JP2014167122A - Heat-resistant self-fusing coating and heat-resistant self-fusing enamel wire - Google Patents
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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)
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Cited By (2)
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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 |
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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 |
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Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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