JP2005239765A - Inorganic filler-dispersed insulating paint and insulated wire - Google Patents
Inorganic filler-dispersed insulating paint and insulated wire Download PDFInfo
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本発明は、絶縁塗料および絶縁電線に関し、更に詳しくは、可撓性、伸張性、巻線性を維持しながら、課電寿命、耐熱性、耐磨耗性を向上させる絶縁電線に用いる無機フィラー分散絶縁塗料および絶縁電線に関するものである。 TECHNICAL FIELD The present invention relates to an insulating paint and an insulated wire, and more specifically, an inorganic filler dispersed in an insulated wire that improves the electrical service life, heat resistance, and wear resistance while maintaining flexibility, stretchability, and winding property. The present invention relates to an insulating paint and an insulated wire.
モータ、トランスなどの電機・電子機器には、ポリウレタン絶縁塗料を導体の外周に塗布，焼付したポリウレタン絶縁電線（ＵＥＷ）、ポリエステル絶縁塗料を導体の外周に塗布，焼付したポリエステル絶縁電線（ＰＥＷ）、ポリエステルイミド絶縁塗料を導体の外周に塗布，焼付したポリエステルイミド絶縁電線（ＥＩＷ）、ポリアミドイミド絶縁塗料を導体の外周に塗布，焼付したポリアミドイミド絶縁電線（ＡＩＷ）等の絶縁電線が用いられている。
近年、電機・電子機器の軽薄短小化が進むにつれて、モータ、トランスなどに使用する絶縁電線への信頼性向上の要求が高くなってきている。特にインバータ制御される機器に用いられる絶縁電線は部分放電による劣化を起こしにくい課電寿命に優れた絶縁電線が必要とされているが、上記従来の絶縁電線では満足する特性が得られなかった。そのため、下記特許文献１の発明「取り巻く絶縁体を有する導電体」では、酸化クロム、酸化鉄等の粉末充填剤（無機絶縁材料）を各種の絶縁塗料に添加、混合し、導体の外周に塗布，焼付して絶縁電線を製造している。
In recent years, as electrical and electronic devices have become lighter, thinner, and shorter, there has been an increasing demand for improved reliability of insulated wires used in motors, transformers, and the like. In particular, an insulated wire used for an inverter-controlled device is required to have an insulated wire that does not easily deteriorate due to partial discharge, and has an excellent electric life. However, the above-described conventional insulated wire cannot achieve satisfactory characteristics. For this reason, in the invention of “Patents having surrounding insulators” in Patent Document 1 below, powder fillers (inorganic insulating materials) such as chromium oxide and iron oxide are added to and mixed with various insulating paints and applied to the outer periphery of the conductor. , Baked to produce insulated wires.
課電寿命、耐熱性等を向上させるために無機絶縁材料を混合した絶縁塗料は無機絶縁材料の凝集、沈降等が発生し、安定性、作業性が悪いという問題点があった。また無機絶縁材料を絶縁塗料中に分散させる場合、ナノオーダーまで分散性を向上させることは困難であるという問題点があった。また分散性の悪い（ミクロンオーダー）絶縁塗料を塗布，焼付した絶縁電線は可撓性、伸張性が低下し、巻線性を損なうという問題点があった。
本発明は、上記従来技術が有する各種問題点を解決するためになされたものであり、可撓性、伸張性、巻線性を維持しながら、課電寿命、耐熱性、耐磨耗性を向上させる絶縁電線が得られる無機フィラー分散絶縁塗料、および絶縁電線を提供することを目的とする。
Insulating paints mixed with an inorganic insulating material in order to improve the charging life, heat resistance, and the like have a problem in that the inorganic insulating material is aggregated and settled, resulting in poor stability and workability. Further, when the inorganic insulating material is dispersed in the insulating paint, there is a problem that it is difficult to improve the dispersibility to the nano order. In addition, an insulated wire coated and baked with an insulating paint having a poor dispersibility (micron order) has a problem that flexibility and stretchability are lowered and winding property is impaired.
The present invention has been made to solve the various problems of the above-described conventional technology, and improves the electric charging life, heat resistance, and wear resistance while maintaining flexibility, stretchability, and winding property. An object of the present invention is to provide an inorganic filler-dispersed insulating paint from which an insulated wire is obtained, and an insulated wire.
第１の観点として本発明は、ベースとなる絶縁塗料中に無機フィラー（無機絶縁材料）を分散させた無機フィラー分散絶縁塗料であって、前記ベース絶縁塗料として、ポリウレタン系、ポリエステル系、ポリエステルイミド系、ポリアミドイミド系、またはポリイミド系の絶縁塗料を用い、また無機フィラーとして、アスペクト比(縦横比)が100〜500と高い層状の無機鉱物（以下、高アスペクト比無機鉱物と略記する）の表面を有機材料で表面処理し、分散性に優れた、粒子径0.1〜50μｍ、粒子厚1〜10ｎｍの有機処理無機鉱物（以下、高アスペクト比有機処理無機鉱物と略記する）を用い、該有機処理無機鉱物をベース絶縁塗料の樹脂分に対して0.5〜5.0wT%添加し、均一に分散させたことを特徴とする無機フィラー分散絶縁塗料にある。
前記ベース絶縁塗料として用いられるポリウレタン系絶縁塗料としては、例えば日立化成工業社製WD4307（商品名）、ポリエステル系絶縁塗料としては、例えば東特塗料社製LITON3300KF(商品名)、ポリエステルイミド系絶縁塗料としては、例えば東特塗料社製ネオヒート8600(商品名)、ポリアミドイミド系絶縁塗料としては、例えば東特塗料社製ネオヒートAI-34CX(商品名)、またポリイミド系絶縁塗料としては、例えば東レ社製トレニース(商品名)が挙げられる。また前記高アスペクト比無機鉱物としては、例えばベントナイト土(粘土鉱物)の成分である鱗片状無機鉱物「モンモリロナイト」が挙げられる。前記モンモリロナイトの表面を有機材料、例えば第4級アンモニウム化合物で表面改質することにより、非水系の樹脂や溶剤への分散に優れた粒子径0.1〜50μｍ、粒子厚1〜10ｎｍの高アスペクト比有機処理無機鉱物（フィラー材料）となる。例えばズードケミ触媒社製Nanofil 5、Nanofil 15（商品名）が挙げられる。なお、通常のカオリン（天然の花こう岩が風化してできた細かい粘土の白い粉）・タルク(滑石)・マイカ（雲母）等層状フィラーと比較すると、厚みが１０分の１から５０分の１となる。また、前記高アスペクト比有機処理無機鉱物が完全に層間剥離している場合は、粒子径100〜500ｎｍ、粒子厚1ｎｍ近辺となり、非常に高いアスペクト比（100以上）を実現することができる。
上記第１観点の無機フィラー分散絶縁塗料では、ベース絶縁塗料中に添加した高アスペクト比有機処理無機鉱物をナノオーダー級で均一に分散し、沈降を防止することができ、安定性、作業性に優れた絶縁塗料となる。また前記高アスペクト比有機処理無機鉱物はアスペクト比が大きい層状物であるため、ベース絶縁塗料に対する添加量が少量（0.5〜5.0wT%）で良いという利点がある。
なお高アスペクト比有機処理無機鉱物の添加量をベース絶縁塗料の樹脂分に対し0.5〜5.0wT%と限定した理由は、0.5wT%未満では絶縁電線にしたときに課電寿命、耐熱性等に対する効果が少なく、また5.0wT%を超えても課電寿命、耐熱性等に対する効果が限定範囲と変わらない上に、塗料の安定性がやや悪くなってしまうためである。
As a first aspect, the present invention provides an inorganic filler-dispersed insulating paint in which an inorganic filler (inorganic insulating material) is dispersed in a base insulating paint, and the base insulating paint includes polyurethane, polyester, and polyesterimide. , Polyamidoimide, or polyimide insulating coatings, and the surface of layered inorganic minerals (hereinafter abbreviated as high aspect ratio inorganic minerals) with high aspect ratios of 100 to 500 as inorganic fillers Surface treatment with an organic material, using an organically treated inorganic mineral (hereinafter abbreviated as a high aspect ratio organically treated inorganic mineral) having an excellent dispersibility and a particle diameter of 0.1 to 50 μm and a particle thickness of 1 to 10 nm. An inorganic filler-dispersed insulating coating is characterized in that an inorganic mineral is added in an amount of 0.5 to 5.0 wT% to the resin content of the base insulating coating and uniformly dispersed.
Examples of the polyurethane insulating paint used as the base insulating paint include WD4307 (trade name) manufactured by Hitachi Chemical Co., Ltd., and examples of the polyester insulating paint include LITON3300KF (trade name) manufactured by Tohoku Paint Co., Ltd., polyesterimide insulating paint. For example, Tohoku Paint Co., Ltd. Neoheat 8600 (trade name), Polyamideimide insulating paint, for example, Tohoku Paint Co., Ltd. Neoheat AI-34CX (trade name), and polyimide-based insulating paint, for example, Toray Industries, Inc. Trenice made (trade name) is listed. Examples of the high aspect ratio inorganic mineral include scale-like inorganic mineral “montmorillonite” which is a component of bentonite earth (clay mineral). By modifying the surface of the montmorillonite with an organic material such as a quaternary ammonium compound, it is excellent in dispersion in a non-aqueous resin or solvent, and has a high particle diameter of 0.1 to 50 μm and a particle thickness of 1 to 10 nm. It becomes a treated inorganic mineral (filler material). For example, Nanofil 5 and Nanofil 15 (trade names) manufactured by Zudekemi Catalysts are listed. Compared with ordinary fillers such as kaolin (white clay powder made by weathering natural granite), talc (talc) and mica (mica), the thickness is 1/10 to 50 minutes. 1 When the high aspect ratio organically treated inorganic mineral is completely delaminated, the particle diameter is 100 to 500 nm and the particle thickness is around 1 nm, and a very high aspect ratio (100 or more) can be realized.
In the inorganic filler-dispersed insulating paint of the first aspect, the high-aspect ratio organically treated inorganic mineral added to the base insulating paint can be uniformly dispersed at the nano-order level to prevent settling, thereby improving stability and workability. It becomes an excellent insulating paint. Further, since the high aspect ratio organically treated inorganic mineral is a layered material having a large aspect ratio, there is an advantage that a small amount (0.5 to 5.0 wT%) of addition to the base insulating paint is sufficient.
The reason for limiting the amount of high-aspect-ratio organically treated inorganic mineral to 0.5 to 5.0 wT% of the resin content of the base insulating paint This is because the effect is small, and even if it exceeds 5.0 wT%, the effect on the electric charging life, heat resistance, etc. is not different from the limited range, and the stability of the paint is slightly deteriorated.
第２の観点として本発明は、第１観点記載の無機フィラー分散絶縁塗料に、更にシランカップリング剤を前記無機フィラーの添加量に対し0.1〜4.0wT%添加し、均一に分散させたことを特徴とする無機フィラー分散絶縁塗料にある。
上記第２観点の無機フィラー分散絶縁塗料では、更にシランカップリング剤を前記無機フィラーの添加量に対し0.1〜4.0wT%添加することで塗料の分散性、安定性が更に向上する。なお、シランカップリング剤の添加量を0.1〜4.0wT%と限定した理由は、この限定範囲外では塗料の分散性、安定性の向上に大きな効果が得られない為である。
As a second aspect, the present invention is that the silane coupling agent is further added to the inorganic filler-dispersed insulating paint described in the first aspect in an amount of 0.1 to 4.0 wT% with respect to the added amount of the inorganic filler and uniformly dispersed. The feature is an inorganic filler-dispersed insulating coating.
In the inorganic filler-dispersed insulating paint according to the second aspect, the dispersibility and stability of the paint are further improved by adding 0.1 to 4.0 wT% of a silane coupling agent with respect to the amount of the inorganic filler added. The reason why the addition amount of the silane coupling agent is limited to 0.1 to 4.0 wT% is that a great effect cannot be obtained in improving the dispersibility and stability of the coating material outside this limited range.
第３の観点として本発明は、導体の外周に、第１または第２観点記載の無機フィラー分散絶縁塗料を塗布，焼付して無機フィラー分散絶縁皮膜を設けたことを特徴とする絶縁電線にある。
前記導体としては、例えばCu(銅)、Al(アルミニウム)、CCA（銅クラッドアルミニウム）等が用いられる。
上記第３観点の絶縁電線では、無機フィラー分散絶縁皮膜中の無機フィラーが耐熱性、耐磨耗性を向上させ、また部分放電劣化を防止することにより課電寿命を向上させる。また無機フィラーは絶縁皮膜中にナノオーダーで分散しているため可撓性、伸張性、巻線性が低下しない。
As a third aspect, the present invention is an insulated wire characterized in that an inorganic filler-dispersed insulating coating is provided on the outer periphery of a conductor by applying and baking the inorganic filler-dispersed insulating coating described in the first or second aspect. .
As the conductor, for example, Cu (copper), Al (aluminum), CCA (copper clad aluminum) or the like is used.
In the insulated wire of the said 3rd viewpoint, the inorganic filler in an inorganic filler dispersion | distribution insulating film improves heat resistance, abrasion resistance, and improves electrical charging lifetime by preventing partial discharge deterioration. In addition, since the inorganic filler is dispersed in the order of nanometers in the insulating film, flexibility, stretchability, and winding property do not deteriorate.
第４の観点として本発明は、導体の外周に、汎用絶縁塗料を塗布，焼付して下層の汎用絶縁皮膜を設け、更にこの外周に第１または第２観点の無機フィラー分散絶縁塗料を塗布，焼付して上層の無機フィラー分散絶縁皮膜を設け、２層絶縁構造としたことを特徴とする絶縁電線にある。
前記汎用絶縁塗料（汎用絶縁皮膜）としては、ポリウレタン系、ポリエステル系、ポリエステルイミド系、ポリアミドイミド系の汎用絶縁塗料（汎用絶縁皮膜）が用いられる。
上記第４観点の絶縁電線では、無機フィラー分散絶縁皮膜が下層の汎用絶縁皮膜の上層に設けられているので、上記第３観点の絶縁電線と同様の作用・効果を有する。なお絶縁電線を２層構造にしたのは、無機フィラーを含有した絶縁皮膜は誘電率が高くなり、絶縁破壊電圧値が低下するため皮膜厚を厚くする必要があるが、汎用絶縁皮膜との二層構造にすることで、皮膜厚を薄くすることが可能となるためである。
As a fourth aspect of the present invention, a general-purpose insulating paint is applied to the outer periphery of the conductor and baked to provide a lower-layer general-purpose insulating coating, and further, the inorganic filler-dispersed insulating paint of the first or second aspect is applied to the outer periphery. The insulated wire is characterized in that it is baked to provide an upper layer inorganic filler dispersed insulating film to form a two-layer insulating structure.
As the general-purpose insulating paint (general-purpose insulating film), a polyurethane-based, polyester-based, polyesterimide-based, or polyamide-imide-based general-purpose insulating paint (general-purpose insulating film) is used.
In the insulated wire according to the fourth aspect, since the inorganic filler-dispersed insulating film is provided in the upper layer of the lower-layer general-purpose insulating film, it has the same operations and effects as the insulated wire according to the third aspect. Note that the insulated wire has a two-layer structure because the insulating film containing an inorganic filler has a high dielectric constant and the dielectric breakdown voltage value decreases, so the film thickness must be increased. This is because the layer thickness can be reduced by using a layer structure.
第５の観点として本発明は、導体の外周に、第１または第２観点の無機フィラー分散絶縁塗料を塗布，焼付して下層の無機フィラー分散絶縁皮膜を設け、更にこの外周に汎用絶縁塗料を塗布，焼付して上層の汎用絶縁皮膜を設け、２層絶縁構造としたことを特徴とする絶縁電線にある。
前記上層の汎用絶縁皮膜としては、前記下層の汎用絶縁皮膜として用いられるものの他に、潤滑性ポリアミドイミド系、潤滑性ナイロン系等の潤滑性絶縁皮膜が用いられる。
上記第５観点の絶縁電線では、無機フィラー分散絶縁皮膜が上層の汎用絶縁皮膜の下層に設けられており、２層構造と成っているので、上記第３、第４観点の絶縁電線と同様の作用・効果を有する。
As a fifth aspect, the present invention provides an inorganic filler-dispersed insulating coating of the first or second aspect on the outer periphery of the conductor and baked to provide a lower-layer inorganic filler-dispersed insulating coating, and a general-purpose insulating coating on the outer periphery. An insulated wire is characterized in that a two-layer insulation structure is provided by applying and baking to an upper-layer general-purpose insulation film.
As the upper-layer general-purpose insulating film, in addition to those used as the lower-layer general-purpose insulating film, a lubricating insulating film such as a lubricating polyamideimide type or a lubricating nylon type is used.
In the insulated wire of the fifth aspect, the inorganic filler-dispersed insulating film is provided in the lower layer of the upper general-purpose insulating film, and has a two-layer structure. Therefore, the insulated wire is the same as the insulated wire of the third and fourth aspects. Has action and effect.
本発明の絶縁塗料によれば、ベース絶縁塗料に分散させる無機フィラーとして、高アスペクト比有機処理無機鉱物を用い、該有機処理無機鉱物をベース絶縁塗料の樹脂分に対して0.5〜5.0wT%添加し、均一に分散させているので、凝集、沈降等が全く発生しないうえに、無機フィラーの分散が効率良く行え、ナノオーダーで均一に分散が可能となった。従って、安定性、作業性に優れた絶縁塗料を得ることができた。また更にシランカップリング剤を併用することで分散性、安定性が向上した。また前記高アスペクト比有機処理無機鉱物はアスペクト比が大きい層状物であるため、ベース絶縁塗料に対する添加量が少量（0.5〜5.0wT%）で良かった。
また本発明の絶縁電線によれば、無機フィラー分散絶縁皮膜中の無機フィラーが耐熱性、耐磨耗性を向上させ、また部分放電劣化を防止して課電寿命を向上させた。また無機フィラーは絶縁皮膜中にナノオーダーで分散しているため可撓性、伸張性、巻線性が低下しなかった。
また本発明の塗料を下層または上層に塗布，焼付し、かつ汎用絶縁塗料を上層または下層に塗布，焼付した絶縁電線は可撓性、伸張性、巻線性を維持しながら、課電寿命、耐熱性、耐磨耗性を向上させることが可能となった。従って、本発明は産業上に寄与する効果が極めて大である。
According to the insulating paint of the present invention, a high aspect ratio organically treated inorganic mineral is used as the inorganic filler dispersed in the base insulating paint, and the organically treated inorganic mineral is added in an amount of 0.5 to 5.0 wT% based on the resin content of the base insulating paint. In addition, since the particles are uniformly dispersed, no aggregation, sedimentation or the like occurs, and the inorganic filler can be dispersed efficiently, and the nano-order can be uniformly dispersed. Accordingly, an insulating paint excellent in stability and workability could be obtained. Furthermore, dispersibility and stability were improved by using a silane coupling agent in combination. Further, since the high aspect ratio organically treated inorganic mineral is a layered material having a large aspect ratio, a small amount (0.5 to 5.0 wT%) of addition to the base insulating paint is sufficient.
Further, according to the insulated wire of the present invention, the inorganic filler in the inorganic filler-dispersed insulating film improves the heat resistance and wear resistance, prevents partial discharge deterioration, and improves the charging life. In addition, since the inorganic filler is dispersed in the order of nanometers in the insulating film, flexibility, stretchability, and winding property did not deteriorate.
Insulated wires that are coated and baked with the paint of the present invention on the lower layer or the upper layer and general-purpose insulating paints are baked on the upper layer or the lower layer, while maintaining flexibility, extensibility, and winding properties, while maintaining the electric life and heat resistance. And wear resistance can be improved. Therefore, the present invention has an extremely large effect contributing to the industry.
以下、本発明の内容を、図に示す実施の形態により更に詳細に説明する。なお、これにより本発明が限定されるものではない。
図１は、本発明の絶縁電線の第１実施形態（実施例１-２）を示す断面図である（比較例１−２も示す）。図２は、本発明の絶縁電線の第２実施形態（実施例２-２）を示す断面図である（比較例２−２も示す）。また図３は、本発明の絶縁電線の第３実施形態（実施例３-２）を示す断面図である（比較例３−２も示す）。
これらの図において、１は導体、２，２ａは無機フィラー分散絶縁皮膜（高アスペクト比有機処理無機鉱物分散絶縁皮膜）、２’は絶縁皮膜（ポリアミドイミド絶縁皮膜）（ベース絶縁塗料皮膜）、２ａ’は絶縁皮膜（ポリエステル絶縁皮膜）（ベース絶縁塗料皮膜）、３ａは汎用絶縁皮膜（ポリエステルイミド絶縁皮膜）、３ｂは汎用絶縁皮膜（ポリアミドイミド絶縁皮膜）、１０，２０，３０は本発明の絶縁電線、また１０’，２０’，３０’は比較例の絶縁電線である。
Hereinafter, the contents of the present invention will be described in more detail with reference to embodiments shown in the drawings. Note that the present invention is not limited thereby.
FIG. 1 is a cross-sectional view showing a first embodiment (Example 1-2) of an insulated wire of the present invention (Comparative Example 1-2 is also shown). FIG. 2: is sectional drawing which shows 2nd Embodiment (Example 2-2) of the insulated wire of this invention (Comparative example 2-2 is also shown). Moreover, FIG. 3 is sectional drawing which shows 3rd Embodiment (Example 3-2) of the insulated wire of this invention (Comparative Example 3-2 is also shown).
In these figures, 1 is a conductor, 2, 2a is an inorganic filler dispersed insulating film (high aspect ratio organically treated inorganic mineral dispersed insulating film), 2 'is an insulating film (polyamideimide insulating film) (base insulating paint film), 2a 'Is an insulating film (polyester insulating film) (base insulating paint film), 3a is a general-purpose insulating film (polyesterimide insulating film), 3b is a general-purpose insulating film (polyamideimide insulating film), 10, 20, and 30 are the insulating films of the present invention. Electric wires, and 10 ', 20', and 30 'are insulated wires of comparative examples.
本発明の無機フィラー分散絶縁塗料および絶縁電線の第１実施例について説明する。
（実施例１−１）＜無機フィラー分散絶縁塗料の調製＞
本発明の無機フィラー分散絶縁塗料の第１実施例について説明する。
ベース絶縁塗料として、東特塗料社製ポリアミドイミド系塗料ネオヒートAI-34CX（濃度34%）を用い、該ベース絶縁塗料500g中へ、該塗料中のポリアミドイミド樹脂に対して高アスペクト比有機処理無機鉱物の添加量が2%となるようにズードケミ触媒社製Nanofil 5（商品名）3.4gを添加して攪拌混合を行い、ベース絶縁塗料中に有機処理無機鉱物を均一に分散させ、有機処理無機鉱物分散AI-34CX（有機処理無機鉱物分散絶縁塗料）（無機フィラー分散絶縁塗料）を調製した。
（実施例１−２）＜絶縁電線の製造＞
本発明の絶縁電線の第１実施例について図１を用いて説明する。
導体(1)として、導体径φ0.2mmの銅線を用い、この銅線上に塗料塗布装置により、上記方法で調製した有機処理無機鉱物分散AI-34CXをフェルトにより塗布し、3m長の横型式電気炉を用い、皮膜厚が15μmとなるよう焼付を行い、有機処理無機鉱物分散ポリアミドイミド絶縁皮膜（無機フィラー分散絶縁皮膜）(2)を設けて、絶縁電線(10)を製造した。この際、電気炉の設定温度は400℃とし、線速は30m/minとした。なお、塗料塗布装置、電気炉は図示しない（以下も同様）。
1st Example of the inorganic filler dispersion | distribution insulating coating material of this invention and an insulated wire is demonstrated.
(Example 1-1) <Preparation of inorganic filler dispersed insulating paint>
A first embodiment of the inorganic filler-dispersed insulating paint of the present invention will be described.
Polyamideimide paint Neoheat AI-34CX (concentration 34%) manufactured by Tohoku Paint Co., Ltd. is used as the base insulating paint, and into the base insulating paint 500 g, high aspect ratio organically treated inorganic with respect to the polyamideimide resin in the paint Add 3.4g of Nanofil 5 (trade name) manufactured by Zudekemi Catalysts Co., Ltd. so that the amount of mineral added is 2%, and stir and mix to uniformly disperse the organically treated inorganic mineral in the base insulating paint. Mineral-dispersed AI-34CX (organically treated inorganic mineral-dispersed insulating paint) (inorganic filler-dispersed insulating paint) was prepared.
(Example 1-2) <Manufacture of insulated wires>
1st Example of the insulated wire of this invention is described using FIG.
As the conductor (1), using a copper wire with a conductor diameter of φ0.2 mm, the organically treated inorganic mineral dispersed AI-34CX prepared by the above method was applied on the copper wire with a felt coating device using a felt, and a 3 m long horizontal type Using an electric furnace, baking was carried out to a film thickness of 15 μm, and an organically treated inorganic mineral-dispersed polyamide-imide insulating film (inorganic filler-dispersed insulating film) (2) was provided to produce an insulated wire (10). At this time, the set temperature of the electric furnace was 400 ° C., and the linear velocity was 30 m / min. Note that the paint coating device and the electric furnace are not shown (the same applies below).
本発明の無機フィラー分散絶縁塗料および絶縁電線の第２実施例について説明する。
（実施例２−１）＜無機フィラー分散絶縁塗料の調製＞
本実施例の２層構造の絶縁電線の２層目に用いる無機フィラー分散絶縁塗料として、前記実施例１の有機処理無機鉱物分散絶縁塗料を用いた。なお１層目には汎用絶縁塗料を用いた。
（実施例２−２）＜絶縁電線の製造＞
本発明の絶縁電線の第２実施例について図２を用いて説明する。
導体(1)として、導体径φ0.2mmの銅線を用い、この銅線上に塗料塗布装置により、汎用絶縁塗料として、東特塗料社製ポリエステルイミド系塗料ネオヒート8600A（濃度30%）をフェルトにより塗布し、3m長の横型式電気炉を用い、皮膜厚が10μmとなるよう焼付を行い、ポリエステルイミド絶縁皮膜（汎用絶縁皮膜）(3a)を設け、更にこの絶縁皮膜(3a)の外周に、前記実施例１−２と同様にして、有機処理無機鉱物分散ポリアミドイミド絶縁皮膜(2)を設けて、絶縁電線(20)を製造した。なお、汎用絶縁塗料の焼付けと有機処理無機鉱物分散絶縁塗料の焼付けは同一電気炉を用いており、設定温度は400℃とし、線速は30m/minとした。
A second embodiment of the inorganic filler-dispersed insulating paint and insulated wire of the present invention will be described.
(Example 2-1) <Preparation of inorganic filler-dispersed insulating paint>
As the inorganic filler-dispersed insulating paint used in the second layer of the two-layer insulated wire of this example, the organically treated inorganic mineral-dispersed insulating paint of Example 1 was used. A general-purpose insulating paint was used for the first layer.
(Example 2-2) <Manufacture of insulated wires>
A second embodiment of the insulated wire of the present invention will be described with reference to FIG.
A copper wire with a conductor diameter of φ0.2mm was used as the conductor (1), and a polyester imide paint Neoheat 8600A (concentration 30%) manufactured by Tohoku Paint Co., Ltd. was felt as a general-purpose insulating paint on the copper wire using a paint coating device. Apply and baked using a horizontal electric furnace with a length of 3m to make the film thickness 10μm, and provide a polyesterimide insulating film (general purpose insulating film) (3a), and further on the outer periphery of this insulating film (3a), In the same manner as in Example 1-2, an organically treated inorganic mineral-dispersed polyamideimide insulating film (2) was provided to produce an insulated wire (20). The same electric furnace was used for baking the general-purpose insulating paint and the organically treated inorganic mineral-dispersed insulating paint, the set temperature was 400 ° C., and the linear velocity was 30 m / min.
本発明の無機フィラー分散絶縁塗料および絶縁電線の第３実施例について説明する。
（実施例３−１）＜無機フィラー分散絶縁塗料の調製＞
ベース絶縁塗料として、東特塗料社製ポリエステル系塗料LITON3300KF（濃度30%）を用い、該ベース絶縁塗料500g中へ、該塗料中のポリエステル樹脂に対して高アスペクト比有機処理無機鉱物の添加量が１wT%となるようにズードケミ触媒社製Nanofil 15（商品名）1.5gを添加し、さらに分散剤として、信越化学工業社製シランカップリング剤 KBM403（γ-グリシドキシプロピルトリメトシキシラン）0.03gを添加し攪拌混合を行い、ベース絶縁塗料中に有機処理無機鉱物を均一に分散させ、有機処理無機鉱物分散LITON3300KF（有機処理無機鉱物分散絶縁塗料）（無機フィラー分散絶縁塗料）を調製した。
（実施例３−２）＜絶縁電線の製造＞
本発明の絶縁電線の第３実施例について図３を用いて説明する。なお、本実施例の絶縁電線は２層構造の絶縁電線で、１層目に有機処理無機鉱物分散絶縁塗料、２層目に汎用絶縁塗料を塗布，焼付したものである。
導体(1)として、導体径φ0.2mmの銅線を用い、この銅線上に塗料塗布装置により、上記有機処理無機鉱物分散LITON3300KFをフェルトにより塗布し、3m長の横型式電気炉を用い、皮膜厚が10μmとなるよう焼付を行い、有機処理無機鉱物分散絶縁皮膜(2a)を設け、更にこの絶縁皮膜(2a)の外周に、汎用絶縁塗料として、東特塗料社製ポリアミドイミド系塗料ネオヒートAI-34CX（濃度34%）を皮膜厚が5μmとなるよう焼付を行い、ポリアミドイミド絶縁皮膜（汎用絶縁皮膜）(3b)を設けて絶縁電線(30)を製造した。なお、有機処理無機鉱物分散絶縁塗料の焼付けと汎用絶縁塗料の焼付けは同一電気炉を用いており、設定温度は400℃とし、線速は30m/minとした。
A third embodiment of the inorganic filler-dispersed insulating paint and insulated wire of the present invention will be described.
(Example 3-1) <Preparation of inorganic filler-dispersed insulating paint>
As the base insulation paint, polyester paint LITON3300KF (concentration 30%) manufactured by Tohoku Paint Co., Ltd. is used, and the amount of high aspect ratio organically treated inorganic mineral added to the base insulation paint 500g with respect to the polyester resin in the paint Add 1.5g of Nanofil 15 (trade name) manufactured by Zudekemi Catalysts Co., Ltd. to 1wT%, and 0.03g of silane coupling agent KBM403 (γ-glycidoxypropyltrimethoxysilane) manufactured by Shin-Etsu Chemical Co., Ltd. as a dispersant. Was added and stirred and mixed to uniformly disperse the organically treated inorganic mineral in the base insulating paint to prepare an organically treated inorganic mineral dispersed LITON3300KF (organic treated inorganic mineral dispersed insulating paint) (inorganic filler dispersed insulating paint).
(Example 3-2) <Manufacture of insulated wires>
A third embodiment of the insulated wire of the present invention will be described with reference to FIG. In addition, the insulated wire of a present Example is an insulated wire of 2 layer structure, and apply | coats and baked the general-purpose insulating paint in the 2nd layer with the organic processing inorganic mineral dispersion | distribution insulating paint in the 1st layer.
As the conductor (1), a copper wire having a conductor diameter of φ0.2 mm was used. On the copper wire, the above-mentioned organically treated inorganic mineral dispersion LITON3300KF was applied with felt using a paint coating device, and a 3 m long horizontal electric furnace was used. Baking is carried out to a thickness of 10 μm, an organically treated inorganic mineral dispersed insulating film (2a) is provided, and a polyamideimide paint Neoheat AI manufactured by Tohoku Paint Co., Ltd. is used as a general-purpose insulating paint on the outer periphery of this insulating film (2a). -34CX (concentration 34%) was baked to a film thickness of 5 μm, and a polyamideimide insulating film (general purpose insulating film) (3b) was provided to produce an insulated wire (30). Note that the same electric furnace was used for baking the organically treated inorganic mineral-dispersed insulating paint and the general-purpose insulating paint, the set temperature was 400 ° C., and the linear velocity was 30 m / min.
（比較例1）
（比較例１−１）＜絶縁塗料の調製＞
上記実施例１−１の有機処理無機鉱物分散AI-34CXの代わりに、ベース絶縁塗料として用いた東特塗料社製ポリアミドイミド系塗料ネオヒートAI-34CX（濃度34%）を用いた。
（比較例１−２）＜絶縁電線の製造＞
比較例１−２の絶縁電線について図１を用いて説明する。
上記ネオヒートAI-34CXを有機処理無機鉱物分散AI-34CXの代わり用いる他は上記実施例1-2と同様にして、導体径φ0.2mmの銅線(1)上に皮膜厚が15μmとなるよう塗布，焼付を行い、絶縁皮膜(2')を設けて、絶縁電線(10')を製造した。
(Comparative Example 1)
(Comparative Example 1-1) <Preparation of insulating paint>
Instead of the organically treated inorganic mineral-dispersed AI-34CX in Example 1-1, polyamide-imide paint Neoheat AI-34CX (concentration 34%) manufactured by Tohoku Paint Co., Ltd. used as the base insulating paint was used.
(Comparative Example 1-2) <Manufacture of insulated wires>
The insulated wire of Comparative Example 1-2 will be described with reference to FIG.
The film thickness is 15 μm on the copper wire (1) having a conductor diameter of 0.2 mm, in the same manner as in Example 1-2 except that the above-mentioned neoheat AI-34CX is used instead of the organically treated inorganic mineral-dispersed AI-34CX. Coating and baking were performed, and an insulating film (2 ′) was provided to produce an insulated wire (10 ′).
（比較例２）
（比較例２−１）＜絶縁塗料の調製＞
本比較例の２層構造の絶縁電線の２層目に用いる絶縁塗料として、上記実施例１−１の有機処理無機鉱物分散AI-34CXの代わりに、ベース絶縁塗料として用いたネオヒートAI-34CXを用いた。なお、１層目には実施例２−１と同じ汎用絶縁塗料を用いた。
（比較例２−２）＜絶縁電線の製造＞
比較例２−２の絶縁電線について図２を用いて説明する。
上記実施例２−２と同様にして、導体(1)として導体径φ0.2mmの銅線を用い、この銅線上に、汎用絶縁塗料として東特塗料社製ポリエステルイミド系塗料ネオヒート8600A（濃度30%）をフェルトにより塗布し、皮膜厚が5μmとなるよう焼付を行い、ポリエステルイミド絶縁皮膜（汎用絶縁皮膜）(3a)を設け、更にこの絶縁皮膜（3a）の外周に、上記実施例１−１のベース絶縁塗料として用いたネオヒートAI-34CXを塗布，焼付して絶縁皮膜（2'）を設けて、絶縁電線（20'）を製造した。
(Comparative Example 2)
(Comparative Example 2-1) <Preparation of insulating paint>
Insulating paint used in the second layer of the two-layer insulated wire of this comparative example is Neoheat AI-34CX used as a base insulating paint instead of the organically treated inorganic mineral dispersed AI-34CX in Example 1-1 above. Using. For the first layer, the same general-purpose insulating paint as in Example 2-1 was used.
(Comparative Example 2-2) <Manufacture of insulated wires>
The insulated wire of Comparative Example 2-2 will be described with reference to FIG.
In the same manner as in Example 2-2, a copper wire having a conductor diameter of 0.2 mm was used as the conductor (1), and a polyesterimide-based paint Neoheat 8600A (concentration 30) manufactured by Tohoku Paint Co., Ltd. was used as a general-purpose insulating paint on the copper wire. %) Is applied with felt and baked to a film thickness of 5 μm, and a polyesterimide insulating film (general purpose insulating film) (3a) is provided. Further, on the outer periphery of the insulating film (3a), Example 1- The insulated wire (20 ') was manufactured by applying and baking Neoheat AI-34CX used as the base insulating paint of No. 1 and providing an insulating film (2').
（比較例３）
（比較例３−１）＜絶縁塗料の調製＞
本比較例の２層構造の絶縁電線の１層目に用いる絶縁塗料として、上記実施例３−１の有機処理無機鉱物分散LITON3300KFの代わりに、ベース絶縁塗料として用いたLITON3300KF（濃度30%）を用いた。なお、２層目には上記実施例３−１と同じ汎用絶縁塗料を用いた。
（比較例３−２）＜絶縁電線の製造＞
比較例３−２の絶縁電線について図３を用いて説明する。
上記実施例３−２と同様にして、導体(1)として、導体径φ0.2mmの銅線を用い、この銅線上に、LITON3300KFをフェルトにより塗布し、皮膜厚が10μmとなるよう焼付して絶縁皮膜（2a'）を設け、更にこの絶縁皮膜（2a'）の外周に、汎用絶縁塗料として実施例３−２と同様のネオヒートAI-34CX(濃度34%)を皮膜厚が5μmとなるよう焼付を行い、ポリアミドイミド絶縁皮膜（汎用絶縁皮膜）（3b）を設けて絶縁電線（30'）を製造した。
(Comparative Example 3)
(Comparative Example 3-1) <Preparation of insulating paint>
LITON3300KF (concentration 30%) used as the base insulating paint instead of the organically treated inorganic mineral dispersed LITON3300KF in Example 3-1 as the insulating paint used in the first layer of the two-layer insulated wire of this comparative example. Using. For the second layer, the same general-purpose insulating paint as in Example 3-1 was used.
(Comparative Example 3-2) <Manufacture of insulated wires>
The insulated wire of Comparative Example 3-2 will be described with reference to FIG.
In the same manner as in Example 3-2 above, a copper wire having a conductor diameter of φ0.2 mm was used as the conductor (1). On this copper wire, LITON3300KF was applied with felt and baked to a film thickness of 10 μm. An insulating film (2a ') is provided, and on the outer periphery of this insulating film (2a'), Neoheat AI-34CX (concentration 34%) similar to Example 3-2 is applied as a general-purpose insulating paint so that the film thickness becomes 5 μm. Baking was performed, and a polyamide-imide insulating film (general-purpose insulating film) (3b) was provided to produce an insulated wire (30 ').
（無機フィラー分散絶縁塗料の長期安定性試験）
上記実施例１−１、３−１の無機フィラー分散絶縁塗料について長期安定性試験を行った。その試験方法としては、それぞれの塗料を300mlの透明なビーカーに密封して1ヶ月保存した後、外観、粘度で比較した。その結果、実施例の各塗料は無機フィラーの凝集、沈降もなく、粘度も変化しておらず長期安定性が良好であった。
(Long-term stability test of inorganic filler dispersed insulating paint)
A long-term stability test was conducted on the inorganic filler-dispersed insulating paints of Examples 1-1 and 3-1 above. As the test method, each paint was sealed in a 300 ml transparent beaker and stored for 1 month, and then compared in appearance and viscosity. As a result, each coating material of the examples had no aggregation and sedimentation of the inorganic filler, had no change in viscosity, and had good long-term stability.
（絶縁電線の評価試験）
上記実施例１−２〜３−２および比較例１−２〜３−２の絶縁電線についてJIS C 3003“エナメル線試験方法”に従い、評価試験を行った。その結果を下記特性比較表１、２に示す。なお表１は実施例、また表２は比較例である。
(Evaluation test of insulated wires)
An evaluation test was conducted on the insulated wires of Examples 1-2 to 3-2 and Comparative Examples 1-2 to 3-2 in accordance with JIS C 3003 “Enameled wire test method”. The results are shown in the following characteristic comparison tables 1 and 2. Table 1 shows examples, and Table 2 shows comparative examples.
上記表１、表２から明らかなように、本発明の絶縁塗料を導体の外周に塗布，焼付した実施例１−２の絶縁電線では、比較例１−２の絶縁電線と比較して耐熱性(耐軟化温度)および絶縁破壊時間（課電寿命）が大幅に向上していることが分かる。また本発明の絶縁塗料を上層または下層に設けた実施例２−２、２−３の絶縁電線も絶縁破壊時間が大幅に向上していることが分かる。 As is clear from Tables 1 and 2 above, the insulated wire of Example 1-2 in which the insulating paint of the present invention was applied and baked on the outer periphery of the conductor was heat resistant compared to the insulated wire of Comparative Example 1-2. It can be seen that (softening temperature) and dielectric breakdown time (electric life) are greatly improved. It can also be seen that the insulation breakdown time of Examples 2-2 and 2-3 in which the insulating paint of the present invention is provided in the upper layer or the lower layer is significantly improved.
本発明の絶縁塗料は凝集、沈降等が全く発生しないうえに、無機フィラーの分散が効率良く行え、ナノオーダーで均一に分散が可能となり、安定性、作業性に優れた絶縁塗料となるので絶縁電線用の塗料として好適となる。
また本発明の絶縁塗料を導体の外周に塗布，焼付した本発明の絶縁電線は、無機フィラー分散絶縁皮膜中の無機フィラーが耐熱性、耐磨耗性を向上させ、部分放電劣化を防止でき課電寿命を向上させることができるのでモータ、トランスなどに使用する絶縁電線の信頼性が向上し、特にインバータ制御される機器に用いられる絶縁電線として好適となり、また電機・電子機器の軽薄短小化にも好適となる。
The insulating paint of the present invention does not cause any aggregation, sedimentation, etc., and the inorganic filler can be dispersed efficiently, and can be uniformly dispersed in the nano order, and the insulating paint has excellent stability and workability. It is suitable as a paint for electric wires.
In addition, the insulated wire of the present invention in which the insulating paint of the present invention is applied and baked on the outer periphery of the conductor can improve the heat resistance and wear resistance by the inorganic filler in the inorganic filler-dispersed insulating film and prevent partial discharge deterioration. Since the service life can be improved, the reliability of insulated wires used in motors, transformers, etc. is improved, making them particularly suitable as insulated wires used in devices controlled by inverters, and for making electrical and electronic equipment lighter, thinner and smaller. Is also suitable.
１ 導体
２，２ａ 無機フィラー分散絶縁皮膜（高アスペクト比有機処理無機鉱物分散絶縁皮膜）
２’ 絶縁皮膜（ポリアミドイミド絶縁皮膜）（ベース絶縁塗料皮膜）
２ａ’ 絶縁皮膜（ポリエステル絶縁皮膜）（ベース絶縁塗料皮膜）
３ａ 汎用絶縁皮膜（ポリエステルイミド絶縁皮膜）
３ｂ 汎用絶縁皮膜（ポリアミドイミド絶縁皮膜）
１０，２０，３０ 本発明の絶縁電線
１０’，２０’，３０’ 比較例の絶縁電線
1 Conductor 2, 2a Inorganic filler dispersed insulating film (High aspect ratio organically treated inorganic mineral dispersed insulating film)
2 'Insulating film (polyamideimide insulating film) (base insulating paint film)
2a 'Insulating film (polyester insulating film) (base insulating paint film)
3a General-purpose insulation film (polyesterimide insulation film)
3b General-purpose insulation film (polyamideimide insulation film)
10, 20, 30 Insulated wire 10 ', 20', 30 'Insulated wire of comparative example
Claims (5)
前記ベース絶縁塗料として、ポリウレタン系、ポリエステル系、ポリエステルイミド系、ポリアミドイミド系、またはポリイミド系の絶縁塗料を用い、また無機フィラーとして、アスペクト比(縦横比)が100〜500と高い層状の無機鉱物の表面を有機材料で表面処理し、分散性に優れた、粒子径0.1〜50μｍ、粒子厚1〜10ｎｍの有機処理無機鉱物を用い、該有機処理無機鉱物をベース絶縁塗料の樹脂分に対して0.5〜5.0wT%添加し、均一に分散させたことを特徴とする無機フィラー分散絶縁塗料。 An inorganic filler dispersed insulating paint in which an inorganic filler (inorganic insulating material) is dispersed in a base insulating paint,
As the base insulating coating, a polyurethane-based, polyester-based, polyesterimide-based, polyamide-imide-based, or polyimide-based insulating coating is used, and the inorganic filler is a layered inorganic mineral having a high aspect ratio (aspect ratio) of 100 to 500. The surface of the surface is treated with an organic material, and an organically treated inorganic mineral having a particle diameter of 0.1 to 50 μm and a particle thickness of 1 to 10 nm is used. An inorganic filler-dispersed insulating paint characterized in that 0.5 to 5.0 wT% is added and dispersed uniformly.
The inorganic filler-dispersed insulating coating according to claim 1 or 2 is applied to the outer periphery of the conductor and baked to form a lower inorganic filler-dispersed insulating coating. An insulated wire provided with a coating and having a two-layer insulation structure.
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| JP2004047857A JP2005239765A (en) | 2004-02-24 | 2004-02-24 | Inorganic filler-dispersed insulating paint and insulated wire |
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| JP2004047857A JP2005239765A (en) | 2004-02-24 | 2004-02-24 | Inorganic filler-dispersed insulating paint and insulated wire |
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| JP2005239765A true JP2005239765A (en) | 2005-09-08 |
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| CN102690596A (en) * | 2011-03-22 | 2012-09-26 | 日立电线株式会社 | Insulating coating material and insulated wire using the same |
| JP2012204270A (en) * | 2011-03-28 | 2012-10-22 | Hitachi Magnet Wire Corp | Insulation electric wire |
| JP2013179375A (en) * | 2013-06-24 | 2013-09-09 | Nissin Electric Co Ltd | Dry capacitor |
| ITBO20120532A1 (en) * | 2012-09-28 | 2014-03-29 | Andrea Cavallini | METHOD OF CONTRASTING A PARTIAL ELECTRIC DISCHARGE ACTIVITY IN AN ELECTRIC INSULATION OF AN ELECTRIC EQUIPMENT. |
| CN103714889A (en) * | 2012-09-29 | 2014-04-09 | 无锡荣诚电工材料有限公司 | Novel multi-core high temperature resistant control cable |
| CN104851480A (en) * | 2014-02-14 | 2015-08-19 | Ls电线有限公司 | Corona-resistant insulating winding wire |
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| CN111978844A (en) * | 2020-09-01 | 2020-11-24 | 安徽晟然绝缘材料有限公司 | High-adhesion direct-welding polyesterimide enameled wire insulating varnish and preparation method thereof |
| CN115746698A (en) * | 2022-11-18 | 2023-03-07 | 江阴市诚信合金材料有限公司 | High-wear-resistance chromium-zirconium-copper alloy wire and preparation method thereof |
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| JP2010524198A (en) * | 2007-04-16 | 2010-07-15 | アルタナ エレクトリカル インシュレイション ゲゼルシャフト ミット ベシュレンクテル ハフツング | Nano-modified wire enamel and their enameled wires |
| US8802231B2 (en) | 2011-03-22 | 2014-08-12 | Hitachi Metals, Ltd. | Insulating coating material and insulated wire using the same |
| CN102690596A (en) * | 2011-03-22 | 2012-09-26 | 日立电线株式会社 | Insulating coating material and insulated wire using the same |
| JP2012197367A (en) * | 2011-03-22 | 2012-10-18 | Hitachi Magnet Wire Corp | Insulating coating material, and insulating electric wire using the same |
| CN102690596B (en) * | 2011-03-22 | 2015-12-16 | 日立金属株式会社 | Insulation compound and use the insulated line of this insulation compound |
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| CN103714889A (en) * | 2012-09-29 | 2014-04-09 | 无锡荣诚电工材料有限公司 | Novel multi-core high temperature resistant control cable |
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| CN104851480A (en) * | 2014-02-14 | 2015-08-19 | Ls电线有限公司 | Corona-resistant insulating winding wire |
| CN109533645A (en) * | 2018-11-23 | 2019-03-29 | 金华市伸华包装材料有限公司 | A kind of high-intensitive not viscous milk capping film and its production technology |
| CN111978844A (en) * | 2020-09-01 | 2020-11-24 | 安徽晟然绝缘材料有限公司 | High-adhesion direct-welding polyesterimide enameled wire insulating varnish and preparation method thereof |
| CN115746698A (en) * | 2022-11-18 | 2023-03-07 | 江阴市诚信合金材料有限公司 | High-wear-resistance chromium-zirconium-copper alloy wire and preparation method thereof |
| CN115746698B (en) * | 2022-11-18 | 2023-09-26 | 江阴市诚信合金材料有限公司 | High-wear-resistance chromium-zirconium-copper alloy wire and preparation method thereof |
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