HIGH VOLTAGE INSULATED ELECTRIC CABLE HAVING OUTER SEMICONDUCTIVE LAYER
First Claim
2. An insulated cable as claimed in claim 1 characterized by the use of Di- Alpha -cumyl peroxide as a cross-linking agent of the semiconductive layer.
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Accused Products
Abstract
This invention relates to an insulated cable having an outer semiconductive layer, and more particularly relates to the structure of an insulated cable chiefly consisting of a crosslinked polyethylene or a crosslinked polyethylene copolymer, having an outer semiconductive layer. The composition is a mixture of 10 - 90 percent by weight of ethylene-vinyl acetate copolymer having 15 - 55 percent by weight of vinyl acetate content with 90 - 10 percent by weight of ethylene-vinyl acetatevinyl chloride terpolymer, said mixture being used as a base, said base being mixed with a cross-linking agent and a conductivity imparting agent such as carbon black.
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Citations
7 Claims
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2. An insulated cable as claimed in claim 1 characterized by the use of Di- Alpha -cumyl peroxide as a cross-linking agent of the semiconductive layer.
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3. An insulated cable as claimed in claim 1 characterized by the use of 2.5-dimethyl-2'"'"''"'"'.5'"'"''"'"'-di-(tertiary butyl peroxy)-hexine-3 as a cross-linking agent of the semiconductive layer.
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4. An insulated cable as claimed in claim 1 wherein the insulation layer is made of crosslinked polyethylene.
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5. An insulated cable as claimed in claim 1 wherein the insulation layer is made of crosslinked polyolefine consisting of ethylene-vinyl acetate copolymer.
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6. An insulated cable as claimed in claim 1 wherein an inorganic filler is added to the composition of said insulation layer.
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7. The insulated electric cable of claim 1 wherein antioxidant and processing aids are included in the composition of said outer semiconductive layer as required.
Specification