JPH0828131B2 - Resin composition for electric insulation and insulated electric wire - Google Patents
Resin composition for electric insulation and insulated electric wireInfo
- Publication number
- JPH0828131B2 JPH0828131B2 JP32946890A JP32946890A JPH0828131B2 JP H0828131 B2 JPH0828131 B2 JP H0828131B2 JP 32946890 A JP32946890 A JP 32946890A JP 32946890 A JP32946890 A JP 32946890A JP H0828131 B2 JPH0828131 B2 JP H0828131B2
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- molecular weight
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、電気絶縁用樹脂組成物及び絶縁電線に関す
る。The present invention relates to a resin composition for electrical insulation and an insulated wire.
従来、ポリビニルホルマール、ポリウレタン、ポリエ
ステル、ポリエステルイミド、ポリアミドイミドなどの
合成樹脂組成物を導体上に塗布・焼付けてなる絶縁電線
(以下、エナメル線と略す)は、それぞれの塗料の特徴
に応じてモータやトランスなどの各種の用途に使用され
ている。Conventionally, insulated electric wires (hereinafter, abbreviated as enamel wires) obtained by applying and baking a synthetic resin composition such as polyvinyl formal, polyurethane, polyester, polyester imide, and polyamide imide on a conductor are motors depending on the characteristics of each paint. It is used in various applications such as transformers and transformers.
近年、エナメル線を使用する電気メーカでは機器の製
造工程の合理化のため自動高速巻線機を導入するように
なってきており、そのため巻線加工時にエナメル線は、
摩擦や衝撃等により、絶縁層が機械的損傷を受け易くな
り、レヤーショートやアース不良等を生じ、不良率が増
加する問題が強くなっている。そこでこのような機械的
損傷を少なくするため、潤滑性の優れたエナメル線が要
望されている。In recent years, electric manufacturers using enameled wires have begun to introduce automatic high-speed winding machines in order to rationalize the manufacturing process of equipment.
There is a growing problem that the insulating layer is apt to be mechanically damaged by friction, impact, etc., causing a layer short circuit, a grounding failure, etc., and increasing the failure rate. Therefore, in order to reduce such mechanical damage, an enameled wire having excellent lubricity has been demanded.
エナメル線単体では、滑性に乏しいため、これを解決
する手段として従来よりエナメル線の上に流動パラフィ
ン、固型パラフィン、絶縁油、ワックス等を塗布する方
法及び機械的強度、耐摩耗性に優れたナイロン等をオー
バコートする方法が適用されていた。しかし、これらの
方法のうちパラフィン等を塗布する方法では、エナメル
線をモータやトランスに巻線後、含浸ワニスや注型レジ
ンでワニス処理する際、パラフィン、油及びワックス
は、含浸ワニスや注型レジンとの親和性が劣るために接
着不良や、ボイドが発生し易いという問題があった。ま
た、ナイロン等をオーバコートする方法では、アンダコ
ートのエナメル線の焼付線と同条件(炉温、焼付速度な
ど)で焼付けることができないため生産性が低下した
り、また、カットスルー温度などのエナメル線特性を低
下させる場合が多く、さらに価格も高いため、使用範囲
が限定されていた。そこで、エナメル線用合成樹脂塗料
にワックスや低分子量のポリエチレンを分散させた塗料
をアンダコート用塗料と同一条件でオーバコートする方
法が検討されるようになってきている。Since the enameled wire alone has poor lubricity, a method of applying liquid paraffin, solid paraffin, insulating oil, wax, etc. onto the enameled wire has been used as a means to solve this problem, as well as excellent mechanical strength and abrasion resistance. The method of overcoating nylon was applied. However, among these methods, the method of applying paraffin or the like is such that when the enamel wire is wound on a motor or a transformer and then varnished with an impregnating varnish or a casting resin, paraffin, oil, and wax are not treated with the impregnating varnish or casting. Due to the poor affinity with the resin, there are problems such as poor adhesion and easy occurrence of voids. Also, with the method of overcoating nylon, etc., it is not possible to bake under the same conditions (furnace temperature, baking speed, etc.) as the baking wire of the undercoat enamel wire, which reduces productivity and also cut-through temperature etc. In many cases, the enamelled wire characteristics of the product are deteriorated and the price is high, so that the range of use was limited. Therefore, a method of overcoating a synthetic resin paint for enameled wire in which wax or low-molecular-weight polyethylene is dispersed under the same conditions as the undercoating paint has been studied.
しかしながら、ワックス類や低分子量ポリエチレン
は、エナメル線用合成樹脂及び溶剤との相溶性に乏しい
ために、エナメル線用合成樹脂塗料中に分散させようと
しても分散し難く、強力に攪拌するなどの方法で無理に
分散させたとしても、短時間にワックス類や低分子量ポ
リエチレンが分離してくるという欠点があった。However, waxes and low-molecular-weight polyethylene have poor compatibility with synthetic resins for enameled wires and solvents, so it is difficult to disperse them in synthetic resin paints for enameled wires, and methods such as vigorous stirring are used. However, even if it was forced to disperse with, there was a drawback that waxes and low-molecular-weight polyethylene were separated in a short time.
本発明は、前記従来技術の欠点を解消し、滑り性に優
れ、かつ滑剤の分散性が良く、ワニス安定性に優れ、自
己潤滑性皮膜を生じうる電気絶縁用樹脂組成物を提供す
ることにある。The present invention solves the above-mentioned drawbacks of the prior art, and provides a resin composition for electrical insulation, which has excellent slipperiness, good dispersibility of a lubricant, excellent varnish stability, and can form a self-lubricating film. is there.
本発明は、エナメル線用合成樹脂塗料の樹脂分100重
量部に対して (A)部分けん化エステルワックス0.1〜10重量部及び (B)数平均分子量が5000以下の低分子量ポリエチレン
0.1〜10重量部 を配合してなる電気絶縁用樹脂組成物及びこれを導体上
に直接又は他の絶縁物を介して塗布、焼付けてなるエナ
メル線に関する。The present invention relates to (A) 0.1 to 10 parts by weight of a partially saponified ester wax and (B) a low molecular weight polyethylene having a number average molecular weight of 5,000 or less with respect to 100 parts by weight of a resin content of an enamel wire synthetic resin coating material.
The present invention relates to an electrical insulating resin composition containing 0.1 to 10 parts by weight, and an enameled wire obtained by applying and baking the resin composition on a conductor directly or through another insulating material.
本発明に用いる部分けん化エステルワックスとして
は、 〔式中、Rは炭素数28〜32の炭化水素基を表す〕の構造
式で示されるもの及びその誘導体が挙げられ、分子量約
800のものが好ましい。例えば、ヘキストジャパン
(株)製、商品名ヘキストワックスOP、ヘキストワック
スX55、ヘキストワックスO、ヘキストワックスOM、ヘ
キストワックスFLが挙げられる。部分けん化エステルワ
ックス以外のワックスは、(B)成分の低分子量ポリエ
チレンとの相溶性が悪く、分散性が劣る。As the partially saponified ester wax used in the present invention, [Wherein R represents a hydrocarbon group having 28 to 32 carbon atoms] and its derivatives, and the molecular weight is about
800 is preferable. Examples include Hoechst wax OP, Hoechst wax X55, Hoechst wax O, Hoechst wax OM, and Hoechst wax FL manufactured by Hoechst Japan Ltd. Waxes other than the partially saponified ester wax have poor compatibility with the low molecular weight polyethylene as the component (B) and have poor dispersibility.
部分けん化エステルワックスは、塗料の樹脂分100重
量部に対して0.1〜10重量部添加される。添加量が0.1重
量部未満では、滑り性の効果が劣り、10重量部を越える
と、エナメル線の外観が劣る。The partially saponified ester wax is added in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the resin content of the paint. If the addition amount is less than 0.1 part by weight, the effect of slipperiness is poor, and if it exceeds 10 parts by weight, the appearance of the enamel wire is poor.
次に、(B)成分として配合される低分子量ポリエチ
レンとしては、数平均分子量が5000以下のものであれば
良く、特に限定はない。数平均分子量が5000を超える
と、分散性が劣る。また、この低分子量ポリエチレン
は、塗料の樹脂分100重量部に対して0.1〜10重量部配合
される。添加量が0.1重量部未満では滑り性の効果がな
く、10重量部を越えると、エナメル線の外観が極端に低
下する。Next, the low molecular weight polyethylene blended as the component (B) is not particularly limited as long as it has a number average molecular weight of 5000 or less. When the number average molecular weight exceeds 5,000, dispersibility is poor. The low molecular weight polyethylene is added in an amount of 0.1 to 10 parts by weight with respect to 100 parts by weight of the resin content of the coating material. If the amount added is less than 0.1 parts by weight, the effect of slipperiness will not be obtained, and if it exceeds 10 parts by weight, the appearance of the enameled wire will be extremely deteriorated.
部分けん化エステルワックスのみをエナメル線用合成
樹脂塗料に分散させようとしても分散状態が悪く、粗い
不均一分散系となり、短時間に層分離してしまう。Even if only the partially saponified ester wax is attempted to be dispersed in the synthetic resin coating for the enamel wire, the dispersion state is poor and a coarse non-uniform dispersion system is formed, and the layers are separated in a short time.
一方、低分子量ポリエチレンのみを同様にエナメル線
用合成樹脂塗料に分散させた場合には、分散安定性が劣
るばかりでなく、得られたエナメル線表面に大きな凹凸
が生じて、著しく外観が低下する。On the other hand, when only low molecular weight polyethylene is similarly dispersed in the synthetic resin coating for enamel wire, not only the dispersion stability is poor, but also the resulting enamel wire surface has large irregularities, resulting in a marked deterioration in appearance. .
しかし、驚くべきことに上記の部分けん化エステルワ
ックスと低分子量ポリエチレンを併用すれば、分散性が
著しく向上し、経日によっても安定な分散状態を保ち、
これを用いて製造したエナメル線は、外観が良好で、か
つ自己潤滑性にも優れることが見出された。However, surprisingly, when the above partially saponified ester wax and low molecular weight polyethylene are used in combination, the dispersibility is remarkably improved, and a stable dispersed state is maintained even with the passage of time.
It has been found that the enamel wire produced using this has a good appearance and is also excellent in self-lubricating property.
エナメル線用合成樹脂塗料に、部分けん化エステルワ
ックス及び低分子量ポリエチレンを分散させる方法とし
ては、直接に添加しても、うまく分散しないため、ま
ず、溶剤中に部分けん化エステルワックスと低分子量ポ
リエチレンを分散させ、これをエナメル線用合成樹脂塗
料に添加し、分散させる方法が好ましい。溶剤として
は、クレゾール、キシレン等の芳香族炭化水素などが挙
げられる。溶剤分散液中の部分けん化エステルワックス
と低分子量ポリエチレンの含有量は、1〜20重量%が好
ましいが、特に制限はない。As a method of dispersing the partially saponified ester wax and low molecular weight polyethylene in the synthetic resin coating for enamel wire, even if added directly, it does not disperse well.First, disperse the partially saponified ester wax and low molecular weight polyethylene in the solvent. Then, a method of adding this to the synthetic resin paint for enameled wire and dispersing it is preferable. Examples of the solvent include aromatic hydrocarbons such as cresol and xylene. The content of partially saponified ester wax and low molecular weight polyethylene in the solvent dispersion is preferably 1 to 20% by weight, but is not particularly limited.
エナメル線用合成樹脂塗料としては、ポリビニルホル
マール、ポリウレタン、ポリエステル、ポリエステルイ
ミド、ポリアミドイミド等の樹脂を含む塗料がある。Synthetic resin paints for enameled wires include paints containing resins such as polyvinyl formal, polyurethane, polyester, polyester imide, and polyamide imide.
本発明の樹脂組成物を直接に導体に焼付けて、エナメ
ル線を製造することも可能であるが、他の絶縁物を介し
て塗布、焼付けてオーバーコートし、ダブルコート線と
して用いる方が好ましい。Although the resin composition of the present invention can be directly baked on a conductor to produce an enamel wire, it is preferable to apply it through another insulating material, to bake it for overcoating, and to use it as a double-coated wire.
下地用塗布と同じベース樹脂を用いた塗料に部分けん
化エステルワックスと低分子量ポリエチレンを配合した
本発明になる樹脂組成物を用いることによりエナメル線
用合成樹脂塗料の焼付条件と同一条件で目的とする自己
潤滑性ダブルコート線を得ることができる。By using the resin composition according to the present invention in which a partially saponified ester wax and low molecular weight polyethylene are mixed in a paint using the same base resin as the base coating, it is aimed at the same conditions as the baking conditions of the synthetic resin paint for enamel wire. A self-lubricating double-coated wire can be obtained.
以下、本発明を実施例によりさらに詳しく説明する。 Hereinafter, the present invention will be described in more detail with reference to Examples.
実施例1 100gのヘキストワックスOPを1000gのキシレン中で加
熱溶解させ、冷却後、100gの低分子量ポリエチレン(三
井石油化学工業社製商品名三井ハイワックス420M、数平
均分子量4000)を添加して攪拌分散させ、分散液(以
下、分散液Xと称する)を得た。この分散液は、ワック
スとポリエチレンが均一に分散されたペースト状のもの
である。400gのポリエステルワニスWH−4060(日立化成
工業(株)製、樹脂分40重量%)中に5gの分散液Xを添
加して攪拌分散させ、樹脂組成物を得た。Example 1 100 g of Hoechst wax OP was dissolved by heating in 1000 g of xylene, and after cooling, 100 g of low molecular weight polyethylene (Mitsui Petrochemical Industry Co., Ltd. trade name Mitsui High Wax 420M, number average molecular weight 4000) was added and stirred. Dispersion was performed to obtain a dispersion liquid (hereinafter, referred to as dispersion liquid X). This dispersion is a paste in which wax and polyethylene are uniformly dispersed. 5 g of Dispersion X was added to 400 g of polyester varnish WH-4060 (manufactured by Hitachi Chemical Co., Ltd., resin content 40% by weight) and dispersed by stirring to obtain a resin composition.
実施例2 400gのポリエステルワニスWH−4060中に50gの分散液
Xを添加して攪拌分散させ、樹脂組成物を得た。Example 2 50 g of Dispersion X was added to 400 g of polyester varnish WH-4060 and dispersed by stirring to obtain a resin composition.
実施例3 400gのポリエステルワニスWH−4060中に100gの分散液
Xを添加して攪拌分散させ、樹脂組成物を得た。Example 3 100 g of Dispersion X was added to 400 g of polyester varnish WH-4060, and dispersed by stirring to obtain a resin composition.
比較例1 ポリエステルワニスWH−4060をそのまま比較例として
用いた。Comparative Example 1 Polyester varnish WH-4060 was directly used as a comparative example.
比較例2 10gのヘキストワックスOPを100gのキシレンに加熱溶
解させ、分散液(以下、分散液Yと称する)を得た。次
いで、400gのポリエステルワニスWH−4060に10gの分散
液Yを添加して攪拌分散させ、樹脂組成物を得た。Comparative Example 2 10 g of Hoechst wax OP was heated and dissolved in 100 g of xylene to obtain a dispersion liquid (hereinafter, referred to as dispersion liquid Y). Then, 10 g of Dispersion Y was added to 400 g of polyester varnish WH-4060, and the mixture was stirred and dispersed to obtain a resin composition.
比較例3 10gの低分子量ポリエチレン(数平均分子量4000)を1
00gのキシレンに分散させ、分散液(以下、分散液Zと
称する)を得た。400gのポリエステルワニスWH−4060に
10gの分散液Zを添加して攪拌分散させ、樹脂組成物を
得た。Comparative Example 3 1 part of 10 g of low molecular weight polyethylene (number average molecular weight 4000)
Dispersion in 00 g of xylene gave a dispersion (hereinafter referred to as dispersion Z). 400 g of polyester varnish WH-4060
10 g of Dispersion Z was added and dispersed by stirring to obtain a resin composition.
実施例1、2、3及び比較例1、2、3で得られた樹
脂組成物を用いて下記に示す焼付条件に従って直径0.4m
mの銅線に塗布・焼付けを行い、エナメル線を作製し
た。Using the resin compositions obtained in Examples 1, 2, and 3 and Comparative Examples 1, 2, and 3, the diameter was 0.4 m according to the baking conditions shown below.
The copper wire of m was applied and baked to produce an enamel wire.
塗装方法: 下地(WH−4060):ダイス5回(比較例1のシングル
塗装の場合のみは7回) 上地(各実施例又は比較例で得た樹脂組成物):ダイス
2回 焼付け条件 焼付炉 :横型電熱炉(炉長3m) 炉温 :入口/出口=450℃/500℃ 線速 :30m/分 得られたエナメル線の皮膜の特性を下記の方法により
試験し、結果を第1表に示す。Coating method: Base (WH-4060): Dice 5 times (7 times only in case of single coating of Comparative Example 1) Top ground (resin composition obtained in each Example or Comparative Example): Dice 2 times Baking conditions Baking Furnace: Horizontal electric heating furnace (furnace length: 3 m) Furnace temperature: Inlet / outlet = 450 ° C / 500 ° C Linear velocity: 30 m / min The characteristics of the obtained enamel wire coating were tested by the following methods, and the results are shown in Table 1. Shown in.
可とう性試験: JIS C3003、8.1(1)による。Flexibility test: According to JIS C3003, 8.1 (1).
ピンホール試験: JIS C3003、6による。Pinhole test: According to JIS C3003, 6.
絶縁破壊電圧: JIS C3003、11(2)による。Dielectric breakdown voltage: According to JIS C3003, 11 (2).
往復摩耗試験: 1日JIS C3003、10.1による。Reciprocating wear test: According to JIS C3003, 10.1 for 1 day.
静摩擦係数: エナメル線同士間の静摩擦係数を測定するものであ
り、その測定方法は、東洋精機(株)社製の電線滑り試
験器を用い、傾斜台上において4条の電線を同一面上に
末広がり状に張設し、その上にこの4条の電線と交差す
るように別の電線を2条平行に巻いたソリをのせ、これ
を水平位置から徐々に傾斜させ、ソリの滑り開始角度を
タンジェント目盛りで読み取った。なお、ソリの荷重は
100gに設定した。Static friction coefficient: The coefficient of static friction between enameled wires is measured. The measurement method uses an electric wire slip tester manufactured by Toyo Seiki Co., Ltd. Stretch out in a divergent manner, and place another sled in which two wires are wound in parallel so that they intersect with the four wires, and gradually incline it from the horizontal position to set the slid start angle. I read it on the tangent scale. The load of the sled is
It was set to 100g.
分散安定性: 50ccのガラスビンに、樹脂組成物を40g入れ、40℃の
恒温槽に一週間放置後、内容物の分離状態を観察した。Dispersion stability: 40 g of the resin composition was placed in a 50 cc glass bottle and allowed to stand in a thermostat at 40 ° C. for one week, and then the separated state of the contents was observed.
第1表から明らかなように、本発明の実施例で得られ
たエナメル線は、比較例のものに比べ、静摩擦係数が小
さくて滑り性に優れ、外観も良好で、さらに樹脂組成物
の分散安定性にも優れる。 As is apparent from Table 1, the enameled wires obtained in the examples of the present invention have a smaller coefficient of static friction, excellent slipperiness, and a better appearance than those of the comparative examples, and further, the dispersion of the resin composition. Excellent stability.
〔発明の効果〕 本発明の電気絶縁用樹脂組成物は、分散安定性が良好
で、焼付作業性に優れ、これを用いて製造したエナメル
線は、外観が良好で滑り性に優れ、近年の過酷な巻線、
加工、組立作業に適用することができる。[Effects of the Invention] The resin composition for electrical insulation of the present invention has good dispersion stability and excellent workability for baking, and an enamel wire produced using the same has excellent appearance and excellent slipperiness. Harsh winding,
It can be applied to processing and assembly work.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岡田 泰典 茨城県日立市東町4丁目13番1号 日立化 成工業株式会社山崎工場内 (56)参考文献 特開 平1−264106(JP,A) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasunori Okada 4-13-1, Higashimachi, Hitachi City, Ibaraki Prefecture, Hitachi Chemical Co., Ltd. Yamazaki Factory (56) Reference JP-A-1-264106 (JP, A)
Claims (3)
量部に対して (A)部分けん化エステルワックス0.1〜10重量部及び (B)数平均分子量が5000以下の低分子量ポリエチレン
0.1〜10重量部 を配合してなる電気絶縁用樹脂組成物。1. A low molecular weight polyethylene having 0.1 to 10 parts by weight of (A) a partially saponified ester wax and (B) a number average molecular weight of 5,000 or less with respect to 100 parts by weight of a resin content of a synthetic resin coating for an enamel wire.
A resin composition for electrical insulation, which comprises 0.1 to 10 parts by weight.
樹脂塗料である請求項1記載の電気絶縁用樹脂組成物。2. The resin composition for electrical insulation according to claim 1, wherein the synthetic resin paint for enameled wire is a polyester resin paint.
体上に直接又は他の絶縁物を介して塗布、焼付けてなる
絶縁電線。3. An insulated wire obtained by applying and baking the resin composition for electrical insulation according to claim 1 on a conductor directly or through another insulator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32946890A JPH0828131B2 (en) | 1990-11-30 | 1990-11-30 | Resin composition for electric insulation and insulated electric wire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32946890A JPH0828131B2 (en) | 1990-11-30 | 1990-11-30 | Resin composition for electric insulation and insulated electric wire |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04206311A JPH04206311A (en) | 1992-07-28 |
JPH0828131B2 true JPH0828131B2 (en) | 1996-03-21 |
Family
ID=18221718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP32946890A Expired - Lifetime JPH0828131B2 (en) | 1990-11-30 | 1990-11-30 | Resin composition for electric insulation and insulated electric wire |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0828131B2 (en) |
-
1990
- 1990-11-30 JP JP32946890A patent/JPH0828131B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH04206311A (en) | 1992-07-28 |
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