JPH0726241A - Adhesive resin composition and self-adhesive insulated wire - Google Patents
Adhesive resin composition and self-adhesive insulated wireInfo
- Publication number
- JPH0726241A JPH0726241A JP5175701A JP17570193A JPH0726241A JP H0726241 A JPH0726241 A JP H0726241A JP 5175701 A JP5175701 A JP 5175701A JP 17570193 A JP17570193 A JP 17570193A JP H0726241 A JPH0726241 A JP H0726241A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- self
- weight
- parts
- resin
- 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.)
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- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Insulating Of Coils (AREA)
- Insulated Conductors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、自己接着層を有する
自己接着性絶縁電線およびこの自己接着層を構成する接
着性樹脂組成物に関する。TECHNICAL FIELD The present invention relates to a self-adhesive insulated wire having a self-adhesive layer and an adhesive resin composition constituting the self-adhesive layer.
【０００２】[0002]
【従来の技術】従来より、絶縁層上に自己接着層を設け
た自己接着性絶縁電線（ＳＢＷ）が知られている。この
ものは巻線後、単に加熱することにより自己接着層が溶
融し、巻線間が接着されるようになっており、コイルの
固化が容易に行える特長がある。このような自己接着性
絶縁電線の自己接着層を構成する接着性樹脂組成物とし
て、フェノキシ樹脂１００重量部に、ブチル化メラミン
樹脂、メチル化メラミン樹脂などのアルキルエーテル化
メラミン樹脂、安定化イソシアネート、酸無水物などを
３０〜６０重量部配合したものがある。2. Description of the Related Art Conventionally, a self-adhesive insulated wire (SBW) having a self-adhesive layer provided on an insulating layer has been known. This one is characterized in that the self-adhesive layer is melted by simply heating after winding, and the windings are bonded to each other, so that the coil can be easily solidified. As an adhesive resin composition forming the self-adhesive layer of such a self-adhesive insulated wire, 100 parts by weight of a phenoxy resin, an alkyl etherified melamine resin such as a butylated melamine resin and a methylated melamine resin, a stabilized isocyanate, Some include 30 to 60 parts by weight of acid anhydride and the like.
【０００３】このような接着性樹脂組成物をナフサ、キ
シレンなどの溶剤に溶解してワニスとし、このワニスを
絶縁層上に塗布、焼付して、Ｂ−ステージ状態（半硬化
状態）とすることで、自己接着層が形成される。Dissolving such an adhesive resin composition in a solvent such as naphtha or xylene to form a varnish, and applying this varnish on an insulating layer and baking it to obtain a B-stage state (semi-cured state). Then, a self-adhesive layer is formed.
【０００４】ところで、このような自己接着性絶縁電線
にあっては、自己接着層による巻線間の接着力が高温に
なると低下する不都合があった。すなわち、上述の組成
の自己接着性樹脂組成物からなるものでは、１２０℃以
上の温度では接着力が急激に低下する特性を有し、高温
下での接着力が要求される用途、例えばＳＦ6 ガス絶縁
トランスの巻線には不向きであった。By the way, in such a self-adhesive insulated wire, there is a disadvantage that the adhesive force between the windings by the self-adhesive layer is lowered when the temperature becomes high. That is, the self-adhesive resin composition having the above-mentioned composition has a characteristic that the adhesive force sharply decreases at a temperature of 120 ° C. or higher, and is used in applications requiring adhesive force at high temperatures, for example, SF 6 It was not suitable for the winding of gas insulated transformer.
【０００５】[0005]
【発明が解決しようとする課題】よって、この発明にお
ける課題は、１２０℃以上の高温においても高い接着力
を保持することのできる自己接着性絶縁電線およびこれ
の自己接着層を構成する接着性樹脂組成物を得ることに
ある。SUMMARY OF THE INVENTION Therefore, the object of the present invention is to provide a self-adhesive insulated wire capable of retaining high adhesive strength even at a high temperature of 120 ° C. or more, and an adhesive resin constituting the self-adhesive layer thereof. To obtain the composition.
【０００６】[0006]
【課題を解決するための手段】かかる課題は、フェノキ
シ樹脂１００重量部、アルキルエーテル化メラミン樹脂
３０〜６０重量部、ノボラック型エポキシ樹脂１０〜６
０重量部、アミン類０．０５〜１８重量部からなる接着
性樹脂組成物によって解決される。This problem is solved by 100 parts by weight of a phenoxy resin, 30 to 60 parts by weight of an alkyl etherified melamine resin, and 10 to 6 novolac type epoxy resins.
It is solved by an adhesive resin composition consisting of 0 parts by weight and 0.05 to 18 parts by weight of amines.
【０００７】以下、この発明を詳しく説明する。この発
明の接着性樹脂組成物のベースポリマーとなるフェノキ
シ樹脂としては、特に限定されず、分子量１万以上の市
販のものが使用される。また、このフェノキシ樹脂を架
橋させるアルキルエーテル化メラミン樹脂としては、メ
チル化メラミン樹脂、ブチル化メラミン樹脂などが用い
られるが、硬化組成物の可撓性の点からは、ブチル化メ
ラミン樹脂が好ましい。このアルキルエーテル化メラミ
ン樹脂の配合量は、フェノキシ樹脂１００重量部に対し
て１０〜６０重量部の範囲とされる。この配合量が１０
重量部未満では、硬化組成物の耐熱性が低下し、６０重
量部を越えると同じく可撓性が低下して好ましくない。The present invention will be described in detail below. The phenoxy resin which is the base polymer of the adhesive resin composition of the present invention is not particularly limited, and a commercially available phenoxy resin having a molecular weight of 10,000 or more is used. Further, as the alkyl etherified melamine resin for crosslinking the phenoxy resin, a methylated melamine resin, a butylated melamine resin or the like is used, but the butylated melamine resin is preferable from the viewpoint of flexibility of the cured composition. The compounding amount of the alkyl etherified melamine resin is in the range of 10 to 60 parts by weight with respect to 100 parts by weight of the phenoxy resin. This blend amount is 10
If it is less than 60 parts by weight, the heat resistance of the cured composition decreases, and if it exceeds 60 parts by weight, the flexibility also deteriorates, which is not preferable.
【０００８】また、耐熱性向上のために配合されるノボ
ラック型エポキシ樹脂としては、特に限定されずノボラ
ックとエピクロルヒドリンとから合成されたエポキシ当
量１８０〜２６０のノボラックポリクリシジルエーテル
が好適である。具体的なものとしては、「エピコート１
５２」（商品名；油化シエルエポキシ社製）などがあ
る。このノボラック型エポキシ樹脂の配合量は、フェノ
キシ樹脂１００重量部に対して１０〜６０重量部の範囲
とされる。この配合量が１０重量部未満では、耐熱性向
上効果が得られず、６０重量部を越えると可撓性が低下
し、不都合となる。The novolac type epoxy resin blended for improving the heat resistance is not particularly limited, and a novolac polychrysidyl ether having an epoxy equivalent of 180 to 260 synthesized from novolac and epichlorohydrin is suitable. Specifically, "Epicort 1
52 "(trade name; manufactured by Yuka Shell Epoxy Co., Ltd.) and the like. The compounding amount of the novolac type epoxy resin is in the range of 10 to 60 parts by weight with respect to 100 parts by weight of the phenoxy resin. If the amount is less than 10 parts by weight, the heat resistance improving effect cannot be obtained, and if it exceeds 60 parts by weight, the flexibility is lowered, which is inconvenient.
【０００９】また、上記ノボラック型エポキシ樹脂の硬
化剤であるアミン類としては、ジシアンジアミド、３級
アミン塩、アミンイミドなどの潜在性硬化剤が樹脂組成
物のポットライフが長くなって好ましいが、これ以外の
２級アミン、３級アミンも使用できる。このアミン類の
配合量は、エポキシ樹脂１００重量部に対して０．５〜
３０重量部、ベースポリマーのフェノキシ樹脂１００重
量部に対して換算すると０．０５〜１８重量部の範囲と
される。この配合量がエポキシ樹脂１００重量部に対し
て０．５重量部未満であると、エポキシ樹脂の硬化が進
行せず、３０重量部を越えても硬化度合は頭打ちとな
り、不経済でもある。As the amines which are the curing agents for the above-mentioned novolac type epoxy resins, latent curing agents such as dicyandiamide, tertiary amine salts and amine imides are preferable because the pot life of the resin composition is long, but other than this. Secondary amines and tertiary amines can also be used. The amount of this amine compounded is 0.5 to 100 parts by weight of the epoxy resin.
When converted to 30 parts by weight, and 100 parts by weight of the phenoxy resin as the base polymer, the range is 0.05 to 18 parts by weight. If the blending amount is less than 0.5 parts by weight with respect to 100 parts by weight of the epoxy resin, the curing of the epoxy resin will not proceed, and even if it exceeds 30 parts by weight, the degree of curing will reach the ceiling, which is uneconomical.
【００１０】このような配合組成の接着性樹脂組成物
は、シクロヘキサノン、ＤＭＦ、ＭＥＫなどの有機溶剤
または、その有機溶剤とソルベントナフサ、キシレン、
トルエン、ミネラルスピリットなどの有機溶剤の混合物
に溶解し、ワニスとされる。このワニスの固形分（樹脂
分）は２０〜４０重量％程度とされる。このワニスを絶
縁電線の絶縁層上に塗布、焼付して、自己接着層を形成
する。絶縁層を構成する樹脂としては、特に限定されな
いが、耐熱性の良好なものが好ましく、例えばポリエス
テルイミド、ポリアミドイミド、ポリエステルアミド、
ポリヒダントインなどが挙げられる。また、絶縁層の厚
さは、約１０〜５０μｍ程度の範囲とされるが、この範
囲に限定されるものではない。The adhesive resin composition having such a composition has an organic solvent such as cyclohexanone, DMF, MEK or the organic solvent and solvent naphtha, xylene,
It is dissolved in a mixture of organic solvents such as toluene and mineral spirits to form a varnish. The solid content (resin content) of this varnish is about 20 to 40% by weight. This varnish is applied on the insulating layer of the insulated wire and baked to form a self-adhesive layer. The resin constituting the insulating layer is not particularly limited, but those having good heat resistance are preferable, for example, polyester imide, polyamide imide, polyester amide,
Examples include polyhydantoin. The thickness of the insulating layer is in the range of approximately 10 to 50 μm, but is not limited to this range.
【００１１】上記ワニスの塗布、焼付け条件は、通常の
自己接着層の形成条件と同一でよく、例えば炉温３５０
〜４００℃、線速５０〜１００ｍ／分程度でよい。この
ワニスの塗布、焼付けによって、自己接着層が得られる
が、この自己接着層の厚みは５〜３０μｍ程度とされる
が、この範囲に限定されるものではない。The coating and baking conditions of the varnish may be the same as the conditions for forming a normal self-adhesive layer, for example, a furnace temperature of 350.
˜400 ° C., linear velocity of 50˜100 m / min. A self-adhesive layer is obtained by applying and baking the varnish, and the thickness of the self-adhesive layer is about 5 to 30 μm, but is not limited to this range.
【００１２】このような自己接着性絶縁電線にあって
は、巻線間の接着力が高温、特に１２０℃から１４０℃
においても低下せず、その接着耐熱性が極めて優れたも
のとなる。従来のフェノキシ樹脂系接着性樹脂組成物を
用いたものでは、巻線間を接着するための加熱温度（以
下、接着温度と言う。）が１２０℃であれば、接着後に
接着温度（１２０℃）以上に加熱されると急激に接着力
が低下する傾向があったが、この発明のものではこのよ
うな不都合はなく、接着温度が１２０℃であっても、１
３０〜１４０℃の温度域においても十分な接着力を保持
するものとなる。In such a self-adhesive insulated wire, the adhesive force between the windings is high, especially from 120 ° C to 140 ° C.
The adhesive heat resistance is extremely excellent. In the case of using the conventional phenoxy resin-based adhesive resin composition, if the heating temperature for bonding the windings (hereinafter referred to as the bonding temperature) is 120 ° C., the bonding temperature after bonding (120 ° C.) When heated above, there was a tendency for the adhesive strength to drop sharply. However, with the present invention, there is no such inconvenience, and even if the adhesive temperature is 120 ° C., 1
Even in the temperature range of 30 to 140 ° C., sufficient adhesive force is maintained.
【００１３】以下、具体例を示して、この発明の作用効
果を明確にする。 （実施例１）外径０．５ｍｍの導体上にポリエステルイ
ミドワニスを塗布、焼付して厚さ３０μｍの絶縁層を形
成して絶縁電線を製造した。この絶縁電線の絶縁層上
に、表１に示す配合組成の接着性樹脂組成物をシクロヘ
キサノンに固形分３０重量％となるように溶解したワニ
スを塗布、焼付して厚さ１５μｍの自己接着層を形成し
て自己接着性絶縁電線とした。Hereinafter, the working effects of the present invention will be clarified by showing concrete examples. (Example 1) Polyesterimide varnish was applied on a conductor having an outer diameter of 0.5 mm and baked to form an insulating layer having a thickness of 30 µm to manufacture an insulated wire. On the insulating layer of this insulated wire, a varnish obtained by dissolving the adhesive resin composition having the composition shown in Table 1 in cyclohexanone to a solid content of 30% by weight was applied and baked to form a self-adhesive layer having a thickness of 15 μm. It was formed into a self-adhesive insulated wire.
【００１４】この自己接着性絶縁電線を外径４．９ｍｍ
のマンドレルに密着巻きで巻き付け、内径５ｍｍ、長さ
４ｃｍのヘリカルコイルを作成し、ついでこのヘリカル
コイルの一端部に７０ｇの荷重をかけつつ、１２０℃で
４８時間加熱して、自己接着層を溶融し、ヘリカルコイ
ルの各巻線間を接着した。この接着ヘリカルコイルをス
パン間距離３ｃｍで保持し、スパン間の中心に折り曲げ
荷重を印加（印加速度２０ｍｍ／分）し、接着ヘリカル
コイルが折れた時の荷重を各温度において測定して接着
力を評価した。また、上記自己接着性絶縁電線を常温で
自己径巻きで巻回し、自己接着層にクラックが発生する
か否かで可撓性を評価した。結果を表１に併せて示す。This self-adhesive insulated wire has an outer diameter of 4.9 mm.
Wound tightly around the mandrel of No. 3 to make a helical coil with an inner diameter of 5 mm and a length of 4 cm. Then, heat the self-adhesive layer at 120 ° C for 48 hours while applying a load of 70 g to one end of this helical coil. Then, the windings of the helical coil were bonded together. This adhesive helical coil is held at a span distance of 3 cm, a bending load is applied to the center of the span (applying speed 20 mm / min), and the load when the adhesive helical coil is broken is measured at each temperature to determine the adhesive force. evaluated. Further, the self-adhesive insulated electric wire was wound at a normal temperature by self-winding, and flexibility was evaluated by whether or not cracks were generated in the self-adhesive layer. The results are also shown in Table 1.
【００１５】[0015]
【表１】 [Table 1]
【００１６】表１において、接着力が５ｋｇ以上を◎、
３〜５ｋｇを○、２〜３ｋｇを△、１ｋｇ以下を×とし
た。また、可撓性については、クラックが発生しないも
のを○、発生しないがクレージングが生じたものを△、
クラックが発生したものを×として表示した。さらに配
合比は、すべて重量部である。In Table 1, when the adhesive force is 5 kg or more, ◎,
3 to 5 kg was designated as ◯, 2 to 3 kg as Δ, and 1 kg or less as x. As for the flexibility, ○ means that no crack is generated, and Δ means that crazing occurs but does not occur.
Those in which cracks were generated were shown as x. Furthermore, the compounding ratios are all parts by weight.
【００１７】（実施例２）表２に示す配合組成の接着性
樹脂組成物を用いて、実施例１と同様にして自己接着性
絶縁電線を製造し、さらに同様の接着ヘリカルコイルを
作成して、接着力と可撓性を測定した。接着条件は、１
２０℃、２４時間と実施例１と同一である。結果を表２
に併せて示す。(Example 2) A self-adhesive insulated wire was produced in the same manner as in Example 1 using the adhesive resin composition having the composition shown in Table 2, and the same adhesive helical coil was prepared. , Adhesive strength and flexibility were measured. Adhesion condition is 1
Same as Example 1 at 20 ° C. for 24 hours. The results are shown in Table 2.
Are also shown.
【００１８】[0018]
【表２】 [Table 2]
【００１９】（従来例１）表３に示す配合組成の従来の
接着性樹脂組成物を用いて、実施例１と同様にして接着
ヘリカルコイルを作成し、その接着力と可撓性を測定し
た。接着条件は、実施例１と同一である。結果を表３に
併せて示す。(Conventional Example 1) An adhesive helical coil was prepared in the same manner as in Example 1 using the conventional adhesive resin composition having the composition shown in Table 3, and its adhesive force and flexibility were measured. . The bonding conditions are the same as in Example 1. The results are also shown in Table 3.
【００２０】[0020]
【表３】 [Table 3]
【００２１】（比較例）表４に示す配合組成の接着性樹
脂組成物を用いて、実施例１と同様にして接着ヘリカル
コイルを作成し、その接着力と可撓性を測定した。接着
条件は、実施例１と同一である。結果を表３に併せて示
す。Comparative Example An adhesive helical coil was prepared in the same manner as in Example 1 using the adhesive resin composition having the composition shown in Table 4, and its adhesive force and flexibility were measured. The bonding conditions are the same as in Example 1. The results are also shown in Table 3.
【００２２】[0022]
【表４】 [Table 4]
【００２３】表１ないし表４の結果から明らかなよう
に、種々の種類のエポキシ樹脂でも、ノボラック型エポ
キシ樹脂をフェノキシ樹脂とアルキルエーテル化メラミ
ン樹脂との混合系に併用することで、高温時においても
高い接着力が得られるとともに、自己接着層の可撓性も
良好であることがわかる。また、ノボラック型エポキシ
樹脂の配合量がフェノキシ樹脂１００重量部に対して１
０〜６０重量部の範囲が好適であり、硬化剤のアミン類
はノボラック型エポキシ樹脂１００重量部に対して０．
５〜３０重量部配合することが好ましいことがわかる。As is clear from the results of Tables 1 to 4, even in various kinds of epoxy resins, by using the novolac type epoxy resin in combination with the mixed system of the phenoxy resin and the alkyl etherified melamine resin, at high temperature. It can be seen that a high adhesive strength is obtained and the flexibility of the self-adhesive layer is good. Further, the compounding amount of the novolac type epoxy resin is 1 with respect to 100 parts by weight of the phenoxy resin.
The range of 0 to 60 parts by weight is suitable, and the amines of the curing agent are 0.1 to 100 parts by weight of the novolac type epoxy resin.
It is understood that it is preferable to add 5 to 30 parts by weight.
【００２４】[0024]
【発明の効果】以上説明したように、この発明によれ
ば、１２０℃から１４０℃の高温領域においても十分に
高い接着力を発揮する自己接着性絶縁電線が得られる。
また、比較的低い接着温度で接着しても高温域まで十分
な接着力を示すので、従来の接着条件あるいは装置をそ
のまま利用できる。このため、使用温度が高温となるＳ
Ｆ 6 ガス絶縁トランス用巻線などに極めて有用であるな
どの効果が得られる。As described above, according to the present invention.
For example, even in the high temperature range of 120 ℃ to 140 ℃
It is possible to obtain a self-adhesive insulated wire that exhibits high adhesive strength.
Also, even if it is bonded at a relatively low bonding temperature, it is sufficient up to the high temperature range.
Since it exhibits excellent adhesive strength, conventional adhesive conditions or equipment
Can be used as is. Therefore, the operating temperature becomes high S
F 6It is extremely useful for gas insulated transformer windings, etc.
Which effect can be obtained.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｈ０１Ｆ 41/12 Ｚ Ｃ０８Ｌ 71:00 (72)発明者 山澤 照夫 東京都江東区木場１丁目５番１号 株式会 社フジクラ内 (72)発明者 小池 三千雄 東京都江東区木場１丁目５番１号 株式会 社フジクラ内─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location // H01F 41/12 Z C08L 71:00 (72) Inventor Teruo Yamazawa 1 Kiba, Koto-ku, Tokyo 5-1 Fujikura Ltd. (72) Inventor Mitsuo Koike 1-1-5 Kiba, Koto-ku, Tokyo Inside Fujikura Ltd.
Claims (2)
エーテル化メラミン樹脂３０〜６０重量部、ノボラック
型エポキシ樹脂１０〜６０重量部、アミン類０．０５〜
１８重量部からなる接着性樹脂組成物。1. A phenoxy resin of 100 parts by weight, an alkyl etherified melamine resin of 30 to 60 parts by weight, a novolac type epoxy resin of 10 to 60 parts by weight, and an amine of 0.05 to.
An adhesive resin composition comprising 18 parts by weight.
る自己接着層を有する自己接着性絶縁電線。2. A self-adhesive insulated electric wire having a self-adhesive layer comprising the adhesive resin composition according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5175701A JPH0726241A (en) | 1993-07-15 | 1993-07-15 | Adhesive resin composition and self-adhesive insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5175701A JPH0726241A (en) | 1993-07-15 | 1993-07-15 | Adhesive resin composition and self-adhesive insulated wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0726241A true JPH0726241A (en) | 1995-01-27 |
Family
ID=16000740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5175701A Pending JPH0726241A (en) | 1993-07-15 | 1993-07-15 | Adhesive resin composition and self-adhesive insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0726241A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2022024207A1 (en) * | 2020-07-28 | 2022-02-03 | ||
| CN115197634A (en) * | 2022-08-05 | 2022-10-18 | 金杯电工电磁线有限公司 | High-temperature self-adhesive paint and preparation method thereof |
-
1993
- 1993-07-15 JP JP5175701A patent/JPH0726241A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2022024207A1 (en) * | 2020-07-28 | 2022-02-03 | ||
| CN115197634A (en) * | 2022-08-05 | 2022-10-18 | 金杯电工电磁线有限公司 | High-temperature self-adhesive paint and preparation method thereof |
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