JPH06215635A - Work resistant insulating electric wire - Google Patents

Abstract

PURPOSE:To provide an insulating electric wire which has excellent characteristics of abrasion resistance and excels in work resistance and is suitable for forming a coil at a high speed by an automatic winding machine. CONSTITUTION:A coating material in which polyphenylenesulphite of 0.5 to 30 parts by weight and polytetrafluoroethylene of 0.5 to 30 parts by weight relative to the resin component of 100 parts by weight of a baking type water soluble resin coating material are mixed into the resin coating material, is applied to a conductor covered with a conductor or an insulating layer and then baked. Thereby, an insulating electric wire which has a superb characteristic of abrasion resistance and excels in work resistance is suitable for forming a coil at a high speed by an automatic winding machine.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、優れた耐摩耗特性を具
備し、自動巻線機による高速コイル形成用として好適な
耐加工性に優れた絶縁電線に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulated wire having excellent wear resistance and suitable for forming a high speed coil by an automatic winding machine and having excellent workability.

【０００２】[0002]

【従来の技術】近年、電気機器の製造工程の合理化のた
め、絶縁電線のコイル巻き作業も従来の手巻き作業から
自動巻線機を使用した高速機械巻き作業に移行してき
た。しかしながら、自動巻線機を使用した場合、絶縁電
線は強い張力を受けながら屈曲され、その際に受ける摩
擦も大きい。このため、絶縁電線の絶縁層は、極めて損
傷を受けやすく、製造されたコイル自体の信頼性が著し
く低下する問題が生じた。2. Description of the Related Art In recent years, in order to rationalize the manufacturing process of electric equipment, the coil winding work for insulated wires has been shifted from the conventional manual winding work to a high-speed mechanical winding work using an automatic winding machine. However, when the automatic winding machine is used, the insulated wire is bent while receiving a strong tension, and the friction received at that time is large. For this reason, the insulating layer of the insulated wire is extremely susceptible to damage, which causes a problem that the reliability of the manufactured coil itself is significantly reduced.

【０００３】他方、コイル成型する場合、絶縁電線の占
積率を可能な限り小さくすることが、機器全体の経済
性、使用し易さ等に効果的であり、この為には絶縁電線
に張力をかけて緊密に巻く必要がある。このような絶縁
電線のコイル巻き作業を容易に行わしめる為の重要な因
子としては、絶縁電線相互、あるいは絶縁電線と巻線治
具間での傷のつき難さ、即ち、絶縁電線の絶縁皮膜強度
がある。この絶縁電線の絶縁皮膜強度が強い程、コイル
巻き加工後の絶縁電線の損傷が少ないと言える。On the other hand, in the case of coil forming, it is effective to reduce the space factor of the insulated wire as much as possible in terms of the economical efficiency of the entire equipment, ease of use, and the like. It is necessary to wrap it and wind it tightly. An important factor for facilitating the coiling work of such an insulated wire is that the insulated wires are hardly scratched with each other or between the insulated wire and the winding jig, that is, the insulating film of the insulated wire. There is strength. It can be said that the stronger the insulation coating strength of this insulated wire, the less the damage to the insulated wire after coiling.

【０００４】しかしながら、種々の事情から絶縁電線の
絶縁皮膜の強度を増すための直接的な手段はあまりとら
れておらず、間接的な手法として、絶縁電線の表面に比
較的摩擦係数の低いワックス状の潤滑剤をフエルト等を
用いて塗布したり、あるいは比較的摩擦係数の低いポリ
アミド樹脂等を塗布焼付けたりして絶縁電線表面の摩擦
係数を低下させ、傷の発生を抑えるといった方法がとら
れている。However, due to various reasons, few direct measures are taken to increase the strength of the insulating film of the insulated wire, and as an indirect method, wax having a relatively low friction coefficient is formed on the surface of the insulated wire. It is possible to reduce the friction coefficient on the surface of the insulated wire by using a felt-like lubricant or a polyamide resin, which has a relatively low coefficient of friction, and baking it to prevent scratches. ing.

【０００５】[0005]

【発明が解決しようとする課題】しかしながら、絶縁電
線の表面に潤滑剤をフエルト等で塗布しても、期待した
程の傷防止効果は望めず、また、絶縁電線への潤滑剤塗
布量の調節が非常に困難であることもあり、あまり顕著
な効果を挙げることは出来なかった。また、ポリアミド
樹脂塗料を絶縁電線の最外層に焼付けた場合は、絶縁電
線の摩擦係数自体の低下は望めるが、絶縁電線自体の特
性で失う部分もあり、平均的にはあまり良い方法である
とは言えなかった。However, even if a lubricant is applied to the surface of the insulated wire with a felt or the like, the expected scratch prevention effect cannot be expected, and the amount of lubricant applied to the insulated wire is adjusted. Since it was very difficult, it was not possible to achieve a significant effect. Also, when polyamide resin paint is baked on the outermost layer of the insulated wire, it can be expected that the friction coefficient of the insulated wire itself will decrease, but there are some parts that are lost due to the characteristics of the insulated wire itself, so on average it is a very good method. I couldn't say.

【０００６】[0006]

【課題を解決するための手段】本発明は、絶縁電線自体
に、優れた耐加工性を持たせんとして鋭意研究を行った
結果、優れた耐加工性を具備した絶縁電線を開発し得た
ものである。即ち、本発明の絶縁電線は、焼付型水溶性
樹脂塗料に、当該樹脂塗料中の樹脂分１００重量部に対
して、０. ５〜３０重量部のポリフェニレンサルファイ
ドと０. ５〜３０重量部のポリテトラフルオロエチレン
を配合して得た塗料を、導体又は絶縁層で被覆された導
体に塗布焼付けてなることを特徴とするものである。DISCLOSURE OF THE INVENTION The present invention was able to develop an insulated wire having excellent workability as a result of intensive research as if the insulated wire itself does not have excellent workability. Is. That is, the insulated wire of the present invention comprises a baking-type water-soluble resin coating material, and 0.5 to 30 parts by weight of polyphenylene sulfide and 0.5 to 30 parts by weight based on 100 parts by weight of the resin content in the resin coating material. A paint obtained by blending polytetrafluoroethylene is applied to a conductor or a conductor covered with an insulating layer and baked.

【０００７】本発明にて、ベースの樹脂塗料として水溶
性のものを用いる理由は、混合容易なエマルジョンタイ
プのポリフェニレンサルファイド（以下、ＰＰＳと呼
ぶ。）やポリテトラフルオロエチレン（以下、ＰＴＦＥ
と呼ぶ。）をベース樹脂塗料に配合した場合、ベース樹
脂塗料が溶剤溶解型であると濁りなどを発生し、得られ
た樹脂塗料からは均質な絶縁皮膜が得られないためであ
る。なお、本発明において、使用される水溶性樹脂塗料
の樹脂としては、例えば、ポリエステル、ポリエステル
イミド、ポリウレタン、ポリアミドイミド、ポリイミド
などを挙げることが出来るが、特に限定されるものでな
い。In the present invention, the reason why the water-soluble base resin paint is used is that emulsion type polyphenylene sulfide (hereinafter referred to as PPS) and polytetrafluoroethylene (hereinafter referred to as PTFE), which are easily mixed.
Call. This is because when the base resin paint is blended with the base resin paint, if the base resin paint is a solvent-soluble type, turbidity occurs, and a uniform insulating film cannot be obtained from the obtained resin paint. In addition, in the present invention, examples of the resin of the water-soluble resin coating used include polyester, polyester imide, polyurethane, polyamide imide, and polyimide, but are not particularly limited.

【０００８】また、この水溶性樹脂塗料は、市販品でも
良い。例えば、ポリイミド樹脂の水溶性塗料としては、
日東電工株式会社製のＸー６００Ｗがある。また、ポリ
エステル樹脂の水溶性塗料としては、テレフタル酸ジメ
チル、無水マレイン酸、エチレングリコール、トリメチ
ロールプロパンとを反応させ、この反応生成物にトリメ
ット酸アリルエステルを付加し、その反応生成物をトリ
エチルアミンで中和させて得た樹脂組成物（特公昭６０
─１０５３７号）を均一に溶解させたもの、あるいはエ
チレングリコールとグリセリンとの混合物の中にテレフ
タル酸ジメチルを加えて反応させ、その中にベンゾフェ
ノンテトラカルボン酸二無水物を加え、さらに反応させ
た中にモノエタノールアミンを入れて得た樹脂分を均一
に溶解させたもの（特公昭５２─４９５１７号）なども
利用できる。The water-soluble resin paint may be a commercial product. For example, as a water-soluble paint of polyimide resin,
There is X-600W made by Nitto Denko Corporation. Further, as a water-soluble paint for polyester resin, dimethyl terephthalate, maleic anhydride, ethylene glycol, and trimethylolpropane are reacted, and trimetic acid allyl ester is added to this reaction product, and the reaction product is triethylamine. Resin composition obtained by neutralization (JP-B-60
-No. 10537) was uniformly dissolved or a mixture of ethylene glycol and glycerin was added with dimethyl terephthalate to cause a reaction, and benzophenonetetracarboxylic acid dianhydride was added to the mixture for further reaction. It is also possible to use a product obtained by uniformly dissolving the resin component obtained by adding monoethanolamine to (JP-B-52-49517).

【０００９】本発明にて、ベースの水溶性樹脂塗料に配
合するＰＰＳとＰＴＦＥの配合量を、ベースの水溶性樹
脂塗料の樹脂分１００重量部に対して、それぞれ、０.
５〜３０重量部と規定した理由は、ＰＰＳとＰＴＦＥの
配合量が、０. ５重量部未満の場合は、得られる絶縁電
線の絶縁皮膜の耐加工性の指標である絶縁皮膜の耐摩耗
性が充分向上しない為である。また、いずれかの配合量
が、３０重量部を超える場合においては、得られる絶縁
電線の絶縁皮膜の表面の荒れが特に顕著となり、また、
得られる絶縁電線は絶縁皮膜の剥離なども生じるように
なるためである。ここで注意すべきことは、ＰＰＳ樹脂
およびＰＴＦＥ樹脂のいずれか一方でも、その配合量
が、ベースの水溶性樹脂塗料の樹脂分１００重量部に対
して、０.５重量部未満になると、得られる絶縁電線の
絶縁皮膜の耐摩耗性の向上の著しい効果が発現されない
ことである。In the present invention, the amount of PPS and PTFE blended in the base water-soluble resin coating material is 0.1% by weight per 100 parts by weight of the resin content of the base water-soluble resin coating material.
The reason for defining 5 to 30 parts by weight is that when the compounding amount of PPS and PTFE is less than 0.5 parts by weight, the abrasion resistance of the insulating film, which is an index of the workability of the insulating film of the obtained insulated wire, is obtained. Is not sufficiently improved. Further, when any one of the blending amounts exceeds 30 parts by weight, the surface roughness of the insulating film of the obtained insulated wire becomes particularly remarkable, and
This is because the obtained insulated wire also comes to have peeling of the insulating film. It should be noted here that when either the PPS resin or the PTFE resin is blended in an amount of less than 0.5 parts by weight with respect to 100 parts by weight of the resin content of the base water-soluble resin coating material, That is, the remarkable effect of improving the wear resistance of the insulating film of the insulated wire is not exhibited.

【００１０】[0010]

【作用】本発明の絶縁電線は、ベースの水溶性樹脂塗料
の焼付樹脂皮膜中に均一に分散された、適量のＰＰＳ樹
脂およびＰＴＦＥ樹脂の存在により、優れた耐摩耗性を
発揮する。The insulated wire of the present invention exhibits excellent wear resistance due to the presence of appropriate amounts of PPS resin and PTFE resin uniformly dispersed in the baking resin film of the water-soluble resin coating material of the base.

【００１１】[0011]

【実施例】以下、本発明を実施例を挙げて説明する。 （水溶性ポリエステル樹脂塗料の製造）テレフタル酸ジ
メチル９７重量部、無水マレイン酸２０重量部、エチレ
ングリコール３７重量部、およびトリメチロールプロパ
ン６７重量部に、酢酸鉛１重量部を添加し、これを加熱
溶解した後、反応温度を６時間かけて２００℃まで上げ
た。しかる後、反応温度を１５０℃以下に下げ、ついで
反応系にトリメリット酸アリールエステル８５重量部を
添加し、１８０℃まで昇温しながら３時間反応させて、
粘稠な樹脂を得た。こうして得た樹脂をトリエチルアミ
ンで中和した後、氷を加えて均一な水溶液とし、これを
水溶性ポリエステル樹脂塗料とした。なお、用いたトリ
メリット酸アリールエステルは、トリメリット酸無水物
モノクロライド４２１重量部、クレゾール２７０重量部
およびキシレン１０００重量部を混合し、徐々に昇温し
て２時間で１３０℃とし、１３０℃で３時間反応させた
後、反応系に、さらにキシレン１０００重量部を加えて
反応系を常温に戻してから、反応生成物を濾過分離し、
それを水中に注加し十分に洗浄した後、１２５℃で２４
時間乾燥したものを用いた。EXAMPLES The present invention will be described below with reference to examples. (Production of Water-Soluble Polyester Resin Paint) To 97 parts by weight of dimethyl terephthalate, 20 parts by weight of maleic anhydride, 37 parts by weight of ethylene glycol, and 67 parts by weight of trimethylolpropane, 1 part by weight of lead acetate is added and heated. After dissolution, the reaction temperature was raised to 200 ° C. over 6 hours. Thereafter, the reaction temperature is lowered to 150 ° C. or lower, then 85 parts by weight of a trimellitic acid aryl ester is added to the reaction system, and the mixture is reacted for 3 hours while heating to 180 ° C.
A viscous resin was obtained. The resin thus obtained was neutralized with triethylamine and then ice was added to form a uniform aqueous solution, which was used as a water-soluble polyester resin coating material. The trimellitic acid aryl ester used was a mixture of 421 parts by weight of trimellitic acid anhydride monochloride, 270 parts by weight of cresol and 1000 parts by weight of xylene, and the temperature was gradually raised to 130 ° C. for 2 hours and then 130 ° C. After reacting for 3 hours at room temperature, 1000 parts by weight of xylene was added to the reaction system to bring the reaction system back to room temperature, and then the reaction product was separated by filtration.
After pouring it into water and washing it thoroughly, it is kept at 125 ° C for 24 hours.
The one dried for an hour was used.

【００１２】実施例１〜３および比較例１〜２ 上記の水溶性ポリエステル樹脂塗料を、直径１ｍｍの銅
線上に数回塗布焼付けを繰り返し施して、絶縁皮膜厚さ
が３５μｍの絶縁電線を作った。この後、この絶縁電線
上に、上記の水溶性ポリエステル樹脂塗料中の樹脂１０
０重量部に対して、表１に示す量のＰＰＳおよびＰＴＦ
Ｅを配合した水溶性ポリエステル樹脂塗料を１回塗布焼
付けて、絶縁皮膜の厚さが３９μｍのポリエステル樹脂
絶縁電線実施例１〜３、および比較例１〜２を得た。Ｐ
ＰＳおよびＰＴＦＥを配合する際にはこれらが配合され
たエマルジョンタイプの水溶性塗料を用いた。得られた
それぞれのポリエステル樹脂絶縁電線について、外観、
絶縁破壊電圧およびＪＩＳ Ｃ３００３に定められた耐
摩耗性試験（一方向摩耗試験）、およびＪＩＳ Ｃ３０
０３（１９７４）に記載の往復摩耗試験を行った。得ら
れた結果を表１に併記する。Examples 1 to 3 and Comparative Examples 1 and 2 The above water-soluble polyester resin coatings were repeatedly applied and baked on a copper wire having a diameter of 1 mm several times to produce an insulated wire having an insulating film thickness of 35 μm. . Then, the resin 10 in the water-soluble polyester resin paint is applied on the insulated wire.
The amount of PPS and PTF shown in Table 1 is based on 0 part by weight.
A water-soluble polyester resin paint containing E was applied and baked once to obtain polyester resin insulated electric wires Examples 1 to 3 and Comparative Examples 1 and 2 each having an insulating film thickness of 39 μm. P
When PS and PTFE were blended, an emulsion type water-soluble paint containing them was used. For each obtained polyester resin insulated wire, appearance,
Dielectric breakdown voltage and abrasion resistance test (one-way abrasion test) specified in JIS C3003, and JIS C30
The reciprocating wear test described in No. 03 (1974) was performed. The obtained results are also shown in Table 1.

【００１３】[0013]

【表１】 [Table 1]

【００１４】表１から明らかなように、本発明の絶縁電
線は、外観が良好で、優れた耐摩耗特性を具備してい
る。As is apparent from Table 1, the insulated wire of the present invention has a good appearance and excellent wear resistance.

【００１５】実施例４〜６および比較例３〜５ 市販の水溶性ポリイミド樹脂塗料（日東電工株式会社製
商品名 Ｘ−６００Ｗ）を、直径１ｍｍの銅線上に数回
塗布焼付けを繰り返し施して、絶縁皮膜厚さが３５μｍ
の絶縁電線を作った。この後、この絶縁電線上に、上記
の水溶性ポリイミド樹脂塗料中の樹脂１００重量部に対
して、表２に示す量のＰＰＳおよびＰＴＦＥを配合した
水溶性ポリイミド樹脂塗料を１回塗布焼付けて、絶縁皮
膜の厚さが３９μｍのポリイミド樹脂絶縁電線実施例４
〜６、および比較例３〜５を得た。ＰＰＳおよびＰＴＦ
Ｅを配合する際にはこれらが配合されたエマルジョンタ
イプの水溶性塗料を用いた。得られたそれぞれのポリイ
ミド樹脂絶縁電線について、外観、絶縁破壊電圧および
ＪＩＳ Ｃ３００３に定められた耐摩耗性試験（一方向
摩耗試験）、およびＪＩＳ Ｃ３００３（１９７４）に
記載の往復摩耗試験を行った。得られた結果を表２に併
記する。Examples 4 to 6 and Comparative Examples 3 to 5 A commercially available water-soluble polyimide resin paint (trade name: X-600W, manufactured by Nitto Denko Corporation) was repeatedly applied and baked on a copper wire having a diameter of 1 mm several times. Insulation film thickness is 35 μm
I made an insulated wire. Then, on this insulated wire, 100 parts by weight of the resin in the above water-soluble polyimide resin paint was coated and baked once with a water-soluble polyimide resin paint containing the amounts of PPS and PTFE shown in Table 2, Example 4 of a polyimide resin insulated wire having an insulating film thickness of 39 μm
6 and Comparative Examples 3-5 were obtained. PPS and PTF
When E was blended, an emulsion-type water-soluble paint containing them was used. Each of the obtained polyimide resin insulated wires was subjected to an appearance, a dielectric breakdown voltage and a wear resistance test (one-way wear test) defined in JIS C3003, and a reciprocating wear test described in JIS C3003 (1974). The obtained results are also shown in Table 2.

【００１６】[0016]

【表２】 [Table 2]

【００１７】表２から明らかなように、本発明の絶縁電
線は、外観が良好で、優れた耐摩耗特性を具備してい
る。As is apparent from Table 2, the insulated wire of the present invention has a good appearance and excellent wear resistance.

【００１８】[0018]

【発明の効果】以上、実施例からも明らかなように、本
発明の絶縁電線は、優れた耐摩耗特性を具備した耐加工
性に優れたものであり、自動巻線機による高速コイル形
成用の絶縁電線に好適なものである。As is apparent from the above examples, the insulated wire of the present invention has excellent wear resistance and excellent workability and is suitable for high-speed coil formation by an automatic winding machine. It is suitable for the insulated wire.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 焼付型水溶性樹脂塗料に、当該樹脂塗料
中の樹脂分１００重量部に対して、０. ５〜３０重量部
のポリフェニレンサルファイドと０. ５〜３０重量部の
ポリテトラフルオロエチレンを配合して得た塗料を導体
又は絶縁層で被覆された導体に塗布焼付けてなることを
特徴とする耐加工性絶縁電線。1. A baking-type water-soluble resin coating material, wherein 0.5 to 30 parts by weight of polyphenylene sulfide and 0.5 to 30 parts by weight of polytetrafluoroethylene are added to 100 parts by weight of the resin content in the resin coating material. A work-resistant insulated electric wire, characterized in that it is obtained by applying and baking a coating material obtained by blending the composition onto a conductor or a conductor covered with an insulating layer.