問題をほぼ
解決でき、しかも半田付け性を悪化させる成分も含まな
いために半田付け性も良好に発現することができる。な
お、芳香族カルボン酸エステルの配合量が３重量部以下
では、電線の電気特性の経日変化が著しく悪くなり、３
０重量部以上では電線の外観および耐熱特性が低下す
る。The compounding amount of the aromatic carboxylic acid ester is 3 parts per 100 parts by weight of the thermoplastic polyester resin.
By setting the content to 30 parts by weight, it is possible to almost solve the problem of the aging of the electrical characteristics which occurs when the thermoplastic polyester resin is used alone, and also has good solderability because it does not contain a component that deteriorates solderability. Can be expressed. If the amount of the aromatic carboxylic acid ester is less than 3 parts by weight, the electrical characteristics of the electric wire change over time is remarkably deteriorated.
If the amount is more than 0 parts by weight, the appearance and heat resistance of the electric wire deteriorate.
【００１０】本発明の絶縁電線においては、絶縁層の少
なくとも１層は本発明で特定している樹脂組成物を用い
るが、多層化する場合、他の層に使用可能な樹脂成分と
しては半田付け可能なポリアミド樹脂、ポリウレタン樹
脂等があげられ、特にポリアミド樹脂を主成分とする樹
脂組成物はコイル加工性が優れているため、最上層に用
いることが望ましい。絶縁層形成のための樹脂組成物に
は、半田付け性に支障のない範囲で、他の樹脂や無機フ
ィラー、樹脂添加剤を配合してもかまわない。導体とし
ては、金属裸線または絶縁被覆線の撚り線を用いても良
く。高周波用途には、撚り本数を適宜選択して使用する
ことができる。[0010] In the insulated wire of the present invention, at least one of the insulating layers uses the resin composition specified in the present invention. Possible examples include polyamide resins and polyurethane resins. Particularly, a resin composition containing a polyamide resin as a main component is excellent in coil workability, and therefore, it is desirable to use it for the uppermost layer. The resin composition for forming the insulating layer may contain other resins, inorganic fillers, and resin additives as long as the solderability is not impaired. The conductor may be a bare metal wire or a stranded insulated wire. For high frequency applications, the number of twists can be appropriately selected and used.
【００１１】本発明の多層絶縁電線においては 絶縁層
の少なくとも１層が熱可塑性ポリエステル樹脂１００重
量部に対して可塑剤を３〜３０重量部配合した樹脂組成
物を使用するため、電気特性の経日変化も大きく抑制で
き、しかも半田付け性を良好にすることができる。３層
絶縁電線にする場合には、耐熱性、はんだ付け性、電気
特性等のバランスに優れた前記樹脂組成物で２層分を形
成し、最外層をコイル加工性に優れるポリアミド系樹脂
組成物で形成するとよく、この３層絶縁電線を使用した
変圧器は、ＩＥＣ規格を満足するのはもちろんのこと、
絶縁テープ巻していないので小型化が可能でしかも半田
付け性もよいことからより一層の小型化ができ、厳しい
設計に対しても対応できる。また、２層絶縁電線を変圧
器に使用した場合にも、１次巻線と２次巻線との間に１
層だけ絶縁テープを介在させることで、エナメル線使用
の従来型変圧器に比して小型化が実現できる。In the multilayer insulated wire of the present invention, at least one of the insulating layers uses a resin composition in which 3 to 30 parts by weight of a plasticizer is blended with respect to 100 parts by weight of a thermoplastic polyester resin. Daily changes can be greatly suppressed and solderability can be improved. When a three-layer insulated wire is used, a polyamide-based resin composition in which two layers are formed with the above-mentioned resin composition having an excellent balance of heat resistance, solderability, electrical properties, etc., and the outermost layer is excellent in coil workability. The transformer using this three-layer insulated wire should not only satisfy the IEC standard,
Since it is not wound with an insulating tape, the size can be reduced, and the solderability is good. Therefore, the size can be further reduced, and it is possible to cope with a severe design. Also, when a two-layer insulated wire is used for a transformer, a one-layer insulation wire is required between the primary winding and the secondary winding.
By interposing the insulating tape only in the layer, downsizing can be realized as compared with a conventional transformer using an enameled wire.
【００１２】[0012]
【実施例】以下に本発明の実施例を示す。 実施例１〜４、比較例１〜４ 線径０．４mmの軟銅線もしくは０．１２mmの軟銅線７本
の撚り線上に、表１および表２に示す各層の押出被覆用
樹脂組成物、層厚で、順次押出し被覆して絶縁電線を製
造した（銅線表面処理: 冷凍機油使用）。得られた８種
類の絶縁電線につき、下記の方法で各種特性を評価し、
結果を表１および表２に示した。Examples of the present invention will be described below. Examples 1-4, Comparative Examples 1-4 A resin composition for extrusion coating of each layer shown in Tables 1 and 2 on a soft copper wire having a wire diameter of 0.4 mm or seven stranded wires of 0.12 mm soft copper wire. Thickness was extruded and coated sequentially to produce insulated wires (copper wire surface treatment: using refrigeration oil). For the eight types of insulated wires obtained, various characteristics were evaluated by the following methods.
The results are shown in Tables 1 and 2.
【００１３】1)はんだ付け性 電線の末端約４０mmの部分を温度４００℃の溶融はんだ
に浸漬し、浸漬した３０mmの部分にはんだが付着するま
での時間（秒）を測定。この時間が短いほどはんだ付け
性に優れることを表す。数値はＮ＝３の平均値。 2)耐熱性 ＪＩＳＣ３００３に記載の絶縁破壊電圧の２個より法に
準じて作成したサンプル片を２００℃１６８時間恒温槽
中に入れ熱劣化させた後、絶縁破壊電圧を測定する。こ
の絶縁破壊電圧の残率（熱劣化条件なしにて測定したも
のを１００％とする）が４０％以上あれば、耐熱Ｅ種相
当と判定。 3)経日変化（加湿促進評価） 上記2)と同様に作成したサンプル片を６０℃９５％１６
８時間保持した後、絶縁破壊電圧を測定する。この絶縁
破壊電圧の低下が少ないほど樹脂の結晶化による経日変
化が少ないことを示している。1) Solderability The end of the wire of about 40 mm was immersed in molten solder at a temperature of 400 ° C., and the time (second) until the solder adhered to the immersed 30 mm part was measured. The shorter this time, the better the solderability. The numerical value is the average value of N = 3. 2) Heat resistance A sample piece prepared according to the method based on two of the dielectric breakdown voltages described in JISC3003 is placed in a thermostatic chamber at 200 ° C. for 168 hours to be thermally degraded, and then the dielectric breakdown voltage is measured. When the residual ratio of the dielectric breakdown voltage (measured without thermal degradation conditions is taken as 100%) is 40% or more, it is determined to be equivalent to heat resistance class E. 3) Change over time (evaluation of accelerated humidification)
After holding for 8 hours, the dielectric breakdown voltage is measured. The smaller the decrease in the dielectric breakdown voltage, the smaller the change over time due to the crystallization of the resin.
【００１４】なお、実施例、比較例の絶縁電線製造に用
いた樹脂組成物には以下の材料を用いた。 ＊１：ＰＥＴ樹脂：帝人社製、商品名TR-8550 ＊２：ＰＣＴ変性ＰＥＴ樹脂：東レ社製、商品名エクタ
ー−ＤＡ ＊３：ＰＥＮ樹脂：帝人社製、商品名ＴＲ−８０６０ ＊４：ＤＯＰ（フタル酸ジアルキルC6〜C20）：三菱化
学社製 ＊５：トリメリット酸トリアルキルC4〜C11：三菱化学
社製、商品名Ｄ−1170 ＊６：ピロメリット酸テトラオクチル：旭電化社製、商
品名ＵＬ−１００ ＊７：ナイロン6,6 樹脂：東レ社製、商品名アミランＣ
Ｍ−３００１Ｎ ＊８：ナイロン4,6 樹脂：ユニチカ社製、商品名Ｆ−５
００１ ＊９：アイオノマー樹脂：三井デュポンポリケミカル社
製、商品名ハイミラン１８５５ ＊10：フッ素樹脂：三井デュポンフロロケミカル社製、
商品名テフロン100JThe following materials were used for the resin compositions used in the production of the insulated wires of Examples and Comparative Examples. * 1: PET resin: manufactured by Teijin Limited, trade name TR-8550 * 2: PCT-modified PET resin: manufactured by Toray Industries, trade name Ector-DA * 3: PEN resin: manufactured by Teijin Limited, trade name TR-8060 * 4: DOP (dialkyl phthalate C6-C20): manufactured by Mitsubishi Chemical Corporation * 5: Trialkyl trimellitate C4-C11: manufactured by Mitsubishi Chemical Corporation, trade name D-1170 * 6: Tetraoctyl pyromellitate: manufactured by Asahi Denka Co., Ltd. Trade name UL-100 * 7: Nylon 6,6 resin: Toray Industries, trade name Amiran C
M-3001N * 8: Nylon 4,6 resin: Unitika, trade name F-5
001 * 9: Ionomer resin: manufactured by DuPont-Mitsui Polychemicals Co., Ltd., trade name: Himilan 1855 * 10: Fluororesin: manufactured by DuPont-Mitsui Fluorochemicals Co., Ltd.
Product name Teflon 100J
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【表２】 [Table 2]
【００１７】表１および表２で示した結果から以下のこ
とが明らかになった。実施例１〜４は熱可塑性ポリエス
テル樹脂１００重量部に対して芳香族カルボン酸エステ
ル３〜３０重量部配合した樹脂組成物で絶縁層の少なく
とも１層を形成したため、良好な半田付け性、耐熱性及
び経日変化を示している。From the results shown in Tables 1 and 2, the following became clear. In Examples 1 to 4, at least one insulating layer was formed from a resin composition in which 3 to 30 parts by weight of an aromatic carboxylic acid ester was blended with respect to 100 parts by weight of a thermoplastic polyester resin, so that good solderability and heat resistance were obtained. And changes over time.
【００１８】しかし、比較例１は熱可塑性ポリエステル
樹脂にアイオノマー樹脂を配合した樹脂組成物を絶縁層
に用いたもので、耐熱性、経日変化とも問題ないが半田
付け性が本発明のものに比して劣る。比較例２は絶縁層
をフッ素樹脂のみで形成しているため、耐熱性・、日変
化は問題ないが半田付け性を示さない。比較例３は芳香
族カルボン酸エステルの配合量が本発明の範囲より多す
ぎるため、電線外観が悪い上耐熱性も悪い。比較例４は
ＰＥＴ樹脂に添加剤を配合していないので経日変化が大
きい。However, in Comparative Example 1, a resin composition in which an ionomer resin was blended with a thermoplastic polyester resin was used for the insulating layer, and there was no problem with heat resistance and aging. Inferior to that. In Comparative Example 2, since the insulating layer was formed only of a fluororesin, there was no problem with heat resistance and daily change, but no solderability was exhibited. In Comparative Example 3, since the compounding amount of the aromatic carboxylic acid ester was too large than the range of the present invention, the wire appearance was poor and the heat resistance was poor. In Comparative Example 4, since the additive was not added to the PET resin, the change over time was large.
【００１９】[0019]
【発明の効果】以上の説明で明らかなように、本発明の
多層絶縁電線は、端末加工時には直接半田付けを行うこ
とができ、しかも耐熱Ｅ種レベルも十分満足するもので
あり、変圧器用途にきわめて有用である。As is apparent from the above description, the multilayer insulated wire of the present invention can be directly soldered at the time of terminal processing, and also satisfies the heat resistance class E level sufficiently. Very useful for
【図１】３層絶縁電線を巻線とする構造の変圧器の例を
示す断面図である。FIG. 1 is a cross-sectional view showing an example of a transformer having a structure in which a three-layer insulated wire is wound.
【図２】従来構造の変圧器の１例を示す断面図である。FIG. 2 is a sectional view showing an example of a transformer having a conventional structure.
１ フェライトコア 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 DESCRIPTION OF SYMBOLS 1 Ferrite core 2 Bobbin 3 Insulating barrier 4 Primary winding 4a Conductor 4b, 4c, 4d Insulating layer 5 Insulating tape 6 Secondary winding 6a Conductor 6b, 6c, 6d Insulating layer
Claims (3)
縁心線を複数本撚りあわせた多心撚り線の外側に、少な
くとも２層の絶縁層を有する多層絶縁電線において、少
なくとも１層が熱可塑性ポリエステル樹脂１００重量部
に対して芳香族カルボン酸エステルを３〜３０重量部配
合した樹脂組成物を押出被覆したことを特徴とする多層
絶縁電線。1. A multi-layer insulated wire having at least two insulating layers on a conductor wire or outside a multi-strand wire obtained by twisting a plurality of conductor wires or insulated core wires, wherein at least one layer is made of thermoplastic resin. A multilayer insulated wire, wherein a resin composition containing 3 to 30 parts by weight of an aromatic carboxylic acid ester per 100 parts by weight of a polyester resin is extrusion-coated.
アルキルエステル、トリメリット酸トリアルキルエステ
ル及びピロメリット酸テトラアルキルエステルの群から
選ばれた少なくとも１種であることを特徴とする請求項
１記載の多層絶縁電線。2. The method according to claim 1, wherein the aromatic carboxylic acid ester is at least one selected from the group consisting of dialkyl phthalate, trialkyl trimellitate and tetraalkyl pyromellitic acid. Multi-layer insulated wire.
載の多層絶縁電線を用いた変圧器。3. A transformer using the multilayer insulated wire according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02643397A JP3956415B2 (en) | 1997-02-10 | 1997-02-10 | Multi-layer insulated wire and transformer using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02643397A JP3956415B2 (en) | 1997-02-10 | 1997-02-10 | Multi-layer insulated wire and transformer using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10223052A true JPH10223052A (en) | 1998-08-21 |
| JP3956415B2 JP3956415B2 (en) | 2007-08-08 |
Family
ID=12193388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02643397A Expired - Fee Related JP3956415B2 (en) | 1997-02-10 | 1997-02-10 | Multi-layer insulated wire and transformer using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3956415B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007037417A1 (en) * | 2005-09-30 | 2007-04-05 | The Furukawa Electric Co., Ltd. | Multilayered electric insulated wire and transformer using the same |
| WO2010047261A1 (en) * | 2008-10-20 | 2010-04-29 | 古河電気工業株式会社 | Multilayer insulated wire and transformer using same |
-
1997
- 1997-02-10 JP JP02643397A patent/JP3956415B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007037417A1 (en) * | 2005-09-30 | 2007-04-05 | The Furukawa Electric Co., Ltd. | Multilayered electric insulated wire and transformer using the same |
| JPWO2007037417A1 (en) * | 2005-09-30 | 2009-04-16 | 古河電気工業株式会社 | Multilayer insulated wire and transformer using the same |
| JP4579989B2 (en) * | 2005-09-30 | 2010-11-10 | 古河電気工業株式会社 | Multilayer insulated wire and transformer using the same |
| US8518535B2 (en) | 2005-09-30 | 2013-08-27 | The Furukawa Electric., Ltd. | Multilayer insulated wire and transformer using the same |
| WO2010047261A1 (en) * | 2008-10-20 | 2010-04-29 | 古河電気工業株式会社 | Multilayer insulated wire and transformer using same |
| US8188370B2 (en) | 2008-10-20 | 2012-05-29 | Furukawa Electric Co., Ltd. | Multilayer insulated electric wire and transformer using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3956415B2 (en) | 2007-08-08 |
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