JP2000297204A - Epoxy resin composition, rotating electric machine coil, casting resin composition and rotating electric machine - Google Patents
Epoxy resin composition, rotating electric machine coil, casting resin composition and rotating electric machineInfo
- Publication number
- JP2000297204A JP2000297204A JP10891499A JP10891499A JP2000297204A JP 2000297204 A JP2000297204 A JP 2000297204A JP 10891499 A JP10891499 A JP 10891499A JP 10891499 A JP10891499 A JP 10891499A JP 2000297204 A JP2000297204 A JP 2000297204A
- Authority
- JP
- Japan
- Prior art keywords
- resin composition
- epoxy resin
- electric machine
- casting
- rotating electric
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、カチオン重合によ
る１液化が可能なエポキシ樹脂組成物に関し、貯蔵安定
性、電気特性、熱伝導率がすぐれていて、特に回転機コ
イルなどの含浸や注型に適したエポキシ樹脂組成物およ
び回転電機コイルおよび注型樹脂組成物および回転電機
に係る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an epoxy resin composition which can be liquefied by cationic polymerization, and has excellent storage stability, electrical properties and thermal conductivity, and particularly impregnation and casting of a rotating machine coil. The present invention relates to an epoxy resin composition, a rotating electric machine coil, a casting resin composition, and a rotating electric machine suitable for the present invention.
【０００２】[0002]
【従来の技術】回転電機は、コイル絶縁の電気特性や強
度の向上のため、樹脂を絶縁材料中に含浸し、加熱硬化
して特性を発揮させる。特に含浸の場合は、真空含浸後
加圧を加えて含浸度を向上させている。一方、含浸終了
後の余剰樹脂は、貯蔵タンクに戻入される。このよう
に、一般的に含浸樹脂は、含浸と貯蔵の工程を繰り返し
て使用されるので、その間の樹脂の安定性が重要であ
り、これは貯蔵安定性といわれる。この安定性が劣る
と、一定粘度を超えた時点で含浸樹脂として使用できな
くなるので廃棄処分にする。従って、安定性が劣ると樹
脂廃棄物が増加するという問題がある。2. Description of the Related Art In order to improve the electrical properties and strength of coil insulation, a rotating electric machine impregnates a resin into an insulating material and heat-hardens it to exhibit its properties. In particular, in the case of impregnation, pressure is applied after vacuum impregnation to improve the degree of impregnation. On the other hand, the surplus resin after the completion of the impregnation is returned to the storage tank. As described above, since the impregnated resin is generally used by repeating the steps of impregnation and storage, the stability of the resin during that time is important, and this is called storage stability. If this stability is inferior, it cannot be used as an impregnating resin when the viscosity exceeds a certain level, so it is disposed of. Therefore, there is a problem that if the stability is poor, resin waste increases.
【０００３】この様な含浸樹脂は一般にエポキシ系が重
用されるが、このエポキシ樹脂は、硬化剤として酸無水
物、アミン系、フェノール系が一般的である。このうち
酸無水物が最も多量に使用されている。As such impregnated resins, epoxy resins are generally used heavily, and as the epoxy resins, acid anhydrides, amine resins and phenol resins are generally used as curing agents. Of these, acid anhydrides are the most used.
【０００４】アミン系、フェノール系では、潜在性を有
する１液化が困難であり、酸無水物において、マイクロ
カプセル化触媒やアミンアダクト系、粉体系の触媒が潜
在性を有する１液化樹脂として使用されてきている。[0004] It is difficult to liquefy one of amines and phenols with potential, and in acid anhydrides, microencapsulation catalysts, amine adducts and powdery catalysts are used as latent one-liquefaction resins. Is coming.
【０００５】また、最近では、カチオン重合によるエポ
キシ樹脂の光・熱の単独または併用による硬化システム
が注目され、特に塗料関係で研究および開発が行なわれ
実用化が進展している。Recently, attention has been paid to a curing system using light and heat of an epoxy resin by cation polymerization alone or in combination, and research and development have been carried out particularly on paints, and practical use thereof has been progressed.
【０００６】種類としては、ジアゾニウム塩、ヨウドニ
ウム塩、スルホニウム塩系が主に使用されているが、潜
在性については不十分である。特に脂環式エポキシ樹脂
については、ほとんど期待できない。As the type, diazonium salts, iodonium salts and sulfonium salts are mainly used, but their potential is insufficient. Particularly, an alicyclic epoxy resin can hardly be expected.
【０００７】一方、これらカチオン重合触媒の電気特性
は、特にガラス転移温度以上において誘電体損失（ｔａ
ｎδ）が急激に増加する現象がある。回転電機等は、含
浸樹脂のガラス転移温度以上で運転されることもあるの
で、損失の急激な増加は絶縁寿命や効率等の点で好まし
くない。[0007] On the other hand, the electrical characteristics of these cationic polymerization catalysts, especially at a glass transition temperature or higher, a dielectric loss (ta)
nδ) increases rapidly. Since a rotating electric machine or the like may be operated at a temperature equal to or higher than the glass transition temperature of the impregnated resin, a sharp increase in loss is not preferable in terms of insulation life and efficiency.
【０００８】一般に注型樹脂は、エポキシ樹脂と酸無水
物硬化剤に対して、充填材としてシリカ系が多用されて
いる。これらは電気特性、機械特性、熱膨張特性など多
くの優れた点を有するので重用されている。しかしなが
ら、シリカ系の充填材を複合した注型樹脂は熱伝導率が
低い。またエポキシ注型樹脂関係において、カチオン重
合は、充填材が複合され光硬化ができないのでほとんど
研究されていない。[0008] In general, the casting resin often uses silica as a filler for the epoxy resin and the acid anhydride curing agent. These are used frequently because they have many excellent points such as electric characteristics, mechanical characteristics, and thermal expansion characteristics. However, a casting resin in which a silica-based filler is combined has a low thermal conductivity. Also, in relation to epoxy casting resins, cation polymerization has hardly been studied because the filler is complexed and cannot be photocured.
【０００９】注型樹脂においても、１液化は僅かにマイ
クロカプセル化触媒を使用した構成に見られるが、充填
材が複合した系では、混合時における充填材によって、
カプセルの破壊が発生し、製造の困難さや保存安定性を
損なうなどの問題が生じている。[0009] In the casting resin, one-liquefaction is slightly observed in a configuration using a microencapsulated catalyst. However, in a system in which a filler is compounded, depending on the filler at the time of mixing,
Capsules are broken, causing problems such as difficulty in production and loss of storage stability.
【００１０】[0010]
【発明が解決しようとする課題】以上説明したように、
従来の含浸樹脂においては、貯蔵安定性に、またエポキ
シのカチオン重合樹脂においては、貯蔵安定性と高温電
気特性において問題がある。貯蔵安定性が劣ると樹脂廃
棄量の増大を招き、高温電気特性が劣ると運転時の損失
が大きくなり、回転機の効率、信頼性の低下に影響する
問題が生じる。As described above,
Conventional impregnated resins have problems in storage stability, and cationic cationic polymerization resins have problems in storage stability and high-temperature electrical properties. Poor storage stability leads to an increase in the amount of resin waste, while poor high-temperature electrical characteristics results in a large loss during operation, which causes a problem that affects the efficiency and reliability of the rotating machine.
【００１１】また注型樹脂においては１液化が難しく安
定性に欠ける問題がある。エポキシのカチオン重合を取
り入れた注型樹脂はほとんど無く、熱伝導性と１液での
貯蔵性に課題がある。また、カチオン重合注型樹脂は高
温電気特性に劣る問題がある。Further, the casting resin has a problem that it is difficult to make one liquid and that it lacks stability. There are almost no casting resins incorporating cationic polymerization of epoxy, and there is a problem in thermal conductivity and storability in one liquid. In addition, the cation polymerization cast resin has a problem that its high-temperature electrical properties are inferior.
【００１２】本発明は、上記実状を考慮してなされたも
ので、エポキシのカチオン重合樹脂における保存安定性
の向上、高温電気特性（ｔａｎδ）の改善によって、作
業性に優れ、廃棄樹脂の少ない１液性のエポキシ樹脂組
成物および回転電機コイルおよび注型樹脂組成物および
回転電機を提供することを目的とする。The present invention has been made in consideration of the above-mentioned circumstances, and has improved storage stability and improved high-temperature electrical characteristics (tan δ) of a cationically polymerized epoxy resin. An object is to provide a liquid epoxy resin composition, a rotating electric machine coil, a casting resin composition, and a rotating electric machine.
【００１３】[0013]
【課題を解決するための手段】上記課題を達成するため
の本発明に係る請求項１のエポキシ樹脂組成物は、
（ａ）主剤であるエポキシ樹脂と（ｂ）重合開始剤であ
るオニウム塩と（ｃ）イオン吸着剤とを含有することを
特徴とするものである。In order to achieve the above object, the epoxy resin composition according to the first aspect of the present invention comprises:
It is characterized by containing (a) an epoxy resin as a main agent, (b) an onium salt as a polymerization initiator, and (c) an ion adsorbent.
【００１４】前記（ａ）エポキシ樹脂には、一分子中に
少なくとも１個のエポキシ基を有するエポキシ樹脂が使
用され得る。その具体例としては、ビスフェノールＡ型
エポキシ樹脂、ビスフェノールＦ型エポキシ樹脂、ビス
フェノールＡ−Ｄ型エポキシ樹脂、多価アルコールのグ
リシジルエステル、脂環式エポキシ樹脂、アミン型エポ
キシ樹脂、ノボラック型エポキシ樹脂、等が挙げられ
る。これらは単独もしくは混合して用いられ、必要に応
じて、反応性希釈剤、または非反応性希釈剤等が添加さ
れた上で使用されうる。As the epoxy resin (a), an epoxy resin having at least one epoxy group in one molecule can be used. Specific examples thereof include bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol A-D type epoxy resin, glycidyl ester of polyhydric alcohol, alicyclic epoxy resin, amine type epoxy resin, novolak type epoxy resin, etc. Is mentioned. These may be used alone or as a mixture, and may be used after adding a reactive diluent or a non-reactive diluent, if necessary.
【００１５】（ｂ）重合開始剤であるオニウム塩は、下
記化学式に示すジアゾニウム塩、ヨウドニウム塩、スル
ホニウム塩などがある。このうち請求項２に示したスル
ホニウム塩は、光にも熱にも反応を示すので併用の場合
は特に有効である。(B) Examples of the onium salt as a polymerization initiator include a diazonium salt, an iodonium salt and a sulfonium salt represented by the following chemical formula. Of these, the sulfonium salt described in claim 2 is particularly effective when used in combination because it reacts with light and heat.
【００１６】[0016]
【化１】 Embedded image
【００１７】（ｃ）イオン吸着剤は、請求項３に記載し
たように無機イオン交換体や無機イオン捕捉剤を含有す
るものである。これらは、カチオン重合開始剤の遊離イ
オンとして存在しているイオンを捕捉する働きをする。
これにより、少量の遊離イオンによって徐々に生じる重
合を抑制するので、保存安定性が大幅に向上する効果が
発現する。一方、温度を高くして重合硬化を行うが、硬
化後の遊離イオンも捕捉するので、遊離イオンによる誘
電体損失の増加を抑制し、優れた電気特性を得ることが
できる。(C) The ion adsorbent contains an inorganic ion exchanger and an inorganic ion scavenger as described in claim 3. These function to trap ions existing as free ions of the cationic polymerization initiator.
This suppresses the polymerization that is gradually caused by a small amount of free ions, so that the effect of greatly improving the storage stability is exhibited. On the other hand, polymerization curing is performed at a high temperature, but free ions after curing are also captured, so that an increase in dielectric loss due to free ions can be suppressed, and excellent electrical characteristics can be obtained.
【００１８】請求項４の陽イオン吸着剤は、遊離イオン
のうち、エポキシ樹脂の重合に寄与する遊離カチオンを
選択的に捕捉するので、保存安定性の向上に効果的に作
用する。The cation adsorbent according to claim 4 selectively captures, among free ions, free cations that contribute to the polymerization of the epoxy resin, and thus effectively acts to improve storage stability.
【００１９】請求項５は、エポキシ樹脂100 重量部に対
する陰イオン吸着剤０〜0.3 重量部、陽イオン0.1 〜８
重量部配合したことを特徴としている。陰イオン吸着剤
は、保存安定性に寄与していないが、硬化後の電気特性
に効果がある。しかしながら、0.3 重量部以上を単独で
配合すると保存安定性を悪くするので、陽イオン吸着剤
と複合してもこの範囲が適している。陽イオン吸着剤
は、少量の0.1 重量部でも保存安定性に効果があるが、
８重量部以上の場合、カチオン重合開始剤を吸着して、
硬化時間を長くする現象が発生するので好ましくない。
したがって、記載した範囲が適している。In another embodiment, 0 to 0.3 parts by weight of the anion adsorbent and 0.1 to 8 parts by weight of the cation are used with respect to 100 parts by weight of the epoxy resin.
It is characterized by being blended by weight. The anion adsorbent does not contribute to the storage stability, but has an effect on the electrical properties after curing. However, if 0.3 part by weight or more is blended alone, the storage stability deteriorates. Therefore, even when combined with a cation adsorbent, this range is suitable. Cation adsorbents are effective for storage stability even with a small amount of 0.1 parts by weight,
In the case of 8 parts by weight or more, the cationic polymerization initiator is adsorbed,
It is not preferable because a phenomenon of prolonging the curing time occurs.
Therefore, the described ranges are suitable.
【００２０】請求項６記載の回転電機絶縁コイルに真空
加圧含浸を行うと、硬化後のコイルの電気特性は、ガラ
ス転移温度以上においても誘電体損失の増加が少なく優
れた特性を示す。When the rotary electric machine insulation coil according to claim 6 is subjected to vacuum pressure impregnation, the coil after hardening exhibits excellent characteristics with little increase in dielectric loss even at a temperature higher than the glass transition temperature.
【００２１】請求項７、請求項８は、充填材を配合する
高熱伝導性の注型樹脂において、充填材の熱伝導率が10
Ｗ／ｍＫ以下の場合、充填率を高める必要がありその結
果複合材料の粘度が高くなるので実用的でない。また充
填材の種類としては、アルミナ、チッ化アルミ、チッ化
ケイ素、炭化ケイ素を単独もしくは複数を合わせて20体
積％以上が好ましい。最低の20体積％にしても樹脂単体
の少なくとも３倍以上の熱伝導率が得られ粘度も低く実
用性が高い。According to a seventh or eighth aspect of the present invention, there is provided a cast resin having a high thermal conductivity in which a filler is blended, wherein the filler has a thermal conductivity of 10
If it is less than W / mK, the filling rate must be increased, and as a result, the viscosity of the composite material increases, which is not practical. The type of the filler is preferably 20% by volume or more of alumina, aluminum nitride, silicon nitride, and silicon carbide alone or in combination. Even at the minimum of 20% by volume, at least three times the thermal conductivity of the resin alone is obtained, the viscosity is low, and the practicability is high.
【００２２】請求項９は、無機系高熱伝導充填材に更に
球状ないしは亜球状のシリカ粉体を複合したものであ
る。高熱伝導充填材は一般に比重が高いので樹脂と複合
した場合、充填材の沈降現象がある。これを比較的比重
の軽い微細のシリカ粉末を適量配合することで、高熱伝
導充填材の沈降を抑制する効果がある。また、シリカ粉
体の形状として、球状ないしは亜球状を使用し、粒径を
選択することで粘性が低く流動性に富む作業性に優れた
注型樹脂組成物が得られる。請求項10の回転電機は、コ
イルエンドに注型し、コイルエンドの発熱を鉄心に熱伝
導することでコイルエンドを冷却するのに効果がある。In a ninth aspect of the present invention, a spherical or subspherical silica powder is further compounded with an inorganic high thermal conductive filler. Since the high thermal conductive filler generally has a high specific gravity, when it is combined with a resin, there is a sedimentation phenomenon of the filler. By blending this with an appropriate amount of fine silica powder having a relatively low specific gravity, there is an effect of suppressing the sedimentation of the high thermal conductive filler. Further, by using a spherical or subspherical shape as the shape of the silica powder and selecting the particle size, a cast resin composition having a low viscosity and a high flowability and excellent in workability can be obtained. The rotating electric machine according to claim 10 is effective in cooling the coil end by casting the coil end and conducting heat generated from the coil end to the iron core.
【００２３】[0023]
【発明の実施の形態】以下本発明の実施例について詳細
に説明する。 (1) ［実施例１］〜［実施例11］および［比較例１］ビ
スフェノールＦ型エポキシ樹脂（油化シェルエポキシ社
製商品名：ＹＬ−6042）100 重量部に対して、希釈剤と
してヘキシルジグリシジルエーテル（油化シェルエポキ
シ社製商品名：ＹＥＤ−216 ）20重量部、スルフォニウ
ム塩系重合開始剤（三新化学社製：サンエイドＳＩ−10
0 Ｌ）１重量部、イオン吸着剤として東亜合成社製のＩ
ＸＥ−300 （陽イオン交換）、ＩＸＥ−500 （陰イオン
交換）を添加して室温で十分に攪拌することにより表１
に示す実施例１から実施例11のエポキシ樹脂組成物を作
成した。Embodiments of the present invention will be described below in detail. (1) [Example 1] to [Example 11] and [Comparative Example 1] 100 parts by weight of bisphenol F type epoxy resin (trade name: YL-6042, manufactured by Yuka Shell Epoxy Co., Ltd.), hexyl as a diluent was used as a diluent. 20 parts by weight of diglycidyl ether (trade name: YED-216, manufactured by Yuka Shell Epoxy Co., Ltd.) and a sulfonium salt-based polymerization initiator (manufactured by Sanshin Chemical Co., Ltd .: Sun-Aid SI-10)
0 L) 1 part by weight, I made by Toagosei Co., Ltd. as an ion adsorbent
XE-300 (cation exchange) and IX-500 (anion exchange) were added and thoroughly stirred at room temperature.
The epoxy resin compositions of Examples 1 to 11 shown in Table 1 were prepared.
【００２４】[0024]
【表１】 （注）phr ：重量部 貯蔵安定性：粘度が２倍になる時間。油槽中において試
験管法で測定モデルコイルの電気特性（ｔａｎδ）測定
した試料に○印[Table 1] (Note) phr: parts by weight Storage stability: time for viscosity to double. In the oil tank, mark the sample whose electrical properties (tan δ) of the measured model coil were measured by the test tube method.
【００２５】エポキシ樹脂と重合開始剤として三新化学
社製のサンエイドＳＩ−100 Ｌを使用した組成を比較例
１とした。40℃の貯蔵安定性は50日、150 ℃におけるゲ
ル化時間は、７分10秒であった。Comparative Example 1 was a composition using an epoxy resin and San Aid SI-100L manufactured by Sanshin Chemical Co., Ltd. as a polymerization initiator. The storage stability at 40 ° C. was 50 days, and the gel time at 150 ° C. was 7 minutes and 10 seconds.
【００２６】ついで、10mm×20mm×200 mmの寸法のアル
ミニウム導体に幅25mmのガラスクロス裏打ち集成マイカ
テープを１／２重巻きで４回巻回し、真空加圧含浸法
（ＶＰＩ）で含浸した後、常温から150 ℃まで２時間で
昇温し、150 ℃で５時間加熱硬化することによって、絶
縁モデルコイルを作成した。このコイルにアルミニウム
箔の電極を取り付け、室温から１５０℃までの電気特性
を測定し、図１の結果を得た。Next, a 25 mm wide glass cloth lined mica tape is wound around an aluminum conductor having a size of 10 mm × 20 mm × 200 mm four times in a double winding and impregnated by a vacuum pressure impregnation method (VPI). Then, the temperature was raised from room temperature to 150 ° C. for 2 hours, and then heat-cured at 150 ° C. for 5 hours to produce an insulated model coil. An electrode of aluminum foil was attached to this coil, and the electrical characteristics from room temperature to 150 ° C. were measured, and the results of FIG. 1 were obtained.
【００２７】実施例１〜実施例８は、陽イオン吸着剤を
加えた組成で、実施例９〜実施例１１は、陽イオン吸着
剤と陰イオン吸着剤を複合した組成である。表１に示し
たように、陽イオン吸着剤の添加量が増加するにしたが
って貯蔵寿命が延びることが明らかである。150 ℃のゲ
ル化時間は、陽イオン吸着剤の添加量が0.5 phr が最も
短く、それ以上増加すると徐々に長くなる傾向がある。Examples 1 to 8 are compositions in which a cation adsorbent is added, and Examples 9 to 11 are compositions in which a cation adsorbent is combined with an anion adsorbent. As shown in Table 1, it is clear that the storage life increases as the amount of the cation adsorbent increases. The gel time at 150 ° C. is the shortest when the amount of the cation adsorbent added is 0.5 phr, and tends to gradually increase as the amount added increases.
【００２８】モデルコイルの電気特性として誘電損（ｔ
ａｎδ）の温度特性を図１に示したが、イオン吸着剤を
添加した実施例は、いずれの場合もｔａｎδが小さくな
り吸着剤によるイオンの捕捉効果が現れている。As an electrical characteristic of the model coil, dielectric loss (t
FIG. 1 shows the temperature characteristics of an (an δ). In each of the examples in which the ion adsorbent was added, tan δ was small and the effect of trapping ions by the adsorbent appeared.
【００２９】(2) ［比較例２］［実施例12］〜［実施例
20］ ビスフェノールＡ（油化シェル社製；エピコート828 ）
100 重量部、サンエイドＳＩ−100 Ｌ；１重量部、陽イ
オン吸着剤ＩＸＥ−300 ；0.5 重量部に、充填材として
チッ化ケイ素および／または球状溶融シリカを混合して
表２に示す注型樹脂組成物を作成した。混合は、ダール
トン社の小型万能攪拌機を使用した。(2) [Comparative Example 2] [Example 12] to [Example]
20] Bisphenol A (manufactured by Yuka Shell Co .; Epikote 828)
100 parts by weight, San Aid SI-100 L; 1 part by weight, cation adsorbent IXE-300; 0.5 part by weight, mixed with silicon nitride and / or spherical fused silica as a filler, and cast resin shown in Table 2 A composition was made. For mixing, a small universal stirrer manufactured by Dalton was used.
【００３０】[0030]
【表２】 （注）充填材の添加量は体積率（％）で表示した。[Table 2] (Note) The amount of filler added is indicated by volume ratio (%).
【００３１】沈降は200 mlのメスシリンダーに200 ml注
入し、40℃で１日置いたのち目視により観察した。一
方、150 mm×200 mm×２mmのガラス板に離型として粘着
テフロンシートを貼り、２枚のガラス板の間に１mmのシ
リコーンチューブをスペーサとしてコの字形に挟み樹脂
を注入した。これを120 ℃で１時間、150 ℃で５時間の
加熱硬化を行い、150 mm×100 mm×１mmの樹脂板を成形
した。熱伝導率は、この樹脂板を切り出し、室温におけ
るレーザーフラッシュ法で測定した。The sedimentation was observed by visual observation after injecting 200 ml into a 200 ml measuring cylinder and leaving it at 40 ° C. for 1 day. On the other hand, an adhesive Teflon sheet was attached to a 150 mm × 200 mm × 2 mm glass plate as a mold release, and a resin was injected between two glass plates in a U-shape using a 1 mm silicone tube as a spacer. This was heat-cured at 120 ° C. for 1 hour and at 150 ° C. for 5 hours to form a 150 mm × 100 mm × 1 mm resin plate. The thermal conductivity was measured by cutting out the resin plate and using a laser flash method at room temperature.
【００３２】表２に充填材の添加量に対する沈降と熱伝
導率をまとめて示した。沈降について言えば、充填量が
30体積率までは比較的大きい。シリカを複合すると比重
の点からも沈降が少なくなる。また熱伝導率は、20体積
率で約２倍になるが絶対値としては小さい。Table 2 summarizes the sedimentation and the thermal conductivity with respect to the amount of filler added. When it comes to settling,
Relatively large up to 30 volume ratio. When silica is combined, sedimentation is reduced in terms of specific gravity. The thermal conductivity is about twice as large at 20 volume ratio, but its absolute value is small.
【００３３】(3) ［実施例21］ ビスフェノールＡ（油化シェル社製；エピコート828 ）
100 重量部、サンエイドＳＩ−100 Ｌ；１重量部、陽イ
オン吸着剤ＩＸＥ−300 ；0.5 重量部に、充填材として
チッ化ケイ素40体積％、球状シリカ10体積％を複合した
高熱伝導注型樹脂を作成した。この樹脂の硬化後の熱伝
導率は1.5 Ｗ／mKであった。(3) [Example 21] Bisphenol A (manufactured by Yuka Shell; Epikote 828)
100 parts by weight, Sun-Aid SI-100 L; 1 part by weight, cation adsorbent IXE-300; 0.5 part by weight, high thermal conductive casting resin in which 40% by volume of silicon nitride and 10% by volume of spherical silica are combined as a filler It was created. The thermal conductivity of the resin after curing was 1.5 W / mK.
【００３４】鉄心を強制冷却する構造の100 kWモーター
のコイルエンドと鉄心をこの樹脂で一体成形した。モー
タの稼動におけるコイルエンドの温度は、従来の含浸処
理のみの場合145 ℃まで上昇するのに比較して、本高熱
伝導樹脂で成形した場合、95℃であった。本樹脂によれ
ば、このように大きな冷却効果が得られるので、機器の
小型化、高密度化、高出力化などが可能である。A coil end and a core of a 100 kW motor having a structure for forcibly cooling the core were integrally formed of this resin. The temperature of the coil end during the operation of the motor was 95 ° C. in the case of molding with the present high thermal conductive resin, as compared to the temperature of 145 ° C. in the case of the conventional impregnation treatment alone. According to the present resin, since such a large cooling effect can be obtained, it is possible to reduce the size, density, and output of the device.
【００３５】[0035]
【発明の効果】以上説明したように本発明によれば、エ
ポキシのカチオン重合において、エポキシ樹脂、カチオ
ン重合開始剤、イオン吸着剤を基本樹脂組成としている
が、このうち特にイオン吸着剤を用いることによって、
貯蔵安定性が向上すると同時に含浸樹脂として使用した
場合、高温の電気特性のうちｔａｎδが小さくなる効果
がある。As described above, according to the present invention, in the cationic polymerization of epoxy, the basic resin composition is an epoxy resin, a cationic polymerization initiator, and an ion adsorbent. By
When used as an impregnated resin at the same time as the storage stability is improved, there is an effect that tan δ among the high-temperature electrical characteristics is reduced.
【００３６】また、前記の基本樹脂組成に充填材を複合
することで、長い保存寿命と優れた電気特性はそのまま
で熱伝導率を高めることができ、発熱部分の熱伝達（冷
却）に効果がある。さらに、本樹脂組成は、一液性の樹
脂で取扱が容易であり、保存寿命が長く無駄がないの
で、樹脂の廃棄量が大幅に減少するなど優れた効果があ
る。Further, by combining the basic resin composition with a filler, the thermal conductivity can be increased while maintaining a long storage life and excellent electric characteristics, and the effect of heat transfer (cooling) of the heat generating portion can be obtained. is there. Furthermore, the present resin composition is a one-part resin, is easy to handle, has a long shelf life and is not wasted, and has an excellent effect such as a drastic reduction in the amount of resin waste.
【図１】本発明の実施例および比較例のエポキシ樹脂組
成物のｔａｎδの温度特性を示す図。FIG. 1 is a graph showing the temperature characteristics of tan δ of epoxy resin compositions of Examples and Comparative Examples of the present invention.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｈ０２Ｋ 3/30 Ｈ０２Ｋ 3/30 15/12 15/12 Ｄ (72)発明者 幡野 浩 神奈川県横浜市鶴見区末広町２丁目４番地 株式会社東芝京浜事業所内 (72)発明者 村田 聖子 神奈川県横浜市鶴見区末広町２丁目４番地 株式会社東芝京浜事業所内 Ｆターム(参考） 4J002 CD011 CD051 CD061 DE148 DF018 DJ008 DJ018 EB116 EQ016 EV296 FD018 FD206 FD207 GQ00 4J036 AB00 AB07 AD08 AF01 AH00 FA02 FA03 FA04 FA05 GA03 GA23 GA24 GA25 JA05 5G305 AA02 AA12 AB01 AB10 AB27 BA09 BA15 BA22 CA15 CB04 CB25 CB30 CC02 CC04 CC05 CD01 CD20 5H604 AA08 CC01 DA01 DA15 PB03 5H615 AA01 PP01 PP12 RR05 RR07 SS05 SS24 SS41 SS44 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) H02K 3/30 H02K 3/30 15/12 15/12 D (72) Inventor Hiroshi Hatano Tsurumi, Yokohama City, Kanagawa Prefecture 2-4, Suehirocho, Ward Toshiba Keihin Works Co., Ltd. (72) Inventor Seiko Murata 2-4, Suehirocho, Tsurumi-ku, Yokohama, Kanagawa Prefecture F-term (reference) 4J002 CD011 CD051 CD061 DE148 DF018 DJ008 DJ018 EB116 EQ016 EV296 FD018 FD206 FD207 GQ00 4J036 AB00 AB07 AD08 AF01 AH00 FA02 FA03 FA04 FA05 GA03 GA23 GA24 GA25 JA05 5G305 AA02 AA12 AB01 AB10 AB27 BA09 BA15 BA22 CA15 CB04 CB25 CB30 CC02 CC04 CC01 CD01 ACD5A01 5A PP12 RR05 RR07 SS05 SS24 SS41 SS44
Claims (10)
るエポキシ樹脂と、カチオン重合開始剤であるオニウム
塩と、イオン吸着剤とを必須成分として含有することを
特徴とするエポキシ樹脂組成物。1. An epoxy resin composition comprising, as essential components, an epoxy resin having one or more epoxy groups, an onium salt as a cationic polymerization initiator, and an ion adsorbent as essential components.
がスルホニウム塩であることを特徴とする請求項１記載
のエポキシ樹脂組成物。2. The epoxy resin composition according to claim 1, wherein the onium salt as a cationic polymerization initiator is a sulfonium salt.
いは無機イオン捕捉剤であることを特徴とする請求項１
記載のエポキシ樹脂組成物。3. The method according to claim 1, wherein the ion adsorbent is an inorganic ion exchanger or an inorganic ion scavenger.
The epoxy resin composition according to the above.
着あるいは捕捉するものであることを特徴とする請求項
１記載のエポキシ樹脂組成物。4. The epoxy resin composition according to claim 1, wherein the ion adsorbent selectively adsorbs or traps a cation.
重量部に対して、陰イオン吸着剤を０〜0.3 重量部、陽
イオン吸着剤を0.1 〜８重量部配合したことを特徴とす
る請求項１記載のエポキシ樹脂組成物。5. An epoxy resin 100 as an ion adsorbent.
2. The epoxy resin composition according to claim 1, wherein 0 to 0.3 parts by weight of the anion adsorbent and 0.1 to 8 parts by weight of the cation adsorbent are added to the parts by weight.
テープ等を巻き回した絶縁に前記請求項１記載のエポキ
シ樹脂組成物を含浸し加熱硬化してなる回転電機絶縁コ
イル。6. A rotary electric machine insulation coil obtained by impregnating the epoxy resin composition according to claim 1 into an insulation obtained by winding a backing mica tape or the like around a single or a plurality of conductors and heating and curing the composition.
填材を前記請求項１のエポキシ樹脂組成物に添加混合し
たことを特徴とする注型樹脂組成物。7. A casting resin composition, wherein an inorganic filler having a thermal conductivity of 10 W / mK or more is added to and mixed with the epoxy resin composition of claim 1.
アルミ、チッ化ケイ素、炭化ケイ素の単独もしくは複数
を合わせて20体積％以上請求項１のエポキシ樹脂組成物
に添加混合したことを特徴とする注型樹脂組成物。8. An epoxy resin composition according to claim 1, wherein at least 20% by volume of alumina, aluminum nitride, silicon nitride, silicon carbide, or a combination thereof as inorganic filler is combined. Casting resin composition.
しは亜球状のシリカ粉体を複合した充填材を前記請求項
１のエポキシ樹脂組成物に添加混合したことを特徴とす
る注型樹脂組成物。9. A casting resin, wherein a filler obtained by compounding the inorganic filler according to claim 8 and spherical or sub-spherical silica powder is added to and mixed with the epoxy resin composition according to claim 1. Composition.
組成物をコイルあるいはコイルエンドに注型し硬化した
ことを特徴とする回転電機。10. A rotating electric machine wherein the casting resin composition according to claim 8 or 9 is cast into a coil or a coil end and cured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10891499A JP2000297204A (en) | 1999-04-16 | 1999-04-16 | Epoxy resin composition, rotating electric machine coil, casting resin composition and rotating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10891499A JP2000297204A (en) | 1999-04-16 | 1999-04-16 | Epoxy resin composition, rotating electric machine coil, casting resin composition and rotating electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000297204A true JP2000297204A (en) | 2000-10-24 |
Family
ID=14496855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10891499A Pending JP2000297204A (en) | 1999-04-16 | 1999-04-16 | Epoxy resin composition, rotating electric machine coil, casting resin composition and rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000297204A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004006271A1 (en) * | 2002-07-04 | 2004-01-15 | Kabushiki Kaisha Toshiba | High thermal conductivity insulating member and its manufacturing method, electromagnetic coil, and electromagnetic device |
| JP2004035782A (en) * | 2002-07-04 | 2004-02-05 | Toshiba Corp | Highly thermoconductive material and manufacturing method therefor |
| JP2006307062A (en) * | 2005-04-28 | 2006-11-09 | Idemitsu Kosan Co Ltd | Epoxy resin composition and optoelectronic member using the same |
| US7524557B2 (en) | 2002-07-04 | 2009-04-28 | Kabushiki Kaisha Toshiba | Highly heat conductive insulating member, method of manufacturing the same and electromagnetic device |
| JP2012087282A (en) * | 2010-10-21 | 2012-05-10 | Sanei Kagaku Kk | Cation polymerizable resin composition |
| WO2013021895A1 (en) * | 2011-08-05 | 2013-02-14 | 積水化学工業株式会社 | Conductive material and connection structure |
| WO2019130587A1 (en) * | 2017-12-28 | 2019-07-04 | 日立化成株式会社 | Thermosetting resin composition, coil for rotating electric machine and method for producing same, and rotating electric machine |
-
1999
- 1999-04-16 JP JP10891499A patent/JP2000297204A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004006271A1 (en) * | 2002-07-04 | 2004-01-15 | Kabushiki Kaisha Toshiba | High thermal conductivity insulating member and its manufacturing method, electromagnetic coil, and electromagnetic device |
| JP2004035782A (en) * | 2002-07-04 | 2004-02-05 | Toshiba Corp | Highly thermoconductive material and manufacturing method therefor |
| EP1530223A1 (en) * | 2002-07-04 | 2005-05-11 | Kabushiki Kaisha Toshiba | High thermal conductivity insulating member and its manufacturing method, electromagnetic coil, and electromagnetic device |
| EP1530223A4 (en) * | 2002-07-04 | 2006-06-28 | Toshiba Kk | High thermal conductivity insulating member and its manufacturing method, electromagnetic coil, and electromagnetic device |
| CN1324615C (en) * | 2002-07-04 | 2007-07-04 | 株式会社东芝 | High thermal conductivity insulating member and its manufacturing method, electromagnetic coil, and electromagnetic device |
| US7524557B2 (en) | 2002-07-04 | 2009-04-28 | Kabushiki Kaisha Toshiba | Highly heat conductive insulating member, method of manufacturing the same and electromagnetic device |
| JP2006307062A (en) * | 2005-04-28 | 2006-11-09 | Idemitsu Kosan Co Ltd | Epoxy resin composition and optoelectronic member using the same |
| JP4674112B2 (en) * | 2005-04-28 | 2011-04-20 | 出光興産株式会社 | Epoxy resin composition and optical electronic member using the same |
| JP2012087282A (en) * | 2010-10-21 | 2012-05-10 | Sanei Kagaku Kk | Cation polymerizable resin composition |
| WO2013021895A1 (en) * | 2011-08-05 | 2013-02-14 | 積水化学工業株式会社 | Conductive material and connection structure |
| JP5162728B1 (en) * | 2011-08-05 | 2013-03-13 | 積水化学工業株式会社 | Conductive material and connection structure |
| WO2019130587A1 (en) * | 2017-12-28 | 2019-07-04 | 日立化成株式会社 | Thermosetting resin composition, coil for rotating electric machine and method for producing same, and rotating electric machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4599063B2 (en) | Coil winding insulation tape | |
| KR102001688B1 (en) | Insulation formulations | |
| JP5611485B1 (en) | Insulating tape, manufacturing method thereof, and stator coil | |
| JP6058169B2 (en) | Insulating tape and manufacturing method thereof, stator coil and manufacturing method thereof, and rotating electric machine | |
| CN103649158B (en) | Insulation preparation | |
| JP2000297204A (en) | Epoxy resin composition, rotating electric machine coil, casting resin composition and rotating electric machine | |
| JP2015083663A (en) | Electric insulation resin composition and cured product thereof as well as coil, stator, rotating machine and high-voltage equipment using the same | |
| JP6101122B2 (en) | Epoxy resin composition for mold transformer, mold transformer, and method for producing mold transformer | |
| JP4403829B2 (en) | Rotating electric machine, electrically insulated wire ring and epoxy resin composition used therefor | |
| CA2836693A1 (en) | High thermal conductivity composite for electric insulation, and articles thereof | |
| JP2003158842A (en) | Rotary machine | |
| US5112888A (en) | Epoxy resin composition containing long chain aliphatic diacids and/or diphenylol derivatives | |
| JP2000007761A (en) | Thermosetting resin composition | |
| JP3010828B2 (en) | Two-part epoxy resin composition | |
| JP3932614B2 (en) | Epoxy resin composition and method for insulating electrical equipment using the same | |
| JP2011201948A (en) | Epoxy resin composition for casting and coil component using the same | |
| JP3705704B2 (en) | Epoxy resin composition, inductance component | |
| JPH02227451A (en) | Filler for resins and liquid epoxy resin composition | |
| US20220028574A1 (en) | Electrical insulation material and manufacturing process | |
| JP2002155193A (en) | Epoxy resin composition and electrical/electronic component device | |
| JP2006111721A (en) | Epoxy resin composition for impregnation and electric/electronic part device | |
| JP2002047337A (en) | Resin composition for sealing and semiconductor sealing device | |
| JPH07238145A (en) | Epoxy resin composition | |
| JP2022011983A (en) | Resin composition for sealing ignition coil and ignition coil | |
| JP3980507B2 (en) | Rotating electric machine, electrically insulated wire ring and epoxy resin composition used therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20040116 |