STABILIZED CROSS-LINKED POLYOLEFIN COMPOSITIONS

摘要

A composition is disclosed that includes at least one polyolefin, at least one organic peroxide, and an antioxidant mixture of a composition of at least one polyolefin, at least one organic peroxide, and an antioxidant mixture. The antioxidant mixture has at least one fast radical scavenger selected from the group consisting of low hindered phenols, low hindered thiophenols, low hindered thiobisphenols, aliphatic amines, aromatic amines, NOR HALS, hydroxylamines, and mixtures thereof, and at least one long term stabilizer selected from the group consisting of low hindered phenols, highly hindered phenols, thiosynergists, aliphatic amines, aromatic amines, HALS, hydroxylamines, and mixtures thereof. The preferred polyolefin is a homopolymer of ethylene or a copolymer of ethylene and the compositions are useful in insulating media for medium and high voltage wire and cable applications.