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US 12,112,864 B2Granted
Electrical insulation composition and power cable
AssigneeSumitomo Electric Industries, Ltd.
InventorsSatoshi Yamasaki, Takanori Yamazaki
Life of this patent
Estimating the term…
Abstract
An electrical insulation composition includes a base resin containing 65 parts by mass or more and 98 parts by mass or less of a polyethylene and 2 parts by mass or more and 35 parts by mass or less of a styrene-containing resin, the polyethylene and the styrene-containing resin totaling 100 parts by mass, and 0.05 parts by mass or more and 1.0 parts by mass or less of a fatty acid amide.
Claims22
An electrical insulation composition included in an insulation layer of a power cable, the electrical insulation composition comprising:
- a base resin containing 65 parts by mass or more and 98 parts by mass or less of a polyethylene and 2 parts by mass or more and 35 parts by mass or less of styrene-based thermoplastic elastomer, the polyethylene and the styrene-based thermoplastic elastomer totaling 100 parts by mass;
- and
- 0.05 parts by mass or more and 1.0 parts by mass or less of a fatty acid amide,
- wherein
- no constitutional unit containing an oxygen atom is bonded to the polyethylene,
- a density of the polyethylene is 0.91 g/cm3 or more and 0.945 g/cm3 or less,
- the base resin is crosslinked with an organic peroxide, and
- a gel fraction of the electrical insulation composition is more than 68%.
5 more elements
A power cable comprising:
- a conductor;
- and
- an insulation layer provided to cover an outer periphery of the conductor, the insulation layer including an electrical insulation composition comprising:
- a base resin containing 65 parts by mass or more and 98 parts by mass or less of a polyethylene and 2 parts by mass or more and 35 parts by mass or less of a styrene-based thermoplastic elastomer, the polyethylene and the styrene-based thermoplastic elastomer totaling 100 parts by mass, and
- 0.05 parts by mass or more and 1.0 parts by mass or less of a fatty acid amide,
- wherein
- no constitutional unit containing an oxygen atom is bonded to the polyethylene,
- a density of the polyethylene is 0.91 g/cm3 or more and 0.945 g/cm3 or less,
- the base resin is crosslinked with an organic peroxide, and
- a gel fraction of the electrical insulation composition is more than 68%.
7 more elements
Dependencies are inferred from the claim text.