Primary mixture of crosslinking initiator and accelerator

摘要

A primary mixture for cross-linking of polyethylene, comprising at least one free radical initiator selected from organic peroxides, azo compounds or mixtures thereof, and 1-3 of the above free radical initiators Cycloalkanes having 5 to 7 carbon atoms substituted with vinyl, allyl or isopropenyl groups, aromatic compounds substituted with 1 to 3 vinyl, allyl or isopropenyl groups, polysubstituted methacrylates, acrylates Characterized in that it comprises at least one crosslinking accelerator selected from maleimide-based monomers, wherein the weight ratio of free radical initiator to crosslinking accelerator is not less than 1, preferably between 1.5 and 4. Primary mixture. The invention further relates to a process for the production of crosslinked polyethylene and the use of said primary mixture.