JPH0610932B2 - Insulated wire - Google Patents
Insulated wireInfo
- Publication number
- JPH0610932B2 JPH0610932B2 JP60102268A JP10226885A JPH0610932B2 JP H0610932 B2 JPH0610932 B2 JP H0610932B2 JP 60102268 A JP60102268 A JP 60102268A JP 10226885 A JP10226885 A JP 10226885A JP H0610932 B2 JPH0610932 B2 JP H0610932B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- copolymer
- fluoroolefin
- vinylidene fluoride
- parts
- 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 - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Organic Insulating Materials (AREA)
- Insulated Conductors (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は二種以上のフツ素樹脂を混合したフツ素エラス
トマー絶縁電線の低温性を改善することを目的とする。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention aims to improve the low temperature properties of a fluorine elastomer insulated wire in which two or more fluorine resins are mixed.
フツ素エラストマーは、優れた耐熱性、耐油性、耐薬品
性を活かして、ガスケツト、パツキング、ホース等の用
途に使用されている。かかる特性から電線被覆材などの
電気絶縁材料としての要求も高い。しかし、従来から用
いられているフツ素エラストマーでは、電気絶縁特性や
機械的強度に劣るといつた種々の欠点があり使用される
には至つていない。近年、特に電気絶縁特性に優れたフ
ツ素エラストマーとして、テトラフルオロエチレン−プ
ロピレン系共重合体が開発された。テトラフルオロエチ
レン−プロピレン系共重合体としては、主成分のテトラ
フルオロエチレンとプロピレンに加え、これらのものと
共重合可能な成分、例えばエチレン、イソブチレン、ア
クリル酸及びそのアルキルエステル、メタクリル酸およ
びそのアルキルエステル、フツ化ビニル、フツ化ビニリ
デン、ヘキサフルオロプロペン、クロロエチルビニルエ
ーテル、クロロトリフルオロエチレン、パーフルオロア
ルキルビニルエーテル等を適当量含有したものでも良
い。所がかかる共重合体を絶縁体として電線等に使用す
る場合、機械的強度が低く、押出被覆後、電線の形状が
保てない等、そのままでは使用出来ないものであつた。
そこで、機械的強度の向上を計るべく、フツ素樹脂との
ブレンドを検討した。フツ素樹脂としてはエチレン−テ
トラフルオロエチレン共重合体、テトラフルオロエチレ
ン−ヘキサフルオロプロピレン共重合体、ポリフツ化ビ
ニリデン、フツ化ビニリデン−フルオロオレフイン共重
合体等を使用した。Fluorine elastomers are used in applications such as gaskets, packing, hoses, etc., because of their excellent heat resistance, oil resistance, and chemical resistance. Due to these characteristics, there are high demands for electric insulating materials such as wire coating materials. However, fluorine elastomers that have been conventionally used have various drawbacks when they are inferior in electrical insulation characteristics and mechanical strength, and have not been used yet. In recent years, a tetrafluoroethylene-propylene-based copolymer has been developed as a fluorine elastomer having particularly excellent electric insulation properties. The tetrafluoroethylene-propylene-based copolymer includes, in addition to the main components tetrafluoroethylene and propylene, components copolymerizable with these, such as ethylene, isobutylene, acrylic acid and its alkyl ester, methacrylic acid and its alkyl. It may contain an appropriate amount of ester, vinyl fluoride, vinylidene fluoride, hexafluoropropene, chloroethyl vinyl ether, chlorotrifluoroethylene, perfluoroalkyl vinyl ether and the like. However, when such a copolymer is used as an insulator for an electric wire or the like, it cannot be used as it is because the mechanical strength is low and the shape of the electric wire cannot be maintained after extrusion coating.
Therefore, in order to improve the mechanical strength, a blend with a fluorine resin was examined. As the fluorine resin, ethylene-tetrafluoroethylene copolymer, tetrafluoroethylene-hexafluoropropylene copolymer, polyvinylidene fluoride, vinylidene fluoride-fluoroolefin copolymer and the like were used.
しかるに、これらのフツ素樹脂とのブレンドにより、機
械的強度の改善は計れるものの、低温性が悪化し通常の
絶縁電線に要求される−１０℃の低温試験にももたず、
使用できないものであつた。However, although the mechanical strength can be improved by blending with these fluorine-containing resins, the low-temperature property is deteriorated, and the low-temperature test of -10 ° C required for ordinary insulated wires does not cause the mechanical strength.
It was something that could not be used.
本発明は、この低温性を改善すべく、鋭意検討した結果
到達したものである。The present invention has been achieved as a result of extensive studies aimed at improving this low temperature property.
本発明は、テトラフルオロエチレン−プロピレン系共重
合体100重量部にフツ化ビニリデン−フルオロオレフイ
ン共重合体を１重量部以上100重量部未満と架橋促進剤
を添加した混合物を電子線照射により架橋せしめたフツ
素エラストマー樹脂組成物を絶縁層とした絶縁電線であ
る。本発明において用いられるフツ化ビニリデン−フル
オロオレフイン共重合体は、フルオロオレフインが１〜
２０モル％のものである。この様なフルオロオレフイン
とては六フツ化プロピレン又は四フツ化エチレンが加工
性等の点で好ましい。The present invention is to crosslink a mixture of 100 parts by weight of tetrafluoroethylene-propylene-based copolymer with 1 part by weight or more and less than 100 parts by weight of vinylidene fluoride-fluoroolefin copolymer and a crosslinking accelerator by electron beam irradiation. An insulated electric wire comprising a fluorine elastomer resin composition as an insulating layer. The vinylidene fluoride-fluoroolefin copolymer used in the present invention has a fluoroolefin of 1 to 1
It is 20 mol%. As such a fluoroolefin, propylene hexafluoride or ethylene tetrafluoride is preferable in terms of processability.
フツ化ビニリデン−フルオロオレフイン共重合体が、テ
トラフルオロエチレン−プロピレン系共重合体100重量
部に対して、１重量部以上である理由は、１重量部未満
では、機械的強度の改善効果がほとんど見られないから
である。一方、フツ化ビニリデン−フルオロオレフイン
共重合体の添加量が100重量部未満である理由は、100重
量部以上の添加では電子線照射による低温性改善の効果
が表われないが、むしろ悪くなる為である。上記共重合
体中のフルオロオレフインが１〜２０モル％であるの
は、電線の絶縁体としての必要な一定の機械的強度を得
るために、共重合体が結晶性ポリマーとしての性質を必
要とするからである。The reason why the vinylidene fluoride-fluoroolefin copolymer is 1 part by weight or more with respect to 100 parts by weight of the tetrafluoroethylene-propylene-based copolymer is that if less than 1 part by weight, the effect of improving mechanical strength is almost zero. Because I can't see it. On the other hand, the reason why the amount of the vinylidene fluoride-fluoroolefin copolymer added is less than 100 parts by weight is that the addition of 100 parts by weight or more does not show the effect of improving the low temperature property by electron beam irradiation, but rather deteriorates it. Is. The content of fluoroolefin in the above copolymer is 1 to 20 mol% because the copolymer must have a property as a crystalline polymer in order to obtain a certain mechanical strength required as an electric wire insulator. Because it does.
以下に具体例をもつて本発明について説明する。The present invention will be described below with reference to specific examples.
実施例１〜４ 第１表に示した樹脂組成物を外径0.8mmの錫メツキ銅線
に、0.8mm厚で押出被覆し、外径2.4mmの絶縁電線を作成
した。該絶縁電線に２ＭｅＶの電子線加速器で１０Ｍｒ
ａｄ電子線を照射し、絶縁層の低温脆化試験を行ない、
試験試料が破壊しない最低温度を測定した。照射した試
料及び比較の為に未照射の低温脆化試験の結果を第１表
に示した。Examples 1 to 4 A resin composition shown in Table 1 was extrusion-coated on a tin-plated copper wire having an outer diameter of 0.8 mm to a thickness of 0.8 mm to produce an insulated electric wire having an outer diameter of 2.4 mm. 10Mr to the insulated wire with a 2MeV electron beam accelerator
We irradiate an ad electron beam and perform a low temperature embrittlement test of the insulating layer,
The lowest temperature at which the test sample did not break was measured. Table 1 shows the results of the irradiated sample and the unirradiated low temperature embrittlement test for comparison.
比較例１〜５ 第１表に示したテトラフルオロエチレン−プロピレン系
共重合体及びフツ化ビニリデン−フルオロオレフイン共
重合体をそれぞれ単独で、又テトラフルオロエチレン−
プロピレン系共重合体100重量部に対し、フツ化ビニリ
デン−フルオロオレフイン共重合体を100重量部以上添
加した樹脂組成物から成る絶縁電線を作成し、実施例と
同様にして低温脆化試験を行ない、その結果を第１表に
示した。Comparative Examples 1 to 5 The tetrafluoroethylene-propylene-based copolymers and vinylidene fluoride-fluoroolefin copolymers shown in Table 1 were used alone, or tetrafluoroethylene-
To 100 parts by weight of propylene-based copolymer, an insulated wire made of a resin composition containing 100 parts by weight or more of vinylidene fluoride-fluoroolefin copolymer was prepared, and a low temperature embrittlement test was carried out in the same manner as in Examples. The results are shown in Table 1.
第１表に示した様に、テトラフルオロエチレン−プロピ
レン系共重合体、フツ化ビニリデン−フルオロオレフイ
ン共重合体各々単独及びテトラフルオロエチレン−プロ
ピレン系共重合体100重量部に対し、フツ化ビニリデン
−フルオロオレフイン共重合体を100重量部以上添加し
た樹脂組成物から成る絶縁電線では、電子線照射して
も、低温性がむしろ悪くなるが、変化が見られなかつ
た。一方、本発明になる樹脂組成物から成る絶縁電線で
は、いずれも電子線照射により、低温性の改善が見ら
れ、−１０℃での使用が可能となつた。As shown in Table 1, vinylidene fluoride-based copolymer, vinylidene fluoride-fluoroolefin copolymer alone and 100 parts by weight of tetrafluoroethylene-propylene-based copolymer were added to vinylidene fluoride- With an insulated wire made of a resin composition containing 100 parts by weight or more of a fluoroolefin copolymer, the low-temperature property was rather deteriorated by electron beam irradiation, but no change was observed. On the other hand, all of the insulated wires made of the resin composition according to the present invention showed improvement in low temperature property by electron beam irradiation, and could be used at -10 ° C.
Claims (2)
重合体100重量部に対しフルオロオレフインが１〜２０
モル％含有するフツ化ビニリデン−フルオロオレフイン
共重合体１重量部以上100重量部未満および架橋促進剤
を配合してなり電子線照射により架橋せしめたフツ素エ
ラストマー樹脂組成物を絶縁層とした絶縁電線。1. Fluoroolefins in an amount of 1 to 20 relative to 100 parts by weight of a tetrafluoroethylene-propylene copolymer.
Insulated electric wire having a fluorine elastomer resin composition containing 1% by weight or more and less than 100 parts by weight of a vinylidene fluoride-fluoroolefin copolymer of 1 mol% and a crosslinking accelerator, and crosslinked by electron beam irradiation as an insulating layer .
重合体におけるフルオロオレフインが、六フツ化プロピ
レン又は四フツ化エチレンである特許請求の範囲第１項
記載の絶縁電線。2. The insulated wire according to claim 1, wherein the fluoroolefin in the vinylidene fluoride-fluoroolefin copolymer is propylene hexafluoride or ethylene tetrafluoride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60102268A JPH0610932B2 (en) | 1985-05-14 | 1985-05-14 | Insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60102268A JPH0610932B2 (en) | 1985-05-14 | 1985-05-14 | Insulated wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61260504A JPS61260504A (en) | 1986-11-18 |
| JPH0610932B2 true JPH0610932B2 (en) | 1994-02-09 |
Family
ID=14322847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60102268A Expired - Fee Related JPH0610932B2 (en) | 1985-05-14 | 1985-05-14 | Insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0610932B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2654666B2 (en) * | 1988-06-01 | 1997-09-17 | 三菱電線工業株式会社 | Heat resistant insulating composition |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52134657A (en) * | 1976-05-04 | 1977-11-11 | Asahi Glass Co Ltd | Fluorine-coaining elastomer compositions with excellent moldability |
-
1985
- 1985-05-14 JP JP60102268A patent/JPH0610932B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61260504A (en) | 1986-11-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |