JPH0255887B2 - - Google Patents
Info
- Publication number
- JPH0255887B2 JPH0255887B2 JP12023883A JP12023883A JPH0255887B2 JP H0255887 B2 JPH0255887 B2 JP H0255887B2 JP 12023883 A JP12023883 A JP 12023883A JP 12023883 A JP12023883 A JP 12023883A JP H0255887 B2 JPH0255887 B2 JP H0255887B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- curing
- curing accelerator
- insulating layer
- anhydride
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/127—Encapsulating or impregnating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
- Organic Insulating Materials (AREA)
Description
【発明の詳細な説明】
本発明は硬化促進剤を保持させた絶縁テープを
導体の周囲に巻回して形成した主絶縁層にレジン
を含浸し硬化させる電気絶縁線輪の製造方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing an electrically insulating coil, in which a main insulating layer formed by winding an insulating tape containing a curing accelerator around a conductor is impregnated with a resin and then cured. .
硬化剤として酸無水物を使用するエポキシ樹脂
組成物は粘度が低く、硬化したものは電気的、機
械的熱的性質が優れているので、電気絶縁線輪を
製作する場合の含浸剤として用いるのに好適であ
る。 Epoxy resin compositions that use acid anhydride as a curing agent have low viscosity, and the cured product has excellent electrical, mechanical, and thermal properties, so it is suitable for use as an impregnating agent when manufacturing electrical insulation wire. suitable for
しかしエポキシ樹脂と酸無水物とからなる樹脂
組成物は、ポツトライフは充分に長いが、硬化性
に劣り、その硬化に高温と長時間を要するという
難点がある。 However, although a resin composition consisting of an epoxy resin and an acid anhydride has a sufficiently long pot life, it has poor curability and has the drawback of requiring high temperature and a long time for curing.
このような低い硬化性を改善するために、第３
級アミン類、イミダゾール類、有機カルボン酸金
属塩などの通常に使用される硬化促進剤を用いる
場合はそのポツトライフが損なわれるという欠点
がある。 In order to improve such low curability, the third
The use of commonly used curing accelerators such as class amines, imidazoles, organic carboxylic acid metal salts, etc. has the disadvantage that the pot life is impaired.
このようなポツトライフと硬化性の問題を解決
するには、いわゆる潜在性硬化促進剤を使用する
ことが望ましいが、末だ充分満足できる潜在性を
有するものは見い出されていない。 In order to solve such problems with pot life and curability, it is desirable to use a so-called latent curing accelerator, but so far no one has been found that has sufficiently satisfactory latent properties.
そこでこれらに替る方法として、硬化促進剤を
含浸レジンには配合せずに被含浸物であるコイル
の絶縁層に保持させることが従来より行われてい
る。 Therefore, as an alternative method to these methods, it has conventionally been carried out to hold the curing accelerator in the insulating layer of the coil, which is the object to be impregnated, without blending the curing accelerator into the impregnated resin.
このように硬化促進剤をコイル絶縁層に保持さ
せるにはコイルの外周に絶縁層を形成した後に硬
化促進剤の溶液に浸漬し乾燥する方法と、予め硬
化促進剤を保持させた絶縁テープを作製し、これ
をコイル外周に巻回する方法とがあるが、保持さ
せる硬化促進剤の均一性および作業の簡便さで後
者の方が優えている。 In order to retain the curing accelerator in the coil insulating layer in this way, there are two methods: forming an insulating layer around the outer periphery of the coil, then dipping it in a solution of the curing accelerator and drying it, and creating an insulating tape that retains the curing accelerator in advance. However, there is a method of winding this around the outer circumference of a coil, but the latter method is superior in terms of uniformity of the curing accelerator retained and ease of operation.
このようにして絶縁テープに予め保持させる硬
化促進剤には次のようなことが要求される。 The following requirements are required for the curing accelerator that is previously retained on the insulating tape in this way.
(1) 硬化性が優れていること。(1) Excellent curing properties.
(2) レジンの含浸前に行なわれる予備乾燥によつ
て揮散してしまわないこと。(2) It must not volatilize during preliminary drying that is performed before impregnating the resin.
(3) 絶縁テープの巻き付け性が良好なように適度
な柔軟性を有すること。(3) It must have appropriate flexibility so that the insulating tape can be easily wrapped.
上記(1)、(2)の要求を満足するものとして、イミ
ダゾール化合物と有機金属塩との付加生成物を用
いる例があるが、これによつて得られる硬化促進
剤はそのほとんどが固体状のものであり、上記(3)
の要求を満たすものではない。 There is an example of using an addition product of an imidazole compound and an organic metal salt to satisfy the above requirements (1) and (2), but most of the curing accelerators obtained by this are in solid form. (3) above.
does not meet the requirements of
そこで本発明は、前記のような従来法の欠点を
排除するものであり、特徴とするところは、前記
(1)、(2)、(3)の要求を全て満足する硬化促進剤とし
て２−エチル−４−メチルイミダゾールと次式
（ＲはR8〜C10の飽和脂肪鎖）で表わされる第３
級カルボン酸グリシジルエステルとの付加生成物
を保持させた絶縁テープを導体の周囲に巻回して
主絶縁層を形成し予備乾燥を行つた後、その主絶
縁層に酸無水物硬化剤とエポキシ樹脂とからなる
レジンを含浸し、硬化させることにある。 Therefore, the present invention eliminates the drawbacks of the conventional method as described above, and is characterized by
As a curing accelerator that satisfies all the requirements of (1), (2), and (3), 2-ethyl-4-methylimidazole and the following formula (R is a saturated fatty chain of R 8 to C 10 )
A main insulating layer is formed by wrapping an insulating tape containing an addition product with glycidyl ester carboxylic acid and pre-drying the conductor, and then an acid anhydride curing agent and an epoxy resin are applied to the main insulating layer. The process involves impregnating and curing a resin consisting of.
上記硬化促進剤の絶縁層に保持させる量は、エ
ポキシ樹脂と酸無水物とからなる含浸レジン100
部に対し0.5〜3.0部の範囲が望ましい。 The amount of the curing accelerator retained in the insulating layer is 100% of the impregnated resin made of epoxy resin and acid anhydride.
The range of 0.5 to 3.0 parts is desirable.
この理由は、05部以下の場合は充分な硬化促進
能が得られず、３部以上では硬化したエポキシ樹
脂の諸物性を低下させる恐れがあるからである。 The reason for this is that if the amount is less than 0.5 parts, sufficient curing accelerating ability cannot be obtained, and if it is more than 3 parts, there is a risk of deteriorating the physical properties of the cured epoxy resin.
含浸レジンに配合されるエポキシ樹脂および酸
無水物は特に制限されるものではなく、エポキシ
樹脂としては多価フエノールおよび多価アルコー
ルとエピクロルヒドリンから得られるポリグリシ
ジルエーテル、ノボラツク型フエノールとエピク
ロルヒドリンとから得られるエポキシノボラツ
ク、過酸化法で合成されるポリオレフイン系エポ
キシ樹脂、シクロペンタジエンオキシド、シクロ
ヘキセンオキシドあるいはヘキサヒドロフタール
酸などとエピクロルヒドリンとから得られるポリ
グリシジルエステルなどのエポキシ樹脂が単独あ
るいは２種以上を組み合わせて用いられ、また酸
無水物としては無水マレイン酸、無水テトラヒド
ロフタール酸、無水ヘキサヒドロフタール酸、無
水ドデセニルこはく酸、無水メチルエンドメチレ
ンテトラヒドロフタール酸、無水メチルテトラヒ
ドロフタール酸、無水メチルヘキサヒドロフター
ル酸などが用いられる。 The epoxy resin and acid anhydride blended into the impregnated resin are not particularly limited. Epoxy resins include polyglycidyl ether obtained from polyhydric phenol and polyhydric alcohol and epichlorohydrin, and epoxy resin obtained from novolac type phenol and epichlorohydrin. Epoxy resins such as epoxy novolac, polyolefin-based epoxy resins synthesized by peroxidation method, and polyglycidyl esters obtained from cyclopentadiene oxide, cyclohexene oxide, or hexahydrophthalic acid and epichlorohydrin can be used alone or in combination of two or more types. The acid anhydrides include maleic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, dodecenylsuccinic anhydride, methylendomethylenetetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, and methyl anhydride. Hexahydrophthalic acid and the like are used.
以下本発明の実施例によつて具体的に説明す
る。 The present invention will be specifically explained below using examples.
実施例
先ず２−エチル−４−メチルイミダゾールとカ
ージユラＥ〔油化シエルエポキシ(株)製：第３級カ
ルボン酸グリシジルエステル〕の等モル量を反応
容器中で約60℃において反応させ、非常に粘ちよ
うな付加生成物を得、これを接着剤としてガラス
クロス裏打ちの集成マイカテープを作製する。こ
のテープの厚みは0.13mm、接着剤量は6.7％であ
り、JIS C2116によつて柔軟性試験（Ｂ法によ
る）を行なつた結果167ｇとテーピング作業に最
適な柔軟性を示した。Example First, equimolar amounts of 2-ethyl-4-methylimidazole and Cardiura E (manufactured by Yuka Ciel Epoxy Co., Ltd.: tertiary carboxylic acid glycidyl ester) were reacted in a reaction vessel at about 60°C. A viscous addition product is obtained, which is used as an adhesive to prepare a glass cloth-backed laminated mica tape. The thickness of this tape was 0.13 mm, the amount of adhesive was 6.7%, and a flexibility test (according to method B) according to JIS C2116 was conducted, and the result was 167 g, which showed optimal flexibility for taping work.
次に、上記のようにして作成した集成マイカテ
ープを1/2ラツプで３回巻回して主絶縁層を形成
し、さらにポリエステルフイルムテープを1/2ラ
ツプで１回巻回したコイルを150℃で10時間乾燥
した後、DER332（ダウケミカル製エポキシ樹脂）
100部とHN2200〔日立化成工業(株)製酸無水物硬化
剤〕80部からなるレジンを真空加圧含浸し、150
℃で10時間硬化させた絶縁コイルを作製した。 Next, the main insulating layer was formed by winding the assembled mica tape produced as described above three times in a 1/2 wrap, and then a coil made by wrapping the polyester film tape once in a 1/2 wrap at 150°C. After drying for 10 hours with DER332 (Dow Chemical epoxy resin)
A resin consisting of 100 parts and 80 parts of HN2200 [acid anhydride curing agent manufactured by Hitachi Chemical Co., Ltd.] was impregnated with vacuum pressure.
An insulated coil was prepared by curing at ℃ for 10 hours.
一方、これと比較するため、エピコート828お
よび1004〔ともに油化シエルエポキシ(株)製エポキ
シ樹脂〕を４：６で混合したものを接着剤とする
集成マイカテープと上記実施例で使用した含浸レ
ジンに硬化促進剤として0.2部のK61B（セールチ
ムニー社製変成アミン）を加えた含浸レジンを用
いて上記実施例と同様の条件で絶縁コイルを作製
した。 On the other hand, for comparison, we used a laminated mica tape using a 4:6 mixture of Epicoat 828 and 1004 (both epoxy resins manufactured by Yuka Ciel Epoxy Co., Ltd.) as an adhesive, and the impregnated resin used in the above example. An insulated coil was produced under the same conditions as in the above example using an impregnated resin in which 0.2 parts of K61B (modified amine manufactured by Sale Chimney) was added as a curing accelerator.
以上のようにして得られた本発明にかゝる絶縁
コイルと比較例の絶縁コイルの最外層のポリエス
テルフイルムを除去し、誘電正接（tanδ）−温度
特性を測定した結果を第１図に示す。 The outermost polyester film of the insulated coil according to the present invention and the insulated coil of the comparative example obtained as described above was removed, and the dielectric loss tangent (tan δ)-temperature characteristics were measured. The results are shown in Figure 1. .
この図から明らかなように本発明による絶縁コ
イルは、比較例の絶縁コイルとほぼ同等の特性を
示しており、集成マイカテープに保持させる硬化
促進剤が150℃×10時間という予備乾燥によつて
も揮散することなく、含浸レジンを完全に硬化さ
せていることを示している。 As is clear from this figure, the insulated coil according to the present invention exhibits almost the same characteristics as the insulated coil of the comparative example, and the curing accelerator retained in the composite mica tape was pre-dried at 150°C for 10 hours. This shows that the impregnated resin is completely cured without any volatilization.
また本発明実施例で用いた含浸レジンは、硬化
促進剤を配合していないため、その保存時におけ
る粘度上昇は非常に小さく長期間にわたつてのく
り返し使用が可能である。 Further, since the impregnated resin used in the examples of the present invention does not contain a curing accelerator, the increase in viscosity during storage is very small and it can be used repeatedly over a long period of time.
以上述べたように本発明による硬化促進剤を保
持させた絶縁テープを巻回して主絶縁層を形成し
予備乾燥を行なつた後酸無水物とエポキシ樹脂か
らなるレジンを含浸し、硬化させる電気絶縁線輪
の製造方法によれば、作業性の良好な絶縁テープ
によるテーピングが行なえ、硬化促進剤を配合し
ていない含浸レジンは長期間にわたつてくり返し
使用できるとともに優れた特性を有する電気絶縁
線輪を得ることができる。 As described above, the main insulating layer is formed by winding the insulating tape holding the curing accelerator according to the present invention, and after pre-drying, the resin is impregnated with the resin made of acid anhydride and epoxy resin and then cured. According to the manufacturing method of insulated wire, it is possible to perform taping with insulating tape that is easy to work with, and the impregnated resin, which does not contain a curing accelerator, can be used repeatedly over a long period of time, and the electrical insulated wire has excellent characteristics. You can get a ring.
第１図は本発明実施例によるものと比較例との
誘電正接−温度特性図である。
FIG. 1 is a dielectric loss tangent-temperature characteristic diagram of an example according to the present invention and a comparative example.
Claims (1)
ミダゾールと次式 （ＲはC8〜C10の飽和脂肪鎖）で表わされる第３
級カルボン酸グリシジルエステルとの付加生成物
を保持させた絶縁テープを巻回して主絶縁層を形
成し予備乾燥を行なつた後その主絶縁層に配無水
物硬化剤とエポキシ樹脂を主成分とするレジンを
含浸し硬化させることを特徴とする電気絶縁線輪
の製造方法。 ２ 絶縁テープとして集成マイカを使用したこと
を特徴とする特許請求の範囲第１項記載の電気絶
縁線輪の製造方法。[Claims] 1. 2-ethyl-4-methylimidazole and the following formula as a curing accelerator: (R is a C8 - C10 saturated fatty chain)
A main insulating layer is formed by winding an insulating tape holding an addition product with a carboxylic acid glycidyl ester, and after pre-drying, the main insulating layer contains an anhydride curing agent and an epoxy resin as main components. A method for manufacturing an electrically insulated wire wheel, characterized by impregnating it with a resin and curing it. 2. The method for manufacturing an electrically insulating coil according to claim 1, characterized in that laminated mica is used as the insulating tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12023883A JPS6012714A (en) | 1983-07-04 | 1983-07-04 | Manufacturing method of electrically insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12023883A JPS6012714A (en) | 1983-07-04 | 1983-07-04 | Manufacturing method of electrically insulated wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6012714A JPS6012714A (en) | 1985-01-23 |
| JPH0255887B2 true JPH0255887B2 (en) | 1990-11-28 |
Family
ID=14781257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12023883A Granted JPS6012714A (en) | 1983-07-04 | 1983-07-04 | Manufacturing method of electrically insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6012714A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0618546U (en) * | 1992-08-17 | 1994-03-11 | オザキ冷機株式会社 | Nozzle for sealing joints of buildings |
| JP3910134B2 (en) * | 2002-10-30 | 2007-04-25 | ファナック株式会社 | Robot equipment |
-
1983
- 1983-07-04 JP JP12023883A patent/JPS6012714A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6012714A (en) | 1985-01-23 |
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