Claims
- 1. A fluorine-containing elastomer insulated conductor comprising:
- (1) a conductor composed of a plurality of wires, (2) a layer of a vulcanized insulation coating surrounding said conductor, said layer of a vulcanized insulating coating comprising 100 parts by weight of a fluorine-containing elastomeric copolymer having a number average molecular weight of from 20,000 to 60,000, containing as major components a unit based on tetrafluoroethylene and a unit based on an .alpha.-olefin having 2 to 4 carbon atoms and exhibiting rubber elasticity at room temperature, 0.1 to 5 parts by weight of an organic peroxide, 0.1 to 20 parts by weight of a polyallyl compound, 0.1 to 15 parts by weight of a metal oxide and 1 to 100 parts by weight of a silicic compound, and (3) an intermediate layer formed between the stranded conductor and the insulation coating which prevents the insulation coating from sinking in spaces between said wires.
- 2. An insulated electric wire of claim 1, wherein the metal oxide is selected from the group consisting of magnesium oxide, calcium oxide and lead oxide.
- 3. An insulated electric wire of claim 1, wherein the fluorine-containing elastomeric copolymer has a number average molecular weight of from 30,000 to 50,000.
- 4. An insulated electric wire of claim 1, wherein the fluorine-containing elastomeric copolymer is a tetrafluoroethylene-propylene copolymer.
- 5. An insulated electric wire of claim 4, wherein the molar ratio of tetrafluoroethylene to propylene is from 95:5 to 30:70.
- 6. An insulated electric wire of claim 1, wherein the amount of the organic peroxide is from 0.5 to 3 parts by weight.
- 7. An insulated electric wire of claim 1, wherein the amount of the polyallyl compound is from 0.2 to 10 parts by weight.
- 8. An insulated electric wire according to claim 1, wherein said layer of a vulcanized insulation coating has a Mooney viscosity ML.sub.1+4 (100.degree. C.) of from 20 to 150.
- 9. An insulated electric wire of claim 1, wherein the intermediate layer does not break and remains solid when the electric wire is subjected to a winding test at 150.degree. C. or higher.
- 10. An insulated electric wire of claim 1, wherein the surface of the intermediate layer contacting the insulation coating is non-sticky.
- 11. An insulated electric wire of claim 10, wherein the surface of the intermediate layer contacting the insulation coating is easily disintegrable.
- 12. An insulated electric wire of claim 1, wherein said .alpha.-olefin having 2 to 4 carbon atoms is propylene.
Priority Claims (5)
Number |
Date |
Country |
Kind |
56-100052 |
Jun 1981 |
JPX |
|
56-100053 |
Jun 1981 |
JPX |
|
56-101953 |
Jun 1981 |
JPX |
|
56-101709 |
Jun 1981 |
JPX |
|
56-155775 |
Sep 1981 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 776,295, filed Sept. 16, 1985, and now abandoned, which is a continuation of application Ser. No. 392,910, filed June 28, 1982, and now abandoned.
US Referenced Citations (8)
Continuations (2)
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Number |
Date |
Country |
Parent |
776295 |
Sep 1985 |
|
Parent |
392910 |
Jun 1982 |
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