JP2014167122A - Heat-resistant self-fusing coating and heat-resistant self-fusing enamel wire - Google Patents
Heat-resistant self-fusing coating and heat-resistant self-fusing enamel wire Download PDFInfo
- Publication number
- JP2014167122A JP2014167122A JP2014079098A JP2014079098A JP2014167122A JP 2014167122 A JP2014167122 A JP 2014167122A JP 2014079098 A JP2014079098 A JP 2014079098A JP 2014079098 A JP2014079098 A JP 2014079098A JP 2014167122 A JP2014167122 A JP 2014167122A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- resistant self
- fusing
- bismaleimide
- mass
- 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.)
- Pending
Links
Landscapes
- Paints Or Removers (AREA)
- Organic Insulating Materials (AREA)
- Insulated Conductors (AREA)
Abstract
Description
本発明は、産業用及び自動車用モータ、発電機など耐熱性を要求される電機コイルに好適に使用されるエナメル線の耐熱自己融着性塗料及び耐熱自己融着性エナメル線に関する。 The present invention relates to a heat-resistant self-bonding paint and a heat-resistant self-bonding enameled wire for an enameled wire that are preferably used for industrial and automotive motors, generators, and other electrical coils that require heat resistance.
従来、偏向ヨークに代表される異型コアレスコイルなどの民生機器に使用されるコイルには、含浸ワニスレスによる工数低減などの観点から、導体上に絶縁塗料を塗布・焼付し、その上に融着層を形成した自己融着性エナメル線が一般に使用されている。このようなコイルの製造において、融着層同士を融着させる方法としては、通電、恒温槽及び熱風による熱融着、アルコール、酢酸エチル及びメチルエチルケトン等の低沸点溶剤による溶剤融着などがある。 Conventionally, coils used in consumer equipment such as atypical coreless coils typified by deflection yokes are coated and baked with an insulating coating on the conductor from the viewpoint of reducing man-hours by impregnating varnish, and then a fusion layer Generally, a self-bonding enameled wire formed of is used. In the manufacture of such a coil, methods for fusing the fusion layers together include energization, thermal fusion with a thermostatic bath and hot air, solvent fusion with a low boiling point solvent such as alcohol, ethyl acetate and methyl ethyl ketone.
このような民生機器に用いられる自己融着性エナメル線の融着層は、例えば、ポリビニルブチラール樹脂、共重合ポリアミド樹脂、ポリヒドロキシポリエーテル樹脂（フェノキシ樹脂）などのような軟化温度が比較的に低い熱可塑性樹脂材料を主剤とする融着性塗料で形成される傾向にある。 The fusion layer of the self-bonding enameled wire used in such consumer devices has a relatively softening temperature such as, for example, polyvinyl butyral resin, copolymerized polyamide resin, polyhydroxy polyether resin (phenoxy resin), etc. It tends to be formed of a fusible paint mainly composed of a low thermoplastic resin material.
一方、最近では、産業用及び自動車用モータ、発電機等の高温雰囲気下（２００℃程度の雰囲気）で使用される電気機器のコイルに、自己融着性エナメル線を適用することが要求される傾向にある。このような従来よりも高い耐熱性が要求される電気機器のコイルに使用される自己融着性エナメル線としては、例えば、融着層を形成するための融着性塗料の主剤に、ポリスルホン樹脂、ポリエーテルスルホン樹脂等の高耐熱エンジニアリングプラスチックを用いる検討が行われている。 On the other hand, recently, it is required to apply a self-bonding enameled wire to a coil of an electric device used in a high temperature atmosphere (about 200 ° C. atmosphere) such as industrial and automobile motors and generators. There is a tendency. As a self-bonding enameled wire used for a coil of an electric device that requires higher heat resistance than the conventional one, for example, a polysulfone resin is used as a main component of a bonding paint for forming a bonding layer. Studies using high heat-resistant engineering plastics such as polyethersulfone resins have been conducted.
また、別の方法として、架橋による熱硬化性を融着層に付与した自己融着性エナメル線がある。これは、官能基を持つ樹脂からなる主剤に各種の硬化剤、あるいは架橋剤を添加して融着性塗料を形成し、この融着性塗料を導体上に塗布した後、半硬化させた状態、すなわちＢステージ状態で焼き付けして融着層を形成し自己融着性エナメル線とするものである。この自己融着性エナメル線をコイル状に巻き付けた後、半硬化の状態からなる融着層に熱を加えることで融着層同士が熱融着すると共に熱硬化することで、高温雰囲気下で使用される電気機器のコイルを製造することができる。 Further, as another method, there is a self-bonding enameled wire in which thermosetting by crosslinking is imparted to the bonding layer. This is a state in which various hardeners or cross-linking agents are added to the main agent composed of a resin having a functional group to form a fusible paint, and this fusible paint is applied onto a conductor and then semi-cured. That is, it is baked in a B-stage state to form a fused layer to form a self-bonding enameled wire. After winding this self-bonding enameled wire in a coil shape, heat is applied to the fused layer consisting of a semi-cured state, and the fused layers are thermally fused together and thermally cured. The coil of the electric equipment used can be manufactured.
例えば、特許文献１には、ビスフェノールＡ、ビスフェノールＳ及びビフェニル型エポキシ単位を含むエポキシモノマーを共重合させてなるフェノキシ樹脂、並びに架橋剤を含有する樹脂組成物からなる融着皮膜を有する自己融着性絶縁電線が提案されている。特許文献１によれば、ビスフェノールＡ型エポキシ樹脂、ビスフェノールＳ型エポキシ樹脂及びビフェニル型エポキシ樹脂の混合物と、架橋剤とを含有する熱硬化型融着樹脂組成物を用いて融着皮膜を形成することにより、耐摩耗性等の機械的強度や耐熱性に優れた融着皮膜が得られるとされている。 For example, Patent Document 1 discloses a self-fusion having a fusion film comprising a phenoxy resin obtained by copolymerizing an epoxy monomer containing bisphenol A, bisphenol S and a biphenyl type epoxy unit, and a resin composition containing a crosslinking agent. Insulated wires have been proposed. According to Patent Document 1, a fusion coating is formed using a thermosetting fusion resin composition containing a mixture of a bisphenol A type epoxy resin, a bisphenol S type epoxy resin and a biphenyl type epoxy resin, and a crosslinking agent. Thus, it is said that a fusion coating excellent in mechanical strength such as wear resistance and heat resistance can be obtained.
高温雰囲気下で使用される電気機器のコイルに自己融着性エナメル線を使用する場合において、高耐熱エンジニアリングプラスチックなどの高い軟化温度を有する樹脂を融着性塗料の主剤に使用する手法では、このような融着性塗料からなる融着層同士を融着させる際に、高温（例えば、２６０℃以上）の熱をかけなければ所定の融着力を発現しないという欠点を有している。すなわち、融着層同士を融着させる融着工程の温度が非常に高くなるために、自己融着性エナメル線の絶縁層（融着層の下層）及び自己融着性エナメル線以外の絶縁材料の劣化を招くことや、融着工程自体の作業性を低下させることなどの問題が懸念される。 When using a self-bonding enameled wire for the coil of electrical equipment used in a high-temperature atmosphere, this method is used in the case of using a resin having a high softening temperature, such as a high heat-resistant engineering plastic, as the main component of the bonding paint. When fusing the fusing layers made of such a fusing paint, there is a disadvantage that a predetermined fusing force is not exhibited unless heat at a high temperature (for example, 260 ° C. or higher) is applied. That is, since the temperature of the fusing process for fusing the fusing layers to each other becomes very high, the insulating layer of the self-fusing enameled wire (the lower layer of the fusing layer) and the insulating material other than the self-fusing enameled wire There are concerns about problems such as incurring deterioration of the material and reducing the workability of the fusing process itself.
また、架橋による熱硬化性を融着層に付与する従来の手法に関しては、焼き付け時の熱によって硬化反応が進行してしまい、融着工程における硬化反応が不十分となるために、所望の熱融着力を融着工程において発現しないことや、高温雰囲気で使用される際に熱融着力（接着力）が大幅に低下してコイルの変形、線のほつれを生ずること等の問題が懸念される。 In addition, regarding the conventional method of imparting thermosetting property by crosslinking to the fusion layer, the curing reaction proceeds due to the heat at the time of baking, and the curing reaction in the fusion process becomes insufficient. There are concerns about problems such as the fact that the fusing force is not expressed in the fusing process and that the heat fusing force (adhesive force) is greatly reduced when used in a high temperature atmosphere, resulting in coil deformation and wire fraying. .
そこで、本発明は、上記問題を解決し、融着工程において良好な熱融着力を発現すると共に、高温雰囲気下での使用においても実用上問題の無い熱融着力を有する耐熱自己融着性塗料及び耐熱自己融着性エナメル線を提供することを目的とする。 Accordingly, the present invention solves the above-mentioned problems, exhibits a good heat-fusible force in the fusing process, and has a heat-fusing force having a heat-fusing force that has no practical problem even when used in a high-temperature atmosphere. And a heat-resistant self-bonding enameled wire.
上記目的を達成するための本発明は、以下の［１］〜［６］に示される耐熱自己融着性塗料及び耐熱自己融着性エナメル線である。 The present invention for achieving the above object is a heat-resistant self-bonding paint and a heat-resistant self-bonding enameled wire shown in the following [1] to [6].
［１］５０〜７０モル％のビスフェノールＡ型エポキシ単位と３０〜５０モル％のビスフェノールＳ型エポキシ単位とを共重合させて得られる化学式（１）に示すスルホン基含有ポリヒドロキシポリエーテル樹脂１００質量部に対して、ビスマレイミド類を１０〜１００質量部含有することを特徴とする、耐熱自己融着性塗料。 [1] 100 mass of sulfone group-containing polyhydroxy polyether resin represented by chemical formula (1) obtained by copolymerizing 50 to 70 mol% of bisphenol A type epoxy unit and 30 to 50 mol% of bisphenol S type epoxy unit 10 to 100 parts by mass of bismaleimides with respect to parts, a heat-resistant self-fusing paint.
［２］前記ビスマレイミド類が、４，４'−ジフェニルメタンビスマレイミド、ｍ−フェニレンビスマレイミド、ビスフェノールＡジフェニルエーテルビスマレイミド、３，３'−ジメチル−５，５'ジエチル−４，４'−ジフェニルメタンビスマレイミド、４，４'−ジフェニルエーテルビスマレイミド、４，４'−ジフェニルスルホンビスマレイミド、１，３−ビス（３−マレイミドフェノキシ）ベンゼン、１，３−ビス（４−マレイミドフェノキシ）ベンゼン、１，６'−ビスマレイミド−（２，２，４−トリメチル）ヘキサン及びポリフェニルメタンマレイミドのうちから選ばれる少なくとも１種以上のビスマレイミドである、前記［１］に記載の耐熱自己融着性塗料。 [2] The bismaleimides are 4,4′-diphenylmethane bismaleimide, m-phenylene bismaleimide, bisphenol A diphenyl ether bismaleimide, 3,3′-dimethyl-5,5′diethyl-4,4′-diphenylmethanebis. Maleimide, 4,4′-diphenyl ether bismaleimide, 4,4′-diphenylsulfone bismaleimide, 1,3-bis (3-maleimidophenoxy) benzene, 1,3-bis (4-maleimidophenoxy) benzene, 1,6 The heat-resistant self-fusing paint according to the above [1], which is at least one bismaleimide selected from '-bismaleimide- (2,2,4-trimethyl) hexane and polyphenylmethane maleimide.
［３］前記スルホン基含有ポリヒドロキシポリエーテル樹脂１００質量部に対して、更に滑剤を１〜１０質量部の割合で含有する、前記［１］又は［２］に記載の耐熱自己融着性塗料。 [3] The heat-resistant self-fusing paint according to [1] or [2], further containing a lubricant in a ratio of 1 to 10 parts by mass with respect to 100 parts by mass of the sulfone group-containing polyhydroxy polyether resin. .
［４］前記滑剤が、ポリエチレンワックス、シリコーン樹脂及びフッ素樹脂からなる合成系滑剤、蜜蝋、カルナウバ蝋及びキャンデリラワックスからなる天然系滑剤のうちから選ばれる少なくとも１種以上の滑剤である、前記［３］に記載の耐熱自己融着性塗料。 [4] The lubricant is at least one lubricant selected from a synthetic lubricant composed of polyethylene wax, silicone resin and fluororesin, and a natural lubricant composed of beeswax, carnauba wax and candelilla wax. 3] The heat-resistant self-adhesive coating material according to item 3.
［５］更に、飽和脂環式ケトン類、フェノール類及びグリコールエーテル類のうちから選ばれる少なくとも１種以上の有機溶剤を含有する、前記［１］から［４］の何れか一つに記載の耐熱自己融着性塗料。 [5] The method according to any one of [1] to [4], further including at least one organic solvent selected from saturated alicyclic ketones, phenols, and glycol ethers. Heat-resistant self-bonding paint.
［６］導体上に直接又は他の絶縁物を介して、前記［１］から［５］の何れか一つに記載の耐熱自己融着性塗料を塗布し、焼き付けして形成された融着層を有することを特徴とする、耐熱自己融着性エナメル線。 [6] Fusion formed by applying and baking the heat-resistant self-bonding paint according to any one of [1] to [5] directly on the conductor or through another insulator. A heat-resistant self-bonding enameled wire characterized by having a layer.
本発明によれば、融着工程において良好な熱融着力を発現すると共に、高温雰囲気下での使用においても実用上問題の無い熱融着力を有する耐熱自己融着性エナメル線及びそれに用いられる耐熱自己融着性塗料を提供することができる。 According to the present invention, a heat-resistant self-bonding enameled wire that exhibits good heat-fusibility in the fusing process and has no heat-fusing force even when used in a high-temperature atmosphere, and the heat-resistance used therein A self-bonding paint can be provided.
以下、本発明の好適な実施形態を説明する。 Hereinafter, preferred embodiments of the present invention will be described.
本発明の好適な第１の実施形態に係る耐熱自己融着性塗料は、ビスフェノールＡ型エポキシ単位とビスフェノールＳ型エポキシ単位とを共重合させて得られる化学式（１）に示すスルホン基含有ポリヒドロキシポリエーテル樹脂と後述するビスマレイミド類とを含有するものである。 The heat-resistant self-fusing paint according to the preferred first embodiment of the present invention is a sulfone group-containing polyhydroxy compound represented by the chemical formula (1) obtained by copolymerizing a bisphenol A type epoxy unit and a bisphenol S type epoxy unit. It contains a polyether resin and bismaleimides described later.
本発明におけるスルホン基含有ポリヒドロキシポリエーテル樹脂は、工業的に実用化されているものならば特に限定されないが、市販のスルホン基含有ポリヒドロキシポリエーテル樹脂（製品群：ＹＰＳ、新日鐵化学社）等を例示することができる。中でも融着工程における熱融着性と高温雰囲気下での使用においても実用上問題の無い熱融着力とのバランスから、樹脂骨格中のビスフェノールＡ型エポキシ単位の割合が５０〜７０モル％、ビスフェノールＳ型エポキシ単位の割合が３０〜５０モル％であるスルホン基含有ポリヒドロキシポリエーテル樹脂が好ましく、特に樹脂骨格中のビスフェノールＡ型エポキシ単位の割合が６０モル％、ビスフェノールＳ型エポキシ単位の割合が４０モル％であるスルホン基含有ポリヒドロキシポリエーテル樹脂（製品名：ＹＰＳ−００７Ａ、新日鐵化学社）が好ましい。 The sulfone group-containing polyhydroxy polyether resin in the present invention is not particularly limited as long as it is industrially used, but a commercially available sulfone group-containing polyhydroxy polyether resin (product group: YPS, Nippon Steel Chemical Co., Ltd.) ) And the like. In particular, the ratio of bisphenol A-type epoxy units in the resin skeleton is 50 to 70 mol%, bisphenol because of the balance between the heat-fusibility in the fusing process and the heat-fusing force that has no practical problem even when used in a high-temperature atmosphere. A sulfone group-containing polyhydroxy polyether resin in which the proportion of S-type epoxy units is 30 to 50 mol% is preferred, and in particular, the proportion of bisphenol A-type epoxy units in the resin skeleton is 60 mol%, and the proportion of bisphenol S-type epoxy units is A sulfo group-containing polyhydroxy polyether resin (product name: YPS-007A, Nippon Steel Chemical Co., Ltd.) of 40 mol% is preferred.
本発明におけるビスマレイミド類としては、４，４'−ジフェニルメタンビスマレイミド、ｍ−フェニレンビスマレイミド、ビスフェノールＡジフェニルエーテルビスマレイミド、３，３'−ジメチル−５，５'ジエチル−４，４'−ジフェニルメタンビスマレイミド、４，４'−ジフェニルエーテルビスマレイミド、４，４'−ジフェニルスルホンビスマレイミド、１，３−ビス（３−マレイミドフェノキシ）ベンゼン、１，３−ビス（４−マレイミドフェノキシ）ベンゼン、１，６'−ビスマレイミド−（２，２，４−トリメチル）ヘキサン、ポリフェニルメタンマレイミドなどがあり、これらを一種以上使用することができる。これらの中で材料の入手性及びスルホン基含有ポリヒドロキシポリエーテル樹脂との適度な反応性から４，４'−ジフェニルメタンビスマレイミド及びｍ−フェニレンビスマレイミドが好ましく、４，４'−ジフェニルメタンビスマレイミドが好適である。 As bismaleimides in the present invention, 4,4′-diphenylmethane bismaleimide, m-phenylene bismaleimide, bisphenol A diphenyl ether bismaleimide, 3,3′-dimethyl-5,5′diethyl-4,4′-diphenylmethanebis Maleimide, 4,4′-diphenyl ether bismaleimide, 4,4′-diphenylsulfone bismaleimide, 1,3-bis (3-maleimidophenoxy) benzene, 1,3-bis (4-maleimidophenoxy) benzene, 1,6 There are '-bismaleimide- (2,2,4-trimethyl) hexane, polyphenylmethane maleimide and the like, and one or more of them can be used. Among these, 4,4′-diphenylmethane bismaleimide and m-phenylene bismaleimide are preferable, and 4,4′-diphenylmethane bismaleimide is preferable because of availability of materials and appropriate reactivity with the sulfone group-containing polyhydroxypolyether resin. Is preferred.
前記ビスマレイミド類の含有量は、前記スルホン基含有ポリヒドロキシポリエーテル樹脂１００質量部に対して１０〜１００質量部が好ましく、更に１０〜５０質量部が好ましい。１０質量部未満では、融着工程におけるスルホン基含有ポリヒドロキシポリエーテル樹脂とビスマレイミド類との反応が不十分となって２００℃程度の高温雰囲気下での接着力が低下するおそれがある。一方、１００質量部を超えると、前記反応によって融着層が硬く脆くなることや、耐熱自己融着性塗料中にビスマレイミド類が析出することで、融着層同士の熱融着力が低下するなどの問題が生じるおそれがある。 The content of the bismaleimides is preferably 10 to 100 parts by mass, more preferably 10 to 50 parts by mass with respect to 100 parts by mass of the sulfone group-containing polyhydroxypolyether resin. If it is less than 10 parts by mass, the reaction between the sulfone group-containing polyhydroxypolyether resin and the bismaleimide in the fusing step becomes insufficient, and the adhesive strength in a high temperature atmosphere of about 200 ° C. may be reduced. On the other hand, when the amount exceeds 100 parts by mass, the fusion layer becomes hard and brittle due to the reaction, and bismaleimides are precipitated in the heat-resistant self-fusing paint, so that the thermal fusion force between the fusion layers decreases. May cause problems.
第１の実施形態に係る耐熱自己融着性塗料の有機溶剤としては、前記スルホン基含有ポリヒドロキシポリエーテル樹脂及び前記ビスマレイミド類を溶解できる有機溶剤ならよく、シクロヘキサノンなどの飽和脂環式ケトン類、クレゾールなどのフェノール類、メチルカルビトールなどのグリコールエーテル類から選ばれる少なくとも１種以上からなるものを使用できるが、焼き付け後の融着層の残留溶剤及び臭気対策からシクロヘキサノンが好ましい。また、キシレン、高沸点アルキルベンゼンなどで適宜希釈することができる。 The organic solvent of the heat-resistant self-fusing paint according to the first embodiment may be any organic solvent that can dissolve the sulfone group-containing polyhydroxy polyether resin and the bismaleimide, and may be a saturated alicyclic ketone such as cyclohexanone. At least one selected from phenols such as cresol and glycol ethers such as methyl carbitol can be used, but cyclohexanone is preferred from the standpoint of residual solvent and odor in the fused layer after baking. Further, it can be appropriately diluted with xylene, high boiling point alkylbenzene or the like.
第１の実施形態に係る耐熱自己融着性塗料は、上述した有機溶剤に、前記スルホン基含有ポリヒドロキシポリエーテル樹脂と前記ビスマレイミド類とを溶解して得ることができる。 The heat-resistant self-fusing paint according to the first embodiment can be obtained by dissolving the sulfone group-containing polyhydroxy polyether resin and the bismaleimide in the organic solvent described above.
次に、第１の実施形態に係る耐熱自己融着性塗料を使用した耐熱自己融着性エナメル線の一例を図１を用いて説明する。 Next, an example of the heat-resistant self-bonding enameled wire using the heat-resistant self-bonding paint according to the first embodiment will be described with reference to FIG.
図１に示すように、第１の実施形態に係る耐熱自己融着性エナメル線１０は、導体１上に、他の絶縁物としての絶縁層（例えば、ポリアミドイミドからなる）２を設け、その絶縁層２上に、上述した耐熱自己融着性塗料を塗布し、焼き付けて融着層（融着皮膜）３を形成することにより、得られる。 As shown in FIG. 1, the heat-resistant self-bonding enameled wire 10 according to the first embodiment is provided with an insulating layer (for example, made of polyamideimide) 2 as another insulator on the conductor 1, It is obtained by applying the above-mentioned heat-resistant self-bonding paint on the insulating layer 2 and baking it to form a bonding layer (fusion film) 3.
第１の実施形態の作用を説明する。 The operation of the first embodiment will be described.
第１の実施形態に係る耐熱自己融着性塗料は、化学式（１）に示すスルホン基含有ポリヒドロキシポリエーテル樹脂とビスマレイミド類とを含有してなる。 The heat-resistant self-fusing paint according to the first embodiment comprises a sulfone group-containing polyhydroxy polyether resin represented by chemical formula (1) and bismaleimides.
このため、第１の実施形態に係る耐熱自己融着性塗料を塗布、焼き付けして耐熱自己融着性エナメル線１０の融着層３として用いると、焼き付け時に有機溶剤がほぼ揮散し、焼き付け時の熱によって、前記スルホン基含有ポリヒドロキシポリエーテル樹脂と前記ビスマレイミド類との硬化反応が完全には進行せずにＢステージ状態で絶縁層２上に焼き付けされて耐熱自己融着性エナメル線１０が得られる。そして、このような融着層３を有する耐熱自己融着性エナメル線１０をコイルに使用する場合において、通電、恒温槽、熱風による加熱によって融着層３同士を融着する際、２００℃以上２４０℃以下程度の温度範囲で加熱することにより、更に熱硬化反応が生じて融着層３が架橋構造になると共に、融着層３同士が熱融着する。 For this reason, when the heat-resistant self-bonding paint according to the first embodiment is applied and baked to be used as the bonding layer 3 of the heat-resistant self-bonding enameled wire 10, the organic solvent is almost volatilized at the time of baking. With this heat, the curing reaction between the sulfone group-containing polyhydroxy polyether resin and the bismaleimides does not proceed completely, but is baked on the insulating layer 2 in the B-stage state and heat resistant self-bonding enameled wire 10 Is obtained. When the heat-resistant self-bonding enameled wire 10 having such a fusion layer 3 is used for a coil, when the fusion layers 3 are fused to each other by energization, a thermostatic bath, or heating with hot air, 200 ° C. or higher. By heating in a temperature range of about 240 ° C. or less, a thermosetting reaction further occurs, the fusion layer 3 becomes a crosslinked structure, and the fusion layers 3 are thermally fused.
これにより、第１の実施形態に係る耐熱自己融着性塗料によれば、２００℃以上２４０℃以下程度の温度範囲での加熱によって隣接するエナメル線同士（融着層同士）が良好な熱融着力（例えば、１００Ｎ以上）を発現すると共に、２００℃程度の高温雰囲気下において、実用上問題の無い融着力（例えば、１０Ｎ以上）を保持することができる。なお、この耐熱自己融着性エナメル線１０は、産業用及び自動車用モータ、発電機など耐熱性を要求される電機コイルとしての巻線に使用できる。 Thereby, according to the heat-resistant self-fusing paint according to the first embodiment, the adjacent enamel wires (fusing layers) are excellently fused by heating in a temperature range of about 200 ° C. to 240 ° C. Adhesive force (for example, 100 N or more) can be exhibited, and a fusion force (for example, 10 N or more) having no practical problem can be maintained in a high temperature atmosphere of about 200 ° C. The heat-resistant self-bonding enameled wire 10 can be used for winding as an electric coil that requires heat resistance such as industrial and automobile motors and generators.
また、第１の実施形態に係る耐熱自己融着性塗料では、融着工程で融着層同士を融着する際に、ポリスルホン樹脂等を主剤とした自己融着性塗料からなる融着層の融着温度（２６０℃以上）と比べて低い融着温度（２００℃〜２４０℃程度）で十分な熱融着力を発現することができるため、耐熱自己融着性エナメル線１０の絶縁層２や、エナメル線以外の絶縁材料の劣化を防止でき、融着工程自体の作業性も向上する。 Further, in the heat-resistant self-fusing paint according to the first embodiment, when fusing the fusing layers in the fusing process, the fusing layer made of a self-fusing paint mainly composed of polysulfone resin or the like is used. Since sufficient heat fusion force can be exhibited at a low fusion temperature (about 200 ° C. to 240 ° C.) compared to the fusion temperature (260 ° C. or higher), the insulating layer 2 of the heat resistant self-fusing enameled wire 10 or In addition, the deterioration of the insulating material other than the enameled wire can be prevented, and the workability of the fusion process itself is improved.
更に、第１の実施形態に係る耐熱自己融着性塗料は、耐熱自己融着性エナメル線１０自体の融着温度の変化に対する熱融着力のバラツキが小さく、高信頼性である。その他、官能基同士が常温において徐々に反応してしまい、経日変化により熱融着力が大きく低下すること等の問題も無い。 Furthermore, the heat-resistant self-bonding paint according to the first embodiment is highly reliable with little variation in the heat-bonding force with respect to changes in the bonding temperature of the heat-resistant self-bonding enameled wire 10 itself. In addition, there is no problem that the functional groups gradually react at normal temperature, and the heat-sealing power is greatly reduced due to changes over time.
次に、第２の実施形態を説明する。 Next, a second embodiment will be described.
第２の実施形態に係る耐熱自己融着性塗料は、第１の実施形態に係る耐熱自己融着性塗料の構成に加え、更に前記スルホン基含有ポリヒドロキシポリエーテル樹脂１００質量部に対して、滑剤を１〜１０質量部含有する。 In addition to the configuration of the heat-resistant self-fusing paint according to the first embodiment, the heat-resistant self-fusing paint according to the second embodiment is further based on 100 parts by mass of the sulfone group-containing polyhydroxy polyether resin. Contains 1-10 parts by weight of lubricant.
前記滑剤は、特に限定されるものではないが、ポリエチレンワックス、シリコーン樹脂及びフッ素樹脂などの合成系滑剤、蜜蝋、カルナウバ蝋及びキャンデリラワックスなどの天然系滑剤があり、これらを一種以上使用することができる。これらの中で入手のしやすさや前記耐熱自己融着性塗料への溶解性及び前記耐熱自己融着性塗料を塗布、焼き付けして得られる耐熱自己融着性エナメル線のすべり性が良好で蜜蝋の使用が好ましい。 The lubricant is not particularly limited, and there are synthetic lubricants such as polyethylene wax, silicone resin and fluororesin, and natural lubricants such as beeswax, carnauba wax and candelilla wax, and one or more of these should be used. Can do. Among these, the beeswax is easy to obtain, has good solubility in the heat-resistant self-fusing paint, and has good sliding properties of the heat-resistant self-fusing enameled wire obtained by applying and baking the heat-resistant self-fusing paint. Is preferred.
第２の実施形態に係る耐熱自己融着性塗料を用いて、図１の耐熱自己融着性エナメル線１０と同様のエナメル線を作製すれば、滑剤により融着層にすべり性を付与した耐熱自己融着性エナメル線が得られる。 If the enameled wire similar to the heat-resistant self-bonding enameled wire 10 in FIG. 1 is produced using the heat-resistant self-bonding coating material according to the second embodiment, the heat-resistant property that imparts the slipping property to the fusion layer by the lubricant. A self-bonding enameled wire is obtained.
前記滑剤の添加量は、前記スルホン基含有ポリヒドロキシポリエーテル樹脂１００質量部に対して、１〜１０質量部が好ましく、更に１〜５質量部が好適である。１質量部未満では所望の値（静摩擦係数が０．１０以下）に達しない場合があり、１０質量部を超えると、すべり性の向上の効果は得られるものの、塗料中で滑剤の一部が析出するなど、滑剤の分散が大幅に悪化してしまうためである。 The addition amount of the lubricant is preferably 1 to 10 parts by mass, and more preferably 1 to 5 parts by mass with respect to 100 parts by mass of the sulfone group-containing polyhydroxy polyether resin. If it is less than 1 part by mass, it may not reach the desired value (the coefficient of static friction is 0.10 or less). If it exceeds 10 parts by mass, an effect of improving the slipping property can be obtained, but a part of the lubricant in the paint can be obtained. This is because the dispersion of the lubricant is greatly deteriorated such as precipitation.
前記第１の実施形態及び前記第２の実施形態では、導体１上に絶縁層２を介して融着層３を設けた２層構造の耐熱自己融着性エナメル線１０を説明したが、前記各実施形態に係る耐熱自己融着性塗料は、導体上に直接融着層を設けた１層構造の耐熱自己融着性エナメル線にも適用できる。また、前記実施形態に係る耐熱自己融着性エナメル線において、導体としては、長手方向から見た断面が丸形状、矩形状（平角形状）の銅線（無酸素銅線や低酸素銅線）などを用いることができる。 In the first embodiment and the second embodiment, the heat-resistant self-bonding enameled wire 10 having a two-layer structure in which the bonding layer 3 is provided on the conductor 1 via the insulating layer 2 has been described. The heat-resistant self-bonding paint according to each embodiment can be applied to a heat-resistant self-bonding enameled wire having a one-layer structure in which a bonding layer is directly provided on a conductor. Moreover, in the heat-resistant self-bonding enameled wire according to the embodiment, as a conductor, a copper wire (an oxygen-free copper wire or a low-oxygen copper wire) having a round shape and a rectangular shape (flat rectangular shape) as viewed from the longitudinal direction is used as a conductor. Etc. can be used.
次に、本発明に係る耐熱自己融着性エナメル線の実施例を比較例と共に説明する。 Next, examples of the heat-resistant self-bonding enameled wire according to the present invention will be described together with comparative examples.
（ポリアミドイミドエナメル線の作製）
図１に示すように、断面が円形状の銅線からなる外径０．８ｍｍの導体１上にポリアミドイミド塗料を塗布、焼き付けすることにより厚さ０．０３０ｍｍの絶縁層２を有するポリアミドイミドエナメル線を得た。
(Production of polyamide-imide enamel wire)
As shown in FIG. 1, a polyamide-imide enamel having an insulating layer 2 having a thickness of 0.030 mm by applying and baking a polyamide-imide paint on a conductor 1 made of copper wire having a circular cross section and having an outer diameter of 0.8 mm Got a line.
（実施例１）
ビスフェノールＡ型エポキシ単位の割合が６０モル％、ビスフェノールＳ型エポキシ単位の割合が４０モル％であるスルホン基含有ポリヒドロキシポリエーテル樹脂（新日鐵化学社、ＹＰＳ−００７Ａ）１００質量部と、４，４'−ジフェニルメタンビスマレイミド（大和化成工業社、ＢＭＩ−１０００）１０質量部とを、シクロヘキサノン及び高沸点アルキルベンゼンからなる混合溶剤に溶解することにより樹脂分濃度２５％の耐熱自己融着性塗料を調製した。次に、上記ポリアミドイミドエナメル線の上に、得られた耐熱自己融着性塗料を塗布、焼き付けすることにより、厚さ０．０１０ｍｍの融着層３を有する図１の耐熱自己融着性エナメル線を得た。
Example 1
100 parts by mass of a sulfo group-containing polyhydroxy polyether resin (Nippon Steel Chemical Co., Ltd., YPS-007A) having a bisphenol A type epoxy unit ratio of 60 mol% and a bisphenol S type epoxy unit ratio of 40 mol%; , 4′-diphenylmethane bismaleimide (Daiwa Kasei Kogyo Co., Ltd., BMI-1000) in a mixed solvent composed of cyclohexanone and high-boiling alkylbenzene to dissolve the heat-resistant self-fusing paint having a resin concentration of 25%. Prepared. Next, the heat-resistant self-bonding enamel of FIG. 1 having the 0.03 mm-thick bonding layer 3 is obtained by applying and baking the obtained heat-resistant self-bonding paint on the polyamideimide enamel wire. Got a line.
（実施例２）
４，４'−ジフェニルメタンビスマレイミド（大和化成工業社、ＢＭＩ−１０００）を３０質量部とした以外は実施例１と同様の手法により耐熱自己融着性エナメル線を得た。
(Example 2)
A heat-resistant self-bonding enameled wire was obtained in the same manner as in Example 1 except that 4,4′-diphenylmethane bismaleimide (Daiwa Kasei Kogyo Co., Ltd., BMI-1000) was changed to 30 parts by mass.
（実施例３）
４，４'−ジフェニルメタンビスマレイミド（大和化成工業社、ＢＭＩ−１０００）を５０質量部とした以外は実施例１と同様の手法により耐熱自己融着性エナメル線を得た。
(Example 3)
A heat-resistant self-bonding enameled wire was obtained in the same manner as in Example 1 except that 4,4′-diphenylmethane bismaleimide (Daiwa Kasei Kogyo Co., Ltd., BMI-1000) was changed to 50 parts by mass.
（実施例４）
４，４'−ジフェニルメタンビスマレイミド（大和化成工業社、ＢＭＩ−１０００）を７５質量部とした以外は実施例１と同様の手法により耐熱自己融着性エナメル線を得た。
Example 4
A heat-resistant self-bonding enameled wire was obtained in the same manner as in Example 1 except that 4,4′-diphenylmethane bismaleimide (Daiwa Kasei Kogyo Co., Ltd., BMI-1000) was changed to 75 parts by mass.
（実施例５）
４，４'−ジフェニルメタンビスマレイミド（大和化成工業社、ＢＭＩ−１０００）を１００質量部とした以外は実施例１と同様の手法により耐熱自己融着性エナメル線を得た。
(Example 5)
A heat-resistant self-bonding enameled wire was obtained in the same manner as in Example 1 except that 4,4′-diphenylmethane bismaleimide (Daiwa Kasei Kogyo Co., Ltd., BMI-1000) was 100 parts by mass.
（実施例６）
４，４'−ジフェニルメタンビスマレイミド（大和化成工業社、ＢＭＩ−１０００）に代わりｍ−フェニレンビスマレイミド（大和化成工業社、ＢＭＩ−３０００）３０質量部を用いた以外は実施例１と同様の手法により耐熱自己融着性エナメル線を得た。
(Example 6)
The same procedure as in Example 1 except that 30 parts by mass of m-phenylene bismaleimide (Daiwa Kasei Kogyo Co., Ltd., BMI-3000) was used instead of 4,4′-diphenylmethane bismaleimide (Daiwa Kasei Kogyo Co., BMI-1000). Thus, a heat-resistant self-bonding enameled wire was obtained.
（実施例７）
ビスフェノールＡ型エポキシ単位の割合が６０モル％、ビスフェノールＳ型エポキシ単位の割合が４０モル％であるスルホン基含有ポリヒドロキシポリエーテル樹脂（新日鐵化学社、ＹＰＳ−００７Ａ）１００質量部と、４，４'−ジフェニルメタンビスマレイミド（大和化成工業社、ＢＭＩ−１０００）３０質量部とを、シクロヘキサノン及び高沸点アルキルベンゼンからなる混合溶剤に溶解し、更に蜜蝋１質量部を含有し溶解することにより樹脂分濃度２５％の耐熱自己融着性塗料を調製した。次に、上記のポリアミドイミドエナメル線の上に、得られた耐熱自己融着性塗料を塗布、焼き付けすることにより厚さ０．０１０ｍｍの融着層３を有する図１の耐熱自己融着性エナメル線を得た。
(Example 7)
100 parts by mass of a sulfo group-containing polyhydroxy polyether resin (Nippon Steel Chemical Co., Ltd., YPS-007A) having a bisphenol A type epoxy unit ratio of 60 mol% and a bisphenol S type epoxy unit ratio of 40 mol%; , 4′-diphenylmethane bismaleimide (Daiwa Kasei Kogyo Co., Ltd., BMI-1000) is dissolved in a mixed solvent composed of cyclohexanone and high-boiling alkylbenzene, and further contains 1 part by weight of beeswax to dissolve the resin component. A heat-resistant self-fusing paint having a concentration of 25% was prepared. Next, the heat-resistant self-bonding enamel of FIG. 1 having the 0.03 mm-thick bonding layer 3 by applying and baking the obtained heat-resistant self-bonding paint on the above polyamideimide enamel wire. Got a line.
（実施例８）
蜜蝋の添加量を２．５質量部とした以外は実施例７と同様の手法により耐熱自己融着性エナメル線を得た。
(Example 8)
A heat-resistant self-bonding enameled wire was obtained in the same manner as in Example 7 except that the amount of beeswax added was 2.5 parts by mass.
（実施例９）
蜜蝋の添加量を５．０質量部とした以外は実施例７と同様の手法により耐熱自己融着性エナメル線を得た。
Example 9
A heat-resistant self-bonding enameled wire was obtained in the same manner as in Example 7 except that the amount of beeswax added was 5.0 parts by mass.
（実施例１０）
蜜蝋の添加量を１０．０質量部とした以外は、実施例７と同様の手法により耐熱自己融着性エナメル線を得た。
(Example 10)
A heat-resistant self-bonding enameled wire was obtained in the same manner as in Example 7 except that the amount of beeswax added was 10.0 parts by mass.
（比較例１）
ビスフェノールＡ型エポキシ単位の割合が６０モル％、ビスフェノールＳ型エポキシ単位の割合が４０モル％であるスルホン基含有ポリヒドロキシポリエーテル樹脂（新日鐵化学社、ＹＰＳ−００７Ａ）を、シクロヘキサノン及び高沸点アルキルベンゼンからなる混合溶剤に溶解することにより樹脂分濃度２５％の耐熱自己融着性塗料を調製した。上記のポリアミドイミドエナメル線の上に、得られた耐熱自己融着性塗料を塗布、焼き付けすることにより厚さ０．０１０ｍｍの融着層を有する耐熱自己融着性エナメル線を得た。
(Comparative Example 1)
A sulfone group-containing polyhydroxy polyether resin (Nippon Steel Chemical Co., Ltd., YPS-007A) having a proportion of bisphenol A type epoxy units of 60 mol% and a proportion of bisphenol S type epoxy units of 40 mol%, cyclohexanone and high boiling point A heat-resistant self-fusing paint having a resin concentration of 25% was prepared by dissolving in a mixed solvent composed of alkylbenzene. A heat-resistant self-bonding enameled wire having a 0.010 mm-thick fused layer was obtained by applying and baking the obtained heat-resistant self-bonding coating on the polyamideimide enameled wire.
（比較例２）
４，４'−ジフェニルメタンビスマレイミド（大和化成工業社、ＢＭＩ−１０００）を７．５質量部とした以外は実施例１と同様の手法により耐熱自己融着性エナメル線を得た。
(Comparative Example 2)
A heat-resistant self-bonding enameled wire was obtained in the same manner as in Example 1 except that 4,4′-diphenylmethane bismaleimide (Daiwa Kasei Kogyo Co., Ltd., BMI-1000) was 7.5 parts by mass.
（比較例３）
４，４'−ジフェニルメタンビスマレイミド（大和化成工業社、ＢＭＩ−１０００）を１１０質量部とした以外は実施例１と同様の手法により耐熱自己融着性エナメル線を得た。
(Comparative Example 3)
A heat-resistant self-bonding enameled wire was obtained in the same manner as in Example 1 except that 4,4′-diphenylmethane bismaleimide (Daiwa Kasei Kogyo Co., Ltd., BMI-1000) was changed to 110 parts by mass.
（比較例４）
４，４'−ジフェニルメタンビスマレイミド（大和化成工業社、ＢＭＩ−１０００）の代わりにレゾール型フェノール樹脂（日立化成工業社、Ｈ−２１８１）を１５質量部用いたこと以外は実施例１と同様の手法により耐熱自己融着性エナメル線を得た。
(Comparative Example 4)
The same as Example 1 except that 15 parts by mass of a resol type phenol resin (Hitachi Kasei Kogyo Co., Ltd., H-2181) was used instead of 4,4′-diphenylmethane bismaleimide (Daiwa Kasei Kogyo Co., Ltd., BMI-1000). A heat-resistant self-bonding enameled wire was obtained by the method.
（比較例５）
４，４'−ジフェニルメタンビスマレイミド（大和化成工業社、ＢＭＩ−１０００）の代わりに安定化イソシアネート（日本ポリウレタン工業社、ＡＰ−ＳＴＡＢＬＥ）を５質量部用いたこと以外は実施例１と同様の手法により耐熱自己融着性エナメル線を得た。
(Comparative Example 5)
The same procedure as in Example 1 except that 5 parts by mass of stabilized isocyanate (Nippon Polyurethane Industry Co., Ltd., AP-STABLE) was used in place of 4,4′-diphenylmethane bismaleimide (Daiwa Kasei Kogyo Co., Ltd., BMI-1000). Thus, a heat-resistant self-bonding enameled wire was obtained.
（比較例６）
ポリスルホン樹脂をクレゾール及びキシレンの混合溶剤に溶解することにより樹脂分濃度２５％の耐熱自己融着性塗料を調製した。次に、上記ポリアミドイミドエナメル線の上に、得られた耐熱自己融着性塗料を塗布、焼き付けすることにより厚さ０．０１０ｍｍの融着層を有する耐熱自己融着性エナメル線を得た。
(Comparative Example 6)
A polysulfone resin was dissolved in a mixed solvent of cresol and xylene to prepare a heat-resistant self-fusing paint having a resin concentration of 25%. Next, the obtained heat-resistant self-bonding coating was applied onto the polyamide-imide enameled wire and baked to obtain a heat-resistant self-bonding enameled wire having a 0.010 mm-thick bonding layer.
（自己融着性エナメル線の試験方法）
（１）熱融着性試験
熱融着性試験はＮＥＭＡ規格に準拠し行った。供試用の耐熱自己融着性エナメル線を内径５．６ｍｍの７０ターンのヘリカルコイルとした。このヘリカルコイルを所定の温度（１８０℃、２００℃、２２０℃及び２４０℃）で１０分間加熱し隣接線間（融着層間）を熱融着させた。次に、その隣接線間を熱融着させたヘリカルコイルを室温（２０℃）で座屈試験を行い、得られた座屈強度を熱融着力として評価した。なお、本試験では、熱融着させるときの温度（融着温度）が２００℃の場合、２２０℃の場合及び２４０℃の場合において、熱融着後の室温での熱融着力が全て１００Ｎ以上のものを合格とし、１００Ｎ未満の熱融着力があるものを不合格とした。
(Test method for self-bonding enameled wire)
(1) Thermal fusibility test The thermal fusibility test was performed in accordance with NEMA standards. The heat resistant self-bonding enamel wire for the test was a 70-turn helical coil with an inner diameter of 5.6 mm. This helical coil was heated at a predetermined temperature (180 ° C., 200 ° C., 220 ° C., and 240 ° C.) for 10 minutes to heat-bond between adjacent wires (fusion layers). Next, a buckling test was performed at room temperature (20 ° C.) on the helical coil in which the adjacent wires were heat-sealed, and the obtained buckling strength was evaluated as the heat-sealing force. In addition, in this test, when the temperature at the time of heat fusion (fusing temperature) is 200 ° C., 220 ° C., and 240 ° C., the heat fusing power at room temperature after heat fusing is all 100 N or more. And those having a heat-sealing power of less than 100 N were rejected.
（２）高温下の接着力試験
熱融着性試験と同様にＮＥＭＡ規格に準拠し行った。供試用の耐熱自己融着性エナメル線を内径５．６ｍｍの７０ターンのヘリカルコイルとし、２２０℃で１０分間加熱して隣接線間（融着層間）を熱融着させた。なお、比較例６のみは２６０℃で１０分間加熱し、熱融着させた。次に、隣接線間を熱融着させたヘリカルコイルを２００℃中に１０分間置いた後で２００℃中で座屈試験を行い、得られた座屈強度を高温時の接着力として評価した。なお、本試験では、２００℃中で得られた座屈強度が１０Ｎ以上のものを合格とし、１０Ｎ未満のものを不合格とした。
(2) Adhesive strength test at high temperature It was performed in conformity with the NEMA standard in the same manner as the thermal fusion test. The heat-resistant self-bonding enamel wire for test was made into a 70-turn helical coil with an inner diameter of 5.6 mm and heated at 220 ° C. for 10 minutes to heat-bond between adjacent wires (fusion layers). Note that only Comparative Example 6 was heated at 260 ° C. for 10 minutes and heat-sealed. Next, after placing the helical coil in which the adjacent wires were heat-sealed at 200 ° C. for 10 minutes, a buckling test was performed at 200 ° C., and the obtained buckling strength was evaluated as an adhesive force at high temperature. . In this test, those having a buckling strength of 10 N or higher obtained at 200 ° C. were accepted and those less than 10 N were rejected.
（３）熱硬化の確認
実施例１〜１０、比較例１〜６で得られた耐熱自己融着性エナメル線から供試用として長さ１０ｃｍの試料を各々２本採取し、採取した２本の試料うちの１本をメチルエチルケトンに室温（２０℃）で１０分間浸漬した後、試料の表面を脱脂綿で拭取り、試料の外径をマイクロメーターで測定し、融着層がメチルエチルケトンによって剥離（溶解）されたかどうかによって加熱未処理での熱硬化の確認を行った。融着層が剥離（溶解）したもの（外径が０．８６０ｍｍのもの）をＢステージ状態として合格（○）、剥離（溶解）されない融着層が存在するもの（外径が０．８６０ｍｍよりも大きいもの）を不合格（×）として評価した。なお、比較例６は、メチルエチルケトンに溶解しないことから除外した。
(3) Confirmation of thermosetting Two samples each having a length of 10 cm were sampled from the heat-resistant self-bonding enamel wires obtained in Examples 1 to 10 and Comparative Examples 1 to 6, and the two samples were collected. After immersing one of the samples in methyl ethyl ketone for 10 minutes at room temperature (20 ° C), wipe the surface of the sample with absorbent cotton, measure the outer diameter of the sample with a micrometer, and peel (dissolve) the fused layer with methyl ethyl ketone. Depending on whether it was done or not, the heat curing without heating was confirmed. What has been peeled (dissolved) from the fused layer (having an outer diameter of 0.860 mm) is accepted as a B-stage state (O), and there is a fused layer that is not peeled (dissolved) (outer diameter from 0.860 mm) The larger) was evaluated as a failure (x). Comparative Example 6 was excluded because it did not dissolve in methyl ethyl ketone.
更に、採取した試料のもう１本を２２０℃で１０分間加熱し、冷却した後、同様にメチルエチルケトンに室温（２０℃）で１０分間浸漬し、試料の表面を脱脂綿で拭取り、２２０℃加熱処理後の外径をマイクロメーターで測定し、融着層がメチルエチルケトンによって剥離（溶解）されたかどうかによって加熱処理後での熱硬化の確認を行った。評価方法は、融着層の剥離（溶解）の発生が無いもの（外径が０．８８０ｍｍのもの）を熱硬化したものとして合格（○）とし、融着層の剥離の発生があるもの（外径が０．８８０ｍｍよりも小さいもの）を熱硬化していないものとして不合格（△：半硬化の意味、×：未硬化の意味）として評価した。なお、比較例６は、メチルエチルケトンに溶解しないことから除外した。 Further, another sample was heated at 220 ° C. for 10 minutes, cooled, and then similarly immersed in methyl ethyl ketone for 10 minutes at room temperature (20 ° C.), and the surface of the sample was wiped with absorbent cotton and heated at 220 ° C. The subsequent outer diameter was measured with a micrometer, and heat curing after the heat treatment was confirmed depending on whether or not the fused layer was peeled (dissolved) with methyl ethyl ketone. The evaluation method is as follows (○) as a result of thermosetting a material that does not peel (dissolve) from the fused layer (having an outer diameter of 0.880 mm), and a material that peels off the fused layer ( Those having an outer diameter smaller than 0.880 mm) were evaluated as rejects (Δ: meaning of semi-curing, ×: meaning of uncured) as those not thermally cured. Comparative Example 6 was excluded because it did not dissolve in methyl ethyl ketone.
（４）静摩擦係数
図２に耐熱自己融着性エナメル線の静摩擦係数の測定に用いた傾斜法静摩擦係数試験機の概要を示す。
(4) Static Friction Coefficient FIG. 2 shows an outline of the gradient static friction coefficient tester used for measuring the static friction coefficient of the heat-resistant self-bonding enameled wire.
この試験機を用いて、図２に示すように、長さ４００ｍｍの供試用の耐熱自己融着性エナメル線を３本採り、標点距離を３５０ｍｍとし試料を３％伸長後、２本を試料２３として傾斜可能に設けたプレート２１に、もう１本を半分に切りそれぞれ試料２３としてプレート２２に取り付ける。そして、プレート２２を、線同士が直角になるようにプレート２１上に重ねる。その場合、試料２３が接触していることを確認する。次に、プレート２１を傾斜速度１度／３秒に傾斜させ、プレート２２が少しでも動き出すときのプレート２１の傾斜角度θを求める。静摩擦係数（μ）はμ＝ｔａｎθにより求める。なお、ｔａｎθはｔａｎθ表示盤２４に表示されており、指針２５の位置から直読できる様になっている。なお、傾斜角度θが０のときに水準器２６が水平を示していないときは水平を示すように水平調節ネジ２７で調整を行う。 Using this testing machine, as shown in FIG. 2, three heat-resistant self-bonding enamel wires for a test with a length of 400 mm were taken, the gauge distance was 350 mm, the sample was elongated by 3%, and two samples were taken. Another plate is cut in half on the plate 21 that can be tilted as 23 and attached to the plate 22 as a sample 23. Then, the plate 22 is overlaid on the plate 21 so that the lines are at right angles. In that case, it is confirmed that the sample 23 is in contact. Next, the plate 21 is inclined at an inclination speed of 1 degree / 3 seconds, and the inclination angle θ of the plate 21 when the plate 22 starts to move even a little is obtained. The static friction coefficient (μ) is obtained by μ = tan θ. Note that tan θ is displayed on the tan θ display board 24 and can be directly read from the position of the pointer 25. If the level 26 is not level when the tilt angle θ is 0, the level adjustment screw 27 is used to adjust the level.
表１に、実施例１〜１０の耐熱自己融着性塗料（エナメル線作製後は融着層３）の組成と耐熱自己融着性エナメル線の熱融着力、高温下の接着力、熱硬化の確認及び静摩擦係数を示す。表２には、比較例１〜６について表１と同様に示す。 Table 1 shows the composition of the heat-resistant self-fusing paints of Examples 1 to 10 (the fusing layer 3 after enameled wire preparation), the heat-fusing force of the heat-resistant self-fusing enameled wire, the adhesive strength at high temperatures, and the thermosetting. The confirmation and coefficient of static friction are shown. In Table 2, it shows similarly to Table 1 about Comparative Examples 1-6.
表１に示すように、実施例１〜１０は、融着工程において２００℃以上２４０℃以下の温度で加熱し融着層を融着した場合に、１００Ｎ以上の熱融着力を発現していると共に、２００℃の高温雰囲気下においても１０Ｎ以上の高い接着力を有していることが判る。 As shown in Table 1, Examples 1 to 10 exhibit a thermal fusion power of 100 N or more when heated at a temperature of 200 ° C. or higher and 240 ° C. or lower in the fusion process to fuse the fusion layer. At the same time, it can be seen that it has a high adhesive strength of 10 N or higher even in a high temperature atmosphere of 200 ° C.
特に、実施例７〜１０は、実施例２の樹脂組成に更に滑剤として蜜蝋を添加したものであるが、すべり性（静摩擦係数）が０．１０以下であり、実施例２と比較してすべり性（静摩擦係数）が著しく向上していることが判る。このことから、実施例７〜１０は、巻線性の向上が見込まれる。 In particular, Examples 7 to 10 were obtained by adding beeswax as a lubricant to the resin composition of Example 2; however, the slip property (static coefficient of friction) was 0.10 or less, and compared with Example 2, It can be seen that the property (coefficient of static friction) is remarkably improved. From this, Examples 7-10 are expected to improve the winding property.
硬化剤としてビスマレイミド類を含有しないスルホン基含有ポリヒドロキシポリエーテル樹脂単独である比較例１及びスルホン基含有ポリヒドロキシポリエーテル樹脂１００質量部に対してビスマレイミド類を７．５質量部含有した比較例２では、融着工程において高い熱融着力を有するものの、２００℃の高温雰囲気下において所望の接着力（１０Ｎ以上）が得られないことが判る。 Comparative Example 1 which is a sulfone group-containing polyhydroxy polyether resin alone containing no bismaleimides as a curing agent and a comparison containing 7.5 parts by mass of bismaleimides with respect to 100 parts by mass of the sulfo group-containing polyhydroxy polyether resin In Example 2, it can be seen that the desired adhesive strength (10 N or more) cannot be obtained in a high temperature atmosphere of 200 ° C., although it has a high thermal fusion strength in the fusion step.
また、ビスマレイミド類の含有量がスルホン基含有ポリヒドロキシポリエーテル樹脂１００質量部に対して１１０質量部である比較例３では、２００℃の高温雰囲気下の接着力は１０Ｎ以上であるものの、融着工程において２００℃で加熱し融着した場合に、１００Ｎ以上の熱融着力が得られていないことが判る。つまり、比較例３では、２００℃以上２４０℃以下の温度で加熱し融着層を融着した場合に、得られる熱融着力にバラツキが生じてしまう。また、比較例３では、耐熱自己融着性塗料中にビスマレイミド類が析出してしまうといった分散不良が発生してしまった。 Further, in Comparative Example 3 in which the content of bismaleimides is 110 parts by mass with respect to 100 parts by mass of the sulfone group-containing polyhydroxy polyether resin, the adhesive strength in a high temperature atmosphere at 200 ° C. is 10 N or more. It can be seen that a heat fusion force of 100 N or more is not obtained when the fusion process is performed by heating at 200 ° C. in the adhesion process. That is, in Comparative Example 3, when the fusion layer is fused by heating at a temperature of 200 ° C. or more and 240 ° C. or less, the resulting heat fusion force varies. Further, in Comparative Example 3, a dispersion failure such that bismaleimides precipitated in the heat-resistant self-fusing paint occurred.
また、ビスマレイミド類に代えて、レゾール型フェノール樹脂あるいは安定化イソシアネートを硬化剤として用いた比較例４、５では、融着工程における熱融着力及び２００℃の高温雰囲気下の接着力がともに低く、不合格であることが判る。 Further, in Comparative Examples 4 and 5 using a resol type phenol resin or a stabilized isocyanate as a curing agent instead of bismaleimides, both the thermal fusing force in the fusing step and the adhesive strength in a high temperature atmosphere at 200 ° C. are low. , It turns out to be rejected.
また、スルホン基含有ポリヒドロキシポリエーテル樹脂に代えてポリスルホン樹脂を主剤として用いた比較例６も比較例４、５と同様、融着工程における熱融着力及び２００℃の高温雰囲気下の接着力がともに低く、不合格であることが判る。 Further, Comparative Example 6 using a polysulfone resin as a main agent in place of the sulfone group-containing polyhydroxy polyether resin has the same heat fusion force in the fusion process and adhesive force in a high temperature atmosphere of 200 ° C. as in Comparative Examples 4 and 5. Both are low and are found to be rejected.
１ 導体
２ 絶縁層
３ 融着層
１０ 耐熱自己融着性エナメル線
２０ 傾斜法静摩擦係数試験機
２１、２２ プレート
２３ 試料（耐熱自己融着性エナメル線）
２４ ｔａｎθ表示盤
２５ 指針
２６ 水準器
２７ 水平調節ネジ
DESCRIPTION OF SYMBOLS 1 Conductor 2 Insulating layer 3 Fusion | melting layer 10 Heat-resistant self-bonding enameled wire 20 Inclination method static friction coefficient testing machine 21, 22 Plate 23 Sample (heat-resistant self-bonding enameled wire)
24 tan θ display panel 25 Pointer 26 Level 27 Leveling screw
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014079098A JP2014167122A (en) | 2014-04-08 | 2014-04-08 | Heat-resistant self-fusing coating and heat-resistant self-fusing enamel wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014079098A JP2014167122A (en) | 2014-04-08 | 2014-04-08 | Heat-resistant self-fusing coating and heat-resistant self-fusing enamel wire |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010236452A Division JP5832735B2 (en) | 2010-10-21 | 2010-10-21 | Heat-resistant self-bonding paint and heat-resistant self-bonding enameled wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2014167122A true JP2014167122A (en) | 2014-09-11 |
Family
ID=51616964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014079098A Pending JP2014167122A (en) | 2014-04-08 | 2014-04-08 | Heat-resistant self-fusing coating and heat-resistant self-fusing enamel wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2014167122A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104560305A (en) * | 2014-12-24 | 2015-04-29 | 广东恒宝昌电工科技股份有限公司 | Polyether type enameled wire lubricant and preparation method thereof |
| CN114242349A (en) * | 2021-10-13 | 2022-03-25 | 怀化宇隆电工材料有限公司 | Hot wax coating device for surface of enameled wire and using method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5179278A (en) * | 1974-12-27 | 1976-07-10 | Sumitomo Electric Industries | |
| JPH01138272A (en) * | 1987-11-24 | 1989-05-31 | Toshiba Chem Corp | Self-bonding paint |
| JPH02199709A (en) * | 1989-01-27 | 1990-08-08 | Furukawa Electric Co Ltd:The | Self-fusing insulation cable |
| JP2009067934A (en) * | 2007-09-14 | 2009-04-02 | Hitachi Magnet Wire Corp | Heat-resistant self-fusing paint and heat-resistant self-fusing enamel wire |
-
2014
- 2014-04-08 JP JP2014079098A patent/JP2014167122A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5179278A (en) * | 1974-12-27 | 1976-07-10 | Sumitomo Electric Industries | |
| JPH01138272A (en) * | 1987-11-24 | 1989-05-31 | Toshiba Chem Corp | Self-bonding paint |
| JPH02199709A (en) * | 1989-01-27 | 1990-08-08 | Furukawa Electric Co Ltd:The | Self-fusing insulation cable |
| JP2009067934A (en) * | 2007-09-14 | 2009-04-02 | Hitachi Magnet Wire Corp | Heat-resistant self-fusing paint and heat-resistant self-fusing enamel wire |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104560305A (en) * | 2014-12-24 | 2015-04-29 | 广东恒宝昌电工科技股份有限公司 | Polyether type enameled wire lubricant and preparation method thereof |
| CN114242349A (en) * | 2021-10-13 | 2022-03-25 | 怀化宇隆电工材料有限公司 | Hot wax coating device for surface of enameled wire and using method thereof |
| CN114242349B (en) * | 2021-10-13 | 2024-02-27 | 东莞宇隆电工材料有限公司 | Hot wax coating device for surface of enameled wire and application method of hot wax coating device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI593742B (en) | Coverlay film, flexible printed wiring board using the same, and method for manufacturing thereof | |
| KR20160106638A (en) | Insulated electric wire, coil and electric/electronic device, and cracking prevention method for insulated electric wire | |
| JP2012116954A (en) | Adhesive composition, adhesive film and wiring film using the same | |
| WO2017094789A1 (en) | Self-fusible insulated wire, coil and electrical/electronic device | |
| JP5080915B2 (en) | Heat-resistant self-bonding coating composition and heat-resistant self-bonding enameled wire | |
| JP5832735B2 (en) | Heat-resistant self-bonding paint and heat-resistant self-bonding enameled wire | |
| TW200841402A (en) | Adhesive film for semiconductor and semiconductor device using the same | |
| JP2014167122A (en) | Heat-resistant self-fusing coating and heat-resistant self-fusing enamel wire | |
| KR20210013541A (en) | Active ester compound, curable resin composition, adhesive, adhesive film, circuit board, interlayer insulating material, and multilayer printed wiring board | |
| KR20140058574A (en) | Resin film | |
| WO2016136461A1 (en) | Multilayer adhesive film and connection structure | |
| CN115506177B (en) | Insulating sheet, method for manufacturing same, and rotating electrical machine | |
| JP2001155551A (en) | Insulated wire | |
| JP5957539B2 (en) | Heat-resistant wiring parts and manufacturing method thereof | |
| JP5486081B2 (en) | Liquid adhesive and adhesive tape for electronic parts | |
| JP2016007748A (en) | Adhesion structure | |
| JP2003147323A (en) | Adhesive composition, adhesive film, semiconductor carrier member, and semiconductor device and its production method | |
| JP2017157491A (en) | Insulation wire and manufacturing method therefor | |
| JP6298864B2 (en) | Insulated wire manufacturing method | |
| JP5467380B2 (en) | Self-bonding insulated wire and compressor drive motor | |
| JP2005325354A (en) | Thermo-adherent composition for coil wires | |
| WO2006008827A1 (en) | Self-adhesive insulated wire | |
| JP2017162769A (en) | Insulation wire and manufacturing method therefor | |
| TW201623430A (en) | Resin composition for sealing film, sealing film, sealing film with support, and electronic apparatus | |
| JPH0773746A (en) | Self-fusional insulated electric wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20150107 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20150113 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20150309 |
|
| A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A711 Effective date: 20150619 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20150619 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20150804 |