【０００１】[0001]
【産業上の利用分野】本発明は、良好な耐摩耗性を具備
した耐加工性に優れたエナメル絶縁電線に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an enamel insulated wire having good wear resistance and excellent workability.
【０００２】[0002]
【従来の技術】近年、電気機器製造工程の合理化のた
め、エナメル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、エナメル絶縁電線は強い張力を受けながら屈曲、摩
擦等を受けて巻線されるため、その絶縁層は極めて損傷
を受け易く、このため、得られるコイル自体の信頼性を
著しく低下せしめるものであった。また、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
のためにもエナメル絶縁電線に張力を掛けて緊密に巻く
必要がある。このコイル巻き作業を容易に行わせしめる
ための重要な因子としては、エナメル絶縁電線相互、あ
るいは、エナメル絶縁電線と巻線治具とが接触したとき
のエナメル絶縁皮膜の傷のつき難さ、即ち、エナメル絶
縁電線の絶縁皮膜強度がある。即ち、エナメル絶縁電線
の絶縁皮膜の機械的強度が強い程、コイル巻き加工にお
ける絶縁皮膜の損傷の発生が少ないと言える。しかし、
従来、エナメル絶縁電線の絶縁皮膜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、間接的な手段とし
て、エナメル絶縁電線の表面摩擦係数を低下させて、巻
線作業時の絶縁皮膜の傷発生を抑えると言った手段がと
られていた。例えば、エナメル絶縁電線の表面に、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
き付けしたりするといった手段がとられていた。2. Description of the Related Art In recent years, in order to rationalize the manufacturing process of electric equipment, the coil winding work for enamel insulated wires has been shifted from the conventional manual winding work to high-speed mechanical winding work using an automatic winding machine. However, when an automatic winding machine is used, the enamel insulated wire is bent and rubbed while being subjected to strong tension and is wound, so that the insulating layer is extremely susceptible to damage, and therefore the resulting coil itself It significantly deteriorates the reliability of. When forming a coil, it is effective to reduce the space factor of the insulated wire as much as possible in terms of economic efficiency and ease of use of the entire device.For this reason, apply tension to the enamel insulated wire. It needs to be wound tightly. An important factor for facilitating this coil winding work is that the enamel insulated wire is not scratched when the enamel insulated wire or the enamel insulated wire and the winding jig are in contact with each other, that is, Enameled insulated wire has a strong insulation film. That is, it can be said that the stronger the mechanical strength of the insulating coating of the enamel insulated wire, the less the occurrence of damage to the insulating coating during coiling. But,
Conventionally, there are not many direct measures taken to increase the strength of the insulation coating of enamel insulated wires, and as an indirect means, the surface friction coefficient of enamel insulated wires is reduced to reduce the insulation coating during winding work. The means to suppress the occurrence of scratches was taken. For example, a wax-like lubricant having a relatively low coefficient of friction or a polyamide resin having a relatively low coefficient of friction is applied and baked on the surface of the enamel insulated wire.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、エナメ
ル絶縁電線の表面に潤滑剤等を塗布しても、期待した程
の傷防止効果は得られず、しかも、エナメル絶縁電線へ
の潤滑剤等の塗布量の調節が非常に困難であった。ま
た、ポリアミド樹脂塗料をエナメル絶縁電線の最外層に
焼き付けた場合は、絶縁皮膜の摩擦係数自体の低減化を
望むことができるが、本来のエナメル絶縁電線としての
特性で失う部分もあり、総合的にはあまり良い方法であ
るとは言えなかった。本発明は、良好な耐摩耗性を具備
した耐加工性に優れたエナメル絶縁電線を提供すること
を目的とするものである。However, even if a lubricant or the like is applied to the surface of the enamel insulated wire, the expected damage prevention effect cannot be obtained, and furthermore, the lubricant or the like is applied to the enamel insulated wire. It was very difficult to control the amount. Also, when polyamide resin paint is baked on the outermost layer of the enamel insulated wire, it is possible to hope to reduce the friction coefficient of the insulating film itself, but there are some parts that are lost due to the characteristics of the original enamel insulated wire. It wasn't a very good way to go. It is an object of the present invention to provide an enamel insulated electric wire having good wear resistance and excellent workability.
【０００４】[0004]
【課題を解決するための手段】即ち、本発明の耐加工性
エナメル絶縁電線は、導体上に、直接あるいは他の絶縁
層を介してシリコーン樹脂微粒子の分散された焼付け樹
脂層を設けたことを特徴とするものである。本発明にお
けるエナメル絶縁電線の耐加工性の向上は、エナメル絶
縁電線の絶縁皮膜の表面状態に基づくものであり、従っ
て絶縁皮膜層の形成に際し、絶縁皮膜層全層をシリコー
ン樹脂微粒子を配合した樹脂塗料のみの焼付けで形成し
てもよいが、絶縁皮膜層の最外層のみをシリコーン樹脂
微粒子を配合した樹脂塗料の焼付け皮膜で形成すれば充
分な効果が得られる。That is, in the work-resistant enamel insulated wire of the present invention, a baking resin layer in which silicone resin fine particles are dispersed is provided on the conductor directly or through another insulating layer. It is a feature. The improvement of the work resistance of the enamel insulated wire in the present invention is based on the surface state of the insulating film of the enamel insulated wire, and therefore, when the insulating film layer is formed, all the insulating film layers are made of a resin containing silicone resin fine particles. Although it may be formed by baking only the paint, a sufficient effect can be obtained if only the outermost layer of the insulating film layer is formed by a baking film of a resin paint containing silicone resin particles.
【０００５】本発明の耐加工性エナメル絶縁電線におい
て、シリコーン樹脂微粒子の分散された焼付け樹脂層中
の分散されたシリコーン樹脂微粒子の含有量は、ベース
樹脂分１００重量部に対して０. ５〜３０重量部の範囲
内の量が好ましい。その理由は、ベース樹脂分１００重
量部に対してシリコーン樹脂微粒子の含有量が０. ５重
量部未満では、耐加工性の指標である焼付け樹脂皮膜の
耐摩耗性の向上の効果が得られず、また、３０重量部を
超えて多量であると焼付けて得られる焼付け樹脂皮膜の
表面の荒れが特に顕著となり、また、焼付け樹脂皮膜が
剥離等し易くなるなど好ましくない傾向が生じるためで
ある。なお、シリコーン樹脂微粒子は、平均粒径が１０
μｍを越えると形成された絶縁皮膜の表面状態に荒れが
生じることがあるため、１０μｍ以下のものが好まし
い。このシリコーン樹脂微粒子は、例えば、東レ・ダウ
コーニング・シリコーン（株）社製の商品名Ｅ６００、
Ｒ９２５等や、信越化学（株）社製、東芝シリコーン
（株）社製等の製品がある。In the work-resistant enamel insulated wire of the present invention, the content of the dispersed silicone resin fine particles in the baking resin layer in which the silicone resin fine particles are dispersed is 0.5 to 100 parts by weight of the base resin. Amounts within the range of 30 parts by weight are preferred. The reason is that when the content of the silicone resin fine particles is less than 0.5 parts by weight with respect to 100 parts by weight of the base resin, the effect of improving the wear resistance of the baking resin film, which is an index of the workability, cannot be obtained. Further, if the amount is more than 30 parts by weight, the surface roughness of the baking resin film obtained by baking becomes particularly remarkable, and the baking resin film easily peels off, which is not preferable. The silicone resin particles have an average particle size of 10
If the thickness exceeds 10 μm, the surface condition of the formed insulating film may be roughened, so that the thickness is preferably 10 μm or less. The silicone resin fine particles are, for example, trade name E600 manufactured by Toray Dow Corning Silicone Co., Ltd.,
There are products such as R925, Shin-Etsu Chemical Co., Ltd. and Toshiba Silicone Co., Ltd.
【０００６】本発明の耐加工性エナメル絶縁電線におい
て、シリコーン樹脂微粒子の分散された焼付け樹脂層の
ベース樹脂としては、特に限定されるものではなく、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、ポリイミド等の種々の樹脂が用いられ
る。シリコーン樹脂微粒子の分散された焼付け樹脂層の
形成は、上記の樹脂をベース樹脂とし、これにシリコー
ン樹脂微粒子を分散させた樹脂塗料の塗布焼付けにより
形成する。この際の樹脂塗料としては水溶性型でも有機
溶剤溶解型のいずれのタイプの樹脂塗料を用いてもよい
が、水溶性樹脂塗料はその取扱が容易であり、公害上か
らも好ましいものである。樹脂塗料へのシリコーン樹脂
微粒子の分散は、直接シリコーン樹脂微粒子を樹脂塗料
に加え攪拌して分散させてもよいが、容易にシリコーン
樹脂微粒子を樹脂塗料中に均一分散できる点で、予め、
水や溶剤にシリコーン樹脂微粒子を分散させてシリコー
ン樹脂微粒子の分散液を作り、このシリコーン樹脂微粒
子の分散液を樹脂塗料に加えて分散させる方法を用いる
のが好ましい。In the work-resistant enamel insulated wire of the present invention, the base resin of the baking resin layer in which fine particles of silicone resin are dispersed is not particularly limited, and polyester, polyester imide, polyurethane, polyamide imide, polyimide, etc. Various resins are used. The baking resin layer in which the silicone resin fine particles are dispersed is formed by applying and baking a resin paint in which the above resin is used as a base resin and silicone resin fine particles are dispersed in the base resin. As the resin coating material at this time, either a water-soluble resin coating material or an organic solvent-soluble resin coating material may be used. However, the water-soluble resin coating material is easy to handle and preferable from the viewpoint of pollution. The dispersion of the silicone resin fine particles in the resin coating may be carried out by directly adding the silicone resin fine particles to the resin coating and stirring, but in advance that the silicone resin fine particles can be easily uniformly dispersed in the resin coating,
It is preferable to use a method in which the silicone resin fine particles are dispersed in water or a solvent to prepare a dispersion liquid of the silicone resin fine particles, and the dispersion liquid of the silicone resin fine particles is added to the resin coating material and dispersed.
【０００７】例えば、水溶性ポリエステル樹脂系塗料
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、そ
れにトリメリット酸アリルエステルを付加させ、その反
応生成物をトリエチルアミンで中和させた樹脂組成物
（特公昭６０−１０５３７号）。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、更に、反応物の中にモノエタ
ノールアミンを入れ、樹脂分を均一に溶解させる（特公
昭５２−４９５１７号）などに開示された方法で調製で
きる。また、水溶性ポリイミド樹脂系塗料は、日東電工
株式会社製の商品名Ｘ−６００Ｗなどが市販されてい
る。For example, a water-soluble polyester resin-based paint is reacted with dimethyl terephthalate, maleic anhydride, ethylene glycol and trimethylolpropane, to which trimellitic acid allyl ester is added, and the reaction product is triethylamine. Warmed resin composition (Japanese Patent Publication No. 60-10537). Alternatively, dimethyl terephthalate is added to and reacted in a mixture of ethylene glycol and glycerin, benzophenonetetracarboxylic dianhydride is added thereto, and monoethanolamine is added to the reaction product to homogenize the resin content. It can be prepared by the method disclosed in JP-B-52-49517. In addition, as the water-soluble polyimide resin-based paint, a product name X-600W manufactured by Nitto Denko Corporation is commercially available.
【０００８】[0008]
【作用】本発明の耐加工性エナメル絶縁電線は、導体上
の絶縁皮膜の少なくても最外層がシリコーン樹脂微粒子
を含む層であるため耐摩耗性に優れており、過酷な加工
を受けても電気特性などの特性が大きく低下したりしな
い。The work-resistant enamel insulated wire of the present invention is excellent in abrasion resistance because the outermost layer is a layer containing fine particles of silicone resin even if there are few insulating coatings on the conductor, and is resistant to severe processing. Characteristics such as electrical characteristics do not deteriorate significantly.
【０００９】[0009]
【実施例】以下に本発明の実施例について説明する。 （水溶性ポリエステル絶縁塗料の調製）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、及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時間で２００℃まで上げた。その
後、一旦反応温度を１５０℃以下に下げた後、反応系に
トリメリット酸アリルエステル８５重量部を添加し、１
８０℃まで昇温しながら３時間反応させて粘稠な樹脂を
得た。なお、上記のトリメリット酸アリルエステルは、
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重量部及びキシレン１０００重量部を混
合し、徐々に昇温して約２時間で１３０℃とし、１３０
℃で３時間反応させた後、更に、キシレン１０００重量
部を加えて常温に戻してから、反応生成物を濾過分離
し、それを水中に注加し充分に洗浄した後、１２５℃で
２４時間乾燥させて得たものを用いた。上記のようにし
て調製した粘稠な樹脂をトリエチルアミンで中和後、氷
を加えて均一な水溶液となして水溶性ポリエステル樹脂
塗料を得た。EXAMPLES Examples of the present invention will be described below. (Preparation of Water-Soluble Polyester Insulating Paint) 1 part by weight of lead acetate was added 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, and dissolved by heating. After that, the reaction temperature was raised to 200 ° C. in 6 hours. Then, once the reaction temperature was lowered to 150 ° C. or lower, 85 parts by weight of trimellitic acid allyl ester was added to the reaction system, and 1
The reaction was carried out for 3 hours while raising the temperature to 80 ° C. to obtain a viscous resin. The above allyl ester of trimellitic acid is
421 parts by weight of trimellitic anhydride monochloride, 270 parts by weight of cresol and 1000 parts by weight of xylene are mixed, and the temperature is gradually raised to 130 ° C. in about 2 hours.
After reacting at ℃ for 3 hours, 1000 parts by weight of xylene was further added to return to room temperature, the reaction product was separated by filtration, poured into water and thoroughly washed, and then at 125 ℃ for 24 hours. The one obtained by drying was used. The viscous resin prepared as described above was neutralized with triethylamine, and then ice was added to form a uniform aqueous solution to obtain a water-soluble polyester resin coating material.
【００１０】（シリコーン樹脂微粒子の水分散液の調
製）シリコーン樹脂微粒子を水中へ分散するため、以下
の手法を用いた。シリコーン樹脂微粒子（東レ・ダウコ
ーニング・シリコーン（株）社製、商品名Ｅ６００）１
００ｇと界面活性剤（米国エアープロダクツ（株）社
製、商品名サーフィノール４６５）５０ｇとを任意の容
器中で混合し、更に、均一とするために混合物をボール
ミル中で４時間攪拌した。その後、この混合物中に水を
少量づつ加え、シリコーン樹脂微粒子の樹脂濃度が５０
％となるまで水を加え、ボールミル中で２時間攪拌して
分散させた。(Preparation of Aqueous Dispersion of Silicone Resin Fine Particles) In order to disperse the silicone resin fine particles in water, the following method was used. Silicone resin particles (Toray Dow Corning Silicone Co., Ltd., trade name E600) 1
00 g and 50 g of a surfactant (trade name: Surfynol 465, manufactured by US Air Products Co., Ltd.) were mixed in an arbitrary container, and the mixture was further stirred in a ball mill for 4 hours for homogenization. Then, water was added little by little to this mixture so that the resin concentration of the silicone resin fine particles was 50%.
Water was added until the content became%, and the mixture was stirred in a ball mill for 2 hours to disperse.
【００１１】実施例１〜３ 上記の方法で調製した水溶性ポリエステル樹脂塗料に、
その樹脂分１００重量部に対して、上記の方法で調製し
たシリコーン樹脂微粒子を分散させた分散水溶液を、シ
リコーン樹脂微粒子固形分で０．７５重量部（実施例
１）、１５．０重量部（実施例２）、２８．０重量部
（実施例３）０．３重量部（比較例１）、４０重量部
（比較例２）となるようにそれぞれ添加し、高速攪拌ミ
キサーを用いて充分攪拌し、シリコーン樹脂微粉末が充
分に分散された水溶性ポリエステル樹脂塗料を調製し
た。 （絶縁電線の製造）先ず、シリコーン樹脂微粒子を添加
しない前述の水溶性ポリエステル樹脂塗料を、直径１ｍ
ｍの銅線上に数回塗布焼付けを行い、エナメル絶縁皮膜
厚さ３５μｍのポリエステル絶縁電線を製造した。この
ポリエステル絶縁電線の絶縁皮膜層上に前述のシリコー
ン樹脂微粒子を分散させた水溶性ポリエステル樹脂塗料
を１回塗布焼付けを行い、絶縁皮膜厚さが全層で３８μ
ｍのポリエステル絶縁電線を得た。また、シリコーン樹
脂微粒子を添加しない水溶性ポリエステル樹脂塗料のみ
（比較例３）を用いて絶縁皮膜厚さが全層で３８μｍの
ポリエステル絶縁電線を製造した。Examples 1 to 3 In the water-soluble polyester resin paint prepared by the above method,
With respect to 100 parts by weight of the resin content, 0.75 parts by weight (Example 1) and 15.0 parts by weight of the dispersion aqueous solution in which the silicone resin fine particles prepared by the above method are dispersed as the solid content of the silicone resin fine particles ( Example 2), 28.0 parts by weight (Example 3), 0.3 parts by weight (Comparative Example 1), and 40 parts by weight (Comparative Example 2), respectively, and sufficiently stirred using a high-speed stirring mixer. Then, a water-soluble polyester resin coating material in which the silicone resin fine powder was sufficiently dispersed was prepared. (Manufacture of insulated wire) First, the water-soluble polyester resin coating described above without addition of silicone resin fine particles was prepared to have a diameter of 1 m.
m and a copper wire were applied and baked several times to produce a polyester insulated electric wire having an enamel insulating film thickness of 35 μm. The water-soluble polyester resin coating in which the above-mentioned silicone resin fine particles are dispersed is applied and baked once on the insulating film layer of this polyester insulated wire, and the insulating film thickness is 38μ in all layers.
m polyester insulated electric wire was obtained. Further, a polyester insulated electric wire having an insulating film thickness of 38 μm in all layers was produced using only a water-soluble polyester resin coating material containing no silicone resin particles (Comparative Example 3).
【００１２】以上、実施例１〜３および比較例１〜３に
て製造したそれぞれのポリエステル絶縁電線について、
ＪＩＳＣ−３００３に定める耐摩耗性試験（一方向摩耗
試験）及びＪＩＳＣ−３００３（１９７４）に記載の往
復摩耗試験、および引っ掻き摩耗試験を行った。なお、
引っ掻き摩耗試験は、図１に示すような引っ掻き摩耗試
験器を用いて評価した。また、引っ掻き摩耗試験の荷重
は１ｋｇであった。この試験器は、被試験線と同径のピ
アノ線を被試験線に対して、直角に保持し、そのピアノ
線に一定の荷重を掛け、被試験線を引き抜くことによ
り、被試験線にピアノ線による加工を加えるものであ
る。この加工を加えられた被試験線に、ＪＩＳ−Ｃ３０
０３で規定のピンホール試験を実施し、ピンホール数を
数えた（なお、被試験線は伸長しなかった。）。以上、
得られた結果を表１に示した。The polyester insulated wires produced in Examples 1 to 3 and Comparative Examples 1 to 3 are as follows.
A wear resistance test (one-way wear test) defined in JISC-3003 and a reciprocating wear test and a scratch wear test described in JISC-3003 (1974) were performed. In addition,
The scratch abrasion test was evaluated using a scratch abrasion tester as shown in FIG. The load of the scratch abrasion test was 1 kg. This tester holds a piano wire with the same diameter as the wire under test at a right angle to the wire under test, applies a constant load to the piano wire, and pulls out the wire under test to remove the piano wire from the wire under test. It is to add processing by lines. JIS-C30 is applied to the test line that has been subjected to this processing.
The specified pinhole test was carried out in No. 03, and the number of pinholes was counted (note that the line under test did not extend). that's all,
The obtained results are shown in Table 1.
【００１３】[0013]
【表１】（注）＊比較例２は絶縁電線表面の荒れが発生し、ま
た、絶縁皮膜の剥がれも見られた。 表１から明らかなように、本発明のポリエステル絶縁電
線は、本来の電気特性などは何ら損なわれること無く、
耐加工性の指標である一方向摩耗や往復摩耗の値が比較
例品に較べて大幅に向上している。そして、過酷な加工
を模擬した引っ掻き摩耗試験後においても、比較例品に
は絶縁皮膜に多数のピンホールが発生していたのに対し
て、本発明のポリエステル絶縁電線の絶縁皮膜にはピン
ホールは全く発生しなかった。[Table 1] (Note) * In Comparative Example 2, the surface of the insulated wire was roughened, and the insulating film was peeled off. As is clear from Table 1, the polyester insulated wire of the present invention does not impair the original electrical characteristics,
The values of unidirectional wear and reciprocating wear, which are indicators of work resistance, are significantly improved compared to the comparative example product. And, even after the scratch abrasion test simulating the severe processing, many pinholes were generated in the insulating film of the comparative example product, whereas the pinhole was formed in the insulating film of the polyester insulated wire of the present invention. Did not occur at all.
【００１４】（実施例４〜５、比較例４〜５）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）の中に、その樹脂分１００重量部に対し
て、シリコーン樹脂微粒子を分散させた分散水溶液を、
シリコーン樹脂微粒子固形分で３．０重量部（実施例
４）、２０．０重量部（実施例５）、３５．０重量部
（比較例４）となるようにそれぞれ添加して、高速攪拌
ミキサーを用いて充分攪拌しシリコーン樹脂微粉末が充
分に分散された水溶性ポリイミド樹脂塗料を調製した。 （絶縁電線の製造）先ず、シリコーン樹脂微粒子を添加
しない前述の水溶性ポリイミド樹脂塗料を、直径１ｍｍ
の銅線上に数回塗布焼付けを行い、絶縁皮膜厚さ３５μ
ｍのポリイミド絶縁電線を製造した。このポリイミド絶
縁電線の絶縁皮膜層上に、前述のシリコーン樹脂微粒子
を分散させた水溶性ポリイミド樹脂塗料を１回塗布焼付
けを行い、絶縁皮膜厚さが全層で３８μｍポリイミド絶
縁電線を製造した。また、シリコーン樹脂微粒子を添加
しない水溶性ポリイミド樹脂塗料のみ（比較例５）を用
いて、絶縁皮膜厚さが全層で３８μｍのポリイミド絶縁
電線を製造した。以上、実施例４〜５および比較例４〜
５にて製造したそれぞれのポリイミド絶縁電線につい
て、実施例１と同様に、ＪＩＳＣ−３００３に定める耐
摩耗性試験（一方向摩耗試験）及びＪＩＳＣ−３００３
（１９７４）に記載の往復摩耗試験および引っ掻き摩耗
試験を行った。引っ掻き摩耗試験の荷重は１ｋｇであっ
た。得られた結果を表２に示した。(Examples 4 to 5 and Comparative Examples 4 to 5) Commercially available water-soluble polyimide resin paint (trade name x manufactured by Nitto Denko Corporation)
-600 w), a dispersion aqueous solution in which silicone resin fine particles are dispersed in 100 parts by weight of the resin content,
The high-speed stirring mixer was added so that the solid content of the silicone resin fine particles was 3.0 parts by weight (Example 4), 20.0 parts by weight (Example 5), and 35.0 parts by weight (Comparative Example 4), respectively. Was sufficiently stirred using to prepare a water-soluble polyimide resin coating material in which fine particles of silicone resin were sufficiently dispersed. (Production of insulated wire) First, the above-mentioned water-soluble polyimide resin paint containing no silicone resin fine particles was applied to a 1 mm diameter.
Applying and baking several times on the copper wire, the insulation film thickness is 35μ
m polyimide insulated wire was produced. The water-soluble polyimide resin paint in which the above-mentioned silicone resin fine particles were dispersed was applied and baked once on the insulating film layer of this polyimide insulated wire to manufacture a 38 μm polyimide insulated wire having an insulating film thickness of all layers. Further, using only the water-soluble polyimide resin paint containing no silicone resin fine particles (Comparative Example 5), a polyimide insulated wire having an insulating film thickness of 38 μm in all layers was produced. As described above, Examples 4 to 5 and Comparative Examples 4 to
For each of the polyimide-insulated electric wires manufactured in 5, the abrasion resistance test (one-way abrasion test) and JISC-3003 defined in JISC-3003, as in Example 1.
The reciprocating wear test and the scratch wear test described in (1974) were performed. The load of the scratch abrasion test was 1 kg. The obtained results are shown in Table 2.
【００１５】[0015]
【表２】（注）＊比較例４は絶縁電線表面の荒れが発生し、ま
た、絶縁皮膜の剥がれも見られた。 表２から明らかなように、本発明のポリイミド絶縁電線
は、本来の電気特性などは何ら損なわれること無く、耐
加工性の指標である一方向摩耗や往復摩耗の値が比較例
品に較べて大幅に向上している。そして、過酷な加工を
模擬した引っ掻き摩耗試験後においても、比較例品が絶
縁皮膜に８〜１２のピンホールが発生していたのに対し
て、本発明のポリイミド絶縁電線はその絶縁皮膜にはピ
ンホールは全く発生しなかった。[Table 2] (Note) * In Comparative Example 4, the surface of the insulated wire was roughened, and the insulating film was peeled off. As is clear from Table 2, the polyimide-insulated electric wire of the present invention does not impair the original electrical characteristics and the like, and the values of unidirectional wear and reciprocal wear, which are indicators of workability, are higher than those of the comparative example products. It has improved significantly. And, even after the scratch abrasion test simulating the harsh processing, the comparative example product had 8 to 12 pinholes in the insulating film, whereas the polyimide insulated wire of the present invention has the insulating film. No pinholes occurred.
【００１６】[0016]
【発明の効果】以上詳述した如く、本発明の耐加工性エ
ナメル絶縁電線は、耐加工性の指標である一方向摩耗や
往復摩耗や引っ掻き摩耗試験に優れた性能を具備してい
るものであり、従って本発明の耐加工性エナメル絶縁電
線を使用すれば、自動巻線機による高速コイル形成にお
いて優れた巻線性が得られ、また、得られる機器全体の
信頼性の向上、並びに低コスト化を図ることができる等
顕著な効果を有する。As described above in detail, the work-resistant enamel insulated wire of the present invention has excellent performance in the one-way wear, reciprocating wear and scratch wear tests which are indexes of work resistance. Therefore, if the work-resistant enamel insulated wire of the present invention is used, excellent winding property can be obtained in high-speed coil formation by an automatic winding machine, and the reliability of the obtained device as a whole can be improved and the cost can be reduced. It has a remarkable effect such as
【図１】本発明にてエナメル絶縁電線の絶縁皮膜の引っ
掻き摩耗試験に用いた試験器の概略説明図である。FIG. 1 is a schematic explanatory view of a tester used for a scratch wear test of an insulating film of an enamel insulated wire according to the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25761993AJPH0794025A (en) | 1993-09-21 | 1993-09-21 | Process resistant enamel insulated wire |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25761993AJPH0794025A (en) | 1993-09-21 | 1993-09-21 | Process resistant enamel insulated wire |
| Publication Number | Publication Date |
|---|---|
| JPH0794025Atrue JPH0794025A (en) | 1995-04-07 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25761993APendingJPH0794025A (en) | 1993-09-21 | 1993-09-21 | Process resistant enamel insulated wire |
| Country | Link |
|---|---|
| JP (1) | JPH0794025A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001059791A1 (en)* | 2000-02-10 | 2001-08-16 | The Furukawa Electric Co., Ltd. | Insulated wire |
| JP2017142998A (en)* | 2016-02-10 | 2017-08-17 | 住友電気工業株式会社 | Insulation wire |
| CN114051644A (en)* | 2019-11-25 | 2022-02-15 | 埃赛克斯古河电磁线日本有限公司 | Insulated wire, coil, and electric/electronic device |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001059791A1 (en)* | 2000-02-10 | 2001-08-16 | The Furukawa Electric Co., Ltd. | Insulated wire |
| US6734361B2 (en) | 2000-02-10 | 2004-05-11 | The Furukawa Electric Co., Ltd. | Insulated wire |
| JP2017142998A (en)* | 2016-02-10 | 2017-08-17 | 住友電気工業株式会社 | Insulation wire |
| CN114051644A (en)* | 2019-11-25 | 2022-02-15 | 埃赛克斯古河电磁线日本有限公司 | Insulated wire, coil, and electric/electronic device |
| CN114051644B (en)* | 2019-11-25 | 2024-03-15 | 埃赛克斯古河电磁线日本有限公司 | Insulated wire, coil, and electric/electronic device |
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