Spliced high voltage cable

• US 4,354,053 A
• Filed: 03/10/1980
• Issued: 10/12/1982
• Est. Priority Date: 02/01/1978
• Status: Expired due to Term

• Current Assignee: Marvin H. Gold
• Original Assignee: Marvin H. Gold
• Inventors: Gold, Marvin H.
• Primary Examiner(s): Kucia, Richard R.
• Application Number:
  US06/128,970
• Time in Patent Office: 946 Days
• Field of Search: 174/84 R, 174/76, 174/77 R, 156/48, 156/49, 156/215
• US Class Current: 174/84.00R
• CPC Class Codes: H02G 15/003 Filling materials, e.g. solid or fluid insulation

Abstract

A method and composition for effecting splices of high voltage cable sections for use with a mold placed around the cable sections. The composition comprises a liquid polyolefin, a finely divided solid polyolefin and a chain extension agent capable of reacting to form addition polymer linkages with the liquid polyolefin.

Claims

1. Spliced high voltage cable prepared from a splicing of two insulation and conductor portions, said spliced cable comprising:

electrically and mechanically joined conductor portions, and,

a monolithic cured polymeric insulation splice prepared by the reaction of a castable mixture comprising a liquid polyolefin having addition polymer reactable sites, a chain extension agent reactive with said polyolefin'"'"'s reactive sites, and a particulated solid saturated polyolefin with the two insulation portions.

2. The cable splice of claim 1 wherein the castable mixture contains an organic diluent.

3. The cable splice of claim 1 wherein the castable mixture contains a catalyst.

4. The cable splice of claim 1 wherein the liquid polyolefin is selected from the group consisting of polybutadiene, butadiene-styrene, butadiene-acrylonitrile, isoprene, and cyclohexadiene.

5. The cable splice of claim 1 wherein the insulation portions are selected from the group consisting of crosslinked polyethylene, and crosslinked polyethylene-propylene.

6. The cable splice of claim 1 wherein the particulated solid polyolefin is selected from the group consisting of saturated polyethylene, polypropylene, and polystyrene.

7. Spliced cable as in claim 1 wherein the insulation is selected from the group consisting of crosslinked polyethylene, polyethylenepropylene, and the reaction with the castable mixture is carried out as a two step two temperature reaction.

8. Spliced high voltage cable as in claim 1 wherein the reaction of the castable mixture with the insulation is carried out as a two step two temperature reaction.

9. Spliced cable as in claim 7 wherein the castable mixture further includes an organic diluent and a catalyst.

10. Spliced high voltage cable prepared as in claim 3 wherein the liquid polyolefin is a compound of the formula:

##STR3## wherein Vi is a vinyl side chain;

B is the backbone of the polymer and contains at least one unsaturated double bond;

G represents non-reactive side group substituents selected from the group consisting of cycolalkyl, alkyl, aryl, aralkyl, iodo, bromo, chloro, cyano, carbalkoxy, and alkoxy;

Fa is a functional chain-extendable moiety selected from the group consisting of;

--OH, --COOH, --NH₂, --SH, --C═

CH--, --NCO, and ##STR4## each of which may be the same or different;

wherein m is a number of at least 2.1, x is a number from 0 to about 5; and

q designates a molecular weight range of 300 to 10,000.

11. Spliced high voltage cable prepared from a splicing of two insulation and conductor portions said cable splice comprising:

electrically and mechanically joined conductor portions, and

a monolithic cured polymeric insulation splice prepared by the reaction of a castable mixture comprising a liquid polyolefin having addition polymer reactable sites, a chainthe liquid polyolefin has condensable pendent groups thereon.