JPH05234423A - Insulating coating and insulated electric wire - Google Patents
Insulating coating and insulated electric wireInfo
- Publication number
- JPH05234423A JPH05234423A JP7273992A JP7273992A JPH05234423A JP H05234423 A JPH05234423 A JP H05234423A JP 7273992 A JP7273992 A JP 7273992A JP 7273992 A JP7273992 A JP 7273992A JP H05234423 A JPH05234423 A JP H05234423A
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- JP
- Japan
- Prior art keywords
- insulating coating
- wire
- insulating
- weight
- 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.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、絶縁塗料及び該絶縁塗
料を塗布・焼き付けした絶縁電線に関し、さらに詳しく
は、捲線加工時における皮膜損傷が少なく、耐加工性に
優れる絶縁電線と、該絶縁電線に好適な絶縁塗料に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulating coating material and an insulated electric wire coated and baked with the insulating coating material. More specifically, the present invention relates to an insulated electric wire with less film damage during winding processing and excellent workability The present invention relates to an insulating paint suitable for electric wires.
【０００２】[0002]
【従来の技術】近年、電気・電子機器の小型化、軽量化
に伴い、モーターについてもよりコンパクトで高性能な
ものが望まれている。そのため、モーターのスロット内
により多くの絶縁電線を詰め込むことが検討されてい
る。しかし、スロット内に絶縁電線を強引に詰め込むた
め、絶縁電線をコイリングする捲線工程で絶縁皮膜に損
傷が生じてしまう。絶縁皮膜に損傷があると、レアー不
良、アース不良など電気的特性に大きな不都合が生じ大
きな問題となる。2. Description of the Related Art In recent years, as electric and electronic devices have become smaller and lighter, more compact and high-performance motors have been desired. Therefore, it is considered to pack more insulated wires in the motor slot. However, since the insulated electric wire is forcibly packed in the slot, the insulating coating is damaged in the winding step of coiling the insulated electric wire. If the insulating film is damaged, it causes a serious problem in electrical characteristics such as a layer failure and a ground failure, which is a serious problem.
【０００３】ところで、絶縁電線は、導体に絶縁物を被
覆した構造の電線であり、各種合成樹脂や天然樹脂など
の有機樹脂を含む絶縁塗料（ワニス）を塗布し、焼き付
けたエナメル線が広く使用されている。最近では、電気
・電子機器の小型軽量化、信頼性向上に対応するため
に、耐熱性に優れたエナメル線の需要が増大している。
そして、絶縁電線は、絶縁塗料に使用する有機樹脂の種
類によって、例えば、ポリエステル線、ポリウレタン
線、エポキシ線、ポリエステルイミド線、ポリアミド
線、ポリイミド線、ホルマール線などに分類することが
できる。しかしながら、これら公知の絶縁電線は、いず
れも前記のようなスロット内により多くの絶縁電線を詰
め込む用途には、捲線加工時に損傷が避けられない。By the way, an insulated electric wire is an electric wire having a structure in which a conductor is covered with an insulating material, and an enameled wire applied with an insulating paint (varnish) containing an organic resin such as various synthetic resins or natural resins and baked is widely used. Has been done. Recently, in order to reduce the size and weight of electric and electronic devices and to improve reliability, demand for enameled wires having excellent heat resistance is increasing.
The insulated wire can be classified into, for example, a polyester wire, a polyurethane wire, an epoxy wire, a polyesterimide wire, a polyamide wire, a polyimide wire, a formal wire, etc., depending on the type of organic resin used in the insulating paint. However, in any of these known insulated wires, damage is inevitable during the winding process for the purpose of packing more insulated wires in the slots as described above.
【０００４】従来の絶縁塗料の中でも、ポリアミドイミ
ド塗料は、捲線加工時に比較的損傷の少ない皮膜を形成
するため、前記のような用途に使用されてきた。ポリア
ミドイミドは、通常、芳香族トリカルボン酸と芳香族ジ
アミンとから合成され、合成法には、酸クロリド法やイ
ソシアネート法、直接重縮合法などがある。イソシアネ
ート法では、芳香族ジアミンのアミノ基をイソシアネー
ト基に変え、これとカルボキシル基との速い反応を利用
する。具体的には、トリメリット酸無水物とジフェニル
メタン−４，４′−ジイソシアネートから合成されたポ
リアミドイミドが代表的なものである。Among the conventional insulating paints, the polyamide-imide paint has been used for the above-mentioned applications because it forms a film that is relatively less damaged during winding. Polyamideimide is usually synthesized from an aromatic tricarboxylic acid and an aromatic diamine, and the synthesis method includes an acid chloride method, an isocyanate method, a direct polycondensation method and the like. In the isocyanate method, the amino group of an aromatic diamine is converted into an isocyanate group, and a rapid reaction between this and a carboxyl group is utilized. Specifically, a typical example is a polyamideimide synthesized from trimellitic anhydride and diphenylmethane-4,4'-diisocyanate.
【０００５】しかし、上記ポリアミドイミド塗料を塗布
・焼き付けた絶縁電線でも、捲線加工時に損傷する場合
がある。そのような場合には、絶縁皮膜の表面に潤滑性
を付与する方法が検討されてきたが、皮膜の損傷を軽減
するには限界があり、より絶縁皮膜の損傷が少ない絶縁
電線、及び該皮膜を与える絶縁塗料の開発が望まれてい
る。However, even an insulated electric wire coated and baked with the above polyamide-imide coating may be damaged during winding. In such a case, a method of imparting lubricity to the surface of the insulating coating has been studied, but there is a limit to reducing damage to the insulating coating, and an insulated wire with less damage to the insulating coating, and the coating. It is desired to develop an insulating paint that will give
【０００６】[0006]
【発明が解決しようとする課題】本発明の目的は、捲線
加工時における絶縁皮膜の損傷が少なく、耐加工性に優
れた絶縁電線を提供することにある。また、本発明の目
的は、捲線加工時における損傷の少ない皮膜を与えるこ
とができる絶縁塗料を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an insulated electric wire which is less likely to be damaged by the insulating coating during winding and is excellent in workability. Another object of the present invention is to provide an insulating coating which can give a film with little damage during winding.
【０００７】本発明者らは、絶縁皮膜を硬くすれば傷が
つきにくくくなると考え、絶縁皮膜の弾性率を向上させ
ることに着目し、鋭意検討を重ねた結果、特定の繊維径
と繊維長を有するウイスカーを特定量配合した絶縁塗料
を用いることにより、耐加工性に優れた絶縁電線の得ら
れることを見いだした。本発明は、これらの知見に基づ
いて完成するに至ったものである。The inventors of the present invention thought that if the insulating film is hardened, the scratches are less likely to occur, paying attention to improving the elastic modulus of the insulating film, and as a result of intensive studies, as a result, a specific fiber diameter and fiber length were obtained. It was found that an insulated wire having excellent workability can be obtained by using an insulating coating material containing a specific amount of whiskers having. The present invention has been completed based on these findings.
【０００８】[0008]
【課題を解決するための手段】かくして、本発明によれ
ば、有機樹脂を含有する絶縁塗料において、繊維径２μ
ｍ以下かつ繊維長２５０μｍ以下のウイスカーを、該有
機樹脂１００重量部に対して、５〜９０重量部の割合で
含有せしめたことを特徴とする絶縁塗料が提供される。
また、本発明によれば、前記の絶縁塗料を、導体上に直
接または他の絶縁皮膜を介して、塗布・焼き付けした絶
縁電線が提供される。Thus, according to the present invention, in an insulating coating material containing an organic resin, the fiber diameter is 2 μm.
There is provided an insulating coating material characterized by containing whiskers having a length of m or less and a fiber length of 250 μm or less in a ratio of 5 to 90 parts by weight with respect to 100 parts by weight of the organic resin.
Further, according to the present invention, there is provided an insulated electric wire in which the above-mentioned insulating paint is applied / baked directly on a conductor or through another insulating film.
【０００９】以下、本発明について詳述する。ウイスカ
ーとは、理論強度に近いきわめて高い引張強さをもった
針状の単結晶性の物質である。ウイスカーを形成する物
質としては、金属、無機化合物、半導体、炭素などが知
られている。ウイスカーには、固体表面から素材と同じ
物質が自然成長したもののほか、蒸気相の凝縮、溶液か
らの析出、化合物の還元や熱分解などの相変化に伴って
成長したものなどがある。ウイスカーは、工業的には、
化学反応を用いた気相からの晶出現象などを利用して作
成され、例えば、チタン酸カリウムのウイスカーの場
合、焼成法、溶融法、水熱法、フラックス法、融体法な
ど各種の製造法が知られている。本発明で使用するウイ
スカーは、繊維径２μｍ以下で、かつ、繊維長２５０μ
ｍ以下のものであれば、特にその製造法は限定されな
い。The present invention will be described in detail below. Whiskers are needle-like single-crystal substances with extremely high tensile strength close to theoretical strength. Known substances that form whiskers are metals, inorganic compounds, semiconductors, carbon, and the like. Whiskers include those that spontaneously grow the same substance as the material from the solid surface, but also those that grow with phase changes such as condensation of the vapor phase, precipitation from solution, and reduction or thermal decomposition of compounds. Whiskers are industrially
It is created by utilizing the crystallization phenomenon from the vapor phase using a chemical reaction. For example, in the case of potassium titanate whiskers, various manufacturing methods such as firing method, melting method, hydrothermal method, flux method, melt method, etc. The law is known. The whiskers used in the present invention have a fiber diameter of 2 μm or less and a fiber length of 250 μm.
The manufacturing method is not particularly limited as long as it is m or less.
【００１０】ウイスカーには、例えば、チタン酸カリウ
ム、ホウ酸アルミニウム、炭化ケイ素、窒化ケイ素、硫
酸カルシウム、ホウ酸マグネシウムなどのウイスカーが
挙げられる。これらの中でも、コストや特性を考慮する
と、チタン酸カリウム（大塚化学社製、ティスモ）及び
ホウ酸アルミニウム（四国化成社製、アルボレックス）
が特に好ましい。Examples of whiskers include whiskers such as potassium titanate, aluminum borate, silicon carbide, silicon nitride, calcium sulfate and magnesium borate. Among these, considering cost and characteristics, potassium titanate (Otsuka Chemical Co., Tismo) and aluminum borate (Shikoku Kasei Co., Arbolex)
Is particularly preferable.
【００１１】ウイスカーには、直径（繊維径）が数μｍ
から数十μｍ、長さ（繊維径）が数百μｍ以上のものが
多数あるが、本発明では、繊維径が２μｍ以下で、繊維
長が２５０μｍ以下のものを使用する。ウイスカーを含
有する絶縁塗料を導体上に塗布・焼き付けする場合、ウ
イスカーの繊維径及び繊維長が大きすぎると、ダイス等
に詰まりやすい。また、ウイスカーの繊維径及び繊維長
が大きすぎると、絶縁電線の可とう性が損なわれ、弾性
率も向上せず、皮膜が損傷しやすくなる。ウイスカーの
繊維径は、小さいほど引張強度が大きくなるため、１．
５μｍ以下であることが好ましい。ウイスカーの繊維長
は、２００μｍ以下であることが好ましい。Whiskers have a diameter (fiber diameter) of several μm.
There are many materials having a fiber diameter of 2 μm or less and a fiber length of 250 μm or less. When an insulating coating material containing whiskers is applied and baked on a conductor, if the whisker fiber diameter and fiber length are too large, the dies or the like are likely to be clogged. If the fiber diameter and the fiber length of the whisker are too large, the flexibility of the insulated wire is impaired, the elastic modulus is not improved, and the film is easily damaged. The smaller the fiber diameter of the whiskers, the higher the tensile strength.
It is preferably 5 μm or less. The fiber length of the whiskers is preferably 200 μm or less.
【００１２】ウイスカーの配合割合は、絶縁塗料中の有
機樹脂（非揮発分）１００重量部に対して、５〜９０重
量部である。この割合が５重量部未満であると、絶縁皮
膜の弾性率向上の度合いが小さく、耐加工性も改善され
ない。逆に、９０重量部より多いと、皮膜の伸びが著し
く、絶縁電線として可とう性、２０％急伸後の可とう性
が悪くなる。ウイスカーの配合割合は、好ましくは１０
〜８０重量部、より好ましくは１５〜５０重量部であ
る。The blending ratio of the whiskers is 5 to 90 parts by weight with respect to 100 parts by weight of the organic resin (nonvolatile content) in the insulating paint. If this ratio is less than 5 parts by weight, the degree of improvement of the elastic modulus of the insulating film is small and the workability is not improved. On the other hand, if it is more than 90 parts by weight, the elongation of the film is remarkable, and the flexibility as an insulated wire and the flexibility after being rapidly stretched by 20% deteriorate. The blending ratio of whiskers is preferably 10
-80 parts by weight, more preferably 15-50 parts by weight.
【００１３】本発明においてウイスカーを配合する絶縁
塗料は、特に限定はなく、公知のものが使用できる。具
体的には、有機樹脂として、例えば、ポリウレタン、ポ
リエステル、ポリビニルホルマール、ポリエステルイミ
ド、ポリエステルアミドイミド、ポリアミドイミド、ポ
リイミド、ナイロン、芳香族ポリアミド、ポリパラバン
酸等を含有する絶縁塗料が挙げられる。これらの中で
も、ポリアミドイミド系絶縁塗料が好ましい。In the present invention, the insulating coating material containing the whiskers is not particularly limited, and known ones can be used. Specific examples of the organic resin include insulating coatings containing polyurethane, polyester, polyvinyl formal, polyesterimide, polyesteramide imide, polyamide imide, polyimide, nylon, aromatic polyamide, polyparabanic acid, and the like. Among these, polyamide-imide type insulating paint is preferable.
【００１４】ウイスカーの絶縁塗料への配合の仕方は、
ディゾルバー、サンドミル、ボールミル、３本ロール等
で均一に分散する方法が好ましい。また、上記絶縁塗料
には必要に応じて、各種潤滑剤、顔料、無機微粉末等を
併せて添加することもできる。The method of blending the whiskers with the insulating paint is
A method of uniformly dispersing with a dissolver, sand mill, ball mill, three rolls or the like is preferable. If necessary, various lubricants, pigments, inorganic fine powders, etc. may be added to the above-mentioned insulating paint.
【００１５】本発明の絶縁塗料を絶縁電線の絶縁皮膜形
成用に使用する場合には、常法にしたがって、導体上に
塗布・焼き付けすればよい。ただし、捲線加工時の損傷
を避ける目的のためには、導体上に直接塗布し、焼き付
けたものだけではなく、他の絶縁塗料からなる絶縁皮膜
を介して、その上に塗布・焼き付けてもよい。他の絶縁
皮膜を形成する材質については、特に限定はなく、公知
の絶縁塗料を塗布・焼き付けたものなどが使用できる。
また、導体は、丸線、平角線など所望の形状のものが使
用でき、そのサイズも限定されない。When the insulating coating material of the present invention is used for forming an insulating film on an insulated wire, it may be applied and baked on a conductor according to a conventional method. However, for the purpose of avoiding damage at the time of winding, not only the one directly applied on the conductor and baked, but also applied / baked on it through an insulating film made of another insulating paint .. The material for forming the other insulating film is not particularly limited, and a known insulating coating material applied / baked can be used.
The conductor may have a desired shape such as a round wire or a rectangular wire, and its size is not limited.
【００１６】[0016]
【実施例】以下、本発明について実施例及び比較例を挙
げてさらに具体的に説明するが、本発明は、これらの実
施例のみに限定されるものではない。EXAMPLES The present invention will be described more specifically below with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.
【００１７】［比較例１］ポリアミドイミド絶縁塗料
（日立化成社製の耐熱電線用エナメルワニス；ＨＩ−４
００）を、直径１．０ｍｍの銅線上に塗布・焼き付け
し、皮膜厚０．０３５ｍｍのポリアミドイミド線を作成
した。得られたポリアミドイミド線の外観、皮膜の弾性
率、可とう性、及び一方向摩耗による皮膜損傷荷重を測
定し、その結果を表１に示した。[Comparative Example 1] Polyamide-imide insulating paint (Enamel varnish for heat-resistant electric wires manufactured by Hitachi Chemical Co., Ltd .; HI-4)
00) was applied and baked on a copper wire having a diameter of 1.0 mm to prepare a polyamide-imide wire having a film thickness of 0.035 mm. The appearance of the obtained polyamide-imide wire, the elastic modulus of the film, the flexibility, and the film damage load due to unidirectional wear were measured, and the results are shown in Table 1.
【００１８】［実施例１］ポリアミドイミド絶縁塗料
（日立化成社製、ＨＩ−４００）に、樹脂１００重量部
に対して、繊維径１．０μｍ、繊維長５０μｍのチタン
酸カリウムのウイスカー（大塚化学社製、ティスモ−
Ｄ）１０重量部を添加し、ディゾルバーで５分間混合し
て絶縁塗料を調製した。得られた絶縁塗料を、直径１．
０ｍｍの銅線上に塗布・焼き付けし、皮膜厚０．０３５
ｍｍのポリアミドイミド線を作成した。得られたポリア
ミドイミド線の外観、皮膜の弾性率、可とう性、及び一
方向摩耗による皮膜損傷荷重を測定し、その結果を表１
に示した。[Example 1] A polyamide-imide insulating coating (HI-400 manufactured by Hitachi Chemical Co., Ltd.) was added to a whisker of potassium titanate having a fiber diameter of 1.0 µm and a fiber length of 50 µm per 100 parts by weight of resin (Otsuka Chemical). Manufactured by Tismo
D) 10 parts by weight was added and mixed by a dissolver for 5 minutes to prepare an insulating paint. The obtained insulating paint was treated with a diameter of 1.
Coating and baking on 0mm copper wire, film thickness 0.035
mm of polyamide-imide wire was prepared. The appearance of the obtained polyamide-imide wire, the elastic modulus of the film, the flexibility, and the film damage load due to unidirectional wear were measured, and the results are shown in Table 1.
It was shown to.
【００１９】［実施例２］実施例１において、ティスモ
−Ｄの添加量を２０重量部に変えた以外は、同様にして
絶縁電線を作成し、物性を評価し、その結果を表１に示
した。Example 2 An insulated wire was prepared in the same manner as in Example 1 except that the amount of Tismo-D added was changed to 20 parts by weight, and the physical properties were evaluated. The results are shown in Table 1. It was
【００２０】［実施例３］実施例１において、ティスモ
−Ｄの添加量を５０重量部に変えた以外は、同様にして
絶縁電線を作成し、物性を評価し、その結果を表１に示
した。Example 3 An insulated wire was prepared in the same manner as in Example 1 except that the addition amount of Tismo-D was changed to 50 parts by weight, and the physical properties were evaluated. The results are shown in Table 1. It was
【００２１】［実施例４］実施例１において、ティスモ
−Ｄの添加量を８０重量部に変えた以外は、同様にして
絶縁電線を作成し、物性を評価し、その結果を表１に示
した。[Example 4] An insulated wire was prepared in the same manner as in Example 1 except that the addition amount of Tismo-D was changed to 80 parts by weight, and the physical properties were evaluated. The results are shown in Table 1. It was
【００２２】［比較例２］実施例１において、ティスモ
−Ｄの添加量を３重量部に変えた以外は、同様にして絶
縁電線を作成し、物性を評価し、その結果を表１に示し
た。［比較例３］実施例１において、ティスモ−Ｄの添
加量を１００重量部に変えた以外は、同様にして絶縁電
線を作成し、物性を評価し、その結果を表１に示した。[Comparative Example 2] An insulated wire was prepared in the same manner as in Example 1 except that the addition amount of Tismo-D was changed to 3 parts by weight, and the physical properties were evaluated. The results are shown in Table 1. It was [Comparative Example 3] An insulated wire was prepared in the same manner as in Example 1 except that the addition amount of Tismo-D was changed to 100 parts by weight, and the physical properties were evaluated. The results are shown in Table 1.
【００２３】［実施例５］実施例１のティスモ−Ｄにか
えて、繊維径１．０μｍ、繊維長３０μｍのホウ酸アル
ミニウムのウイスカー（四国化成社製、アルボレックス
Ｇ）を用いたこと以外は、実施例２と同様にして絶縁電
線を作成し、物性を評価し、その結果を表１に示した。[Example 5] An aluminum borate whisker having a fiber diameter of 1.0 µm and a fiber length of 30 µm (Arborex G, manufactured by Shikoku Kasei Co., Ltd.) was used in place of the Tismo-D of Example 1. An insulated electric wire was prepared in the same manner as in Example 2, the physical properties thereof were evaluated, and the results are shown in Table 1.
【００２４】［実施例６］実施例１のティスモ−Ｄにか
えて、繊維径１．５μｍ、繊維長２００μｍの窒化ケイ
素（Ｓｉ3Ｎ4）のウイスカーを用いたこと以外は、実施
例２と同様にして絶縁電線を作成し、物性を評価し、そ
の結果を表１に示した。Example 6 Example 2 was repeated except that a silicon nitride (Si 3 N 4 ) whisker having a fiber diameter of 1.5 μm and a fiber length of 200 μm was used instead of the Tismo-D of Example 1. An insulated wire was prepared in the same manner and the physical properties were evaluated, and the results are shown in Table 1.
【００２５】［比較例４］実施例１のティスモ−Ｄにか
えて、繊維径５．０μｍ、繊維長５００μｍのＭｇＯの
ウイスカーを用いたこと以外は、実施例２と同様にして
絶縁電線を作成し、物性を評価し、その結果を表１に示
した。[Comparative Example 4] An insulated wire was prepared in the same manner as in Example 2 except that MgO whiskers having a fiber diameter of 5.0 µm and a fiber length of 500 µm were used instead of the Tismo-D of Example 1. Then, the physical properties were evaluated, and the results are shown in Table 1.
【００２６】物性評価の方法は、次のとおりである。 ＜外観＞絶縁電線の外観を目視にて観察し、良、不良を
評価した。The method of evaluating physical properties is as follows. <Appearance> The appearance of the insulated wire was visually observed to evaluate whether it was good or bad.
【００２７】＜可とう性＞絶縁電線に、直径１ｍｍ（自
己径）の丸棒をあてがって、電線を丸棒の外径に対応さ
せて曲げた際の絶縁皮膜の割れや剥れの状況を観察し、
良、不良を評価した。<Flexibility> When a round bar having a diameter of 1 mm (self-diameter) is applied to an insulated wire and the wire is bent to correspond to the outer diameter of the round bar, the insulation film is cracked or peeled off. Observe,
Good and bad were evaluated.
【００２８】＜一方向摩耗試験＞ＪＩＳ Ｃ ３００３
に準拠した。<One-Way Wear Test> JIS C 3003
Compliant with.
【００２９】＜弾性率＞絶縁電線から銅線をエッチング
して除去し、残った絶縁皮膜（長さ６ｃｍ）について、
引張試験機を用いて、チャック間隔３ｃｍ、引張速度１
ｍｍ／分の条件で引張試験し、得られたＳ−Ｓカーブか
ら弾性率を求めた。<Elastic Modulus> The copper wire was removed from the insulated wire by etching, and the remaining insulating film (length 6 cm) was
Using a tensile tester, chuck spacing 3 cm, pulling speed 1
A tensile test was conducted under the condition of mm / min, and the elastic modulus was obtained from the obtained SS curve.
【００３０】[0030]
【表１】 [Table 1]
【００３１】表１から明らかなように、本発明の絶縁塗
料を塗布・焼き付けした絶縁電線（実施例１〜６）は、
ウイスカーを添加していない絶縁塗料を用いた場合（比
較例１）と比べて、皮膜の弾性率が向上し、それにつれ
て、一方向摩耗性が向上している。ウイスカーを添加し
ても、本発明の範囲外の場合（比較例２〜４）には、改
善効果が得られない。As is clear from Table 1, the insulated wires coated with the insulating coating material of the present invention and baked (Examples 1 to 6)
The elastic modulus of the film is improved and the one-way wear property is improved as compared with the case of using the insulating coating without the addition of whiskers (Comparative Example 1). Even if the whiskers are added, the improvement effect cannot be obtained if they are outside the scope of the present invention (Comparative Examples 2 to 4).
【００３２】[0032]
【発明の効果】本発明によれば、外観、可とう性、弾性
率、一方向摩耗性に優れ、捲線加工時における絶縁皮膜
の損傷が少なく、耐加工性に優れた絶縁電線が提供され
る。また、本発明によれば、このような絶縁皮膜を形成
できる絶縁塗料が提供される。したがって、本発明の工
業的価値は大きい。EFFECTS OF THE INVENTION According to the present invention, there is provided an insulated wire which is excellent in appearance, flexibility, elastic modulus and unidirectional wear resistance, has less damage to the insulating film during winding, and has excellent workability. .. Further, according to the present invention, an insulating coating material capable of forming such an insulating film is provided. Therefore, the industrial value of the present invention is great.
Claims (2)
繊維径２μｍ以下かつ繊維長２５０μｍ以下のウイスカ
ーを、該有機樹脂１００重量部に対して、５〜９０重量
部の割合で含有せしめたことを特徴とする絶縁塗料。1. An insulating coating material containing an organic resin,
An insulating paint comprising a whisker having a fiber diameter of 2 μm or less and a fiber length of 250 μm or less in a ratio of 5 to 90 parts by weight with respect to 100 parts by weight of the organic resin.
接または他の絶縁皮膜を介して、塗布・焼き付けした絶
縁電線。2. An insulated wire in which the insulating coating material according to claim 1 is applied / baked on a conductor directly or through another insulating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7273992A JPH05234423A (en) | 1992-02-20 | 1992-02-20 | Insulating coating and insulated electric wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7273992A JPH05234423A (en) | 1992-02-20 | 1992-02-20 | Insulating coating and insulated electric wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05234423A true JPH05234423A (en) | 1993-09-10 |
Family
ID=13498032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7273992A Pending JPH05234423A (en) | 1992-02-20 | 1992-02-20 | Insulating coating and insulated electric wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05234423A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106497398A (en) * | 2016-10-11 | 2017-03-15 | 陕西科技大学 | A kind of polyamide-imide insulating varnish of refractory surfaces self-lubricating |
| CN106634560A (en) * | 2016-10-11 | 2017-05-10 | 陕西科技大学 | Heat-resistant surface self-lubricating polyamide-imide insulating paint |
| CN106634561A (en) * | 2016-10-11 | 2017-05-10 | 陕西科技大学 | Heat-resistant surface self-lubricating polyamide-imide insulating paint |
-
1992
- 1992-02-20 JP JP7273992A patent/JPH05234423A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106497398A (en) * | 2016-10-11 | 2017-03-15 | 陕西科技大学 | A kind of polyamide-imide insulating varnish of refractory surfaces self-lubricating |
| CN106634560A (en) * | 2016-10-11 | 2017-05-10 | 陕西科技大学 | Heat-resistant surface self-lubricating polyamide-imide insulating paint |
| CN106634561A (en) * | 2016-10-11 | 2017-05-10 | 陕西科技大学 | Heat-resistant surface self-lubricating polyamide-imide insulating paint |
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