JPH03133007A - Heat-resistant insulated wire - Google Patents
Heat-resistant insulated wireInfo
- Publication number
- JPH03133007A JPH03133007A JP27007489A JP27007489A JPH03133007A JP H03133007 A JPH03133007 A JP H03133007A JP 27007489 A JP27007489 A JP 27007489A JP 27007489 A JP27007489 A JP 27007489A JP H03133007 A JPH03133007 A JP H03133007A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- heat
- insulated wire
- tetrafluoroethylene
- composition
- 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
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 229920001971 elastomer Polymers 0.000 claims abstract description 17
- 239000000806 elastomer Substances 0.000 claims abstract description 15
- 229920006172 Tetrafluoroethylene propylene Polymers 0.000 claims abstract description 13
- 239000011247 coating layer Substances 0.000 claims abstract description 12
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052731 fluorine Inorganic materials 0.000 claims description 5
- 239000011737 fluorine Substances 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 abstract description 14
- 230000032683 aging Effects 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 6
- 230000007423 decrease Effects 0.000 abstract description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 238000004132 cross linking Methods 0.000 description 7
- 239000004020 conductor Substances 0.000 description 6
- 238000010894 electron beam technology Methods 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 4
- -1 isobutyne Chemical compound 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- PPQREHKVAOVYBT-UHFFFAOYSA-H dialuminum;tricarbonate Chemical compound [Al+3].[Al+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O PPQREHKVAOVYBT-UHFFFAOYSA-H 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 1
- BJELTSYBAHKXRW-UHFFFAOYSA-N 2,4,6-triallyloxy-1,3,5-triazine Chemical compound C=CCOC1=NC(OCC=C)=NC(OCC=C)=N1 BJELTSYBAHKXRW-UHFFFAOYSA-N 0.000 description 1
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 229940118662 aluminum carbonate Drugs 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical compound FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- MHSKRLJMQQNJNC-UHFFFAOYSA-N terephthalamide Chemical compound NC(=O)C1=CC=C(C(N)=O)C=C1 MHSKRLJMQQNJNC-UHFFFAOYSA-N 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- GRPURDFRFHUDSP-UHFFFAOYSA-N tris(prop-2-enyl) benzene-1,2,4-tricarboxylate Chemical compound C=CCOC(=O)C1=CC=C(C(=O)OCC=C)C(C(=O)OCC=C)=C1 GRPURDFRFHUDSP-UHFFFAOYSA-N 0.000 description 1
- XHGIFBQQEGRTPB-UHFFFAOYSA-N tris(prop-2-enyl) phosphate Chemical compound C=CCOP(=O)(OCC=C)OCC=C XHGIFBQQEGRTPB-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は耐熱性絶縁電線に関し、さらに詳しくは、耐熱
性、加工性、耐油性、耐薬品性に優れた安価な耐熱性絶
縁電線に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a heat-resistant insulated wire, and more particularly to an inexpensive heat-resistant insulated wire that has excellent heat resistance, workability, oil resistance, and chemical resistance.
（従来技術）
フッ素系エラストマーは耐熱性、電気絶縁性、耐熱性、
耐油性、耐薬品性、難燃性に優れており、電子レンジな
と耐熱部を要する電子機器用電線材料、ヒータ用コート
の絶縁材料などに用いられている。(Conventional technology) Fluorine-based elastomers have heat resistance, electrical insulation, heat resistance,
It has excellent oil resistance, chemical resistance, and flame retardancy, and is used as an electric wire material for electronic devices that require heat-resistant parts such as microwave ovens, and as an insulating material for heater coats.
フッ素系エラストマーの中でもテトラフルオロエチレン
−プロピレン系共重合体は安価である。Among fluorine-based elastomers, tetrafluoroethylene-propylene copolymers are inexpensive.
現在、このテトラフルオロエチレン−プロピレン系共重
合体を電線、ケーブルの絶縁被覆材料やシース材料に適
用する場合は、押出し性から数平均分子量が９万以上の
ものを焼成して得られた数平均分子量が３万から７万の
範囲のものが用いられている。Currently, when applying this tetrafluoroethylene-propylene copolymer to insulation coating materials and sheath materials for electric wires and cables, the number average molecular weight obtained by firing a material with a number average molecular weight of 90,000 or more is required for extrudability. Those with a molecular weight in the range of 30,000 to 70,000 are used.
（発明が解決しようとする課題）
しかし、数平均分子量が３万〜７万のテトラフルオロエ
チレン−プロピレン系共重合体を電線被覆材として用い
た場合、この共重合体単独では粘度が小さく柔らかいた
め、偏心やつふれが生し高品質の電線が得られない。ま
た数平均分子量が９万以上の共重合体を単独で使用して
押出すと押出し外観が著しく悪くなる。(Problem to be solved by the invention) However, when a tetrafluoroethylene-propylene copolymer with a number average molecular weight of 30,000 to 70,000 is used as a wire coating material, this copolymer alone has a low viscosity and is soft. , eccentricity and sagging occur, making it impossible to obtain high-quality wires. Furthermore, if a copolymer having a number average molecular weight of 90,000 or more is used alone for extrusion, the extruded appearance will be extremely poor.
そこで、テトラフルオロエチレン−エチレン共重合体や
ポリフッ化ビニリデンなどを数平均分子量３万〜７万の
テトラフルオロエチレン−プロピレン系共重合体に混合
する方法がとられているが、これらを混合して被覆材と
した電線は、老化特性の低下、被覆層外観の低下、加工
歪の増大をもたらす。また、材料混練時に高温を必要と
するため、架橋助剤の揮発、又それによる焼けが生ずる
。Therefore, a method of mixing tetrafluoroethylene-ethylene copolymer, polyvinylidene fluoride, etc. with a tetrafluoroethylene-propylene copolymer having a number average molecular weight of 30,000 to 70,000 has been adopted. An electric wire coated with a coated material causes a decrease in aging characteristics, a decrease in the appearance of the coat layer, and an increase in processing strain. Furthermore, since high temperatures are required during material kneading, the crosslinking aid volatilizes and burns occur as a result.
本発明の目的は、かかる上記問題点を解決し、耐熱性、
老化特性、加工性、耐油性、耐薬品性に優れた安価な耐
熱性絶縁電線を提供することにある。The purpose of the present invention is to solve the above-mentioned problems and improve heat resistance,
The purpose of the present invention is to provide an inexpensive heat-resistant insulated wire with excellent aging characteristics, processability, oil resistance, and chemical resistance.
（課題を解決するための手段）
上記の目的を達成するために、本発明においては、導線
の外周に設けるフッ素系エラストマーからなる被覆層が
、数平均分子量３万から７万のテトラフルオロエチレン
−プロピレン系共重合体（Ｘ）と数平均分子量９万以上
のテトラフルオロエチレン−プロピレン系共重合体（Ｙ
）とを、Ｘ／Ｙ＝５／９５〜４９１５１の重量比割合で
含有するエラストマー組成物の架橋体であることを特徴
とする耐熱性絶縁電線が提供される。(Means for Solving the Problems) In order to achieve the above object, in the present invention, a coating layer made of a fluorine-based elastomer provided on the outer periphery of the conductive wire is a tetrafluoroethylene-based material having a number average molecular weight of 30,000 to 70,000. Propylene copolymer (X) and tetrafluoroethylene-propylene copolymer (Y) with a number average molecular weight of 90,000 or more
) in a weight ratio of X/Y=5/95 to 49151.
本発明において、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て、これらと共重合可能な成分、例
えは、エチレン、ブテン−１、イソブチン、フッ化ビニ
ル、フッ化ビニリデン、ヘキサフルオロプロペン、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
エーテル等を適宜含有させたものも使用できる。In the present invention, the tetrafluoroethylene-propylene copolymer includes, in addition to the main components tetrafluoroethylene and propylene, components copolymerizable with these, such as ethylene, butene-1, isobutyne, and vinyl fluoride. , vinylidene fluoride, hexafluoropropene, chlorotrifluoroethylene, perfluoroalkyl vinyl ether, etc. can also be used.
本発明のテトラフルオロエチレン−プロピレン系共重合
体は、耐熱性や成型性等の面から共重合成分であるテト
ラフルオロエチレン／プロピレンのモル比が９０／１０
〜４５１５５であることが好ましい。また、適宜加えら
れる主成分以外の共重合成分の含有量は３０モル％以下
が好ましい。The tetrafluoroethylene-propylene copolymer of the present invention has a copolymerization component tetrafluoroethylene/propylene molar ratio of 90/10 in terms of heat resistance and moldability.
It is preferable that it is 45155. Further, the content of copolymer components other than the main component, which may be added as appropriate, is preferably 30 mol% or less.
本発明の耐熱性絶縁電線における被覆層として用いられ
るフッ素系エラストマーは、前記のように、分子量が３
万から７万のテトラフルオロエチレン−プロピレン系共
重合体（Ｘ）と９万以上のテトラフルオロエチレン−プ
ロピレン系共重合体（Ｙ）とをＸ／Ｙ＝５／９５〜４９
１５１０重量比割合で含むものである。前記二種の共重
合体の重量比Ｘ／Ｙが５／９５より小さくなると（Ｘが
５重量％より少なくなる）、押出し外観が著しく悪くな
り、絶縁特性、引っ張り特性が著しく低下する。また、
前記二種の共重合体の重量比Ｘ／Ｙが４９１５１より大
きくなると（Ｘが４９重量％より多くなる）、組成物の
粘性が低下し柔らかくなり、押出し直後に偏心、つふれ
が生じる。As mentioned above, the fluorine-based elastomer used as the coating layer in the heat-resistant insulated wire of the present invention has a molecular weight of 3.
Tetrafluoroethylene-propylene copolymer (X) of 70,000 to 70,000 and tetrafluoroethylene-propylene copolymer (Y) of 90,000 or more, X/Y = 5/95 to 49
It contains 1510% by weight. When the weight ratio X/Y of the two types of copolymers is less than 5/95 (X is less than 5% by weight), the extruded appearance becomes extremely poor and the insulation properties and tensile properties are significantly reduced. Also,
When the weight ratio X/Y of the two types of copolymers is greater than 49151 (X is greater than 49% by weight), the viscosity of the composition decreases and becomes soft, causing eccentricity and wrinkling immediately after extrusion.
本発明にかかるエラストマー組成物には上記二種の共重
合体の他に架橋助剤が配合される。これは電子線架橋時
に前記したエラストマー組成物の架橋を円滑に進めるた
めである。架橋助剤としてはトリアリルシアヌレート、
トリアリルイソシアヌレート、トリアクリルホルマール
、トリアリルトリメリテート、ジブロバギルテレフタレ
ート、ジアリルフタレート、トリアリルホスフェート、
テトラアリルテレフタールアミドなどを挙げることがで
き、またその配合量は前記二種の共重合体の合計ｆｆ１
１００重量部に対して２〜１５重量部程度が好ましく、
架橋助剤が２重量部未満の時はエラストマー組成物の架
橋速度が著しく遅くなり、又１５重量部を越えると老化
特性の低下を招き、また導体への押出し被覆時に焼けが
はいることかあるためである。The elastomer composition according to the present invention contains a crosslinking aid in addition to the above two types of copolymers. This is to facilitate crosslinking of the elastomer composition described above during electron beam crosslinking. As a crosslinking aid, triallyl cyanurate,
triallyl isocyanurate, triallyl formal, triallyl trimellitate, dibrobagyl terephthalate, diallyl phthalate, triallyl phosphate,
Tetraallyl terephthalamide, etc. can be mentioned, and the blending amount thereof is the total of the above two types of copolymers ff1
It is preferably about 2 to 15 parts by weight per 100 parts by weight,
If the crosslinking aid is less than 2 parts by weight, the crosslinking rate of the elastomer composition will be extremely slow, and if it exceeds 15 parts by weight, the aging properties will deteriorate and there may be burns during extrusion coating on conductors. It's for a reason.
また必要に応じて酸化チタン、酸化亜鉛、シリコーン、
炭酸アルミニウム、炭酸カルシウム、酸化アルミニウム
などの無機充填剤を添加してもよい。その場合の添加量
は特には限定されるものでないが、前記二種の共重合体
の合計ｆｆ１ｌｏＯ重屯部に対して１２０重量部以下が
よい。あまり多量に添加すると老化特性の低下を招くた
めである。In addition, titanium oxide, zinc oxide, silicone,
Inorganic fillers such as aluminum carbonate, calcium carbonate, and aluminum oxide may also be added. In that case, the amount added is not particularly limited, but is preferably 120 parts by weight or less based on the total weight of the two types of copolymers. This is because adding too much leads to deterioration of aging characteristics.
また、本発明の高耐熱電線はテトラフルオロエチレン−
プロピレン系共重合体からできているため、非常にコー
ルドフローしやすく、電子線未照射時に線材同士が接着
する。また導体と絶縁体の密着が著しく大きくなる。Moreover, the high heat resistant electric wire of the present invention is made of tetrafluoroethylene.
Because it is made from a propylene-based copolymer, it is extremely susceptible to cold flow, and the wires adhere to each other when not irradiated with electron beams. Further, the adhesion between the conductor and the insulator becomes significantly greater.
そこで場合によって、シリコーン樹脂、シリコーンオイ
ル、シリコーンゴムやシリコーン樹脂とポリオレフィン
系樹脂のグラフト共重合体などのシリコーン系配合剤を
を添加してもよい。Therefore, depending on the case, a silicone compounding agent such as silicone resin, silicone oil, silicone rubber, or a graft copolymer of silicone resin and polyolefin resin may be added.
これら配合剤の添加量は特には限定しないが、前記二種
の共重合体の合計量ｉｏｏ重量部に対して１〜２５重量
部重量部上く、添加量が１重量部より小さくなると剥離
性の効果がなくなり、また２５重量部以上になると線材
の抗張力が著しく小さくなる。The amount of these compounding agents added is not particularly limited, but if the amount is 1 to 25 parts by weight based on the total amount of the two types of copolymers (ioo parts by weight), and if the amount added is less than 1 part by weight, the peelability This effect disappears, and when the amount exceeds 25 parts by weight, the tensile strength of the wire rod becomes significantly small.
本発明においては、上記した各成分の所定量を十分混合
して均一なエラストマー組成物を調整する必要がある。In the present invention, it is necessary to sufficiently mix predetermined amounts of each of the above-mentioned components to prepare a uniform elastomer composition.
このような混合はバンバリーミキサ−又はゴム練り用ロ
ールを用いて行うことが好ましく、また１７０℃以上の
温度で１０分以上練ることが好ましい。Such mixing is preferably carried out using a Banbury mixer or a rubber kneading roll, and preferably kneaded at a temperature of 170° C. or higher for 10 minutes or more.
このようにして調整されたエラストマー組成物を押出し
成形機により導体周囲に押出して被覆層を形成する。The elastomer composition thus prepared is extruded around the conductor using an extruder to form a coating layer.
この時押出し機の温度は、エラストマー組成物と成形機
のスクリューとの摩擦によって昇温するので成形機のシ
リンダーの３箇所のヒーターのうち２箇所を２００℃程
度とし、ヘッドは２１０’Ｃ程度としホッパーの下を水
冷すれはよい。At this time, the temperature of the extruder increases due to friction between the elastomer composition and the screw of the molding machine, so two of the three heaters in the cylinder of the molding machine are set to about 200°C, and the head is set to about 210'C. It is good to cool the bottom of the hopper with water.
このようにして導体の周囲に形成された被覆層に電子線
照射をしてそれを架橋せしめ、本発明の電線が得られる
。電子線の照射量は格別限定されるものではないが通常
６〜２０Ｍｒａｄである。The coating layer thus formed around the conductor is irradiated with an electron beam to crosslink it, thereby obtaining the electric wire of the present invention. The amount of electron beam irradiation is not particularly limited, but is usually 6 to 20 Mrad.
（発明の実施例） 以下に、本発明の実施例を示す。(Example of the invention) Examples of the present invention are shown below.
実施例１〜３、比較例１〜４
第１表に示した割合（重１部）で表示の各成分を、バン
バリーミキサ−、ゴム練り用ａ−ルて逐次混合してニジ
ストマー組成物を調整し、この組成物を線径０．５ｍｍ
の裸導線に０．５ｍｍの肉厚で被覆した。そして最後に
この被覆層に１５Ｍｒａｄで電子線を照射した。Examples 1 to 3, Comparative Examples 1 to 4 Each component shown in the proportions shown in Table 1 (1 part by weight) was sequentially mixed in a Banbury mixer and a rubber kneading bowl to prepare a nidistomer composition. Then, this composition was made into a wire with a wire diameter of 0.5 mm.
The bare conductor wire was coated with a thickness of 0.5 mm. Finally, this coating layer was irradiated with an electron beam at 15 Mrad.
得られた各電線につき、その被覆層の引張試験による伸
び率（％）及び抗張力（Ｋ８ｆ／…ｍ２）、および２７
０９Ｃ５日間放置したときの被覆層の引張試験による伸
び率（％）及び抗張力（Ｋｇｆ／ｍｍ２）、及び押出し
外観、押出し直後のつふれを測定した。For each electric wire obtained, the elongation rate (%) and tensile strength (K8f/...m2) of the coating layer by the tensile test, and 27
09C After being left for 5 days, the elongation rate (%) and tensile strength (Kgf/mm2) of the coating layer were measured by a tensile test, as well as the extrusion appearance and sagging immediately after extrusion.
以上の結果を総括して第１表に示した。The above results are summarized in Table 1.
（発明の効果）
以上の説明で明らかなように、本発明の電線はその導体
に形成される被覆層が耐熱性、老化特性、加工性、耐油
性、耐薬品性に優れたエラストマー組成物からなるため
、老化特性、耐熱性、耐油性、加工性に優れており、そ
の工業的価値は大きい。(Effects of the Invention) As is clear from the above explanation, in the electric wire of the present invention, the coating layer formed on the conductor is made of an elastomer composition that has excellent heat resistance, aging characteristics, processability, oil resistance, and chemical resistance. Therefore, it has excellent aging characteristics, heat resistance, oil resistance, and processability, and its industrial value is great.
Claims (1)
けてなる耐熱性絶縁電線において、該被覆層が数平均分
子量３万から７万のテトラフルオロエチレン−プロピレ
ン系共重合体（Ｘ）と数平均分子量９万以上のテトラフ
ルオロエチレン−プロピレン系共重合体（Ｙ）とを、Ｘ
／Ｙ＝５／９５〜４９／５１の重量比割合で含有するエ
ラストマー組成物の架橋体であることを特徴とする耐熱
性絶縁電線。In a heat-resistant insulated wire comprising a coating layer made of a fluorine-based elastomer provided on the outer periphery of a conductive wire, the coating layer is made of a tetrafluoroethylene-propylene copolymer (X) having a number average molecular weight of 30,000 to 70,000. A tetrafluoroethylene-propylene copolymer (Y) with a molecular weight of 90,000 or more,
A heat-resistant insulated wire, characterized in that it is a crosslinked product of an elastomer composition containing /Y in a weight ratio of 5/95 to 49/51.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27007489A JPH03133007A (en) | 1989-10-17 | 1989-10-17 | Heat-resistant insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27007489A JPH03133007A (en) | 1989-10-17 | 1989-10-17 | Heat-resistant insulated wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03133007A true JPH03133007A (en) | 1991-06-06 |
Family
ID=17481163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27007489A Pending JPH03133007A (en) | 1989-10-17 | 1989-10-17 | Heat-resistant insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03133007A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63284710A (en) * | 1987-05-14 | 1988-11-22 | Hitachi Cable Ltd | Fluorine-containing elastomer-covered cabtire cable |
-
1989
- 1989-10-17 JP JP27007489A patent/JPH03133007A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63284710A (en) * | 1987-05-14 | 1988-11-22 | Hitachi Cable Ltd | Fluorine-containing elastomer-covered cabtire cable |
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